@incollection{KuechlerHammer, author = {K{\"u}chler, Andreas and Hammer, F.}, title = {Insulating Systems for HVDC Power Apparatus}, series = {3rd Int. Conf. on Properties}, booktitle = {3rd Int. Conf. on Properties}, address = {Graz, {\"O}sterreich}, language = {en} } @incollection{KuechlerHammer, author = {K{\"u}chler, Andreas and Hammer, F.}, title = {Application of Dielectric Materials}, address = {Tokyo}, pages = {965 -- 968}, language = {en} } @article{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Gutschwager, B. and Baltruschat, C. and Hollandt, J{\"o}rg and Kochems, D. and K{\"u}chel, C.}, title = {The Spectral Photon Flux of the Radiometric Calibration Spectral Source for the NIRSpec Instrument of the James Webb Space Telescope}, series = {Metrologia}, journal = {Metrologia}, number = {46}, pages = {207 -- 212}, language = {en} } @article{HartmannThomasHilletal., author = {Hartmann, J{\"u}rgen and Thomas, R. and Hill, K.D. and Steele, A.G. and Ma, C.K.}, title = {Bilateral comparison of the NRC and PTB local realizations of the ITS-90 between the silver point and 1700 °C using vacuum tungsten strip lamps as transfer standards}, series = {Metrologia}, volume = {43}, journal = {Metrologia}, number = {03003}, language = {en} } @article{HartmannFriedrichTaubertetal., author = {Hartmann, J{\"u}rgen and Friedrich, R. and Taubert, Dieter Richard and Hollandt, J{\"o}rg}, title = {Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB}, series = {Metrologia}, journal = {Metrologia}, number = {40}, pages = {35 -- 38}, language = {en} } @article{HartmannAnhaltZelenjuketal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Zelenjuk, A. and Taubert, Dieter Richard}, title = {New PTB Set-up for the absolute calibration of the spectral responsivity of radiation thermometers}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {30}, pages = {192 -- 202}, language = {en} } @article{HartmannMaGibson, author = {Hartmann, J{\"u}rgen and Ma, C.K. and Gibson, C.}, title = {Decreasing dependence of the calibration of the tungsten strip lamp on the temperature of the lamp base with increasing filament length}, series = {Metrologia}, journal = {Metrologia}, number = {42}, pages = {383 -- 388}, language = {en} } @article{HartmannAnhaltWangetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Wang, Y. and Yamada, Y.}, title = {Large and small aperture Fixed-point cells of Cu, Pt-C, and Re-C}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {29}, pages = {969 -- 983}, language = {en} } @article{HartmannWerner, author = {Hartmann, J{\"u}rgen and Werner, L.}, title = {Radiation thermometry towards the triple point of water?}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {29}, pages = {1052 -- 1065}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Correct consideration of the index of refraction using blackbody radiation}, series = {Optics Express}, volume = {14}, journal = {Optics Express}, number = {18}, pages = {8121 -- 8126}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Advanced comparator method for measuring ultra small aperture areas}, series = {Meas.Sci.Techn.}, journal = {Meas.Sci.Techn.}, number = {12}, pages = {1678 -- 1682}, language = {en} } @inproceedings{WirthReumannKuechleretal., author = {Wirth, Isabell and Reumann, Andreas and K{\"u}chler, Andreas and Schnitzler, Tim and Langens, Achim and Berger, Frank and Zink, Markus H.}, title = {Steady-state and Transient Electrical Potential Distribution in HVDC Bushings Measured under Different Thermal Conditions}, series = {19th International Symposium on High Voltage Engineering}, booktitle = {19th International Symposium on High Voltage Engineering}, address = {Pilsen, Czech Republic}, language = {en} } @book{Zink, author = {Zink, Markus H.}, title = {Zustandsbewertung betriebsgealterter Hochspannungstransformatordurchf{\"u}hrungen mit {\"O}l-Papier-Dielektrikum mittels dielektrischer Diagnose}, publisher = {Universit{\"a}tsverlag Ilmenau}, address = {Ilmenau}, language = {de} } @article{HartmannLoweAnhalt, author = {Hartmann, J{\"u}rgen and Lowe, D. and Anhalt, Klaus}, title = {Construction and validation of a platinum-carbon eutectic fixed-point}, series = {Metrologia}, journal = {Metrologia}, number = {45}, pages = {325 -- 329}, language = {en} } @article{ZinkKuechlerBerger, author = {Zink, Markus H. and K{\"u}chler, Andreas and Berger, Frank}, title = {Kompensation des Temperatureinflusses auf dielektrische Messungen im Zeitbereich zur Beschreibung von Isolierwerkstoffen}, series = {ETG-Fachtagung „Grenzfl{\"a}chen in elektrischen Isoliersystemen"}, journal = {ETG-Fachtagung „Grenzfl{\"a}chen in elektrischen Isoliersystemen"}, address = {Dresden}, language = {de} } @book{Zink, author = {Zink, Markus H.