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Institut für Leistungselektronik und Elektrische Antriebe
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Veröffentlichungen am Institut für Leistungselektronik und Elektrische Antriebe

2019
1. Nitzsche, M., Cheshire, C., Fischer, M., Ruthardt, J., Roth-Stielow, J.: Comprehensive Comparison of a SiC MOSFET and Si IGBT Based Inverter. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–7. VDE Verlag (2019).
  - BibTeX
  @inproceedings{8767737, abstract = {The investment which is necessary to replace Si IGBTs with SiC MOSFETs in medium to high power DC-AC inverters needs to be balanced carefully against the advantages SiC offers. This paper compares a 20 kW Si IGBT inverter with a 20 kW SiC MOSFET inverter. The power semiconductor components are operated identically in a modular half bridge module to ensure comparability. Thereby the measurement of the switching losses is explicitly not the focus but the overall efficiency while taking volume, current ripple, switching frequency and inductance into account. The limits of reasonable operating range shall be evaluated and an overview on the benefits of SiC on system level will be given.}, author = {Nitzsche, Maximilian and Cheshire, Christoph and Fischer, Manuel and Ruthardt, Johannes and Roth-Stielow, Jörg}, booktitle = {PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, eventdate = {7. - 9. Mai 2019}, isbn = {978-3-8007-4938-6}, month = may, pages = {1-7}, publisher = {VDE Verlag}, title = {Comprehensive Comparison of a SiC MOSFET and Si IGBT Based Inverter}, year = 2019 }
2. Fischer, M., Malić, R., Tröster, N., Ruthardt, J., Roth-Stielow, J.: Design of a three-phase 100 A linear amplifier for power-hardware-in-the-loop machine emulation. IET: The Journal of Engineering. 2019, 4041 – 4044 (2019). https://doi.org/10.1049/joe.2018.8142.
  - BibTeX
  @article{fischer2019design, author = {Fischer, Manuel and Malić, Robert and Tröster, Nathan and Ruthardt, Johannes and Roth-Stielow, Jörg}, doi = {10.1049/joe.2018.8142}, issn = {2051-3305}, journal = {IET: The Journal of Engineering}, month = jun, number = 17, pages = {4041 – 4044}, title = {Design of a three-phase 100 A linear amplifier for power-hardware-in-the-loop machine emulation}, volume = 2019, year = 2019 }
3. Fischer, M., Ruthardt, J., Nitzsche, M., Ziegler, P., Roth-Stielow, J.: Investigation on Carrier Signals to Minimize the Overall Current Ripple of an Interleaved-Switched Inverter. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–6. VDE Verlag (2019).
  - BibTeX
  @inproceedings{8767709, abstract = {This paper proposes a method to minimize the overall output current ripple of an interleaved-switched inverter with several half bridge branches per phase. Therefore, two types of temporal shift between the carrier signals of different branches and phases are defined. In order to get the smallest possible overall current ripple, a dynamic variation of these two temporal shifts is investigated.}, author = {Fischer, Manuel and Ruthardt, Johannes and Nitzsche, Maximilian and Ziegler, Philipp and Roth-Stielow, Jörg}, booktitle = {PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, eventdate = {7. - 9. Mai 2019}, isbn = {978-3-8007-4938-6}, language = {English}, month = may, pages = {1-6}, publisher = {VDE Verlag}, title = {Investigation on Carrier Signals to Minimize the Overall Current Ripple of an Interleaved-Switched Inverter}, year = 2019 }
4. Ruthardt, J., Hermann, C., Wölfle, J., Fischer, M., Roth-Stielow, J.: Gate-driver circuit with a variable supply voltage to influence the switching losses. The Journal of Engineering. 2019, 3692--3695 (2019). https://doi.org/10.1049/joe.2018.8129.
