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    <completedYear/>
    <publishedYear>2013</publishedYear>
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    <language>eng</language>
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    <title language="eng">Rotor for an Electric Machine Having Magnets Secured by a Thermoplastic Material and Corresponding Manufacturing Method (Patent)</title>
    <abstract language="deu">Es wird ein Rotor für eine Elektromaschine sowie ein Verfahren zum Herstellen eines solchen Rotors beschrieben. Der Rotor (15) weist einen Rotorkörper (9) mit einer Mehrzahl von Ausnehmungen (5) und einer Mehrzahl von Magneten (7), die in die Ausnehmungen (5) des Rotorkörpers (9) aufgenommen sind, auf. Die Magneten (7) sind wenigstens teilweise von einem thermoplastischen Material umgeben und durch dieses in den Ausnehmungen (5) fixiert. Im Vergleich zu herkömmlichen duroplastischen Klebstoffen ermöglichen thermoplastische Materialien ein einfacheres, formschlüssiges Fixieren der Magneten (7) in dem Rotorkörper (9). In das thermoplastische Material (13) können magnetische oder magnetisierbare Partikel eingelagert sein, so dass ein mit dem thermoplastischen Material (13) aufgefüllter Spalt (11) zwischen den Magneten (7) und den Wandungen der Ausnehmungen (5) zum gesamten, von dem Rotor erzeugten Magnetfeld beitragen kann.</abstract>
    <abstract language="eng">The invention relates to a rotor for an electric machine and to a method for manufacturing such a rotor. The rotor (15) comprises a rotor body (9) having a plurality of holes (5) and a plurality of magnets (7) that are accommodated in the holes (5) of the rotor body (9). The magnets (7) are enclosed at least partially by a thermoplastic material and secured by the latter in the holes (5). In comparison to conventional duroplastic adhesives, the thermoplastic materials enable a simpler positive locking securing of the magnets (7) in the rotor body (9). Magnetic or magnetizable particles can be embedded in the thermoplastic material (13), such that a gap (11) between the magnets (7) and the walls of the holes (5), which gap is filled with the thermoplastic material (13), can contribute to the total magnetic field generated by the rotor.</abstract>
    <abstract language="fra">L'invention concerne un rotor pour un moteur électrique ainsi qu'un procédé pour la fabrication d'un tel rotor. Le rotor (15) présente un corps (9) de rotor pourvu d'une pluralité d'évidements (5) et d'une pluralité d'aimants (7) qui sont logés dans les évidements (5) du corps (9) du rotor. Les aimants (7) sont entourés au moins partiellement par un matériau thermoplastique et fixés par celui-ci dans les évidements (5). Par rapport aux adhésifs thermodurcissables usuels, les matériaux thermoplastiques permettent une fixation plus simple, par complémentarité de forme des aimants (7) dans le corps du rotor (9). Des particules magnétiques ou magnétisables peuvent être incorporées dans le matériau thermoplastique (13) de telle sorte qu'une fente (11) entre les aimants (7) et les parois des évidements (5), remplie du matériau thermoplastique (13), puisse contribuer au champ magnétique global, généré par le rotor.</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2013091943&amp;_cid=P20-KU3284-23802-1</identifier>
    <enrichment key="opus.import.data">@patentploeger_rotor_2013, title = Rotor for an Electric Machine Having Magnets Secured by a Thermoplastic Material and Corresponding Manufacturing Method, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2013091943&amp;_cid=P20-KU3284-23802-1, holder = ROBERT BOSCH GMBH, abstract = The invention relates to a rotor for an electric machine and to a method for manufacturing such a rotor. The rotor (15) comprises a rotor body (9) having a plurality of holes (5) and a plurality of magnets (7) that are accommodated in the holes (5) of the rotor body (9). The magnets (7) are enclosed at least partially by a thermoplastic material and secured by the latter in the holes (5). In comparison to conventional duroplastic adhesives, the thermoplastic materials enable a simpler positive locking securing of the magnets (7) in the rotor body (9). Magnetic or magnetizable particles can be embedded in the thermoplastic material (13), such that a gap (11) between the magnets (7) and the walls of the holes (5), which gap is filled with the thermoplastic material (13), can contribute to the total magnetic field generated by the rotor., type = patent, author = Ploeger, Armin and Brenner, Frank and Miehle, Tilman and Horn, Johannes and Herranz Gracia, Mercedes, urldate = 2021-09-27, date = 2013-06-27, langid = english, note = WO2013091943, keywords = Rotor for an Electric Machine Having Magnets Secured by a Thermoplastic Material and Corresponding Manufacturing Method, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/FSUQCK89/detail.html:text/html,</enrichment>
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    <author>Armin Ploeger</author>
    <author>Frank Brenner</author>
    <author>Tilman Miehle</author>
    <author>Johannes Horn</author>
    <author>Mercedes Herranz Gracia</author>
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      <language>eng</language>
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      <value>Rotor for an Electric Machine Having Magnets Secured by a Thermoplastic Material and Corresponding Manufacturing Method</value>
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  <doc>
    <id>4158</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
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    <title language="eng">Method and Device for Operating an Externally Excited Electric Machine (Patent)</title>
    <abstract language="deu">Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Betrieb einer fremderregten elektrischen Maschine (1), insbesondere Synchronmaschine. Dabei werden mit Hilfe einer Sensorik eine, eine Rotortemperatur (Temp_Rotor) und/oder eine Statortemperatur charakterisierende Größe bestimmt und ein Erregerstrom (l_E) und Statorströme (l_U, l_V, l_W) für die elektrische Maschine (1) durch eine Steuereinheit (3) zumindest in vorgebbaren Betriebsbereichen in Abhängigkeit von der die Rotortemperatur (Temp_Rotor) und/oder die Statortemperatur charakterisierenden Größe festgelegt.</abstract>
    <abstract language="eng">The invention relates to a method and a device for operating an externally excited electric machine (1), in particular synchronous machine. In this context, a variable which characterizes a rotor temeperature (Temp_Rotor) and/or a stator temperature is determined using a sensor system, and an exciter current (l_E) and stator currents (l_U, l_V, l_W) for the electric machine (1) are defined by a control unit (3) at least in predefinable operating ranges as a function of the variable which characterizes the rotor temperature (Temp_Rotor) and/or the stator temperature.</abstract>
    <abstract language="fra">L'invention concerne un procédé et un dispositif pour faire fonctionner une machine électrique (1) à excitation séparée, notamment une machine synchrone. Une grandeur caractérisant une température de rotor (temp_rotor) et/ou une température de stator sont déterminées à l'aide d'un capteur; et un courant d'excitation (l_E) et des courants statoriques ((l_U, l_V, l_W) de la machine électrique (1) sont fixés au moins dans des plages de fonctionnement pouvant être prédéfinies, en fonction de la grandeur caractérisant la température de rotor (temp_rotor) et/ou la température de stator par l'intermédiaire d'une unité de commande (3).</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2012072314&amp;_cid=P20-KU3284-23802-1</identifier>
    <enrichment key="opus.import.data">@patentkolmorgen_method_2012, title = Method and Device for Operating an Externally Excited Electric Machine, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2012072314&amp;_cid=P20-KU3284-23802-1, holder = ROBERT BOSCH GMBH, abstract = The invention relates to a method and a device for operating an externally excited electric machine (1), in particular synchronous machine. In this context, a variable which characterizes a rotor temeperature (Temp_Rotor) and/or a stator temperature is determined using a sensor system, and an exciter current (l_E) and stator currents (l_U, l_V, l_W) for the electric machine (1) are defined by a control unit (3) at least in predefinable operating ranges as a function of the variable which characterizes the rotor temperature (Temp_Rotor) and/or the stator temperature., type = patent, author = Kolmorgen, Stefan and Mikulec, Dragan and Goetting, Gunther and Spannhake, Stefan and Raichle, Daniel and Scheidle, Alexander and Challand, Yves and Beyer, Mario and Herranz Gracia, Mercedes, urldate = 2021-09-27, date = 2012-06-07, langid = english, note = WO2012072314, keywords = Method and Device for Operating an Externally Excited Electric Machine, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/6JYIU5DN/detail.html:text/html,</enrichment>
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    <author>Stefan Kolmorgen</author>
    <author>Dragan Mikulec</author>
    <author>Gunther Goetting</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Stefan Spannhake</author>
    <author>Daniel Raichle</author>
    <author>Alexander Scheidle</author>
    <author>Yves Challand</author>
    <author>Mario Beyer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Method and Device for Operating an Externally Excited Electric Machine</value>
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  </doc>
  <doc>