}, title = {Kerntechnik}, publisher = {Vogel Fachbuchverlag}, language = {de} } @book{Zink, author = {Zink, Markus H.}, title = {Kerntechnik}, publisher = {Vogel Fachbuchverlag}, language = {de} } @inproceedings{WirthSturmKuechleretal., author = {Wirth, Isabell and Sturm, Sebastian and K{\"u}chler, Andreas and Zink, Markus H. and Berger, Frank and Schnitzler, Tim}, title = {Ber{\"u}cksichtigung von Leitungs- und Polarisationsmechanismen in transienten FEM-Simulationen von HG{\"U}-Isoliersystemen}, series = {VDE-Hochspannungstechnik 2018, Berlin}, booktitle = {VDE-Hochspannungstechnik 2018, Berlin}, abstract = {The calculation of electrical field distributions in insulation systems for high voltage direct current (HVDC) transmission using the finite element method (FEM) usually only considers the dielectric properties in the form of permittivities and conductivities. Due to not sufficiently well simulated transient processes, state of the art is considering the polarization processes by equivalent network models. The application and implementation of polarization mechanisms in a FEM soft- ware closes this gap and allows calculating the electric field distribution more precisely. An implementation of additional differential equations, according to the RC-network model, describing the field dependent polarization mechanisms, are complementing the displacement and conduction current. Material equations and their parameters are determined by measuring the polarization and depolarization currents (PDC). These equations are necessary for both the RC-network models and the differential equations for the FEM. They can be adapted to the actual temperatures in the insulation system. Hence, the necessarily multidimensional electric field calculations of complex insulation systems with stationary or transient temperature-gradients are possible. The described calculation method is verified by reactionless fieldmill voltmeter measurements of transient voltage profiles at the grading foils of modified high voltage DC-bushings. A better accuracy is achieved for the simulation of transient and stationary potential distributions.}, language = {de} } @inproceedings{KochHohlochWirthetal., author = {Koch, Myriam and Hohloch, Jens and Wirth, Isabell and Sturm, Sebastian and Zink, Markus H. and K{\"u}chler, Andreas}, title = {Experimental and simulative analysis of the thermal behavior of high voltage cable joints}, series = {VDE-Hochspannungstechnik 2018, Berlin}, booktitle = {VDE-Hochspannungstechnik 2018, Berlin}, abstract = {Nowadays, cable systems are often preferred when deciding on the type of new transmission lines even in the high and extra high voltage range. One of the main reasons is the better public acceptance. In addition, the power to be transmitted in the grid is increasing leading to increased ohmic losses and thus, to higher thermal stress on the materials. The investigations in this contribution focus on cable joints, which represent important and decisive components of cable systems. In order to optimize the design and to ensure reliable operation over the entire service life, the temperature profile within these components is of special interest. For their detailed investigation, a test circuit was set up consisting of a cable section and sections with build-up stages of a cable joint. A large number of measuring points were defined also at points where no measurement is possible in normal operation. With a thermographic camera the surface temperature distributions were observed. With the laboratory setup temperature profiles under various load conditions were recorded. A detailed FEM model was built and verified with help of these measurements. The model permits the investigation of specific questions of cable systems such as the comparison of temperature loads resulting from normal operating conditions and of test procedures according to the relevant standards. Besides others the effect of stressing the insulation and sealing system by heating the inner conductor vs. heating from outside by surrounding water is discussed.