TY - THES A1 - Scheffler, Thomas T1 - Werkstoffeinflüsse auf den Spritzgussprozess von hochgefüllten Phenol-Formaldehydharz­ Formmassen N2 - Im Rahmen der vorliegenden Arbeit wurden verschiedene duroplastische Formmassen laboranalytisch hinsichtlich der rheologischen und thermischen Eigenschaften untersucht. Es wurde u.a. gezielt die absolute Materialfeuchte gesteigert, um den Einfluss dieser auf das Fließ­ Härtungsverhalten zu charakterisieren. Anschließend wurden die Materialien auf einer hochinstrumentierten Spritzgussmaschine mit einem Fließspiralenwerkzeug untersucht. Dabei konnte ein direkter Zusammenhang zwischen dem Rückfluss und dem Plastifizierdrehmoment in Abhängigkeit der Materialfeuchte und der Prozessparameter detektiert werden . Des Weiteren wurden über die Differenzdruckmessung im Fließspiralenwerkzeug die scheinbaren Viskositäten über den Fließweg ermittelt. Hierbei konnten unterschiedliche Aufschmelzeffekte über die Fließweglänge in Abhängigke it der duroplastischen Formmasse, der absoluten Materialfeuchte und der Prozessparameter detektiert werden . Durch Schererwärmung konnte die Formmassentemperatur teilweise die Werkzeugtemperatur übersteigen. Hinsichtlich der mechanischen Eigenschaften (Schlagzähigkeit, Biegefestigkeit) konnten keine signifikanten Einflussgrößen detektiert werden. Hinsichtlich des Tg konnten systematischen Unterschiede detektiert und begründet werden. Die beste Möglichkeit zur Ermittlung des Tg lieferte die TMA. Die thermischen Glasübergänge korrelieren mit den in der DSC ermittelten Aushärtegraden , wobei mit steigender Materialfeuchte ein geringer Aushärtegrad detektiert wird. KW - Duroplaste KW - duroplastische Formmassen KW - Phenolharz KW - Feuchtegehalt KW - Rotationsrheometer KW - Hochdruck-DSC KW - Fließspirale KW - Forminnendruckmessung KW - Aushärtegrad Y1 - 2019 UR - http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa2-322005 ER - TY - JOUR A1 - Hartmann, M. A1 - Barth, S. A1 - Karlinger, Peter A1 - Schemme, Markus A1 - Michanickl, Andreas T1 - Zusammen maßnehmen BT - Verfahrensentwicklung zum Hinterspritzen von Holzfurnieren am Beispiel eines Zollstocks JF - Kunststoffe KW - Holzfurniere KW - Maßnehmen Y1 - 2016 IS - 7/2016 ER - TY - JOUR A1 - Zillmer, M. A1 - Karlinger, Peter A1 - Zentgraf, Peter A1 - Würtele, M. A1 - Grimm, G. A1 - Wolf, W. T1 - Vorausschauende Zylindertemperierung BT - Modellprädiktive Regelung verkürzt den Aufheizvorgang und erhöht die Energieeffizienz JF - Kunststoffe KW - Modellprädikative Regelung KW - Aufheizvorgang Y1 - 2016 IS - 10/2016 ER - TY - CHAP A1 - Ragai, A1 - Schwabenbauer, A1 - Eser, A1 - Müller, ED - ASME, T1 - Effect of Process Parameters on the Electrically-Assisted Sintered Iron-Copper Powder Metals BT - Volume 2: Advanced Manufacturing T2 - ASME 2018 International Mechanical Engineering Congress and Exposition N2 - Electric-current-assisted sintering (ECAS) is a novel process that can potentially replace the conventional sintering method. It is hypothesized that the process can reduce the sintering time and can be used in situ; thus, can be more cost effective. The purpose of this research is to investigate the effect of direct current on the sintered properties of iron-copper powder metal. Experiments were conducted at various conditions to determine the optimal process parameters for this particular powder metal. The parameters investigated were electric current levels and energizing time. Experiments also included sintering the powder using a conventional furnace. Samples from both types of experiments were compared to determine the metallurgical differences due to the sintering process. Mechanical and microstructure examination were conducted to aid in determining the feasibility of ECAS. KW - Electric-current-assisted sintering Y1 - 2018 SN - 978-0-7918-5201-9 U6 - https://doi.org/10.1115/IMECE2018-86891 ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Versen, Martin ED - Bauer, Benedict ED - Wittenberg, Carsten T1 - Bestimmung einer Quanteneffizienz für das automatisierte Sortieren von Kunststoffen durch Fluoreszenz T2 - AALE 2019 - Autonome und intelligente Systeme in der Automatisierungstechnik 16. Fachkonferenz KW - Quanteneffizienz KW - Fluoreszenz Y1 - 2019 SN - 978-3-8007-4860-0 SP - 179 EP - 187 PB - VDE Verlag CY - Berlin ER - TY - CHAP A1 - Kneißl, M. A1 - Versen, Martin ED - Bauer, Benedict ED - Wittenberg, Carsten T1 - Erhöhung der Bandbreite eines Stromregelkreises durch Hadamard-Modulation T2 - AALE 2019 - Autonome und intelligente Systeme in der Automatisierungstechnik 16. Fachkonferenz KW - Hadamard-Modulation Y1 - 2019 SN - 978-3-8007-4860-0 SP - 277 EP - 285 PB - VDE Verlag CY - Berlin ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Versen, Martin T1 - Detektion von Kunststoffen in Wasser mithilfe von Fluoreszenz T2 - 20. GMA/ITG-Fachtagung Sensoren und Messsysteme 2019 N2 - Die wohl größte aktuelle Umweltverschmutzung mit Kunststoffen findet in Ozeanen, Seen und Flüssen statt. Bis jetzt gibt es kein etabliertes Verfahren, mit dem Kunststoffe in Umwelt- bzw. Wassermatrizen detektiert werden können. Deshalb wird mit einem Verfahren, welches auf dem Prinzip der Fluoreszenz basiert, untersucht, ob unter Laborbedingungen Kunststoffe in Wasser detektiert und identifiziert werden können. Anhand eines mathematischen Modells, einer Simulation und mit Hilfe von optischen Experimenten wird gezeigt, dass der Nachweis und auch eine Identifikation von Kunststoffen in Abhängigkeit der Wassertiefe, mit diesem Verfahren möglich ist. KW - Kunststoffe KW - Umwelt KW - Fluoreszenzmesstechnik KW - Fluoreszenz Y1 - 2019 SN - 978-3-9819376-0-2 SP - 687 EP - 694 PB - AMA Service GmbH CY - Wunstorf ER - TY - CHAP A1 - Versen, Martin ED - Gandhi, Tejinder T1 - DRAM Failure Analysis and Defect Localization Techniques T2 - Microelectronics Failure Analysis, Desk Reference KW - Failure Analysis Y1 - 2019 SN - 978-1-62708-247-1 SP - 499 EP - 505 PB - ASM International CY - Ohio ET - Seventh Edition ER - TY - JOUR A1 - Hummel, Sabine A1 - Schemme, Micheal A1 - Karlinger, Peter T1 - GmbH – Glasfaserhybride mit bester Haftung: Variotherme Temperierung für Organobleche JF - Plastverarbeiter N2 - Durch Integrieren der Variothermie können Organobleche wirtschaftlich und technisch verbessert zu Hybridbauteilen verarbeitet werden. Somit steigert sich der Wettbewerbsvorteil gegenüber konventionellen Werkstoffen weiter. An einer Technische Hochschule wird seit mehr als zehn Jahren intensiv an der Thematik der Verbindungstechnologien sowie den Haftungsmechanismen zwischen endlosfaserverstärkten Thermoplasten, den sogenannten Organoblechen, und angespritzten Funktionsstrukturen geforscht. Im Fokus stehen prozesstechnische Einflüsse, die die Verbundhaftung der Hybridleichtbaustrukturen erhöhen. KW - Organoblech KW - Variotherm KW - Verbundhaftung KW - langfaser verstärkte Thermoplaste Y1 - 2019 UR - https://www.plastverarbeiter.de/88054/variotherme-temperierung-fuer-organobleche/ VL - 07/2019 IS - 07 PB - Hüthig GmbH CY - Heidelberg ER - TY - CHAP A1 - Schemme, Michael A1 - Dittmar, Harri A1 - Karlinger, Peter A1 - Hummel, Sabine T1 - Closed-Loop-Recycling - Strategien für endlosfaserverstärkte thermoplastische Hybridstrukturen (Vortrag) T2 - FOREL Kolloquium KW - Closed-Loop-Recycling KW - Orgnoblech KW - Recycling KW - Spritzguss KW - Faserverbund Y1 - 2019 ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Versen, Martin A1 - Langhals, H. T1 - A method for sorting of plastics with an apparatus specific quantum efficiency approach T2 - 2019 IEEE Sensors Applications Symposium (SAS) N2 - Today, the automatic separation of polymers from each other in an industrial scale is an unsolved problem. In laboratory environments, two methods are known whereby plastic is sorted either by color or by fluorescence decay time measurements that require fast synchronization and thus expensive equipment. A simple and pragmatic process is proposed to separate plastics from each other: all fluorescent photons are counted in relation to the absorbed photons. A theoretical model and an experimental setup are built in order to determine an apparatus specific quantum efficiency. KW - polymer KW - plastic sorting KW - fluorescence KW - quantum efficiency Y1 - 2019 UR - https://ieeexplore.ieee.org/document/8706034 ER - TY - THES A1 - Stubenrauch, Franz J. T1 - Halbleiter großer Bandlückenenergie in Stromrichtern mit Spannungszwischenkreis zur Ansteuerung dynamischer Servoantriebe N2 - Die vorliegende Arbeit untersucht den Einsatz von Halbleitern großer Bandlückenenergie, wie Siliziumkarbid und Galliumnitrid, in Stromrichtern der Antriebstechnik. Diese Halbleiter weisen im Vergleich zu bipolaren IGBTs geringere Schaltverluste auf, wodurch die Schaltfrequenz deutlich erhöht werden kann. Das ermöglicht den Einsatz von Motorfiltern kompakter Bauform und geringen Kosten. Als Ergebnis erhält man einen Stromrichter mit hoher Stromreglerbandbreite und nahezu ideal sinusförmigen