    <id>4159</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
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    <title language="eng">Helical Winding with Increased Field Use (Patent)</title>
    <abstract language="deu">Es wird ein Stator (3) für eine elektrische Wechselstrom-Maschine (1) mit einer magnetischen Polzahl p angegeben, - wobei der Stator (3) eine zentrale Achse A aufweist, - wobei der Stator (3) eine Statorwicklung (4) mit einer Mehrzahl von Leiterwindungen (13j) aufweist, welche jeweils zumindest in einem Teilabschnitt (l) bezüglich der zentralen Achse (A) helixartig verlaufen, - wobei die einzelnen Leiterwindungen (13j) zu insgesamt n elektrischen Strängen (u1, u2 bis w3, w4) gruppiert sind, dadurch gekennzeichnet, dass die Anzahl n der Stränge größer als drei ist, insbesondere ein ganzzahliges Vielfaches von drei. Weiterhin wird eine elektrische Maschine (1) mit einem derartigen Stator (3) angegeben.</abstract>
    <abstract language="eng">The invention relates to a stator (3) for an electric alternating-current machine (1) with a number of magnetic poles p, wherein the stator (3) comprises a central axis A, said stator (3) comprises a stator winding (4) with a plurality of conductor windings (13j), a portion (l) of each winding running helically in relation to the central axis (A), and wherein the individual conductor windings (13j) are grouped together to collectively form n phase windings (u1, u2 to w3, w4), characterised in that the number n of the phase windings is higher than three, particularly an integral multiple of three. The invention further relates to an electric machine (1) comprising such a stator (3).</abstract>
    <abstract language="fra">L'invention concerne un stator (3) pour une machine électrique à courant alternatif (1) ayant un nombre p de pôles magnétiques. Le stator (3) comprend : - un axe central A ; - un enroulement de stator (4) ayant une pluralité d’enroulements de fils (13j) qui présentent dans au moins une sous-partie (l) une forme hélicoïdale par rapport à l’axe central (A), - les enroulements de fils individuels (13j) étant regroupés en un total de n faisceaux (u1, u2 à w3, w4). Le stator est caractérisé en ce que le nombre n des faisceaux est supérieur à trois, en particulier est un multiple entier de trois. La présente invention concerne en outre une machine électrique (1) équipée d’un stator (3) de ce genre.</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018069517&amp;_cid=P20-KU3284-23802-1</identifier>
    <enrichment key="opus.import.data">@patentfrank_helical_2018, title = Helical Winding with Increased Field Use, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018069517&amp;_cid=P20-KU3284-23802-1, holder = SIEMENS AKTIENGESELLSCHAFT, abstract = The invention relates to a stator (3) for an electric alternating-current machine (1) with a number of magnetic poles p, wherein the stator (3) comprises a central axis A, said stator (3) comprises a stator winding (4) with a plurality of conductor windings (13j), a portion (l) of each winding running helically in relation to the central axis (A), and wherein the individual conductor windings (13j) are grouped together to collectively form n phase windings (u1, u2 to w3, w4), characterised in that the number n of the phase windings is higher than three, particularly an integral multiple of three. The invention further relates to an electric machine (1) comprising such a stator (3)., type = patent, author = Frank, Michael and Grundmann, Jörn and Herranz Gracia, Mercedes and Nick, Wolfgang, urldate = 2021-09-27, date = 2018-04-19, langid = english, note = WO2018069517, keywords = Helical Winding with Increased Field Use, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/2PJTMMKU/detail.html:text/html,</enrichment>
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    <author>Michael Frank</author>
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    <subject>
      <language>eng</language>
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      <value>Helical Winding with Increased Field Use</value>
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  </doc>
  <doc>
    <id>4160</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
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    <title language="eng">Electrical Coil Arrangement Comprising Litz Wire Conductor Segments (Patent)</title>
    <abstract language="deu">Es wird eine elektrische Spulenanordnung (21) umfassend wenigstens eine Leiterwindung (wi; wl, w2) mit zwei Leiterzweigen (23a, 23b) beschrieben, von denen der erste Leiterzweig (23a) bezüglich der vorgegebenen Stromflussrichtung als Hinleiter und der zweite Leiterzweig (23b) bezüglich dieser Stromflussrichtung als Rückleiter ausgebildet ist. Dabei sind die einzelnen Leiterzweige (23a, 23b) als verpresste und mit einem gehärteten Füllmittel (40) in eine stabile Form gebrachte Litzenleiter mit einer Vielzahl von elektrisch leitfähigen Einzeldrähten (38) ausgebildet, wobei jeder einzelne Leiterzweig (23a, 23b) als separates, vorgefertigtes Leitersegment (27) gebildet ist, welches nachträglich in wenigstens einem Endbereich (17) elektrisch leitend mit einem anderen, zugeordneten Leiterzweig (23b, 23a) verbunden ist. Weiterhin werden eine elektrische Maschine (1) mit einer derartigen Spulenanordnung (21) und ein Verfahren zur Herstellung einer solchen Spulenanordnung (21) beschrieben.</abstract>
    <abstract language="eng">The invention describes an electrical coil arrangement (21) comprising at least one conductor turn (wi; wl, w2) with two conductor branches (23a, 23b), the first conductor branch (23a) of which is designed as a forward conductor with respect to the prespecified current flow direction and the second conductor branch (23b) of which is designed as a return conductor with respect to this current flow direction. In this case, the individual conductor branches (23a, 23b) are in the form of pressed litz wire conductors which are made stable by a cured filling material (40) and have a large number of electrically conductive individual wires (38), wherein each individual conductor branch (23a, 23b) is formed as a separate, prefabricated conductor segment (27) which is subsequently electrically conductively connected to one another, associated conductor branch (23b, 23a) in at least one end region (17). The invention further describes an electrical machine (1) comprising a coil arrangement (21) of this kind, and a method for producing a coil arrangement (21) of this kind.</abstract>
    <abstract language="fra">L’invention concerne un ensemble de bobine électrique (21) comprenant au moins un enroulement de conducteur (wi ; wl, w2) comportant deux branches de conducteur (23a, 23b) dont la première branche de conducteur (23a) est conçue comme conducteur aller par rapport au sens de circulation de courant prédéterminé et la seconde branche de conducteur (23b) est conçue comme conducteur de retour par rapport à ce sens de circulation de courant. Selon l’invention, les branches de conducteur individuelles (23a, 23b) sont conçues comme des conducteurs multibrins pressés qui sont amenés sous une forme stable avec une matière de remplissage durcie (40) et qui comportent une pluralité de fils individuels (38) électriquement conducteurs. Chaque branche de conducteur individuelle (23a, 23b) est formée comme un segment de conducteur préfabriqué séparé (27) qui est ensuite relié électriquement, dans au moins une zone d’extrémité (17), à une autre branche de conducteur (23b, 23a) associée. En outre, l’invention concerne une machine électrique (1) pourvue d’un tel ensemble de bobine (21) et un procédé de fabrication d’un tel ensemble de bobine (21).</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018086983&amp;_cid=P20-KU3284-23802-1</identifier>
    <enrichment key="opus.import.data">@patentfilipenko_electrical_2018, title = Electrical Coil Arrangement Comprising Litz Wire Conductor Segments, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018086983&amp;_cid=P20-KU3284-23802-1, holder = SIEMENS AKTIENGESELLSCHAFT, abstract = The invention describes an electrical coil arrangement (21) comprising at least one conductor turn (wi; wl, w2) with two conductor branches (23a, 23b), the first conductor branch (23a) of which is designed as a forward conductor with respect to the prespecified current flow direction and the second conductor branch (23b) of which is designed as a return conductor with respect to this current flow direction. In this case, the individual conductor branches (23a, 23b) are in the form of pressed litz wire conductors which are made stable by a cured filling material (40) and have a large number of electrically conductive individual wires (38), wherein each individual conductor branch (23a, 23b) is formed as a separate, prefabricated conductor segment (27) which is subsequently electrically conductively connected to one another, associated conductor branch (23b, 23a) in at least one end region (17). The invention further describes an electrical machine (1) comprising a coil arrangement (21) of this kind, and a method for producing a coil arrangement (21) of this kind., type = patent, author = Filipenko, Mykhaylo and Frank, Michael and Gleixner, Thomas and Grundmann, Jörn and Herranz Gracia, Mercedes, urldate = 2021-09-27, date = 2018-05-17, langid = english, note = WO2018086983, keywords = Electrical Coil Arrangement Comprising Litz Wire Conductor Segments, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/QTXYU6TW/detail.html:text/html,</enrichment>
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    <author>Mykhaylo Filipenko</author>
    <author>Michael Frank</author>