}, language = {en} } @inproceedings{WirthReumannKuechleretal., author = {Wirth, Isabell and Reumann, Andreas and K{\"u}chler, Andreas and Zink, Markus H. and Berger, Frank and Langens, Achim and Schnitzler, Tim and Heil, B.}, title = {Measurement and simulation of transient field stresses and impacts on advanced insulation design and new test procedures for HVDC components}, series = {Cigre-Konferenz, Paris}, booktitle = {Cigre-Konferenz, Paris}, language = {en} } @article{ZinkKlipfelBergeretal., author = {Zink, Markus H. and Klipfel, V. and Berger, Frank and K{\"u}chler, Andreas and Voll, S.}, title = {Der Einfluss von Temperatur und Streukapazit{\"a}t auf diagnostische Kapazit{\"a}ts- und Verlustfaktormessungen von 400 kV-Hochspannungstransformatordurchf{\"u}hrungen}, series = {ETG-Fachtagung „Diagnostik elektrischer Betriebsmittel"}, journal = {ETG-Fachtagung „Diagnostik elektrischer Betriebsmittel"}, address = {Fulda}, language = {de} } @inproceedings{WirthHessdoerferKuechleretal., author = {Wirth, Isabell and Heßd{\"o}rfer, Nadja and K{\"u}chler, Andreas and Zink, Markus H. and Langens, Achim and Berger, Frank}, title = {Measurements and calculations of critical thermal and electrical stress conditions for HVDC bushings}, series = {20th International Symposium on High Voltage Engineering, Buenos Aires, 2017}, booktitle = {20th International Symposium on High Voltage Engineering, Buenos Aires, 2017}, language = {en} } @inproceedings{HopfWirthSturmetal., author = {Hopf, K. and Wirth, Isabell and Sturm, Sebastian and K{\"u}chler, Andreas and Zink, Markus H. and Langens, Achim}, title = {Temperature-dependent and anisotropic electrical conductivity of resin-impregnated paper}, series = {Power and Energy Student Summit, N{\"u}rnberg, 2017}, booktitle = {Power and Energy Student Summit, N{\"u}rnberg, 2017}, language = {en} } @inproceedings{WirthKuechlerZinketal., author = {Wirth, Isabell and K{\"u}chler, Andreas and Zink, Markus H. and Berger, Frank and Langens, Achim}, title = {Elektrische Feldverteilung und Polarisationsstr{\"o}me in HG{\"U} Durchf{\"u}hrungen}, series = {Fachtagung Polymere Isolierstoffe und ihre Grenzfl{\"a}chen, Zittau, 2018}, booktitle = {Fachtagung Polymere Isolierstoffe und ihre Grenzfl{\"a}chen, Zittau, 2018}, language = {de} } @article{WehnertOchsSchmittetal., author = {Wehnert, Kira-Kristin and Ochs, Dennis and Schmitt, Jan and Hartmann, J{\"u}rgen and Schiffler, Andreas}, title = {Reducing Lifecycle Costs due to Profile Scanning of the Powder Bed in Metal Printing}, series = {Procedia CIRP 98}, volume = {98}, journal = {Procedia CIRP 98}, publisher = {Elsevir}, pages = {684 -- 689}, abstract = {First time right is one major goal in powder based 3D metal printing. Reaching this goal is driven by reducing life cycle costs for quality measures, to minimize scrap rate and to increase productivity under optimal resource efficiency. Therefore, monitoring the state of the powder bed for each printed layer is state of the art in selective laser melting. In the most modern approaches the quality monitoring is done by computer vision systems working with an interference on trained neural networks with images taken after exposure and after recoating. There are two drawbacks of this monitoring method: First, the sensor signals - the image of the powder bed - give no direct height information. Second, the application of this method needs to be trained and labeled with reference images for several cases. The novel approach presented in this paper uses a laser line scanner attached to the recoating machine. With this new concept, a direct threshold measure can be applied during the recoating process to detect deviations in height level without prior knowledge. The evaluation can be done online during recoating and feedback to the controller to monitor each individual layer. Hence, in case of deviations the location in the printing plane is an inherent measurement and will be used to decide which severity of error is reported. The signal is used to control the process, either by starting the recoating process again or stopping the printing process. With this approach, the sources of error for each layer can be evaluated with deep information to evaluate the cause of the error. This allows a reduction of failure in the future, which saves material costs, reduces running time of the machine life cycle phase in serial production and results in less rework for manufactured parts. Also a shorter throughput time per print job results, which means that the employee can spent more time to other print jobs and making efficient use of the employee's work force. In summary, this novel approach will not only reduce material costs but also operating costs and thus optimize the entire life cycle cost structure. The paper presents a first feasibility and application of the described approach for test workpieces in comparison to conventional monitoring systems on an EOS M290 machine.