Ausgangsspannungen mit geringen Signalverzerrungen. KW - Elektrotechnik Y1 - 2019 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20190107-1452832-1-0 ER - TY - THES A1 - Wittmann, Josef T1 - Beschleunigungsregelung von Servoantrieben basierend auf Positionsmesswerten N2 - In der vorliegenden Arbeit wird der Einfluss einer Beschleunigungsregelung auf das Regelverhalten von Servoantrieben untersucht. Auf einen Beschleunigungssensor wird verzichtet. Die Istbeschleunigung wird aus dem Positionsmesswert berechnet. Anhand eines verifizierten Modells für Positionsmessfehler wird der Einfluss der Positionsauflösung und der Messsignalqualität auf die berechnete Beschleunigung dargestellt. Basierend auf diesen Ergebnissen wird das Konzept einer kombinierten Strom- und Beschleunigungsregelung entwickelt und dessen Funktionalität nachgewiesen. KW - Elektrotechnik Y1 - 2019 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20190107-1452670-1-0 ER - TY - RPRT A1 - Karlinger, Peter T1 - Prozessoptimierung und Energieeffizienz: Forschung an Reinräumen in der Kunststoffproduktion KW - Reinraum Y1 - 2018 ER - TY - CHAP A1 - Karlinger, Peter T1 - Kunststoffe für Produkte in Reinraumanwendungen T2 - 17. Expertentage – Innovationen KW - Reinraum Y1 - 2018 ER - TY - CHAP A1 - Karlinger, Peter A1 - Dittel, G. A1 - Bürkle, E. T1 - Benedigtbeuerer Reinraumtage T2 - Benedigtbeuerer Reinraumtage, Tagungshandbücher, 2002 – 2015. KW - Reinraum Y1 - 2015 ER - TY - CHAP A1 - Karlinger, Peter T1 - Werkzeugkonstruktion T2 - : Werkzeugbau in der Kunststoffverarbeitung KW - Werkzeugkonstruktion Y1 - 2018 PB - Carl Hanser Verlag CY - München ER - TY - GEN A1 - Karlinger, Peter ED - Karlinger, Peter T1 - Spritzgießmaschinen und Spritzgießen KW - Spritzguss Y1 - 2018 ER - TY - CHAP A1 - Karlinger, Peter T1 - Kunststoff-Fertigung unter quasi Reinraumbedingungen, eine Produktionsumgebung für aktuelle und neue Technologien Bitte partikelfrei! T2 - Technische Sauberkeit in der Kunststoff-Fertigung KW - Reinraum Y1 - 2018 ER - TY - CHAP A1 - Eben, J. A1 - Karlinger, Peter A1 - Gehde, M. T1 - "Bitte nicht Stören" - Analyse des Störgrößeneinflusses auf Prozess und Qualität T2 - 23. Fachtagung TECHNOMER 2013 14./15. November 2013 KW - Analyse Störgrößeneinfluss Y1 - 2013 ER - TY - RPRT A1 - Karlinger, Peter T1 - Kunststoff-Fertigung unter quasi Reinraumbedingungen Vortrag zum Clustertreffen Medizintechnik. T2 - Clustertreffen Medizintechnik KW - Reinraum Y1 - 2018 ER - TY - CHAP A1 - Späth, Michael A1 - Karlinger, Peter T1 - Optimierungspotenziale beim Spritzgießen durch Prozessüberwachung und moderne Regelmethoden T2 - Spritzgießertagung Baden-Baden KW - Spritzguss KW - Prozessüberwachung Y1 - 2017 ER - TY - JOUR A1 - Karlinger, Peter T1 - Rückblick auf die Benediktbeurer Reinraumtage 2014 Schriftliches Interview JF - Cleanroom Magazin KW - Reinraum Y1 - 2018 IS - 2/2014 ER - TY - CHAP A1 - Karlinger, Peter T1 - Einfluss der Verarbeitung auf die Bauteilqualität T2 - 4. VDI-Fachkonferenz Kunststoffe in optischen Systemen KW - Kunststoffe KW - optische Systeme Y1 - 2018 ER - TY - JOUR A1 - Hartmann, Markus A1 - Karlinger, Peter A1 - Würtele, Martin T1 - Optimieren durch Simulieren JF - Kunststoffe KW - Simulation KW - Kunststofftechnik Y1 - 2015 IS - 11/2015 PB - Carl Hanser Verlag ER - TY - BOOK A1 - Karlinger, Peter A1 - Bürkle, A1 - Wobbe, T1 - Reinraumtechnik in der Kunststoffverarbeitung KW - Reinraum KW - Kunststoffverarbeitung Y1 - 2018 SN - ISBN 978-3-446-43,428-8 PB - Carl Hanser Verlag CY - München ER - TY - RPRT A1 - Schemme, M. A1 - Michanickl, A. A1 - Karlinger, Peter T1 - Kompetenz-Zentrum Holz-Kunststoff, Partnering-Veranstaltung für Holz- und biobasierte Werkstoffe und Verbundwerkstoffe KW - biobasierte Werkstoffe KW - Holzwerkstoffe KW - Verbundwerkstoffe Y1 - 2017 ER - TY - CHAP A1 - Scheffler, T. A1 - Gehde, M. A1 - Späth, M. A1 - Karlinger, Peter T1 - Determination of the flow and curing behavior of highly filled phenolic injection molding compounds by means of spiral mold T2 - PPS Chemnitz KW - Spritzguss KW - molding compounds Y1 - 2017 ER - TY - JOUR A1 - Karlinger, Peter A1 - Schwachulla, T. T1 - Multifunktionale Naturfaser-Kunststoff-Composites JF - Firmenzeitschrift Motan KW - Naturfaser-Kunststoff-Composites Y1 - 2018 IS - 4.Quartal 2017 ER - TY - CHAP A1 - Späth, Michael A1 - Zillmer, Markus A1 - Karlinger, Peter A1 - Schemme, Michael A1 - Gehde, Michael T1 - Einfluss des zeitabhängigen Materialzustands beim Spritzgießen von rieselfähigen, duromeren Formmassen auf den Prozess und die Bauteileigenschaften T2 - Technomer Chemnitz KW - Spritzguss Y1 - 2017 ER - TY - JOUR A1 - Karlinger, Peter A1 - Schadhauser, M. A1 - Martin, J. A1 - Würtele, M. A1 - Modler, N. T1 - Homogenität ist der Schlüssel JF - Kunststoffe KW - Kunststoffe Y1 - 2018 IS - 9/2017 ER - TY - RPRT A1 - Karlinger, Peter A1 - Mercado-Colmenero, Jorge Manuel A1 - Rubio-Paramio, Miguel Angel A1 - Martin-Doñate, Cristina T1 - A new procedure for calculating cycle time in injection molding based on plastic part geometry recognition KW - Spritzguss Y1 - 2018 ER - TY - CHAP A1 - Schemme, Markus A1 - Michanickl, Andreas A1 - Karlinger, Peter T1 - Neue Naturfaser - Kunststoffverfahren und - werkstoffe für den Fahrzeug-, Holz- und Möbelbau T2 - 2. Kooperationsforum „Holz als neuer Werkstoff“ Regensburg KW - Holz KW - Naturfaser-Kunststoffverfahren Y1 - 2015 ER - TY - CHAP A1 - Karlinger, Peter T1 - Internationales Kunststoffsymposium São Paulo MODERAÇÃO T2 - Visão Geral - 4.0 Aktueller Stand und Entwicklung KW - Kunststoffe Y1 - 2018 ER - TY - JOUR A1 - Karlinger, Peter A1 - Hartmann, Markus A1 - Barth, Simon A1 - Schemme, Michael A1 - Michanickl, Andreas T1 - Holzoberflächen an Kunststoffteilen JF - Zeitschrift Kunststoffe KW - Holzoberflächen KW - Kunststoffteile Y1 - 2018 ER - TY - JOUR A1 - Karlinger, Peter A1 - Zillmer, Markus A1 - Zentgraf, Peter A1 - Würtele, Martin A1 - Grimm, Günther T1 - Neue Regler für Plastizfierungen an Spritzgießmaschinen JF - Zeitschrift Kunststoffe KW - Spritzguss KW - Spritzgießmaschinen Y1 - 2018 ER - TY - JOUR A1 - Karlinger, Peter A1 - Barth, Simon A1 - Hartmann, Markus A1 - Michanickl, Andreas A1 - Schemme, Michael T1 - Einen Bund eingehen JF - Bauen mit Holz KW - Holzbau Y1 - 2018 ER - TY - CHAP A1 - Versen, Martin A1 - Kipfelsberger, S. T1 - Introduction to microcomputer technology with the MSP430 Launch Pad in remote labs T2 - Global Engineering Education Conference (EDUCON), 2014 IEEE N2 - Texas Instruments' MSP430 Launch Pad is used as a key component for remote labs that complement an introduction course to microcomputer technology in the bachelor program Mechatronic at the University of Applied Sciences in Rosenheim. The remote labs use breakout boards and include a timer experiment with generation of pulse width modulation signals, I2C communication and analog to digital conversion. KW - Microelectronics KW - Microcomputer KW - MSP430 Launch Pad Y1 - 2018 ER - TY - CHAP A1 - Versen, Martin A1 - Bernhardt, A1 - Heigl, M. A1 - Viehhauser, P. A1 - Zentgraf, P. T1 - System for real-time data acquisition and processing on a hail-fighter aeroplane T2 - Proceedings of the 5th European DSP Education and Research Conference N2 - The System HAILsens implements a device for Real-Time sensor data processing, running on a Texas Instruments Concerto M3 core. An I2C interface is used for sensor communications. Ethernet with UDP on a custom developed three layered frame organisation of sensor data serves as a link to the main system on board of an aeroplane. For backing up the acquired data, all frames are locally stored on an SD Card. To have the possibility of easily checking the current system status, an LCD module and a push-button provide a minimal user interface. KW - sensors KW - aircraft instrumentation KW - data acquisition KW - liquid crystal displays Y1 - 2018 ER - TY - CHAP A1 - Versen, Martin T1 - DRAM Failure Analysis and Defect Localization Techniques, Microelectronics Failure Analysis T2 - Desk Reference Sixth Edition N2 - Comprehensive guide to the process and test methods used for electronic device failure analysis. Contains dozens of articles—contributed by industry experts—covering a wide range of topics involving the failure analysis of microelectronics. It places the most important and up-to-date information on this subject at your fingertips.  