    <author>Thomas Gleixner</author>
    <author>Jörn Grundmann</author>
    <author>Mercedes Herranz Gracia</author>
    <subject>
      <language>eng</language>
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      <value>Electrical Coil Arrangement Comprising Litz Wire Conductor Segments</value>
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  </doc>
  <doc>
    <id>4161</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
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    <title language="eng">Asynchronous Machine with Optimized Distribution of Electrical Losses Between Stator and Rotor (Patent)</title>
    <abstract language="deu">Es wird eine Asynchronmaschine (1) vorgeschlagen, wie sie insbesondere in Elektrofahrzeugen oder Hybridfahrzeugen eingesetzt werden kann. Die Asynchronmaschine (1) weist einen Rotor (5) und einen Stator (3) auf. Die Asynchronmaschine ist derart aufgebaut und angesteuert, dass sie eine Polpaarzahl p von p=3 aufweist. Aufgrund der hierdurch erreichbaren verringerten Jochsättigung kann das Statorjoch (9) mit einer geringeren Höhe hy1 ausgebildet werden, so dass ein Verhältnis von Rotoraußendurchmesser D2a zu Statoraußendurchmesser D1a Werte zwischen 0,7 und 0,8 annehmen kann. Hierdurch lassen sich im Rotor (5) vergrößerte Rotorzähne (19) und entsprechend vergrößerte Rotornuten (21) ausbilden, so dass elektrische Verluste in dem als Rotorspulenelement (23) dienenden Material in den Rotornuten (21) im Vergleich zu herkömmlichen Asynchronmaschinen geringer sind. Die als Ausgleich in dem Stator (3) verstärkt auftretenden elektrischen Verluste führen zu einer geringeren Erwärmung des Stators (3) als dies beim Rotor (5) der Fall wäre, da sich der Stator (3) mit einfachen Mitteln kühlen lässt. Insgesamt kann somit mit der vorgeschlagenen Asynchronmaschine (1) ein höheres Dauerdrehmoment erreicht werden.</abstract>
    <abstract language="eng">The invention relates to an asynchronous machine (1) as can be used particularly in electric vehicles or hybrid vehicles. The asynchronous machine (1) has a rotor (5) and a stator (3). The asynchronous machine is designed and controlled in such a manner that it has a pole pair number p of p=3. Because of the reduced yoke saturation that can consequently be achieved, the stator yoke (9) can be designed with a lesser height hy1, such that a ratio of the outer rotor diameter D2a to the outer stator diameter D1a can assume values between 0.7 and 0.8. As a result, enlarged rotor teeth (19) and correspondingly enlarged rotor grooves (21) can be formed in the rotor (5), such that electrical losses in the material in the rotor grooves (21) acting as the rotor coil element (23) are smaller in comparison to conventional asynchronous machines. The electrical losses occurring to a greater extent in the stator (3) compensating for this lead to a lesser warming of the stator (3) than would be the case with the rotor (5) as the stator (3) can be cooled by simple means. Overall, a higher continuous torque can thus be achieved with the asynchronous machine (1) according to the invention.</abstract>
    <abstract language="fra">L'invention concerne une machine asynchrone (1), pouvant être utilisée en particulier dans des véhicules électriques ou hybrides. Cette machine asynchrone (1) présente un rotor (5) et un stator (3). La machine asynchrone est conçue et commandée de sorte qu'elle présente un nombre de paires polaires p tel que p=3. La saturation de la culasse peut ainsi être réduite, ce qui permet de concevoir une culasse de stator (9) présentant une hauteur réduite hy1, de sorte que le rapport entre le diamètre extérieur de rotor D2a et le diamètre extérieur de stator D1a peut être compris entre 0,7 et 0,8. Le rotor (5) peut ainsi être pourvu de dents de rotor (19) plus grandes et donc d'encoches de rotor (21) plus grandes, ce qui permet de réduire les pertes électriques dans le matériau servant d'élément de bobine rotorique (23) dans les encoches de rotor (21) par comparaison avec les machines asynchrones classiques. Les pertes électriques accrues survenant en compensation dans le stator (3) entraînent un échauffement réduit du stator (3) comparativement à ce qui se produirait dans le rotor (5), du fait que le stator (3) peut être refroidi avec des moyens simples. La machine asynchrone (1) selon l'invention permet globalement d'obtenir un couple de rotation continu plus élevé.</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014090440&amp;_cid=P20-LLZ0Y3-28898-1</identifier>
    <enrichment key="opus.import.data">@patentruiz_de_larramendi_asynchronous_2014, title = Asynchronous Machine with Optimized Distribution of Electrical Losses Between Stator and Rotor, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014090440&amp;_cid=P20-KU334I-31849-2, holder = ROBERT BOSCH GMBH, abstract = The invention relates to an asynchronous machine (1) as can be used particularly in electric vehicles or hybrid vehicles. The asynchronous machine (1) has a rotor (5) and a stator (3). The asynchronous machine is designed and controlled in such a manner that it has a pole pair number p of p=3. Because of the reduced yoke saturation that can consequently be achieved, the stator yoke (9) can be designed with a lesser height hy1, such that a ratio of the outer rotor diameter D2a to the outer stator diameter D1a can assume values between 0.7 and 0.8. As a result, enlarged rotor teeth (19) and correspondingly enlarged rotor grooves (21) can be formed in the rotor (5), such that electrical losses in the material in the rotor grooves (21) acting as the rotor coil element (23) are smaller in comparison to conventional asynchronous machines. The electrical losses occurring to a greater extent in the stator (3) compensating for this lead to a lesser warming of the stator (3) than would be the case with the rotor (5) as the stator (3) can be cooled by simple means. Overall, a higher continuous torque can thus be achieved with the asynchronous machine (1) according to the invention., type = patent, author = Ruiz De Larramendi, Miguel and Heuser, Patrick and Herranz Gracia, Mercedes, urldate = 2021-09-27, date = 2014-06-19, langid = english, note = WO2014090440, keywords = Asynchronous Machine with Optimized Distribution of Electrical Losses Between Stator and Rotor, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/RIVQXW9A/detail.html:text/html,</enrichment>
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    <author>Miguel Ruiz De Larramendi</author>
    <author>Patrick Heuser</author>
    <author>Mercedes Herranz Gracia</author>
  </doc>
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    <id>4162</id>
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    <publishedYear>2018</publishedYear>
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    <title language="eng">Helical Winding with More Homogeneous Field Utilisation (Patent)</title>
    <abstract language="deu">Helixartige Wicklung mit homogenerer Feldausnutzung Es wird ein Stator (3) für eine elektrische Wechselstrom- Maschine (1) mit einer magnetischen Polzahl p angegeben, - wobei der Stator (3) eine zentrale Achse A aufweist, - wobei der Stator (3) eine Statorwicklung (4) mit einer Mehrzahl von Leiterwindungen (13j) aufweist, - wobei die einzelnen Leiterwindungen (13j) zu insgesamt n elektrischen Strängen (u, v, w) gruppiert sind, - wobei die Leiterwindungen (13j) eines Stranges jeweils wenigstens einen ersten (23a) und einen zweiten Leiterzweig (23b) aufweisen, - wobei diese Leiterzweige (23a, 23b) auf dem überwiegenden Teil (1) ihrer Länge helixartig um die zentrale Achse (A) angeordnet sind - und wobei diese helixartig angeordneten Leiterzweige (23a, 23b) jeweils eine Ganghöhe h aufweisen, die größer ist als das Produkt der axialen Länge 1 der helixartigen Leiterzweige (13j) und der Polzahl p. Weiterhin wird eine elektrische Maschine (1) mit einem derartigen Stator (3) angegeben.</abstract>
    <abstract language="eng">The invention relates to a stator (3) for an electric alternating current machine (1) with a number p of magnetic poles, wherein - the stator (3) has a central axis A, - the stator (3) has a stator winding (4) with a plurality of conductor windings (13j), - the individual conductor windings (13j) are grouped into a total of n electric phases (u, v, w), - the conductor windings (13j) of a phase each have at least a first conductor branch (23a) and a second conductor branch (23b), - said conductor branches (23a, 23b), over most (1) of the length thereof, are arranged in a helical manner around the central axis (A), and - said helically arranged conductor branches (23a, 23b) each have a pitch h greater than the product of the axial length l of the helical conductor branches (13j) and the pole number p. The invention also relates to an electric machine (1) having a stator (3) of this kind.</abstract>
    <abstract language="fra">L’invention concerne un stator (3) destiné à un moteur électrique à courant alternatif (1) comportant un nombre p de pôles magnétiques. Le stator (3) présente un axe central (A), le stator (3) présente un enroulement statorique (4) comportant une pluralité de spires conductrices (13j), les spires conductrices individuelles (13j) sont groupées pour former au total n phases électriques (u, v, w), les spires conductrices (13j) d’une phase présentent chacune au moins une première et une seconde branche conductrice (23a, 23b), lesdites branches conductrices (23a, 23b) sont agencées de manière hélicoïdale autour de l’axe central (A) sur la plus grande partie (1) de leur longueur, et lesdites branches conductrices (23a, 23b) agencées de manière hélicoïdale présentent chacune un pas h qui est plus grand que le produit de la longueur axiale 1 de la branche conductrice hélicoïdale (13j) et du nombre p de pôles. L’invention concerne par ailleurs un moteur électrique (1) muni dudit stator (3).</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018069203&amp;_cid=P20-KU334I-31849-2</identifier>