}, language = {en} } @article{HayBeaumontLambengetal., author = {Hay, Bruno and Beaumont, Oliver and Lambeng, Nora and Cataldi, Michel and Lorrette, Christophe and Knopp, Kevin and Hartmann, J{\"u}rgen and Beckstein, Fabia and Stobitzer, Dorothea and Milošević, Nenad and Stepanic, Nenad and Wu, Jiyu and Mildeova, Petra}, title = {Inter‑laboratory Comparison on Thermal Diffusivity Measurements by the Laser Flash Method at Ultra‑high Temperature}, series = {International Journal of Thermophysics}, volume = {2023}, journal = {International Journal of Thermophysics}, pages = {44 -- 48}, abstract = {thermal diffusivity measurements by the laser flash method in the temperature range from 23 °C to 3000 °C. The main objective was to assess the variability and coherency of thermal diffusivity measurements performed at ultra-high temperatures at the European level. Three refractory materials (molybdenum, tungsten and isotropic graphite IG210) were selected for this inter-laboratory comparison, due to their high melting point. The disk-shaped specimens needed were machined from the same blocks of materials in order to reduce any potential scattering of results between participants due to inhomogeneity effects. The homogeneity of the sets of specimens was studied by the pilot laboratory (LNE) before launching the comparison process. Thermal diffusivity measurements were then carried out by the seven participants on the three materials during two successive thermal cycles up to the maximum temperatures that can be reached by the devices used. The analysis of results showed a good agreement between the participants for temperatures above 400 °C, with relative deviations within the uncertainties of measurement and lower than ± 4 \% for molybdenum, ± 5 \% for isotropic graphite and ± 9 \% for tungsten.}, language = {en} } @article{AckvaDresselEndres, author = {Ackva, Ansgar and Dreßel, Bernd and Endres, Julian}, title = {Umrichter in Hybridstruktur als Entwicklungswerkzeug und Pr{\"u}fsystem f{\"u}r elektrische Antriebe}, series = {FHWS Science Journal}, volume = {1}, journal = {FHWS Science Journal}, number = {2}, address = {W{\"u}rzburg}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-484}, pages = {25 -- 36}, abstract = {Die Entwicklung, Applikation und der Test von Wechselrichtern, insbesondere f{\"u}r Traktionsantriebe, ist mit einem hohen Aufwand f{\"u}r die Bereitstellung einer passenden Testumgebung verbunden. F{\"u}r gew{\"o}hnlich werden diese Tests in der Entwicklung als auch in der Fertigung mit Hilfe von Motor-Generator Pr{\"u}fst{\"a}nden durchgef{\"u}hrt, die wiederum f{\"u}r unterschiedliche Leistungsklassen vorgehalten werden m{\"u}ssen. In diesem Beitrag wird eine neuartige hochdynamische Umrichtertopologie vorgestellt, die als universelles Entwicklungs-, Applikations- und Pr{\"u}fsystem f{\"u}r Umrichter eingesetzt werden kann. Derzeit wird dieser Umrichter in Hybridstruktur im Rahmen eines Forschungsprojektes an der FHWS realisiert.}, language = {de} } @article{DastagerWeith2014, author = {Dastager, Lida and Weith, J{\"u}rgen}, title = {A correlation based method for measuring and monitoring the impulse response of analog LTI systems with low realization cost}, series = {FHWS Science Journal}, volume = {2 (2014)}, journal = {FHWS Science Journal}, number = {1}, organization = {Hochschule f{\"u}r angewandte Wissenschaften W{\"u}rzburg-Schweinfurt}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-996}, pages = {22 -- 38}, year = {2014}, abstract = {This article deals with the problem of measuring the impulse response of a linear time invariant (LTI) analog network. At the beginning three known measurement principles are discussed and compared with respect to their advantages and disadvantages. It is shown that good results can only be attained at the cost of measurement expense. Subsequently a new correlation based method is presented where low complexity and high quality results have not to be a contradiction. The measurement circuit basically consists of two m-sequence generators and an analog low pass filter. The characteristics of the proposed measurement circuit are examined and explained by two examples.