Topic coverage includes:  Failure Analysis Process Flow Failure Verification  Failure Modes and Failure Classification  Special Devices (MEMS, Optoelectronics, Passives)  Fault Localization Techniques: Package Level (NDT)  Die Level (Depackaging, Photon Emission, Microthermography, Laser-Based Methods, Particle Beam Methods)  Deprocessing & Imaging Techniques: Deprocessing  General Imaging Techniques  Local Deprocessing & Imaging  Circuit Edit and Design Modification  Material Analysis Techniques  Reference Information: Important Topics for Semiconductor Devices  Failure Analysis Techniques Roadmap  Failure Analysis Operations and Management  Appendices: Failure Analysis Terms, Definitions, and Acronyms  Industry Standards KW - Microelectronics KW - DRAM Failure Analysis Y1 - 2018 PB - ASM International CY - Ohio ER - TY - CHAP A1 - Versen, Martin A1 - Shankar, S. A1 - Enimidisetty, S. A1 - Bernhardt, A. A1 - Srinivasan, B. T1 - Setup for Locating PV-Cell Surface Defects Through ISC Measurements T2 - Proceedings of the 37th ISTFA 2011 KW - Photovoltaik KW - PV-Cell defects KW - ISC Measurements Y1 - 2018 ER - TY - CHAP A1 - Versen, Martin T1 - Worst Case Test Conditions for Defect Localization in DRAM Devices T2 - Microelectronics Seminar of the ISTFA 2011 KW - DRAM Devices KW - Microelectronics Y1 - 2018 ER - TY - CHAP A1 - Wittmann, Josef A1 - Hagl, Rainer T1 - Gleichlaufschwankungen in Servoantrieben T2 - Fortschritte in der Antriebs- und Automatisierungstechnik (FAA), Stuttgart KW - Elektrische Antriebssysteme KW - Leistungselektronik  KW - Automatisierungstechnik Y1 - 2016 ER - TY - CHAP A1 - Wittmann, Josef A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Influence of Position Measuring Errors on Speed Ripple in Servo Drives T2 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM, Capri, Italy N2 - Position measuring devices with sinusoidal measuring signals are widely used in position-controlled servo drives in industrial automation, e.g., for machine tools or semiconductor production machines. Usually, the feedback signal for the speed or velocity controller is calculated from the measured position. Therefore, position measuring errors affect these control loops. This study presents an analytic error model that considers non-ideal sinusoidal measuring signals with basic deviations (amplitude differences, offset errors, and phase shift) as well as signal harmonics. The model was used to systematically investigate the influence of signal quality and the number of signal periods from position measuring devices on speed ripple, across a wide range of speeds. A test stand with a high-resolution reference angle measuring device was used to confirm the results. KW - Elektrische Antriebssysteme KW - Leistungselektronik  KW - Automatisierungstechnik KW - Power Electronics KW - Electrical Drives KW - Automation and Motion Y1 - 2016 UR - https://doi.org/10.1109/SPEEDAM.2016.7525816 ER - TY - CHAP A1 - Wittmann, Josef A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Hybrid Current and Acceleration Control of Servo Drives T2 - PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg N2 - A hybrid current and acceleration control is presented and shown to improve the load disturbance behavior of servo drives significantly without additional sensor effort. The feedback signal of the acceleration control loop is calculated from the position data of the motor encoder. Hence, position measuring errors influence this control loop and lead to speed ripple. Therefore, the presented design of the acceleration control loop considers both load sensitivity and position measuring errors. KW - Elektrische Antriebssysteme KW - Leistungselektronik  KW - Servo drives KW - Electrical drives Y1 - 2017 ER - TY - CHAP A1 - Höllthaler, Julia A1 - Hagl, Rainer T1 - Plattformunabhängige modellbasierte Entwicklung von hochdynamischen Antriebsregelungen T2 - MATLAB EXPO 2017 Deutschland, München, 27. Juni 2017 KW - Elektrische Antriebssysteme KW - Leistungselektronik  KW - hochdynamische Antriebsregelungen Y1 - 2017 ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Wittmann, Josef A1 - Kiermayer, Alexander A1 - Seliger, Norbert A1 - Hagl, Rainer A1 - Schmitt-Landsiedel, Doris A1 - Kennel, Ralph T1 - FPGA-based High Dynamic Servo Drive Control with a 200kHz Gallium Nitride Inverter T2 - 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), Warsaw, Poland N2 - Increased productivity in industrial processes can be achieved by dynamic and accurate positioning of servo drives. Therefore, improvement of servo drive dynamics using latest technologies in the key components such as inverter, control system and position measuring device are investigated. Using Gallium Nitride (GaN) or Silicon Carbide (SiC) semiconductors for motor inverters enables energy efficient operation up to pulse width modulation (PWM) frequencies of 500 kHz. This allows motor filters with small component sizes. As a result, high motor efficiency, low torque ripple, high control bandwidth and almost ideal sinusoidal output voltages are achieved. Experiments on a 200 kHz Gallium Nitride inverter with sine wave motor filter show a current control loop bandwidth of 3.2 kHz and almost ideal sinusoidal phase voltages. The achieved bandwidths of the speed and position control loops are 318 Hz and 106 Hz, respectively. KW - Servo drive control KW - Gallium Nitride Inverter KW - electrical drive Y1 - 2017 UR - https://doi.org/10.23919/EPE17ECCEEurope.2017.8098997 ER - TY - CHAP A1 - Versen, Martin A1 - Treichl, R. A1 - Kaltenecker, M. A1 - El Shahawy, H. A1 - Thomas, T. T. T1 - Differentielle LVDS Schnittstelle für modellbasierte Entwürfe mit MathWorks HDL Coder T2 - 15. AALE Konferenz zu Cyberphysischen Produktionssystemen, 2018 KW - LVDS Schnittstellen KW - MathWorks HDL Coder KW - Cyberphysische Produktionssysteme Y1 - 2018 SN - 978-3-8007-4522-7 PB - VDE-Verlag CY - Berlin ER - TY - JOUR A1 - Versen, Martin A1 - Ernst, W. A1 - Gulati, P. T1 - A row hammer pattern analysis of DDR2 SDRAM JF - Microelectronics Reliability N2 - A DDR2 SDRAM test setup implemented on the Griffin III ATE test system from HILEVEL Technologies is used to analyse the row hammer bug. Row hammer pattern experiments are compared to standard retention tests. The analysis confirms that the row hammer effect is caused by a charge excitation process depending on the number of stress activation cycles. The stress has to occur in the local neighborhood of the cells under test. Shallow impurity levels support the responsible charge carrier transport process in the used DDR2 SDRAM technology KW - Microelectronics KW - pattern analysis Y1 - 2018 UR - https://doi.org/10.1016/j.microrel.2017.07.022 VL - 76-77 SP - 64 EP - 67 ER - TY - CHAP A1 - Versen, Martin A1 - Kipfelsberger, F. A1 - Soekmen, F. T1 - Model-Based Reference Design Projects with MathWorks' HDL Workflow Advisor for Custom-Specific Electronics with the Zedboard T2 - ANALOG 2016; 15. ITG/GMM-Symposium, Bremen, Germany N2 - Reference design projects are implemented to the Xilinx Zynq on the Zedboard which is extended by user defined electronic hardware connected through the Zedboard's FMC (FPGA Mezzanine Card) connector. The implementation method with HDL Workflow Advisor includes constraint definitions for modified reference design projects for use with digital input and outputs and Zynq's XADC (Analog-Digital converter) which is characterized and compared to its data sheet. The bandwidth of the Zynq's internal AXI (Advanced eXtensible Interface) bus connected to the Simulink host PC is determined. KW - Zedboard KW - MathWorks' HDL KW - Custom specific electronics Y1 - 2018 ER - TY - JOUR A1 - Versen, Martin A1 - Ernst, W. A1 - Gulati, P. A1 - Singh, G. T1 - Test setup for reliability studies of DDR2 SDRAM JF - Microelectronics Reliability N2 - A DDR2 DRAM test setup is developed and implemented on the Griffin III ATE test system from HILEVEL Technologies. The test system provides a raw platform for performing various mixed signal and digital tests. In order to configure patterns easily in a vector format, a software platform is developed to manage test patterns according to the user's analysis needs. As examples, retention test patterns with disabled self-refresh are applied to 2 Gbit DDR2 SDRAM of two different DRAM vendors. The devices are characterized in respect to their intrinsic leakage and data retention behavior under the influence of stress conditions such as temperature or access algorithm. The tests are automated and test data is logged for an off-line data analysis. Data is recorded before and after solder simulation steps in order to observe a retention time degradation. KW - Microelectronics KW - DRAM retention solder simulation Y1 - 2018 ER - TY - CHAP A1 - Versen, Martin A1 - Hayn, M. T1 - Introduction to Verification and Test Using a 4-Bit Arithmetic Logic Unit Including a Failure Module in a Xilinx XC9572XL CPLD T2 - Proceedings of the 40th ISTFA 2014 KW - Microelectronics KW - Xilinx XC9572XL CPLD Y1 - 2018 ER - TY - JOUR A1 - Wittmann, Josef A1 - Hagl, Rainer T1 - Positionsmessfehler in Servoantrieben JF - Antriebstechnik KW - Elektrische Antriebssysteme KW - Leistungselektronik  KW - Servoantrieb KW - Positionsmessung Y1 - 2016 VL - 2016 IS - 1-2 ER - TY - THES A1 - Rabold, Andreas T1 - Anwendung der Finite Element Methode auf die Trittschallberechnung N2 - Die Forschung und Entwicklung im Bereich der Bauakustik erfolgt bislang schwerpunktmäßig durch aufwändige messtechnische Parameterstudien. Eine wesentliche Reduzierung dieses Aufwands kann dadurch