    <enrichment key="opus.import.data">@patentfrank_helical_2018-1, title = Helical Winding with More Homogeneous Field Utilisation, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018069203&amp;_cid=P20-KU334I-31849-2, holder = SIEMENS AKTIENGESELLSCHAFT, abstract = The invention relates to a stator (3) for an electric alternating current machine (1) with a number p of magnetic poles, wherein - the stator (3) has a central axis A, - the stator (3) has a stator winding (4) with a plurality of conductor windings (13j), - the individual conductor windings (13j) are grouped into a total of n electric phases (u, v, w), - the conductor windings (13j) of a phase each have at least a first conductor branch (23a) and a second conductor branch (23b), - said conductor branches (23a, 23b), over most (1) of the length thereof, are arranged in a helical manner around the central axis (A), and - said helically arranged conductor branches (23a, 23b) each have a pitch h greater than the product of the axial length l of the helical conductor branches (13j) and the pole number p. The invention also relates to an electric machine (1) having a stator (3) of this kind., type = patent, author = Frank, Michael and Grundmann, Jörn and Herranz Gracia, Mercedes and Nick, Wolfgang, urldate = 2021-09-27, date = 2018-04-19, langid = english, note = WO2018069203, keywords = Helical Winding with More Homogeneous Field Utilisation, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/HAFY3ETU/detail.html:text/html,</enrichment>
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    <author>Michael Frank</author>
    <author>Jörn Grundmann</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Wolfgang Nick</author>
  </doc>
  <doc>
    <id>4163</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
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    <title language="eng">Electric Machine (Patent)</title>
    <abstract language="deu">Die Erfindung betrifft eine elektrische Asynchronmaschine (1), insbesondere Induktionsmaschine, umfassend: - einen zylindrischen Stator (2) mit an einem Statorjoch (21) angeordneten Statorzähnen (22), wobei ein Verhältnis einer Jochhöhe (hy1) des Statorjochs (21) in radialer Richtung zu einer Nuthöhe (hn1) der Statornuten (23) in radialer Richtung zwischen 1,75 und 2,5 beträgt; - einen zylindrischen Läufer (4) mit an einem Läuferjoch angeordneten Läuferpolen (42), die durch Kurzschlusswicklungen in einem Läuferkörper (41) definiert sind, wobei ein Verhältnis der Jochhöhe des Läuferkörpers (41) in radialer Richtung zur Nuthöhe der Läufernuten in radialer Richtung zwischen 2 und 2,75 beträgt.</abstract>
    <abstract language="eng">The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising: - a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5; - a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.</abstract>
    <abstract language="fra">L'invention concerne une machine électrique asynchrone (1), notamment un moteur à induction, comprenant : - un stator cylindrique (2) pourvu de dents statoriques (22) disposées sur une culasse statorique (21), un rapport hauteur (hy1) de la culasse statorique (21) dans la direction radiale/hauteur (hn1) des encoches statoriques (23) dans la direction radiale étant comprise entre 1,75 et 2,5 ; - un rotor cylindrique (4) pourvu de pôles rotoriques (42) disposés sur une culasse rotorique et définis par des bobinages court-circuités dans un corps rotorique (41), un rapport hauteur de culasse du corps rotorique (41) dans la direction radiale/hauteur d'encoches rotoriques dans la direction radiale étant compris entre 2 et 2,75.</abstract>
    <identifier type="url">https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2016074828&amp;tab=PCTBIBLIO&amp;_cid=P20-KU336Q-32259-3</identifier>
    <enrichment key="opus.import.data">@patentkelleter_electric_2016, title = Electric Machine, url = https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2016074828&amp;tab=PCTBIBLIO&amp;_cid=P20-KU336Q-32259-3, holder = ROBERT BOSCH GMBH, abstract = The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising: - a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5; - a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75., type = patent, author = Kelleter, Arndt and Ruiz De Larramendi, Miguel and Alexander, Marcus and Herranz Gracia, Mercedes and Heuser, Patrick, urldate = 2021-09-27, date = 2016-05-19, langid = english, note = WO2016074828, keywords = Electric Machine, file = Snapshot:/home/mercedes/snap/zotero-snap/common/Zotero/storage/H2RTIVPT/detail.html:text/html,</enrichment>
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    <author>Arndt Kelleter</author>
    <author>Miguel Ruiz De Larramendi</author>
    <author>Marcus Alexander</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Patrick Heuser</author>
  </doc>
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    <id>4187</id>
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    <publishedYear>2004</publishedYear>
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    <title language="eng">Simulation of permanent-magnet electrical machines and levitation systems using FEM</title>
    <parentTitle language="eng">22nd CAD-FEM User’s Meeting</parentTitle>
    <enrichment key="opus.import.data">@InProceedingsCadfem, title=Simulation of permanent-magnet electrical machines and levitation systems using FEM, author=Schlensok, C. and Brakensiek, D. and Leßmann, M. and Herranz Gracia, M. and Hameyer, K. and Henneberger, G., booktitle=22nd CAD-FEM User’s Meeting, year=2004, month=nov, pages=, adress=Postdam,Germany</enrichment>
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    <author>Christoph Schlensok</author>
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    <author>M. Leßmann</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
    <author>G. Henneberger</author>
  </doc>
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    <pageFirst>327</pageFirst>
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    <title language="eng">Multi-objective optimization of an induction machine using design of experiments</title>
    <abstract language="eng">The evaluation of the electromagnetic, structural and acoustic behavior of an induction machine is computationaly expensive. Optimization algorithms are therefore not applicable. &#13;
This papers demonstrates that the methodology of design of experiments (Taguchi method) has been successfully applied for the multi-objective optimization of such multiphysics devices. A significant improvement of the machine performances can be achieved with this approach after only a few evaluations of the coupled FE model</abstract>
    <parentTitle language="eng">13th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2008MHGDesign.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2008-3, title = Multi-objective optimization of an induction machine using design of experiments, author = Herranz Gracia, M. and Hameyer, K. , booktitle = 13th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC, year = 2008, month = may, pages = 327, address = Athen, Greece, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2008MHGDesign.pdf</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4189</id>
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    <publishedYear>2007</publishedYear>
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    <title language="eng">An energy-based harmonic constitutive law for magnetic cores with hysteresis</title>
    <abstract language="eng">In this paper a phenomenogical energy-based harmonic ferromagnetic material model is presented which considers time-dependent hysteresis losses as a part of the material characteristic. The model is based on the effective reluctivity concept and can be applied to simulate hysteresis losses of electromechanic devices. The hysteresis losses of a C-Core are simulated and compared to the results of an iron loss estimation by loss curves.</abstract>
    <parentTitle language="eng">16th International Conference on the Computation of Electromagnetic Fields</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2007MHHarmHyst.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2007-14, title = An energy-based harmonic constitutive law for magnetic cores with hysteresis, author = Hafner, M. and Henrotte, F. and Herranz Gracia, M. and Hameyer, K. , booktitle = 16th International Conference on the Computation of Electromagnetic Fields, COMPUMAG, year = 2007, month = jun, address = Aachen, Germany, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2007MHHarmHyst.pdf</enrichment>
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    <author>Martin Hafner</author>
    <author>Francois Henrotte</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
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    <id>4190</id>
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    <publishedYear>2007</publishedYear>
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    <title language="eng">Structure-Dynamic Analysis of an Induction Machine depending on Stator-Housing Coupling</title>