}, language = {en} } @article{DastagerWeith2014, author = {Dastager, Lida and Weith, J{\"u}rgen}, title = {Ein Verfahren zur automatischen Abstimmung von Einseitenband-Empf{\"a}ngern}, series = {FHWS Science Journal}, volume = {2 (2014)}, journal = {FHWS Science Journal}, number = {1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-1046}, pages = {16 -- 21}, year = {2014}, abstract = {Es wird ein Verfahren beschrieben, mit dessen Hilfe eine Korrektur der Demodulation von Einseitenband-Signalen (ESB-Signalen) vorgenommen werden kann. Eine solche Korrektur ist dann oft notwendig, wenn sich die Frequenzen, die zur Modulation und zur Demodulation verwendet worden sind, unterscheiden. Typischerweise tritt ein solcher Frequenzunterschied bei der {\"U}bertragung von prachsignalen auf, wenn kein festes Kanalraster zugrunde liegt. Das Korrekturverfahren basiert auf einer Analyse stimmhafter Sprachabschnitte mit dem MUSIC-Verfahren.}, language = {de} } @article{RimacDrljeVlaovićMioković, author = {Rimac-Drlje, Snježana and Vlaović, Jelena and Mioković, Željka}, title = {Gender Issues in Engineering Education}, series = {Papers of 33rd International Scientific Conference "Science in Practice"}, journal = {Papers of 33rd International Scientific Conference "Science in Practice"}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-2724}, pages = {17 -- 21}, abstract = {Female students are a minority in most technical universities in the EU, and some efforts have been made in an attempt to increase the participation of women in engineering. The growing need for IT professionals is one of the main reasons of social interest in attracting more girls to this field. This article provides a comparison of gender-related differences, as well as approaches for improving male-to-female ratio and resolving gender-related problems in engineering education. The article also presents some results of the project "Strengthening women's position in the labor market", funded by the EU and implemented by the Faculty of Electrical Engineering in Osijek. The main objective of the project is to increase the employability of women in the Osijek-Baranja County by motivating more female students to enroll in some of the technical studies.}, language = {en} } @article{ZhongAmrehnRavikumaretal., author = {Zhong, Xia and Amrehn, Mario and Ravikumar, Nishant and Chen, Shuqing and Strobel, Norbert and Birkhold, Annette and Kowarschik, Markus and Fahrig, Rebecca and Maier, Andreas}, title = {Deep action learning enables robust 3D segmentation of body organs in various CT and MRI images}, series = {Scientific Reports}, volume = {11}, journal = {Scientific Reports}, number = {1}, doi = {10.1038/s41598-021-82370-6}, language = {en} } @incollection{KuechlerSchoberHarreretal., author = {K{\"u}chler, Andreas and Schober, F. and Harrer, S. and Krause, Ch. and Berger, Frank}, title = {Einfluss von Temperatur und Ligningehalt auf die elektrische Leitf{\"a}higkeit von Pressspan als HG{\"U}-Isolierwerkstoff}, series = {6. RCC-Fachtagung „Werkstoffe zur Anwendung in der el. Energietechnik unter den besonderen Anforderungen der HG{\"U}"}, booktitle = {6. RCC-Fachtagung „Werkstoffe zur Anwendung in der el. Energietechnik unter den besonderen Anforderungen der HG{\"U}"}, address = {Berlin}, pages = {268 -- 273}, language = {de} } @incollection{KuechlerSchoberHarreretal., author = {K{\"u}chler, Andreas and Schober, F. and Harrer, S. and Wolfinger, T. and Krause, Ch. and Exner, W. and Berger, Frank}, title = {Leitf{\"a}higkeit von Pressspan als diagnostische Kenngr{\"o}ße f{\"u}r HG{\"U}-Betriebsmittel}, series = {ETG-Fachbericht 144}, booktitle = {ETG-Fachbericht 144}, publisher = {VDE}, address = {Berlin}, language = {de} } @book{Eckert, author = {Eckert, Ludwig}, title = {Ein Beitrag zur Implementierung autonomer, intelligenter und feldbusgest{\"u}tzter Sensor-/Aktorsysteme im Feldbereich (CASE/SA)}, publisher = {VDI}, isbn = {3183571102}, language = {de} } @incollection{Kuechler, author = {K{\"u}chler, Andreas}, title = {Ausbildung und Steuerung elektrischer Felder bei Gleichspannungsbeanspruchung}, series = {6. RCC-Fachtagung „Werkstoffe zur Anwendung in der el. Energietechnik unter den besonderen Anforderungen der HG{\"U}"}, booktitle = {6. RCC-Fachtagung „Werkstoffe zur Anwendung in der el. Energietechnik unter den besonderen Anforderungen der HG{\"U}"}, address = {Berlin}, pages = {12 -- 50}, language = {de} } @incollection{KuechlerReumannWirthetal., author = {K{\"u}chler, Andreas and Reumann, Andreas and Wirth, Isabell and Langens, Achim and Berger, Frank}, title = {Erfassung transienter elektrischer Potentialverteilungen in thermisch hoch belasteten Gleichspannungsdurchf{\"u}hrungen}, series = {ETG-Fachbericht 144}, booktitle = {ETG-Fachbericht 144}, publisher = {VDE}, address = {Berlin}, abstract = {Mit Hilfe kapazitiver Steuerung k{\"o}nnen Durchf{\"u}hrungen hochspannungsf{\"u}hrende Leiter durch geerdete W{\"a}nde in Geb{\"a}uden oder Ger{\"a}ten f{\"u}hren. Bei zeitver{\"a}nderlichen Belastungen (Stoß-, Wechselspannungen) wird die gew{\"u}nschte Potentialaufteilung durch die Kapazit{\"a}ten zwischen den leitf{\"a}higen Steuerbel{\"a}gen erzwungen. Bei Gleichspannung ergibt sich eine resistive Steuerung, die bei homogener Leitf{\"a}higkeit des Isolierk{\"o}rpers eine prinzipiell gleichartige Potentialaufteilung ergibt. Durchf{\"u}hrungen sind jedoch thermisch hoch belastete Betriebsmittel, in denen starke Temperaturgradienten und in ihrer Folge starke Leitf{\"a}higkeitsgradienten entstehen, die zu einer erheblichen Verschiebung der Potentialverteilung f{\"u}hren k{\"o}nnen [1]. F{\"u}r Design und Diagnose ist das Verst{\"a}ndnis dieser bisher nur theoretisch erfassbaren Vorg{\"a}nge von großer Bedeutung. Deshalb wurden f{\"u}r experimentelle Untersuchungen zwei identische Durchf{\"u}hrungsk{\"o}rper hergestellt, die mit Temperaturf{\"u}hlern f{\"u}r thermische Messungen bzw. mit Anzapfungen f{\"u}r die Erfassung von elektrischen Potentialen ausger{\"u}stet wurden. Die identische Beheizung beider Leiterrohre erlaubt es, eine Korrelation gemessener thermischer und elektrischer Profile und Transienten herzustellen. F{\"u}r r{\"u}ckwirkungsfreie Messung der Gleichspannungspotentiale wurde ein Rotationsvoltmeter benutzt. Die Untersuchungen best{\"a}tigen das theoretisch erwartete thermisch-elektrische Verhalten und sie zeigen, dass erhebliche transiente und station{\"a}re elektrische Belastungen auftreten k{\"o}nnen, die im Zusammenhang mit thermischen Transienten und Belastungen gesehen werden m{\"u}ssen. Sie sind beim Design in Rechnung zu stellen und sie zeigen, dass die bei dielektrischen Diagnosemessungen erfassten Materialkenngr{\"o}ßen wichtige Aussagen {\"u}ber den elektrischen Belastungszustand der Durchf{\"u}hrung liefern k{\"o}nnen.}, language = {de} } @incollection{KuechlerHuellmandelAppoldetal., author = {K{\"u}chler, Andreas and H{\"u}llmandel, F. and Appold, M. and Liebschner, M. and Krump, R. and Titze, J.}, title = {Diagnose von Hochspannungsdurchf{\"u}hrungen durch PDC-Analyse}, series = {ETG-Fachbericht 104}, booktitle = {ETG-Fachbericht 104}, publisher = {VDE}, address = {Kassel}, language = {de} } @incollection{KuechlerHuellmandelBoehmetal., author = {K{\"u}chler, Andreas and H{\"u}llmandel, F. and B{\"o}hm, K. and Koch, N.}, title = {Einfluss {\"a}ußerer Grenzfl{\"a}chen auf die dielektrische Diagnose betriebsgealterter Hochspannungsdurchf{\"u}hrungen}, series = {ETG-Fachbericht 99}, booktitle = {ETG-Fachbericht 99}, publisher = {VDE}, address = {Hanau}, language = {de} } @incollection{KuechlerZinkBerger, author = {K{\"u}chler, Andreas and Zink, M. and Berger, Frank}, title = {Kompensation des Temperatureinflusses auf dielektrische Messungen im Zeitbereich zur Beschreibung von Isolierwerkstoffen}, series = {ETG-Fachbericht 140}, booktitle = {ETG-Fachbericht 140}, publisher = {VDE}, address = {Dresden}, language = {de} } @incollection{KuechlerHuellmandelBoehmetal., author = {K{\"u}chler, Andreas and H{\"u}llmandel, F. and B{\"o}hm, K. and Liebschner, M. and Appold, M. and Krump, R. and Titze, J.}, title = {Dielectric Diagnosis and Monitoring of High Voltage Bushings}, series = {51. IWK Int. Wissenschaft}, booktitle = {51. IWK Int. Wissenschaft}, publisher = {Technische Universit{\"a}t Ilmenau}, address = {Ilmenau}, language = {en} } @incollection{KuechlerElliottLavieretal., author = {K{\"u}chler, Andreas and Elliott, F.E. and Lavier, B. and K{\"u}hn, W.