erreicht werden, dass die Bauteil-Parameterstudien nicht mehr ausschließlich durch Messungen erfolgen, sondern auch anhand von geeigneten Berechnungsmodellen durchgeführt werden. Dazu wurde ein umfassendes Berechnungsmodell erarbeitet und anhand von Messergebnissen validiert. Wesentliche Grundlage für die volumenorientierte akustische Simulation ist dabei die p-Version der Methode der Finiten Elemente. Auf Basis der numerischen Berechnungen wurden die Wechselwirkungen der Deckenkomponenten untersucht und optimierte Konstruktionen erarbeitet. Nach deren messtechnischen Überprüfung konnten die Ergebnisse in Form von Konstruktionshilfen für optimierte Aufbauten zusammengestellt werden. KW - Bauakustik KW - Finiten Elemente Methode KW - Trittschallmessung Y1 - 2018 ER - TY - JOUR A1 - Hummel, Sabine A1 - Knorr, Ludwig A1 - Karlinger, Peter A1 - Schemme, Michael T1 - Eine Frage der Haftung JF - Kunststoffe N2 - Dieser Artikel gibt ein Einblick in Hinblick auf die Verarbeitung von endlosverstärkten Faserhalbzeuge, sogenannten Organobleche, in Kombination mit dem Spritzgießverfahren. Ein Schwerpunkt stellt die Verbundhaftung zwischen den beiden Komponenten dar. Neue Ergebnisse sollen die Gestaltungsrichtlinien der angespritzten Funktionselementen für derartige Bauteile führen. Die Verbundfestigkeit hängt von vielen Einflussfaktoren ab. KW - Organoblech KW - endlosverstärkung KW - Spritzguss KW - Faserverbundkunststoffe KW - Kunststoff KW - Verbundhaftung KW - Verbundfestigkeit KW - Rippen Y1 - 2017 IS - 07/2017 PB - Carl Hanser Verlag GmbH & Co. KG CY - München ER - TY - CHAP A1 - Hummel, Sabine A1 - Schemme, Michael A1 - Karlinger, Peter T1 - Haftungsuntersuchungen für Leichtbauanwendungen T2 - Technomer 2017 - 25. Fachtagung über Verarbeitung und Anwendung von Polymeren N2 - Die Verstärkung von Spritzgussteilen mit Faserhalbzeugen gewinnt immer mehr an Bedeutung. Für die Einsatztauglichkeit derartiger Bauteile ist die Verbundhaftung zwischen den angespritzten Strukturen und den Faserhalbzeugen essentiell. Der Vortrag befasst sich mit den äußeren und prozesstechnischen Einflüssen zu Erhöhung der Verbundhaftung auf Faserhalbzeugen. Zudem wird ein Einblick in die Prüf-und Anlagentechnik in diesem Bereich gegeben. KW - Organoblech KW - endlosverstärkte Faserhalbzeuge KW - Hybrithverfahren KW - Faserverbundkunststoffe KW - Faserhybride KW - Kunststoff KW - Verbundfestigkeit KW - Verbundhaftung KW - Spritzguss Y1 - 2017 ER - TY - JOUR A1 - Schittenhelm, Wolfgang A1 - Fischer, K. T1 - SEPP: ein studentisches Projekt der Elektrotechnik JF - Rosenheimer Hochschulhefte 1981 - 2007 (Zeitschrift der Fachhochschule Rosenheim) KW - Elektrotechnik Studienprojekt Y1 - 1998 VL - 1998 ER - TY - JOUR A1 - Schittenhelm, Wolfgang A1 - König, Andreas T1 - Studentische Projektarbeit im Labor Automatisierungstechnik JF - Rosenheimer Hochschulhefte 1981 - 2007 (Zeitschrift der Fachhochschule Rosenheim) KW - Automatisierungstechnik Y1 - 2000 VL - 2000 ER - TY - JOUR A1 - Schittenhelm, Wolfgang A1 - Berndt, T. T1 - OPC - die Schnittstelle des PC für die Automatisierungstechnik JF - Rosenheimer Hochschulhefte 1981 - 2007 (Zeitschrift der Fachhochschule Rosenheim) KW - Automatisierungstechnik Y1 - 2000 VL - 2000 ER - TY - JOUR A1 - Schittenhelm, Wolfgang T1 - WEBROB – Ein Roboter im Internet JF - Rosenheimer Hochschulhefte 1981 - 2007 (Zeitschrift der Fachhochschule Rosenheim) KW - Roboter KW - Internet Y1 - 2001 VL - 2001 ER - TY - JOUR A1 - Piepenbrink, A. A1 - Schittenhelm, Wolfgang T1 - Pneumatiksystem im Selbstbau JF - Zeitschrift fluid KW - Pneumatiksystem Y1 - 2003 IS - Nr. 9 + 10/2003 PB - Verlag moderne Industrie CY - Landsberg am Lech ER - TY - CHAP A1 - Schittenhelm, Wolfgang A1 - Karlinger, Peter A1 - Oberauer, Josef T1 - Energieeffiziente Regelung der Lüftung und Klimatisierung eines Reinraumes für die Kunststoffproduktion T2 - Tagungsband AALE (Angewandte Automatisierungstechnik in Lehre und Entwicklung), 10. Fachkonferenz, 28. Februar – 1. März 2013, Stralsund. KW - energieeffiziente Klimatisierung KW - energieeffiziente Lüftung KW - Kunststoffprodukion Y1 - 2013 SN - 978-3-8356-3364-3 SP - 143 EP - 153 PB - Deutscher Industrieverlag CY - München ER - TY - CHAP A1 - Zentgraf, Peter T1 - ANALYTICAL ATTITUDE DETERMINATION FROM A SPECIFIC RATE PROFILE T2 - 40th ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE, Breckenridge, Colorado, USA N2 - The problem dealt with in this paper is the analytical determination of the attitude of a rigid body which undergoes a given rate profile. Usually the attitude is determined by solving the kinematic differential equation numerically. For long lasting movements the outcome can cost computation time plus encountered losses in accuracy, which can be disturbing especially in optimization problems. This contribution solves the kinematic differential equation for certain rate profiles exactly and compares the results in accuracy and computation time with the standard procedures. KW - Attitude determination KW - kinematic differential equation KW - satellites Y1 - 2017 ER - TY - CHAP A1 - Zentgraf, Peter A1 - Berge, S. A1 - Chasset, C. A1 - Filippi, H. A1 - Gottzein, E. A1 - Gutiérrez-Cañas, I. A1 - Hartrampf, M. A1 - Krauss, P. A. A1 - Kuehl, C. A1 - Lübke- Ossenbeck, B. A1 - Mittnacht, M. A1 - Montenbruck, O. A1 - Müller, C. A1 - Rueda Boldo, P. A1 - Truffi, A. ED - American Astronautical Society, T1 - PREPARING THE GPS-EXPERIMENT FOR THE SMALL GEO MISSION T2 - 33rd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE N2 - This paper deals with the preparation of the Small GEO mission and the accommodation of a GPS receiver as an experiment. The expected benefits of using the GPS receiver for Small GEO are explained. The feasibility of using GPS for position determination is investigated by simulation using a MosaicGNSS receiver, which was stimulated by a Spirent RF signal generator. A procedure, how to evaluate flight data on ground is outlined. Success criteria of the experiment and the minimal size of the downlink stream required and reserved for the receiver TM are presented. KW - GPS KW - geosynchronous mission KW - Small GEO telecommunications satellite Y1 - 2018 ER - TY - GEN A1 - Zentgraf, Peter A1 - Erb, S. ED - Zentgraf, Peter T1 - IMPACT OF ELECTRIC PROPULSION UNCERTAINTY ON ORBIT PREDICTION N2 - This paper analyses the achievable performance of the orbit prediction for a geostationary satellite using clusters of electrical propulsion (EP) thrusters for station-keeping and a star tracker based attitude control system. The challenge in the orbit prediction is that the real electrical propulsion thrust is known with limited accuracy only. In combination with thrust pointing errors, these inaccuracies can accumulate to large orbit position errors during long low thrust burn arcs. The discrepancy between real and predicted satellite position is determined in terms of probability and as a worst case scenario. KW - Orbit prediction KW - Electric propulsion KW - Satellite position Y1 - 2018 ER - TY - CHAP A1 - Zentgraf, Peter A1 - Reggio, D. T1 - MAGNETIC RATE DAMPING FOR SATELLITES IN LEO T2 - 32nd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE N2 - This article deals with the topic of damping the rates of a satellite after separation from the launcher by sensing the rates with magnetometers or gyroscopes and actually damping it with torquerods or thrusters. In literature problems of this kind are treated by linearization which is not adequate here due to the high nonlinearity of the problem caused by the high gyroscopic torque. This paper addresses the observability and controllability of the rate dynamics for symmetric satellite bodies. Furthermore, robust stability of any bodies is investigated by means of the Krasovskii–LaSalle principle which is a variant of Ljapunov’s Second Method. It is found that – apart from one exception - the system is robustly stable for certain conditions depending only on the gain matrix and not depending on the orbit, moments of inertia or initial conditions. The exception is that of the intuitive case of an equator type orbit, in which the satellite rotates around the magnetic field lines, in this case the satellite’s rate cannot be damped. Several design configurations are analysed with respect to their performance and cost: Rate damping with magnetometers or gyroscopes as sensors, and torquerods and thrusters as actuators. The results are evaluated with respect to the time to reach the desired rate, the propellant and the power equivalent battery mass used. The goal is to use the results to allow an AOCS equipment and architecture trade-off at an early project phase. The design of the rate damping control of the SWARM project is presented as an example and demonstrated with simulations. KW - Magnetic Rate Damping KW - Satellites KW - symmetric satellite bodies Y1 - 2018 ER - TY - JOUR A1 - Lazar, Markus A1 - Jarre, F. T1 - Calibration by Optimization Without Using Derivatives