  - BibTeX
  - Link
  @article{Ruthardt_2019, abstract = {The lifetime of semiconductor devices used in power electronics depends on the junction temperature. With a suitable junction temperature control system, the lifetime of semiconductor devices is extended. These control systems require a possibility to influence the power losses of the semiconductor devices and therefore the junction temperature. The proposed gate-driver circuit has a variable supply voltage in order to influence the switching speed of the semiconductor devices. This affects the switching losses. In addition, the adjustable switching speed can be used to prevent voltage overshoots during the switching transition or to decrease electromagnetic emission. The main advantage of this gate-driver circuit is its simple structure. This study focuses on the switching losses. }, author = {Ruthardt, Johannes and Hermann, Chris and Wölfle, Julian and Fischer, Manuel and Roth-Stielow, Jörg}, doi = {10.1049/joe.2018.8129}, issn = {2051-3305}, journal = {The Journal of Engineering}, language = {English}, month = jun, number = 17, pages = {3692--3695}, publisher = {Institution of Engineering and Technology ({IET})}, title = {Gate-driver circuit with a variable supply voltage to influence the switching losses}, url = {https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8129}, volume = 2019, year = 2019 }
5. Bintz, S., Fischer, M., Roth-Stielow, J.: Load Emulation for Electrolysis Rectifiers. In: 13th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2019). IEEE (2019).
  - BibTeX
  @inproceedings{bintz2019emulation, author = {Bintz, Steffen and Fischer, Manuel and Roth-Stielow, Jörg}, booktitle = {13th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2019)}, eventdate = {9 – 12 July 2019}, language = {English}, month = {July}, publisher = {IEEE}, title = {Load Emulation for Electrolysis Rectifiers}, year = 2019 }
6. Zehelein, M., Portik, J., Nitzsche, M., Marx, P., Roth-Stielow, J.: Reduction of the Leakage Currents by Switching Transition Synchronization for a Four-Switch Buck-Boost Converter. In: 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia). pp. 2217–2223. IEEE (2019).
  - BibTeX
  @inproceedings{8796950, abstract = {Wide-bandgap transistors are operated at much higher switching transition voltage slopes and current slopes compared to silicon power transistors. For the design of new power electronic devices compactness is a main focus, which increases parasitic capacitances of the device. This trend leads to significantly higher common and differential mode distortions especially at high frequency ranges. To overcome this drawback, efficient filter techniques for these distortions are necessary. This paper focuses on the leakage current reduction in four switch buck-boost converter topologies by synchronizing the switching transitions of the buck and boost stage to achieve a leakage current cancellation. By designing two similar leakage current paths and using destructive interference of two inversely excited leakage currents, the overall leakage current at the heat sink of the device is decreased. This study investigates the effectiveness of the leakage current reduction depending on different operating points for buck and boost operation.}, author = {Zehelein, Matthias and Portik, Julian and Nitzsche, Maximilian and Marx, Philipp and Roth-Stielow, Jörg}, booktitle = {2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia)}, eventdate = {27-30 May 2019}, month = may, organization = {IEEE}, pages = {2217-2223}, title = {Reduction of the Leakage Currents by Switching Transition Synchronization for a Four-Switch Buck-Boost Converter}, year = 2019 }
7. Speckmann, F.-W., Bintz, S., Birke, K.P.: Influence of rectifiers on the energy demand and gas quality of alkaline electrolysis systems in dynamic operation. Applied Energy. 250, 855–863 (2019). https://doi.org/10.1016/j.apenergy.2019.05.014.
  - BibTeX
  - Link
  @article{SPECKMANN2019855, abstract = {This paper investigates the correlation between different rectifier topologies and the energy demand as well as the gas quality of an alkaline electrolysis. The focus lies on recent scenarios which require partial load operation of electrolyzers. The layout-dependent current outputs of three conventional and a self-developed rectifier were simulated based on actual measurement data. After the down-scaling of the acquired current profiles, these were applied to a lab-scale alkaline electrolyzer. The rectifier structures are assessed for dynamic operation between 25% and 100% of their nominal load. Experimental results show a strong influence of the rectified current quality on the required electrical energy of the electrolysis process. Conventional thyristor structures with a high current ripple consume up to 13% more energy compared to the newly designed process current source, which provides an almost perfectly smoothed direct current. Additionally, high current ripples, which occur especially in low load scenarios, cause oxygen to diffuse to the hydrogen half cell and reduce the product gas purity. Therefore, not every rectifier is suited for dynamic operation of electrolysis systems.}, author = {Speckmann, Friedrich-W. and Bintz, Steffen and Birke, Kai Peter}, doi = {https://doi.org/10.1016/j.apenergy.2019.05.014}, issn = {0306-2619}, journal = {Applied Energy}, pages = {855 - 863}, title = {Influence of rectifiers on the energy demand and gas quality of alkaline electrolysis systems in dynamic operation}, url = {https://doi.org/10.1016/j.apenergy.2019.05.014}, volume = 250, year = 2019 }
8. Ruthardt, J., Muñoz Barón, K., Marx, P., Sharma, K., Nitzsche, M., Fischer, M., Roth-Stielow, J.: Online Junction Temperature Measurement via Internal Gate Resistance Using the High Frequency Gate Signal Injection Method. In: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–7. VDE Verlag (2019).