    <abstract language="eng">The estimation and calculation of the acoustic sound of electric machinery is of high interest. Various approaches have been presented relying either on analytical or on numerical models. In general, the analytical models are based on the electromagnetic-field theory and the results are compared to measurements. Numerical models allow for the separation of different exciting forces stemming from various effects. In the studied case of an induction motor with squirrel-cage rotor three effects are taken into account in the analytical model: the fundamental field, saturation, and eccentricity. The numerical analysis is applied for the analysis of acoustic sound of an electric machine. Nevertheless, the numerical results have to be verified. Hence, they are compared to the physically based analytical results. The radiated noise depends directly on the surface's deformation of the machine. Therefore, the analysis is focused on the structure-dynamic vibrations. The combined analysis presented here, allows for the reduction of vibrations and noise optimizing the coupling of stator and housing. Here, an induction machine (IM) with squirrel-cage rotor is studied. Its housing is mounted with six spiral-steel springs to the stator. With the presented method the impact of different numbers of springs is analyzed.</abstract>
    <parentTitle language="eng">6th International Machine and Drives Conference, IEMDC</parentTitle>
    <identifier type="doi">10.1109/IEMDC.2007.383657</identifier>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2007CSHousing.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2007-20, title = Structure-Dynamic Analysis of an Induction Machine depending on Stator-Housing Coupling, author = Schlensok, C. and van der Giet, M. and Herranz Gracia, M. and van Riesen, D and Hameyer, K. , booktitle = 6th International Machine and Drives Conference, IEMDC, year = 2007, month = may, address = Antalya,Turkey, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2007CSHousing.pdf</enrichment>
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    <author>Christoph Schlensok</author>
    <author>Michael van der Giet</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Dirk van Riesen</author>
    <author>Kay Hameyer</author>
  </doc>
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    <id>4191</id>
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    <publishedYear>2007</publishedYear>
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    <title language="eng">Influence of the magnetic anisotropy on electrical machines</title>
    <abstract language="eng">Non grain-oriented electrical steel has an inherent anisotropy, which is normally neglected in the calculation of electrical machines. Moreover, the magnetic anisotropy is usually measured in small material samples. Due to the cutting effect, the magnetic anisotropy in the machine is not the same as in the sample. In this paper, the magnetic anisotropy is considered as a global problem. A method to measure it is presented and its influence on the electromagnetic and acoustic behavior is considered through the example of an induction motor.</abstract>
    <parentTitle language="eng">XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2008MHGInfluence.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2007-3, title = Influence of the magnetic anisotropy on electrical machines, author = Herranz Gracia, M. and Hameyer, K. , booktitle = XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF, year = 2007, month = sep, address = Prague, Czech Republic, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2007MHGInfluence.pdf</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4192</id>
    <completedYear/>
    <publishedYear>2007</publishedYear>
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    <title language="eng">Numerical Calculation of Iron Losses in Electrical Machines with a modified Post-Processing Formula</title>
    <parentTitle language="eng">16th International Conference on the Computation of Electromagnetic Fields, COMPUMAG</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2007MHGModified.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2007-9, title = Numerical Calculation of Iron Losses in Electrical Machines with a modified Post-Processing Formula, author = Herranz Gracia, M. and Lange, E. and Hameyer, K. , booktitle = 16th International Conference on the Computation of Electromagnetic Fields, COMPUMAG, year = 2007, month = jun, address = Aachen, Germany, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2007MHGModified.pdf</enrichment>
    <enrichment key="opus.import.dataHash">md5:003ee3d9cadfc82037d432f77c36c4a5</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>E. Lange</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4193</id>
    <completedYear/>
    <publishedYear>2006</publishedYear>
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    <title language="eng">Study of Temperature Rise Problems of Stepper Motors under High Duty Cycle</title>
    <parentTitle language="eng">42nd International Symposium on Electrical Machines, SME</parentTitle>
    <enrichment key="opus.import.data">@InProceedingsC-2006-27, title = Study of Temperature Rise Problems of Stepper Motors under High Duty Cycle, author = Herranz Gracia, M. and Hameyer, K. , booktitle = 42nd International Symposium on Electrical Machines, SME, year = 2006, month = jun, address = Cracow, Poland</enrichment>
    <enrichment key="opus.import.dataHash">md5:ff2f24ba3fd26ee911cbeef92ef30c30</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4204</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>753</pageFirst>
    <pageLast>759</pageLast>
    <pageNumber>7</pageNumber>
    <edition/>
    <issue>3</issue>
    <volume>44</volume>
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    <title language="eng">Structure-Dynamic Analysis of an Induction Machine Depending on Stator-Housing Coupling</title>
    <abstract language="eng">The estimation and the calculation of the acoustic sound of electric machinery are of particular interest nowadays. Various approaches have been presented, relying either on analytical or on numerical models. The analytical models presented here are based on the electromagnetic-field theory. Numerical models are applied to derive the exciting forces stemming from various sources and effects. The numerical results have to be verified. Hence, they are compared with the physically based analytical results. The radiated noise depends directly on the surface deformation of the machine. Therefore, the analysis is focused on the structure-dynamic vibration. The combined analysis presented here allows for the reduction of vibration and noise, optimizing the coupling of the machine's stator and housing. The studied induction machine's housing is mounted with six spiral-steel springs to the stator. With the presented method, the impact of different numbers of springs is analyzed exemplarily.</abstract>
    <parentTitle language="eng">IEEE Transactions on Industry Applications</parentTitle>
    <identifier type="issn">0093-9994</identifier>
    <identifier type="doi">10.1109/TIA.2008.921440</identifier>
    <enrichment key="opus.import.data">@ARTICLE4524005, title=Structure-Dynamic Analysis of an Induction Machine Depending on Stator-Housing Coupling, author=Schlensok, C. and van der Giet, M. and Herranz Gracia, M. and van Riesen, D. and Hameyer, K., journal=IEEE Transactions on Industry Applications, year=2008, month=Mai-Juni, volume=44, number=3, pages=753-759, keywords=asynchronous machines, finite element analysis, vibrationselectric machinery, induction machine, spiral-steel springs, stator-housing coupling, structure-dynamic analysis, doi=10.1109/TIA.2008.921440, ISSN=0093-9994,</enrichment>
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    <author>Christoph Schlensok</author>
    <author>Michael van der Giet</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Dirk van Riesen</author>
    <author>Kay Hameyer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>asynchronous machines</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>finite element analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>vibrationselectric machinery</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>induction machine</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>spiral-steel springs</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>stator-housing coupling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>structure-dynamic analysis</value>
    </subject>
  </doc>
  <doc>
    <id>4205</id>
    <completedYear/>
    <publishedYear>2006</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1211</pageFirst>
    <pageLast>1214</pageLast>
    <pageNumber>4</pageNumber>
    <edition/>
    <issue>4</issue>
    <volume>42</volume>
    <type>article</type>
    <publisherName>IEEE</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Combined Numerical and Analytical Method for Geometry Optimization of a PM Motor</title>
    <abstract language="eng">For the reduction of the cogging torque of permanent-magnet synchronous machines several approaches are known. But cogging torque predictions for arbitrary types of machines using the same approach are still troublesome and imprecise. Therefore, a fast optimization process is developed and presented in this paper. Here, the combination of both numerical and analytical simulation results in such a fast method</abstract>
    <parentTitle language="eng">IEEE Transactions on Magnetics</parentTitle>
    <identifier type="doi">10.1109/TMAG.2006.871379</identifier>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2006CSCombined.pdf</identifier>