JF - Optimization and Engineering N2 - Applications in engineering frequently require the adjustment of certain parameters. While the mathematical laws that determine these parameters often are well understood, due to time limitations in every day industrial life, it is typically not feasible to derive an explicit computational procedure for adjusting the parameters based on some given measurement data. This paper aims at showing that in such situations, direct optimization offers a very simple approach that can be of great help. More precisely, we present a numerical implementation for the local minimization of a smooth function f:Rn→R subject to upper and lower bounds without relying on the knowledge of the derivative of f. In contrast to other direct optimization approaches the algorithm assumes that the function evaluations are fairly cheap and that the rounding errors associated with the function evaluations are small. As an illustration, this algorithm is applied to approximate the solution of a calibration problem arising from an engineering application. The algorithm uses a Quasi-Newton trust region approach adjusting the trust region radius with a line search. The line search is based on a spline function which minimizes a weighted least squares sum of the jumps in its third derivative. The approximate gradients used in the Quasi-Newton approach are computed by central finite differences. A new randomized basis approach is considered to generate finite difference approximations of the gradient which also allow for a curvature correction of the Hessian in addition to the Quasi-Newton update. These concepts are combined with an active set strategy. The implementation is public domain; numerical experiments indicate that the algorithm is well suitable for the calibration problem of measuring instruments that prompted this research. Further preliminary numerical results suggest that an approximate local minimizer of a smooth non-convex function f depending on n≤300 variables can be computed with a number of iterations that grows moderately with n. KW - Engineering KW - Mathematical optimization Y1 - 2016 VL - 2016 IS - 17/4 SP - 833 EP - 860 PB - Springer ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Seliger, Norbert A1 - Schmitt-Landsiedel, Doris T1 - Design and Performance of a 200 kHz GaN Motor Inverter with Sine Wave Filter T2 - PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg N2 - Gallium Nitride (GaN) semiconductor devices are promised to be a good alternative to Silicon (Si) semiconductors in future motor inverters for variable frequency drives (VFDs). They combine low on state resistance and low switching losses with a high blocking voltage capability. Compared to actual inverters based on insulated gate bipolar transistors (IGBTs) the pulse width modulation (PWM) frequency for efficient operation can be increased by a factor of 5 to 10, extending the PWM frequency range up to 500 kHz. This allows the use of motor filters with small component size. As a result, high motor efficiency, low torque ripple, high control bandwidth and nearly ideal sinusoidal output voltages are achieved. Therefore this inverters can be used for high speed spindle motors and dynamic servo drives. This paper focus on the design of a hybrid sine wave filter consisting of an analog and a digital part. The filter is optimized to achieve low power loss and high current control bandwidth. A 3-phase GaN motor inverter operating at 200 kHz PWM frequency at 400 V DC-link voltage verifies the system design. KW - motor inverter Y1 - 2020 ER - TY - CHAP A1 - Höllthaler, Julia A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Bandwidth Improvements of Linear Direct Drives with a 100 kHz PWM-Frequency T2 - 2019 12th International Symposium on Linear Drives for Industry Applications (LDIA), Neuchatel, Switzerland N2 - A calculation method for a robust servo controller design depending on the sampling time and the processing dead time was developed for mechanically stiff drives. With a test stand for high dynamic and high positioning accuracy, the theoretical calculations for the high bandwidth improvements are verified. The test stand includes a voice coil motor and a power electronic with Gallium Nitride (GaN) power semiconductors for switching frequencies of more than 100kHz. KW - bandwidth KW - position control KW - linear servo drives KW - GaN power semiconductors KW - FPGA Y1 - 2019 UR - https://doi.org/10.1109/LDIA.2019.8771013 ER - TY - CHAP A1 - Höllthaler, Julia A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Bandwidth Improvements for Current Control Loops with a 100 kHz PWM Frequency and GaN Power Semiconductors T2 - 2019 58th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE), Hiroshima, Japan N2 - A discrete-time design method for a robust current controller of a servo drive has been developed. It takes the sampling time, the processing dead time and the dynamic behavior of the A/D converter into account. The theoretical calculations are verified using a test stand for high dynamics. The test stand includes a voice coil motor and power electronics with Gallium Nitride (GaN) power semiconductors for switching frequencies of more than 100 kHz. The bandwidth of the current control loop can be improved from typically 1 kHz to 1.5 kHz with insulated-gate bipolar transistor (IGBT) power semiconductors in state-of-the-art motion control systems to 10 kHz and more. KW - bandwidth KW - current control KW - servo drives KW - GaN power semiconductors KW - FPGA Y1 - 2019 UR - https://doi.org/10.23919/SICE.2019.8859873 ER - TY - CHAP A1 - Höllthaler, Julia A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Influence of the PWM Frequency on Dynamic and Position Stability of Servo Drives T2 - 25th International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Virtual Meeting N2 - The dynamic behavior and position stability of servo drives are influenced by many parameters. One major influencing parameter is the pulse width modulation (PWM) frequency. With inverters based on wide bandgap semiconductors, the PWM frequency can be increased. This enables a substantial increase in the current control bandwidth. The paper focuses on the influence of the PWM frequency on the dynamics of control loops and position stability, which are derived from theoretical correlations. The theory is verified using a test bench for high dynamic and position stability. The test bench is equipped with a voice coil motor and power electronic with gallium nitride (GaN) power semiconductors for switching frequencies of 100kHz and over. The achieved position stability, measured with a laser-based comparator at the tool center point, is lower than "+-1nm" with a standard deviation of "0.16nm" at a PWM frequency of "f_PWM=100kHz". KW - bandwidth Y1 - 2020 ER - TY - CHAP A1 - Dechant, Eduard A1 - Seliger, Norbert A1 - Kennel, Ralph T1 - Performance of a GaN Half Bridge Switching Cell with Substrate Integrated Chips T2 - PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg N2 - Wide-bandgap semiconductors such as Silicon Carbide (SiC) or Gallium Nitride (GaN) enable fast switching and high switching frequencies of power electronics. However, this potential can not be exploited due to limitations caused by parasitic elements of packaging and interconnections. This paper shows a possibility to minimize parasitic elements of a half-bridge switching cell with 650 V GaN dies integrated into a printed circuit substrate. A sub-nH commutation loop of 0.5 nH inductance gives superior switching characteristics compared to circuits with packaged dies. Simulation and experimental results of an inverse double pulse test confirm our expectations. This study further reveals additional benefits of the proposed technology in terms of mechanical stability and thermal interfacing to heat sinks compared to circuits with packaged dies. KW - half bridge switching cell Y1 - 2019 ER - TY - CHAP A1 - Dechant, Eduard A1 - Seliger, Norbert A1 - Kennel, Ralph T1 - A study of dielectric breakdown of a half-bridge switching cell with substrate integrated 650V GaN dies T2 - 2019 IEEE International Workshop on Integrated Power Packaging (IWIPP), Toulouse, France N2 - This paper proposes an ultra-low inductance half-bridge switching cell with substrate integrated 650V GaN bare dies. A vertical parallel-plate waveguide structure with 100 μm layer thickness results in a commutation loop inductance of 0.5 nH resulting in a negligible drain-source voltage overshoot in the inductive load standard pulse test. On the other hand reliable circuit operation requires an assessment of the isolation strength of the thin dielectric layer in the main commutation loop, because critical high local electric fields might occur between the pads. Measurements of the dielectric breakdown voltage followed by a statistical failure analysis provide a characteristic life of 14.7 kV and a 10% quantile of 13.5kV in the