}, title = {FEM-Study on converter transformer failures in the Celilo HVDC converter station}, series = {IEEE PES winter power meeting}, booktitle = {IEEE PES winter power meeting}, address = {USA}, language = {en} } @incollection{KuechlerKrumpHaberechtetal., author = {K{\"u}chler, Andreas and Krump, R. and Haberecht, P. and Titze, J. and Liebschner, M.}, title = {Bushings for Highest Voltages}, series = {Highvolt-Kolloquium}, booktitle = {Highvolt-Kolloquium}, address = {Dresden}, language = {en} } @incollection{KuechlerDunzHindereretal., author = {K{\"u}chler, Andreas and Dunz, Th. and Hinderer, A. and Schwab, A.}, title = {Transient Field Distribution Measurments with Electrically Long Sensors}, series = {5th ISH Int. Symp. on High Voltage Engineering}, booktitle = {5th ISH Int. Symp. on High Voltage Engineering}, address = {Braunschweig}, pages = {08 -- 32}, language = {en} } @article{Kaupp, author = {Kaupp, Tobias}, title = {Lehre, Forschung und Transfer am Beispiel der Robotik}, series = {FHWS Science Journal}, volume = {5}, journal = {FHWS Science Journal}, number = {2}, issn = {2196-6095}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-20065}, pages = {109 -- 116}, abstract = {Das IDEE ist mit vier Forschungsprofessoren besetzt, die durch eine Lehrentlastung Freir{\"a}ume f{\"u}r den Auf- und Ausbau von interdisziplin{\"a}ren Forschungsaktivit{\"a}ten nutzen k{\"o}nnen. Das Center Robotik (CERI) ist eines der Aufgabengebiete des IDEEs mit den beiden Schwerpunkten »Robotergest{\"u}tzte Arbeitspl{\"a}tze der Zukunft« sowie »Intralogistik in der Smart Factory«. Dieser Artikel besch{\"a}ftigt sich mit dem zweiten Schwerpunkt. Anhand der CERI Aktivit{\"a}ten im Bereich der fahrerlosen Transportsysteme wird aufgezeigt, wie der »Dreiklang« Forschung, Lehre und Transfer in der Praxis umgesetzt wird und die drei Bestandteile sich gegenseitig befruchten k{\"o}nnen.}, language = {de} } @phdthesis{Wirth, author = {Wirth, Isabell}, title = {Ber{\"u}cksichtigung dielektrischer Materialeigenschaften in der Finiten-Elemente-Simulation von HG{\"U}-Isoliersystemen}, series = {Ilmenauer Beitr{\"a}ge zur elektrischen Energiesystem-, Ger{\"a}te- und Anlagentechnik}, journal = {Ilmenauer Beitr{\"a}ge zur elektrischen Energiesystem-, Ger{\"a}te- und Anlagentechnik}, number = {26}, publisher = {Universit{\"a}tsverlag Ilmenau}, address = {Ilmenau}, isbn = {978-3-86360-215-4}, doi = {10.22032/dbt.41185}, pages = {136}, abstract = {Verbrauchsfern erzeugter Strom aus regenerativen Energien kann {\"u}ber große Distanzen am wirtschaftlichsten mittels der Hochspannungsgleichstrom{\"u}bertragung (HG{\"U}) transportiert werden. Die HG{\"U} f{\"u}hrt zu einer ver{\"a}nderten elektrischen Belastung der Hochspannungskomponenten. Transiente {\"U}bergangsvorg{\"a}nge bestimmen die elektrischen Feldverteilungen. Bei der Berechnung elektrischer Feldverteilungen in Isoliersystemen f{\"u}r die Hochspannungsgleichstrom{\"u}bertragung (HG{\"U}) mit Hilfe der Finiten-Elemente-Methode (FEM) wurden die dielektrischen Eigenschaften bisher in Form von Permittivit{\"a}ten und parameterabh{\"a}ngigen Leitf{\"a}higkeiten ber{\"u}cksichtigt. Langsame Polarisationsvorg{\"a}nge werden dabei nicht ber{\"u}cksichtigt. F{\"u}r die Berechnung komplexer Isoliersysteme durch die FEM ist deshalb die Beschreibung der langsamen Polarisationsvorg{\"a}nge im Isolierstoff durch Differentialgleichungen w{\"u}nschenswert, die direkt in die FEM einbezogen werden und mit denen je nach Bedarf sowohl einzelne Polarisationsmechanismen als auch ihre {\"U}berlagerungen ber{\"u}cksichtigt werden k{\"o}nnen. In dieser Arbeit werden hierf{\"u}r auf Basis des bekannten Debye-Ansatzes, und in Analogie zum Netzwerkmodell, zus{\"a}tzlich zu den Gleichungen, die Verschiebungs- und Leitungsstr{\"o}me beschreiben, weitere Differentialgleichungen direkt in die FEM einbezogen, welche die feld- und temperaturabh{\"a}ngigen Polarisationsstr{\"o}me individuell abbilden. Die Materialfunktionen und ihre Parameter werden durch Messung von Polarisations- und Depolarisationsstr{\"o}men (PDC) ermittelt. Durch die Implementierung von beliebigen Polarisationsmechanismen in einem FEM-Programm wurde eine L{\"u}cke der Berechnungsm{\"o}glichkeiten von komplexen, auch dreidimensionalen Isoliersystemen geschlossen, in denen oftmals station{\"a}re oder transiente Temperaturgradienten vorliegen und in denen sich transiente elektrische Feldverteilungen ausbilden. Zur Verifizierung des beschriebenen Berechnungsverfahrens werden transiente Potentialverl{\"a}ufe an den Steuerbel{\"a}gen von entsprechend modifizierten Hochspannungsdurchf{\"u}hrungen unter Gleich- und Umpolspannungen sowie unter thermischen Gradienten gemessen. Dabei kann eine bisher nicht erreichte {\"U}bereinstimmung der transienten und station{\"a}ren Potentialverl{\"a}ufe zwischen FEM-Simulation und Messung erzielt werden. Auswirkungen auf Pr{\"u}f- und Belastungsszenarien werden anhand von Simulationen diskutiert.