    <enrichment key="opus.import.data">@ARTICLE J-2006-10, title = Combined Numerical and Analytical Method for Geometry Optimization of a PM Motor, author = Schlensok, C. and Herranz Gracia, M. and Hameyer, K. , journal = IEEE Transactions on Magnetics, year = 2006, month = April, volume = 43, number = 4, pages = 1211–1214, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2006CSCombined.pdf</enrichment>
    <enrichment key="opus.import.dataHash">md5:bf11e82b5517aa15c9816acc09b3a9d0</enrichment>
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    <author>Christoph Schlensok</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4206</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>875</pageFirst>
    <pageLast>883</pageLast>
    <pageNumber>9</pageNumber>
    <edition/>
    <issue>4</issue>
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    <completedDate>--</completedDate>
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    <title language="eng">Magnetic material optimization for hybrid vehicle PMSM drives</title>
    <abstract language="eng">The motivation of this analysis is the need of high efficiency and high power density permanent magnet synchronous motor (PMSM) drives for use in electrical vehicle power trains. It is clear that the chosen electrical steel for the lamination stack plays an important role, but proper quantification is missing. The purpose of this paper is to formalize the problem of selecting the optimal steel grade for the construction of PMSM’s. This question is important to steel producers, not only for helping customers selecting the most appropriate existing grade for their application, but also for defining the strategic orientation of the further R&amp;D of enhanced electrical steel grades. The notion of steel efficiency is defined and, after describing the FE implementation of iron loss models, a methodology for material optimisation is proposed.</abstract>
    <parentTitle language="eng">World Electric Vehicle Journal</parentTitle>
    <identifier type="issn">2032-6653</identifier>
    <identifier type="doi">10.3390/wevj3040875</identifier>
    <enrichment key="opus.import.data">@Articlewevj3040875, AUTHOR = Jacobs, Sigrid and Hectors, Dietrich and Henrotte, François and Hafner, Martin and Herranz Gracia, Mercedes and Hameyer, Kay and Goes, Patrick, TITLE = Magnetic material optimization for hybrid vehicle PMSM drives, JOURNAL = World Electric Vehicle Journal, VOLUME = 3, YEAR = 2009, NUMBER = 4, PAGES = 875–883, URL = https://www.mdpi.com/2032-6653/3/4/875, ISSN = 2032-6653, ABSTRACT = The motivation of this analysis is the need of high efficiency and high power density permanent magnet synchronous motor (PMSM) drives for use in electrical vehicle power trains. It is clear that the chosen electrical steel for the lamination stack plays an important role, but proper quantification is missing. The purpose of this paper is to formalize the problem of selecting the optimal steel grade for the construction of PMSM’s. This question is important to steel producers, not only for helping customers selecting the most appropriate existing grade for their application, but also for defining the strategic orientation of the further R&amp;amp;D of enhanced electrical steel grades. The notion of steel efficiency is defined and, after describing the FE implementation of iron loss models, a methodology for material optimisation is proposed., DOI = 10.3390/wevj3040875</enrichment>
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    <author>Sigrid Jacobs</author>
    <author>Dietrich Hectors</author>
    <author>François Henrotte</author>
    <author>Martin Hafner</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
    <author>Patrick Goes</author>
  </doc>
  <doc>
    <id>4207</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>30</volume>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Influence and evaluation of non-ideal manufacturing process on the cogging torque of a permanent magnet excited synchronous machine</title>
    <abstract language="eng">Purpose - The purpose of this paper is to describe how a minimisation of cogging torque is performed with respect to the non-ideal manufacturing process, aiming at a robust design of the studied machine, focusing on magnetisation faults and the use of different qualities of the permanent magnet material. Design/methodology/approach - The applied methodology is a combination of design of experiments and finite element analysis to minimise the cogging torque of the estimated machine. Different qualities of the permanent magnet material are investigated by a stochastic analysis. Findings - A robust design of the machine is achieved, which is verified by a stochastic analysis. Furthermore, this analysis shows the strong influence of the magnet quality on the cogging torque. Practical implications - This paper provides a method for a machine design which is robust against non-ideal manufacturing and an approach to prove the use of a bad quality for a possible reduction of the fabrication costs. Originality/value - This paper gives a close insight on how to investigate non-ideal manufacturing and in particular its influence on the cogging torque.</abstract>
    <parentTitle language="eng">COMPEL-The international journal for computation and mathematics in electrical and electronic engineering</parentTitle>
    <identifier type="doi">10.1108/03321641111110843</identifier>
    <enrichment key="opus.import.data">@articlecoenen2011influence, title=Influence and evaluation of non-ideal manufacturing process on the cogging torque of a permanent magnet excited synchronous machine, author=Coenen, Isabel and Herranz Gracia, Mercedes and Hameyer, Kay, journal=COMPEL-The international journal for computation and mathematics in electrical and electronic engineering, year=2011, publisher=Emerald Group Publishing Limited</enrichment>
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    <author>Isabel Coenen</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
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    <id>4208</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
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    <issue>11</issue>
    <volume>14</volume>
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    <title language="eng">Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems</title>
    <abstract language="eng">This paper shows a new concept to generate medium voltage (MV) in wind power application to avoid an additional transformer. Therefore, the generator must be redesigned with additional constraints and a new topology for the power rectifier system by using multiple low voltage (LV) power rectifiers connected in series and parallel to increase the DC output voltage. The combination of parallel and series connection of rectifiers is further introduced as DC-cascade. With the resulting DC-cascade, medium output voltage is achieved with low voltage rectifiers and without a bulky transformer. This approach to form a DC-cascade reduces the effort required to achieve medium DC voltage with a simple rectifier system. In this context, a suitable DC-cascade control was presented and verified with a laboratory test setup. A gearless synchronous generator, which is highly segmented so that each segment can be connected to its own power rectifier, is investigated. Due to the mixed AC and DC voltage given by the DC-cascade structure, it becomes more demanding to the design of the generator insulation, which influences the copper fill factor and the design of the cooling system. A design strategy for the overall generator design is carried out considering the new boundary conditions.</abstract>
    <parentTitle language="eng">Energies</parentTitle>
    <identifier type="issn">1996-1073</identifier>
    <identifier type="doi">10.3390/en14113106</identifier>
    <enrichment key="opus.import.data">@Articleen14113106, AUTHOR = Steffen, Jonas and Lengsfeld, Sebastian and Jung, Marco and Ponick, Bernd and Herranz Gracia, Mercedes and Spagnolo, Aristide and Klöpzig, Markus and Schleicher, Klaus and Schäfer, Klaus, TITLE = Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems, JOURNAL = Energies, VOLUME = 14, YEAR = 2021, NUMBER = 11, ARTICLE-NUMBER = 3106, URL = https://www.mdpi.com/1996-1073/14/11/3106, ISSN = 1996-1073, ABSTRACT = This paper shows a new concept to generate medium voltage (MV) in wind power application to avoid an additional transformer. Therefore, the generator must be redesigned with additional constraints and a new topology for the power rectifier system by using multiple low voltage (LV) power rectifiers connected in series and parallel to increase the DC output voltage. The combination of parallel and series connection of rectifiers is further introduced as DC-cascade. With the resulting DC-cascade, medium output voltage is achieved with low voltage rectifiers and without a bulky transformer. This approach to form a DC-cascade reduces the effort required to achieve medium DC voltage with a simple rectifier system. In this context, a suitable DC-cascade control was presented and verified with a laboratory test setup. A gearless synchronous generator, which is highly segmented so that each segment can be connected to its own power rectifier, is investigated. Due to the mixed AC and DC voltage given by the DC-cascade structure, it becomes more demanding to the design of the generator insulation, which influences the copper fill factor and the design of the cooling system. A design strategy for the overall generator design is carried out considering the new boundary conditions., DOI = 10.3390/en14113106</enrichment>