Weibull fitted data. This characteristic life depends strongly on the ambient temperature and drops to 4.1kV at 125°C. Additionally, ageing tests show an increasing in dielectric breakdown voltage after 500h, 1000h and 2000h at 125°C high-temperature storage due to resin densification processes. KW - half-bridge switching cell Y1 - 2019 UR - https://doi.org/10.1109/IWIPP.2019.8799104 ER - TY - JOUR A1 - Dechant, Eduard A1 - Seliger, Norbert A1 - Kennel, Ralph T1 - Power cycling and temperature endurance test of a GaN switching cell with substrate integrated chips JF - Microelectronics Reliability N2 - We present a reliability study of a half-bridge switching cell with substrate integrated 650 V GaN HEMTs. Power Cycling Testing with a ΔTj of 100 K has revealed thermo-mechanically induced failures of contact vias after more than 220 kcycles. The via failure mode of contact opening is confirmed by reverse-bias pulsed IV-measurements to be primarily triggered by a ΔTj imposed thermal gradient and not by a high Tj. The chip electrical characteristics, however, remained unaffected during Power Cycling. Furthermore, a High Temperature Storage test at 125 °C for 5000 h has shown no changes in the electrical performance of substrate integrated GaN HEMTs. KW - switching cell Y1 - 2019 UR - https://doi.org/10.1016/j.microrel.2019.06.064 VL - 100-101 SP - 113372 ER - TY - CHAP A1 - Seliger, Norbert A1 - Dechant, Eduard A1 - Brendel, Christian A1 - Kennel, Ralph T1 - Reduction of Common Mode EMI noise in microstrip line based commutation paths designed for sub-nH loop inductance T2 - CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems, Berlin - Virtual Meeting N2 - We present a numerical and experimental design study for reducing conducted common mode noise for frequencies below 10MHz generated in switching cells comprising sub-nH commutation loops. Compared to conventional methods of adding external gate resistors our approach does not degrade efficiency. A parallel plate loop design (characterized by a minimum loop inductance and small board area usage) is found suboptimal in terms of conducted EMI compared to a micro-strip line loop geometry. The net ground impedance rather than the net ground inductance is found to mainly contribute to the observed EMI noise. KW - switching cell Y1 - 2020 ER - TY - CHAP A1 - Hilverkus, Johannes A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Structural Mechanical Limitations of Dynamics of Servo Drives T2 - 25th International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Virtual Meeting KW - servo drives Y1 - 2020 SP - 11 EP - 16 ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Seliger, Norbert A1 - Schustek, Maximilian A1 - Lebedev, Alexey A1 - Schmitt-Landsiedel, Doris T1 - A 13.56MHz class e power amplifier for inductively coupled DC supply with 95% power added efficiency (PAE) T2 - 2015 International EURASIP Workshop on RFID Technology (EURFID), Rosenheim N2 - Recent development of GaN power transistors with blocking voltages up to 650V enables novel power electronics applications with outstanding performance in high-frequency operation. This paper demonstrates a class E power amplifier with 13.56MHz switching frequency for inductively coupled DC power supplies. Continuous wave output power up to 200W is achieved with 95% Power Added Efficiency (PAE). KW - Power generation KW - Inductors KW - Power amplifiers KW - Coils KW - Gallium nitride KW - Voltage measurement KW - Logic gates Y1 - 2015 UR - https://doi.org/10.1109/EURFID.2015.7332390 SP - 87 EP - 93 ER - TY - CHAP A1 - Seliger, Norbert A1 - Stubenrauch, Franz A1 - Schmitt-Landsiedel, Doris T1 - A Parametric Layout Study of Radiated Emission from High-Frequency Half-Bridge Switching Cells T2 - CIPS 2016 - 9th International Conference on Integrated Power Electronics Systems, Nürnberg N2 - We present a numerical modeling study of radiated emission from half-bridge switching cells based on the method of moments (MoM). A low loop inductance cell design enables high-speed switching of power semiconductors which is demonstrated on a prototype circuit. The layout is further optimized for low radiated emission by variation of the heat sink placement. This is achieved by the heat sink attached to the phase terminal. The performance of the structure in terms of loop impedance, electric field radiation and sensitivity to cable attachments are numerically studied. Emission peaks arising from loop resonances can be reduced by over 20 dB with damping elements in the switching cell. The improved EMI performance of the proposed structure is attributed to decoupling of the loop current from the heat sink structure. KW - half-bridge switching cells Y1 - 2016 ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Seliger, Norbert A1 - Schmitt-Landsiedel, Doris T1 - A Simplified SPICE Model for Fast Parametric Optimization of High Voltage Power Electronic Circuits in the Megahertz Range T2 - CIPS 2016; 9th International Conference on Integrated Power Electronics Systems, Nürnberg N2 - An accurate SPICE model is proposed in this paper to calculate the power losses of high voltage converter systems. This supports power circuit optimization in the very first design stage. The parasitic package inductances and the nonlinear voltage dependent semiconductor capacitances are taken into account. In addition the high frequency behavior of the power inductor is investigated. A detailed loss breakdown is done to analyze the main sources of power loss and their physical reasons. The simulation results of the converter waveforms and of its efficiency match very well to the experimental results. The prototype boost converter shows a top efficiency greater than 98.3 % at a switching frequency of 1 MHz and an output voltage of 400 V at the maximum output power of 1 kW. KW - SPICE model Y1 - 2016 ER - TY - CHAP A1 - Stubenrauch, Franz A1 - Seliger, Norbert A1 - Schmitt-Landsiedel, Doris T1 - A Low Impedance Drive Circuit to Suppress the Spurious Turn-On in High Speed Wide Band-Gap Semiconductor Halfbridges T2 - PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg N2 - A gate drive circuit for gallium nitride (GaN) enhancement mode (e-mode) transistors is presented, which avoids parasitic turn-on of the power devices in the halfbridge configuration. New e-mode GaN devices turn on at very low threshold voltages between 1V and 2V. This makes the transistors highly sensitive to spurious turn-on and thus reduces the required safety margin of the gate drive signals. To avoid this parasitic turn-on, a very low gate loop impedance is required. This prevents the halfbridge against bridge shorts during the switching events and guarantees stable gate drive control with increased switching efficiency. The new gate drive circuit is developed in a SPICE simulation environment and verified in a prototype setup by a double pulse test. The simulation matches very well with the experimental result and demonstrates the suppression of parasitic semiconductor turn-on with the proposed gate drive. Furthermore the dissipated switching energy is reduced, compared to a standard gate drive circuit. High DCDC converter efficiency of 98.67% at 1kW output power is achieved by using the driving circuit for a buck converter prototype with 200kHz switching frequency. KW - drive circuit Y1 - 2020 ER - TY - CHAP A1 - Seliger, Norbert A1 - Stubenrauch, Franz A1 - Brendel, Christian A1 - Schmitt-Landsiedel, Doris T1 - Impact of Circuit Carrier Technologies on MHz-switching of GaN Half-Bridge Circuits T2 - PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy, Nürnberg N2 - Increasing the switching frequency has been one of the most beneficial advancements in modern power electronics. This trend has been enabled by progress in power semiconductors resulting in increased power densities, efficiencies and control dynamics. The aim of this study is to analyze the influence of three different circuit carrier technologies on switching power loss of 650 V hardswitching GaN devices. Limitations and solutions for half-bridge circuits operating at MHz-switching are investigated by modeling and experiments on a prototype. KW - GaN KW - Half-Bridge KW - MHz-switching KW - Substrate carrier technology Y1 - 2020 SP - 1407 EP - 1415 ER - TY - CHAP A1 - Versen, Martin A1 - Kipfelsberger, Stefan A1 - Bernhardt, Andreas T1 - Einführung in die Aufbau- und Verbindungstechnik durch eine interaktive und praxisnahe Qualifizierung in der Leiterplattentechnik T2 - Tagungsband 2. Symposium Elektronik und Systemintegration ESI 2020: "Intelligente Systeme und ihre Komponenten: Forschung und industrielle Anwendung" N2 - Für eine Einführung in die fertigungstechnischen Grundlagen der Aufbau- und Verbindungstechnik sind im Wahlfach „Leiterplattentechnik Praktikum“ an der Technischen Hochschule (TH) Rosenheim Inhalte der Prozesstechnik und des Leiterplattendesigns miteinander kombiniert. Zu Beginn der Veranstaltung zeichnen die Praktikumsteilnehmer