}, subject = {Hochspannungsgleichstrom{\"u}bertragung}, language = {de} } @misc{Zimmermann, type = {Master Thesis}, author = {Zimmermann, Korbinian}, title = {Verwaltung von Trainingsdaten f{\"u}r K{\"u}nstliche Intelligenz}, school = {Hochschule f{\"u}r Angewandte Wissenschaften W{\"u}rzburg-Schweinfurt}, abstract = {In order to operate a permanent magnet synchronous motor (PSM) as efficiently as possible, it requires precise information about the current thermal state of the electric drive. In most production vehicles, rotor and stator thermocouples are not used for financial reasons. Within the development of a temperature model based on the physical approach, measurements are carried out with a telemetry unit installed in the electric motor. These take place both on the test bench and in the test vehicle. The resulting measurement records give reason to investigate a data-based approach using deep learning, which is the aim of this work. In addition to the evaluation of the existing test bench and vehicle data, the focus is on the development of a neural temperature model. The results obtained will be compared with the existing ECU temperature model.}, language = {de} } @article{MathesSeufert, author = {Mathes, Markus and Seufert, Jochen}, title = {Programmieren in C++ f{\"u}r Elektrotechniker und Mechatroniker}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-38501-9}, doi = {10.1007/978-3-658-38501-9}, pages = {252}, abstract = {Das Buch Programmieren in C++ f{\"u}r Elektrotechniker und Mechatroniker bietet einen Einstieg in die moderne Softwareentwicklung f{\"u}r Studierende der Ingenieurwissenschaften. Dabei wird ein durchg{\"a}ngiger Ansatz verfolgt, der, beginnend mit den Grundlagen der Programmierung, bis hin zu weiterf{\"u}hrenden Themen, wie Hardware-nahe Programmierung, zahlreiche Themengebiete betrachtet und Studierende nicht nur f{\"u}r die Pr{\"u}fung, sondern auch f{\"u}r den Arbeitsalltag vorbereitet. Da man Programmieren nur durch {\"U}ben erlernen kann, liefert das Buch einen umfangreichen Aufgabenkatalog.}, language = {de} } @article{GustavsenRahimpour, author = {Gustavsen, B. and Rahimpour, Ebrahim}, title = {High-Frequency Transformer and Reactor Models for Network Studies, Part E: Measurements and transformer design details}, series = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 904}, journal = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 904}, isbn = {978-2-8587-3609-6}, pages = {1 -- 140}, language = {en} } @article{GustavsenRahimpour, author = {Gustavsen, B. and Rahimpour, Ebrahim}, title = {High-Frequency Transformer and Reactor Models for Network Studies, Part D: Model interfacing and specifications}, series = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 903}, journal = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 903}, isbn = {978-2-8587-3608-9}, pages = {1 -- 43}, language = {en} } @article{GustavsenRahimpour, author = {Gustavsen, B. and Rahimpour, Ebrahim}, title = {High-Frequency Transformer and Reactor Models for Network Studies, Part B: Black-Box Models}, series = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 901}, journal = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 901}, isbn = {978-2-8587-3606-5}, pages = {1 -- 88}, language = {en} } @article{GustavsenRahimpour, author = {Gustavsen, B. and Rahimpour, Ebrahim}, title = {High-Frequency Transformer and Reactor Models for Network Studies, Part A: White-Box Models}, series = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 900}, journal = {Conseil International des Grands R{\´e}seaux {\´E}lectriques (CIGRE) TB 900}, isbn = {978-2-8587-3605-8}, pages = {1 -- 203}, language = {en} } @book{Kuechler, author = {K{\"u}chler, Andreas}, title = {Erfassung transienter elektromagnetischer Feldverteilungen mit konzentrierten und r{\"a}umlich ausgedehnten Sensoren}, publisher = {VDI}, address = {D{\"u}sseldorf}, language = {de} }