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    <author>Jonas Steffen</author>
    <author>Sebastian Lengsfeld</author>
    <author>Marco Jung</author>
    <author>Bernd Ponick</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Aristide Spagnolo</author>
    <author>Markus Klöpzig</author>
    <author>Klaus Schleicher</author>
    <author>Klaus Schäfer</author>
  </doc>
  <doc>
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    <publishedYear>2020</publishedYear>
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    <language>eng</language>
    <pageFirst>054002</pageFirst>
    <pageLast>054002</pageLast>
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    <volume>33</volume>
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    <title language="eng">Concept design of a high power superconducting generator for future hybrid-electric aircraft</title>
    <abstract language="eng">he reduction of emission is a key goals for the aviation industry. One enabling technology to achieve this goal, could be the transition from conventional gas turbines to hybrid-electric drive trains. However, the requirements concerning weight and efficiency that come from applications like short range aircraft are significantly higher than what state-of-the-art technology can offer. A key technology that potentially allows to achieve the necessary power and volume densities for rotating electric machines is superconductivity. In this paper we present the concept of a high power density generator that matches the speed of typical airborne turbines in its power class. The design is based on studies that cover topology selection and further electromagnetic, HTS, thermal, structural and cryogenics aspects. All domains were analyzed by means of analytical sizing and 2D/3D FEA modeling. With the help of our digital twin that is a synthesis of these models, we can demonstrate for the first time that under realistic assumptions on material properties gravimetric power densities beyond 20 kW kg−1 can be achieved.</abstract>
    <parentTitle language="eng">Superconductor Science and Technology</parentTitle>
    <identifier type="doi">10.1088/1361-6668/ab695a</identifier>
    <enrichment key="opus.import.data">@articlefilipenko2020concept, title=Concept design of a high power superconducting generator for future hybrid-electric aircraft, author=Filipenko, Mykhaylo and Kühn, Lars and Gleixner, Thomas and Thummet, Martin and Lessmann, Marc and Möller, Dirk and Böhm, Matthias and Schröter, Andreas and Häse, Kerstin and Grundmann, Jörn and Herranz Gracia, Mercedes, journal=Superconductor Science and Technology, volume=33, number=5, pages=054002, year=2020, publisher=IOP Publishing</enrichment>
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    <author>Mykhaylo Filipenko</author>
    <author>Lars Kühn</author>
    <author>Thomas Gleixner</author>
    <author>Martin Thummet</author>
    <author>Marc Lessmann</author>
    <author>Dirk Möller</author>
    <author>Matthias Böhm</author>
    <author>Andreas Schröter</author>
    <author>Kerstin Häse</author>
    <author>Jörn Grundmann</author>
    <author>Mercedes Herranz Gracia</author>
  </doc>
  <doc>
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    <publishedYear>2005</publishedYear>
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    <title language="eng">Structure-Dynamic Simulation of an Induction Maschine with Eccentrically Positioned Squirrel-Cage Rotor</title>
    <parentTitle language="eng">XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF</parentTitle>
    <identifier type="url">https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7414475</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2005-44, title = Structure-Dynamic Simulation of an Induction Maschine with Eccentrically Positioned Squirrel-Cage Rotor, author = Schlensok, C. and Herranz Gracia, M. and Hameyer, K. , booktitle = XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF, year = 2005, month = sep, address = Baiona,Spain</enrichment>
    <enrichment key="opus.import.dataHash">md5:b4637b1638543c4f9fdb3a8a2e5efe31</enrichment>
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    <author>Christoph Schlensok</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
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    <title language="eng">Combined Numerical and Analytical Method for a Geometry Optimization of a PM Motor</title>
    <parentTitle language="eng">16th International Conference on the Computation of Electromagnetic Fields, COMPUMAG</parentTitle>
    <identifier type="url">https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1608430</identifier>
    <enrichment key="opus.import.data">@InProceedingsC-2005-45, title = Combined Numerical and Analytical Method for a Geometry Optimization of a PM Motor, author = Schlensok, C. and Herranz Gracia, M. and Hameyer, K. , booktitle = 16th International Conference on the Computation of Electromagnetic Fields, COMPUMAG, year = 2005, month = jun, address = Shenyang,China, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2005CSGeometryOptPMMotor.pdf</enrichment>
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    <author>Christoph Schlensok</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
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    <title language="eng">Comparison of 2D Simulation and analytical calculation of the short-circuit behaviour of a permanent-magnet synchronous machine</title>
    <parentTitle language="eng">XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2005MHGShort.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingstest, title = Comparison of 2D Simulation and analytical calculation of the short-circuit behaviour of a permanent-magnet synchronous machine, author = Herranz Gracia, M. and Hameyer, K. , booktitle = XIII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF, year = 2005, month = sep, address = Baiona,Spain</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4197</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
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    <title language="eng">Analysis of noise exciting magnetic force waves by means of numerical simulation and a space vector definition</title>
    <parentTitle language="eng">XVIII International Conference on Electrical Machines, ICEM</parentTitle>
    <identifier type="url">https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4800055</identifier>
    <enrichment key="opus.import.data">@InProceedingsrothe:icem, author = van der Giet, M. and Rothe, R. and Herranz Gracia, M. and Hameyer, K., title = Analysis of noise exciting magnetic force waves by means of numerical simulation and a space vector definition, booktitle = XVIII International Conference on Electrical Machines, ICEM, address = Vilamoura, Portugal, month = sep, year = 2008</enrichment>
    <enrichment key="opus.import.dataHash">md5:467061e229f4bb858499ceb73d377a21</enrichment>
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    <author>Michael van der Giet</author>
    <author>R. Rothe</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4198</id>
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    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
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    <title language="eng">Effect of non-sinusoidal currents on the acoustic noise excitation of induction motors</title>
    <parentTitle language="eng">13th IGTE Symposium</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2008MHGNonSin.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsigte1, title= Effect of non-sinusoidal currents on the acoustic noise excitation of induction motors, author=Herranz Gracia, M. and Hameyer, K. , booktitle = 13th IGTE Symposium, year=2008, month= sep, address = Graz, Austria</enrichment>
    <enrichment key="opus.import.dataHash">md5:8e7e4d801d22927c8b7b238d257bd299</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
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    <publishedYear>2008</publishedYear>
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    <title language="eng">Comparision of numerical methods for the prediction of cogging torque in 2D and 3D</title>
    <parentTitle language="eng">13th IGTE Symposium</parentTitle>
    <identifier type="url">http://bib.iem.rwth-aachen.de/IEMpublications/AltesBib/2008MHGCogging.pdf</identifier>
    <enrichment key="opus.import.data">@InProceedingsigte2, title=Comparision of numerical methods for the prediction of cogging torque in 2D and 3D, author=Herranz Gracia, M. and Hameyer, K. , booktitle = 13th IGTE Symposium, year=2008, month= sep, address = Graz, Austria</enrichment>
    <enrichment key="opus.import.dataHash">md5:6746f7244c7ff36fa3cbac4568a9097a</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
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    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>5</pageLast>
    <pageNumber>5</pageNumber>
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    <title language="eng">Design of a Medium Voltage Generator and Power Converter for High Power Wind Energy Conversion Systems</title>
    <parentTitle language="eng">2020 55th International Universities Power Engineering Conference (UPEC)</parentTitle>
    <identifier type="doi">10.1109/UPEC49904.2020.9209886</identifier>