ein Layout für eine Leiterbahn-Teststruktur, welche anschließend im Haus gefertigt wird. Nach der Fertigung folgt eine elektrische und optische Charakterisierung zur Kontrolle der Prozessqualität. Die praxisnahe Erstellung eines einlagigen Layouts für eine LED-Taschenlampe auf Basis eines vorgegebenen Schaltplans und innerhalb einer begrenzten Platinenfläche sowie dessen Fertigung befähigen die Kursteilnehmer später, eigene Layouts für elektronische Schaltungen selbstständig zu entwickeln. Die anspruchsvolle, teilautomatische Bestückung einer zweilagigen, vorgegebenen SMT(Surface Mount Technology)-Leiterplatte, die ein FM-Radio mit Capacitive Touch-Steuerung bildet, rundet die erfolgreiche Qualifizierung in der Leiterplattentechnik ab. KW - Leiterplattentechnik Y1 - 2020 UR - https://opus4.kobv.de/opus4-haw-landshut/frontdoor/index/index/docId/212 SN - 978-3-9818439-4-1 SP - 54 EP - 62 CY - Landshut ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Holst, Gerhard A1 - Versen, Martin T1 - Automatische Erkennung von Kunststoffen durch bildgebende Fluoreszenzabklingzeitmessung T2 - Tagungsband: AALE 2020 - Automatisierung und Mensch-Technik-Interaktion 17. Fachkonferenz KW - Erkennung von Kunststoffen KW - Fluoreszenzabklingzeitmessung Y1 - 2020 SN - 978-3-8007-5180-8 SP - 223 EP - 231 PB - VDE Verlag Berlin ER - TY - CHAP A1 - Heitauer, Mathias A1 - Versen, Martin T1 - Co-Simulation eines zweistufigen Operationsverstärkers mit MATLAB/Simulink und Cadence ADE T2 - Tagungsband: AALE 2020 - Automatisierung und Mensch-Technik-Interaktion 17. Fachkonferenz N2 - Ein zweistufiger Operationsverstärker wird parallel in einer 180nm CMOS Technologie in der Entwicklungsumgebung von Cadence ADE und in MATLAB/Simulink in einem modellbasierten Ansatz entworfen und simuliert. Für den Entwurf in MATLAB/Simulink wird das Kleinsignalersatzschaltbild der physikalischen Schaltung verwendet. Mit Hilfe der Co-Simulation zwischen Cadence und MATLAB/Simulink wird das Verhalten simuliert und ausgewertet. Die Ergebnisse aus beiden Modellen stimmen überein, wodurch festgestellt werden kann, dass die Co-Simulation erfolgreich war. KW - Co-Simulation KW - Operationsverstärker Y1 - 2020 SN - 978-3-8007-5180-8 SP - 287 EP - 291 PB - VDE Verlag Berlin CY - Berlin ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Holst, G. A1 - Versen, Martin T1 - A novel approach to optically distinguish plastics based on fluorescence lifetime measurements T2 - 2020 IEEE Sensors Applications Symposium (SAS), Kuala Lumpur, Malaysia KW - fluorescence Y1 - 2020 SP - 1 EP - 6 ER - TY - JOUR A1 - Obermeier, Frederik A1 - Schumacher, Mara A1 - Barth, Simon A1 - Karlinger, Peter A1 - Schemme, Michael A1 - Altstädt, Volker T1 - Verstärkung von Polypropylen mit Holzfasern durch Direkt-Compoundierung JF - Zeitschrift Kunststofftechnik N2 - Ergänzend zum bisherigen Stand der Wissenschaft und Technik wurden in dieser Veröffentlichung Fichtefasern aus einem thermo-mechanischen Aufschlussprozess über einen Spritzgusscompounder mit Polypropylen und Haftvermittler direkt compoundiert. Bei der direkten einstufigen Verarbeitung wurde ein steigender Holzfaseranteil bis 30 Gew.-% untersucht. Die Charakterisierung der Materialkombinationen erfolgte durch Zugversuche, Melt-Flow-Rate Messungen, Dichtebestimmung, Mikroskopie und Kerbschlagbiegeversuche. Bei steigendem Holzfaseranteil wird eine Steigerung der Zugeigenschaften, der Viskosität und der Dichte festgestellt. Die Kerbschlagzähigkeit bleibt bei steigendem Holzfaseranteil im Rahmen der Standardabweichung konstant, ist jedoch im Vergleich zum unveränderten Grundpolymer geringer. KW - Direkt-Compoundierung KW - Spritzgusscompounder KW - Holz KW - Holzfaser KW - Polypropylen Y1 - 2021 VL - 2021 IS - 2 SP - 87 EP - 111 PB - Carl Hanser Verlag CY - München ER - TY - JOUR A1 - Wohlschläger, Maximilian A1 - Versen, Martin T1 - Detection of plastics in water based on their fluorescence behavior JF - Journal of Sensors and Sensor Systems N2 - Plastic waste is one of the biggest growing factors contributing to environmental pollution. So far there has been no established method to detect and identify plastics in environmental matrices. Thus, a method based on their characteristic fluorescence behavior is used to investigate whether plastics can be detected and identified in tap water under laboratory conditions. The experiments show that the identification of plastics as a function of water depth is possible. As the identification becomes more difficult with higher water depths, investigations with a highly sensitive imaging method were carried out to obtain an areal integration of the fluorescent light and thus better results. KW - identification of plastics Y1 - 2020 UR - https://doi.org/10.5194/jsss-9-337-2020 VL - 9 IS - 2 SP - 337 EP - 343 ER - TY - JOUR A1 - Versen, Martin A1 - Ernst, W. T1 - Row hammer avoidance analysis of DDR3 SDRAM JF - Microelectronics Reliability N2 - A DDR3 SDRAM test setup implemented on the Griffin III test system from HILEVEL Technologies is used to analyse the row hammer bug. Row hammer pattern experiments are compared to standard retention tests for different manufacturing technologies. The row hammer effect is depending on the number of stress activation cycles. The analysis is extended to an avoidance scheme with refreshes similar to the Target Row Refresh scheme for the DDR4 SDRAM technology. KW - DDR4 SDRAM technology Y1 - 2020 UR - https://doi.org/10.1016/j.microrel.2020.113744 SP - 113744 ER - TY - CHAP A1 - Leiter, Nina A1 - Wohlschläger, Maximilian A1 - Auer, Veronika A1 - Versen, Martin A1 - Laforsch, Christian T1 - A Novel Approach to Identify Wood Species Optically using Fluorescence Lifetime Imaging Microscopy T2 - SMSI 2021 Conference – Sensor and Measurement Science International N2 - This contribution presents the results obtained with fluorescence lifetime imaging microscopy (FLIM)within the optical identification and differentiation of the four wood species walnut, beech, spruce, and maple. The experimental setup as well as the evaluation algorithm, with which the experiments were carried out, is explained briefly. KW - fluorescence lifetime KW - wood species identification KW - fluorescence KW - wood KW - FLIM Y1 - 2021 UR - https://doi.org/10.5162/SMSI2021/B10.2 SP - 169 EP - 170 ER - TY - JOUR A1 - Obermeier, Frederik A1 - Karlinger, Peter A1 - Schemme, Michael A1 - Altstädt, Volker T1 - Thermoplastic Hybrid Composites with Wood Fibers: Bond Strength of Back-Injected Structures JF - Materials N2 - Due to their lightweight potential and good eco-balance, thermoplastic hybrid composites with natural fiber reinforcement have long been used in the automotive industry. A good alternative to natural fibers is wood fibers, which have similar properties but are also a single-material solution using domestic raw materials. However, there has been hardly any research into wood fibers in thermoplastic back-injected hybrid composites. This article compares the bond strength of an injection molded rib from polypropylene (PP) and wood fibers to different non-wovens. The non-wovens consisted of wood fibers (spruce) or alternatively natural fibers (kenaf, hemp), both with a polypropylene matrix. Pull-off and instrumented puncture impact tests show that, given similar parameters, the natural and wood-fiber-hybrid composites exhibit very similar trends in bond strength. Further tests using viscosity measurements, microscopy, and computed tomography confirm the results. Wood-fiber-reinforced thermoplastic hybrid composites can thus compete with the natural fiber composites in terms of their mechanical behavior and therefore present a good alternative in technical semi-structural applications. KW - biocomposites KW - wood fibers KW - polypropylene KW - back-injection molding KW - bond strength Y1 - 2022 UR - https://doi.org/10.3390/ma15072473 VL - 15 IS - 7 SP - 2473 ER - TY - CHAP A1 - Seliger, Norbert T1 - Design of a Half-Bridge Converter for Self-Adapting Capacitive Wireless Power Transfer T2 - IEEE 2021 CENCON conference N2 - We present the design of a half-bridge converter for a capacitively coupled wireless power transfer system. The load signal acts as a positive feedback signal for a self-oscillation circuit which generates the driving gate signals for the converter. Our research reveals a robust wireless operation for a large range of load resistors and coupling capacitors. Based on an electric network analysis we obtain design criteria for self-oscillation and for the power transfer. The theoretical predictions are confirmed by circuit simulation and measurement results on a converter prototype with GaN-HEMTs. We report on a transfer efficiency of 92% for a power greater than 50W at a switching frequency of 300kHz and 200V DC link voltage. KW - GaN half-bridge KW - Wireless power transfer KW - Capacitive coupling KW - Self-adaptive Y1 - 2021 PB - IEEE ER - TY - CHAP A1 - Seliger, Norbert T1 - A Free Oscillating Half-Bridge Converter for Capacitively Coupled Wireless Power Transfer T2 - IEEE 6th International Forum on Research and Technology for Society and Industry (RTSI) N2 - In this research we present a short distance capacitively coupled wireless power transfer (WPT) system with a self-oscillating half-bridge converter, which uses a positive feedback signal from the WPT system. By this novel implementation we find additional features of the system compared to linear amplifier based systems. With the DC bias voltage supplying the power converter, we achieve a controllable output power, tunable self-oscillation frequency and extension of the self-oscillation range. We present the analytical expressions for the converter waveforms. The theoretical analysis is confirmed by circuit simulation results and measurements on a prototype featuring a half-bridge converter with Gallium-Nitide (GaN) HEMTs. We achieve a system efficiency of 93% at a load power of 83W and 150kHz switching frequency. KW - wireless power transfer KW - capacitive coupling KW - GaN half-bridge KW - self-oscillation Y1 - 2021 PB - IEEE ER - TY - THES A1 - Uhl, Cornelius T1 - Untersuchungen zur Eignung von Pferdemist als Biomassebrennstoff N2 - Pferdemist stellt eine große ungenutzte Ressource zur Erzeugung regenerativer Energie dar. Jedoch ist eine thermische Umsetzung durch hohe Störstoffanteile sowie den physikalischen und mechanischen Eigenschaften des Rohmists sehr anspruchsvoll. Die vorliegende Arbeit bildet eine systematische empirische Datengrundlage für die Beurteilung von Pferdemist als Biomassebrennstoff und zeigt Möglichkeiten zur positiven Beeinflussung der Brennstoffeigenschaften auf. KW - Pferdemist KW - Biomassebrennstoff KW - Brennstoffeigenschaften KW - Störstoffanteile Y1 - 2018 UR - http://mediatum.ub.tum.de/?id=1444447 ER - TY - THES A1 - Eben, Johannes T1 - Identifikation und Reduzierung realer Schwankungen durch praxistaugliche Prozessführungsmethoden beim Spritzgießen N2 - Eine stetig gleichbleibende hohe Qualität zu fertigen, ist erklärtes Ziel des Spritzgießgewer-bes. Aus technischen oder wirtschaftlichen Gründen ist es jedoch nicht möglich, für konstan-te Produktionsrahmenbedingungen zu sorgen. Die effizienteste Methode ist , die Schwan-kungen über die Wahl der richtigen Prozessführungsmethode auszugleichen. Im ersten Teil der Arbeit konnte herausgefunden werden, welche praxisrelevanten Störgrö-ßen einen Einfluss auf den Spritzgießprozess haben und wie sie sich auswirken. Bei den Materialparametern sind Änderungen der Viskosität (15 %) und der Einfriertemperatur des Materials (4 °C) am Einzug festzustellen. Zusätzlich veränderte sich das Messverhalten der Drucksensoren, wodurch ein Drift von 5 bar entstand. Störgrößenbedingt änderten sich auch die Prozesstemperaturen um 1 °C. Im zweiten Teil der Arbeit werden diverse, während der Arbeit entwickelte, Prozessfüh-rungsmethoden miteinander verglichen. Aufgabe war es, die im ersten Teil gefundenen rea-len störgrößenbedingten Einflüsse zu kompensieren. Es stellte sich heraus, dass sich ledig-lich die materialbedingten Schwankungen nicht ausgleichen lassen. Zumindest können de-ren Auswirkungen durch eine Regelung der werkstoffnahen Parameter abschwächt werden. KW - Spritzgießen KW - Spritzgießmaschine KW - Prozessfähigkeit KW - Qualitätskontrolle KW - Reproduzierbarkeit KW - Qualität KW - Regelung KW - Steuerung Y1 - 2015 UR - https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa-156619 ER - TY - CHAP A1 - Obermeier, Frederik A1 - Karlinger, Peter A1 - Schemme, Michael A1 - Altstädt, Volker T1 - Verbundhaftung von thermoplastischen Hybridverbunden mit Natur-und Holzfaserverstärkung T2 - Technomer 2021 N2 - Leichtbau, ressourcenschonende Herstellungstechnologien und die Verwendung nachwachsender Rohstoffe sind zentrale Themen des 21. Jahrhunderts. Thermoplastische Hybridverbunde mit Naturfaserverstärkung sind seit langem Stand der Technik und werden vor allem in der Automobilindustrie verwendet. Holzfasern sind in diesem Bereich jedoch noch nicht umfassend untersucht. Der Vortrag befasst sich mit dem Potenzial von Holzfasern (Fichte) für thermoplastische Hybridverbunde im Vergleich zu Naturfasern (Kenaf, Hanf). Dabei werden mechanische Untersuchungen (Kopf-Zug-Versuch und instrumentierter Durchstoßversuch) von zwei hybriden Bauteilen gezeigt. Die Verbundhaftung wird bei unterschiedlichen Schädigungsmechanismen in Abhängigkeit ausgewählter Parameter dargestellt. Die relevanten Effekte werden ergänzend durch Mikroskopie und Computertomographie beschrieben. Es zeigt sich, dass thermoplastische Hybridverbunde mit Holzfasern mit dem Benchmark aus Naturfasern mechanisch konkurrieren können. Zudem zeigen Holzfasern andere Vorteile wie geringe Rohstoffrisiken. KW - Thermoplaste KW - Holzfasern KW - Naturfasern KW - Hybridverbunde KW - Verbundhaftung Y1 - 2021 SN - 978-3-939382-15-7 SP - 1 EP - 12 PB - Technische Universität Chemnitz CY - Chemnitz ER - TY - CHAP A1 - Wiedl, Sebastian A1 - Karlinger, Peter A1 - Schemme, Michael A1 - List, Manuela T1 - Vergleich von unterschiedlichen Aufschmelzverfahren und die daraus resultierenden Eigenschaften für WPC-Spritzgussteile T2 - Technomer 2021 N2 - Leichtbau und ressourcenschonende Herstellungstechnologien sind zentrale Themen des 21. Jahrhunderts. Im Zuge dessen werden vermehrt Naturprodukte in der Kunststoffverarbeitung eingesetzt. Eine Sparte dabei bilden Holz-Polymer Werkstoffe (WPC), welche seit 2014 eine Verdoppelung in der Produktionsmenge erfahren haben. Dabei werden meist Holzpartikel statt Fasern als Füll- und Verstärkungsstoff eingesetzt. Der Vortrag befasst sich mit dem Vergleich von verschiedenen Aufbereitungsmöglichkeiten von WPCs mit Holzfaserverstärkung hinsichtlich Mechanik und thermischer Schädigung des temperaturempfindlichen Holzes. Teil der Untersuchung ist die einstufige Verarbeitung mittels eines Injection-Moulding-Compounders sowie die zweistufige Verarbeitung mittels Compounder und Heiz-Kühl-Mischer mit anschließendem Urformen an der Spritzgussmaschine. KW - Holzfasern KW - Compoundierverfahren KW - Spritzguss KW - Thermische Beanspruchung KW - Mechanik Y1 - 2021 SN - 978-3-939382-15-7 SP - 1 EP - 13 PB - Technische Universität Chemnitz CY - Chemnitz ER - TY - CHAP A1 - Weidner, Karl A1 - Kaspar, Michael A1 - Seliger, Norbert T1 - Innovative Leistungsmodule T2 - Produktion von Leiterplatten und Systemen (PLUS) KW - Leistungsmodule Y1 - 2011 SP - 1408 EP - 1412 ER - TY - CHAP A1 - Weidner, Karl A1 - Kaspar, Michael A1 - Seliger, Norbert T1 - Planar Interconnect Technology for Power Module System Integration T2 - 7th International Conference on Integrated Power Electronics Systems (CIPS) N2 - The recent developments in power semiconductor devices and increasing demands on reliability as well as on operation performance require innovative package technologies. Such a novel package technique based on a Planar Interconnect Technology (SiPLIT®) for power modules is introduced in this work. This package features thick Cu interconnects on a high-reliable insulating film for power semiconductor chip top contacts. Due to the conductor structure and contact technology, on-resistance and stray inductances are very low compared to state-of-the-art Al wire bonds. In addition, large area contacting improves the power cycling capability and surge current robustness significantly. These remark-able properties have been verified on several prototype modules where the manufacturing process has also been optimised in terms of cost-effectiveness, system integration and maturity for series production. KW - planar interconnect technology KW - power module system integration KW - power semiconductor devices KW - reliability KW - innovative package KW - SiPLIT KW - power cycling capability Y1 - 2012 SP - 13.1 PB - VDE-VERLAG GMBH ER - TY - CHAP A1 - Seliger, Norbert T1 - Zuverlässigkeit mechatronischer Systeme: Bewertung der Lebensdauer der Leistungselektronik T2 - Internationales Forum Mechatronik KW - Lebensdauer Kondensatoren KW - Zuverlässigkeit KW - PFC KW - Reliability Y1 - 2012 ER - TY - CHAP A1 - Seliger, Norbert T1 - Probabilistic model based analysis of electrolytic capacitor ageing and failures in a single-phase power factor correction circuit T2 - 8th International Conference on Integrated Power Electronics Systems (CIPS) N2 - Wear-out failures of electrolytic capacitors in single phase power factor correction circuits are investigated in this study. A probabilistic model based approach for temperature driven capacitor degradation is chosen to analyse the probability of failure of the output capacitor bank. Different design strategies are proposed and evaluated in terms of reliability. Parametric variation of capacitor bank designs provides influential effects on system volume, cost and reliability which is modeled for a sample size of 1000 power supply units. KW - wear-out failure electrolytic capacitor KW - active PFC Y1 - 2014 PB - VDE-VERLAG GMBH ER -