    <enrichment key="opus.import.data">@INPROCEEDINGS9209886, author=Jonas, Steffen and Lengsfeld, Sebastian and Jung, Marco and Ponick, Bernd and Herranz Gracia, Mercedes and Spagnolo, Aristide and Schleicher, Klaus, and Schäfer, Klaus, booktitle=2020 55th International Universities Power Engineering Conference (UPEC), title=Design of a Medium Voltage Generator and Power Converter for High Power Wind Energy Conversion Systems, year=2020, volume=, number=, pages=1-5, doi=10.1109/UPEC49904.2020.9209886</enrichment>
    <enrichment key="opus.import.dataHash">md5:eaf960e7ea9727bf1d1cd02329f7c756</enrichment>
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    <author>Steffen Jonas</author>
    <author>Sebastian Lengsfeld</author>
    <author>Marco Jung</author>
    <author>Bernd Ponick</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Aristide Spagnolo</author>
    <author>Klaus, Schleicher</author>
    <author>Klaus Schäfer</author>
  </doc>
  <doc>
    <id>4202</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>39</pageFirst>
    <pageLast>46</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>30</volume>
    <type>article</type>
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    <completedDate>--</completedDate>
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    <title language="eng">Influence of the magnetic anisotropy on electrical machines</title>
    <abstract language="eng">Non grain-oriented electrical steel has an inherent anisotropy, which is normally neglected in the calculation of electrical machines. Moreover, the magnetic anisotropy is usually measured in small material samples. Due to the cutting effect, the magnetic anisotropy in the machine is not the same as in the sample. In this paper, the magnetic anisotropy is considered as a global problem. A method to measure it is presented and its influence on the electromagnetic and acoustic behavior is considered through the example of an induction motor.</abstract>
    <parentTitle language="eng">Advanced Computer Techniques in Applied Electromagnetics - &#13;
Studies in Applied Electromagnetics and Mechanics</parentTitle>
    <identifier type="doi">10.3233/978-1-58603-895-3-39</identifier>
    <enrichment key="opus.import.data">@articlegracia2008influence, title=Influence of the magnetic anisotropy on electrical machines, author=Herranz Gracia, M and Hameyer, K, journal=Advanced Computer Techniques in Applied Electromagnetics, volume=30, pages=39, year=2008, publisher=IOS Press</enrichment>
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    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4203</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>922</pageFirst>
    <pageLast>925</pageLast>
    <pageNumber>4</pageNumber>
    <edition/>
    <issue>6</issue>
    <volume>44</volume>
    <type>article</type>
    <publisherName>IEEE</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
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    <completedDate>--</completedDate>
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    <title language="eng">An Energy-Based Harmonic Constitutive Law for Magnetic Cores With Hysteresis</title>
    <abstract language="eng">In this paper, a phenomenological energy-based material model for ferromagnetic materials under harmonic conditions is presented. The model is based on the concept of a complex effective permeability and an accurate representation of energy is adopted as identification criteria. The material model is implemented in a time-harmonic finite element model, which allows to solve for the loss characteristics of electromagnetic devices. Identification is based on measured hysteresis loops and no additional fitting parameters are required. Hysteresis losses in a ferromagnetic C-core and a ferromagnetic torus are simulated and compared to the results obtained by means of tabulated loss characteristics.</abstract>
    <parentTitle language="eng">IEEE Transactions on Magnetics</parentTitle>
    <identifier type="doi">10.1109/TMAG.2007.916141</identifier>
    <enrichment key="opus.import.data">@ARTICLE J-2008-4, title = An Energy-Based Harmonic Constitutive Law for Magnetic Cores With Hysteresis, author = Hafner, M. and Henrotte, F. and Herranz Gracia, M. and Hameyer, K. , journal = IEEE Transactions on Magnetics, year = 2008, month = jun, volume = 44, number = 6, pages = 922–925, url = http://www.iem.rwth-aachen.de/uploads/bibliotest/2008MHHarmHyst.pdf</enrichment>
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    <author>Martin Hafner</author>
    <author>Francois Henrotte</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Kay Hameyer</author>
  </doc>
  <doc>
    <id>4759</id>
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    <publishedYear>2023</publishedYear>
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    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>8</pageNumber>
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    <title language="eng">Consideration of the influence of manufacturing tolerances in the design process of electrical machines using the example of a permanent magnet synchronous machine</title>
    <abstract language="eng">The production process of electrical machines is subject to manufacturing and material tolerances. These tolerances have an influence on both, the mean torque and the torque ripple. Consequently, they exert an active influence on the speed-torque map (operating points), as well as the equivalent circuit diagram parameters for a permanent magnet synchronous machine, and the operational behavior (efficiency, noise development) of the electrical machine. In addition to striving lower costs, there is a growing emphasis on achieving higher energy efficiency. Thus, an accurate prediction of machine parameters is still essential during the early development process, despite manufacturing-related deviations. &#13;
In this study, the prediction of machine parameters is demonstrated using the example of a PMSM.</abstract>
    <identifier type="urn">urn:nbn:de:bvb:863-opus-47594</identifier>
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    <licence>Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International</licence>
    <author>Marcel Müller</author>
    <author>Marcel Heilmann</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Joachim Kempkes</author>
    <author>Martin Häfner</author>
    <author>Manuel Becher</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>manufacturing and material tolerances</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>reduced order model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Maximum Torque per Ampere</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Monte Carlo Simulation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sensitivity Analysis</value>
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    <collection role="institutes" number="ttzemo">Technologietransferzentrum Elektromobilität (TTZ-EMO)</collection>
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    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>179-184</pageNumber>
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    <title language="deu">PyEMMO - a Python based software for the finite element modelling of electrical machines in ONELAB</title>
    <abstract language="eng">Multi-objective optimizations are almost essential in the design process of electrical machines due to constantly increasing requirements for efficiency and power density. In this context, open-source simulation software offers the possibility to parallelize calculations free of license costs and thus to achieve a reduced calculation time. This paper presents the software project PyEMMO (Python Electrical Machine Modeling in ONELAB) for the finite element simulation of electrical machines in the open source program ONELAB. The object-oriented program structure and the objectives of the project are the main focus. Furthermore, the latest features are discussed, which include the geometry definition via a toolbox system, the simulation data interface based on the JSON file format and the calculation of iron losses.</abstract>
    <abstract language="deu">Multizieloptimierungen sind im Designprozess elektrischer Maschinen aufgrund stetig steigender Anforderungen an Wirkungsgrad und Leistungsdichte nahezu unabdingbar. Dabei bietet Open-Source Simulationssoftware die Möglichkeit lizenzkostenfrei Berechnungen zu parallelisieren und somit eine reduzierte Berechnungszeit zu erreichen. Dieser Beitrag stellt das hierfür initiierte Softwareprojekt PyEMMO (Python Electrical Machine Modeling in ONELAB) für die Finite-Elemente-Simulation elektrischer Maschinen im Open-Source-Programm ONELAB vor. Die objektorientierte Programmstruktur und die Ziele des Projekts stehen hierbei im Vordergrund. Des Weiteren wird auf den aktuellen Funktionsumfang eingegangen, welcher unter anderem die Geometriedefinition über ein Baukastensystem, das Simulationsdateninterface basierend auf dem JSON-Dateiformat und die Berechnung der Eisenverluste beinhaltet.</abstract>
    <parentTitle language="eng">15. International conference on electric vehicle drives and e-mobility</parentTitle>
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    <licence>Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International</licence>
    <author>Max Schuler</author>
    <author>Mercedes Herranz Gracia</author>
    <author>Joachim Kempkes</author>
    <author>Marcel Heilmann</author>
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    <subject>
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    <subject>
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    <title language="eng">Improved Calculation of the Force Density in the Air Gap of a Squirrel Cage Induction Machine for NVH Simulation</title>
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