  - BibTeX
  @inproceedings{8767601, abstract = {In many power electronic applications, it is important to monitor the junction temperature of the power semiconductor devices. This enables for example an abnormal temperature protection, lifetime monitoring or junction temperature control. This paper proposes an online junction temperature measurement based on the internal gate resistance as a temperature sensitive electrical parameter. A direct measurement of this resistance is not possible. Therefore, a high frequency signal is injected into the gate circuit to measure the gate circuit's impedance, which includes the temperature sensitive internal gate resistance. This paper focuses on a simple realization of this method.}, author = {Ruthardt, Johannes and Muñoz Barón, Kevin and Marx, Philipp and Sharma, Kanuj and Nitzsche, Maximilian and Fischer, Manuel and Roth-Stielow, Jörg}, booktitle = {PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, eventdate = {7. - 9. Mai 2019}, isbn = {978-3-8007-4938-6}, language = {English}, month = may, pages = {1-7}, publisher = {VDE Verlag}, title = {Online Junction Temperature Measurement via Internal Gate Resistance Using the High Frequency Gate Signal Injection Method}, year = 2019 }
9. Zehelein, M., Ruthardt, J., Nitzsche, M., Tymosch, T., Roth-Stielow, J.: Leakage current reduction for a double-leg boost converter by switching transition synchronisation. The Journal of Engineering. 2019, 3789–3792 (2019). https://doi.org/10.1049/joe.2018.8128.
  - BibTeX
  - Link
  @article{iet:/content/journals/10.1049/joe.2018.8128, abstract = {With wide-bandgap transistors, the leakage current through the parasitic transistor to heat sink capacitance is increased with the operation at higher switching transition voltage slopes. This study presents a modulation synchronisation method for a double-leg boost converter to reduce these leakage currents. Having a similar leakage current path, the transistors turn-on transition of one leg is synchronised on the turn-off transition of the second leg.}, author = {Zehelein, Matthias and Ruthardt, Johannes and Nitzsche, Maximilian and Tymosch, Tobias and Roth-Stielow, Jörg}, copyright = {This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)}, doi = {10.1049/joe.2018.8128}, issn = {2051-3305}, journal = {The Journal of Engineering}, language = {English}, month = {June}, number = 17, pages = {3789-3792}, publisher = {Institution of Engineering and Technology}, title = {Leakage current reduction for a double-leg boost converter by switching transition synchronisation}, url = {https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8128}, volume = 2019, year = 2019 }
10. Nitzsche, M., Zehelein, M., Roth-Stielow, J.: Design of a full SiC three-phase power factor correction with an interleaved output buck converter. The Journal of Engineering. 2019, 4143--4146 (2019). https://doi.org/10.1049/joe.2018.8127.
  - BibTeX
  - Link
  @article{Nitzsche_2019, abstract = {Active rectification of the three-phase grid nowadays is a central task of power electronics. However, as the necessary DC bus voltages vary, DC-DC converters are needed. This study presents the design and development of a three-phase power factor correction with an interleaved buck converter in the output stage. The power stage switches are equipped with silicon carbide (SiC) metal-oxide-semiconductor field-effect transistors. A modular setup of the half-bridge modules as well as low inductive design of these modules is put into focus. }, author = {Nitzsche, Maximilian and Zehelein, Matthias and Roth-Stielow, Jörg}, doi = {10.1049/joe.2018.8127}, issn = {2051-3305}, journal = {The Journal of Engineering}, language = {English}, month = jun, number = 17, pages = {4143--4146}, publisher = {Institution of Engineering and Technology ({IET})}, title = {Design of a full {SiC} three-phase power factor correction with an interleaved output buck converter}, url = {https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8127}, volume = 2019, year = 2019 }
2018
1. Ruthardt, J., Wölfle, J., Tröster, N., Fischer, M., Roth-Stielow, J.: Dead Time as a Correction Variable for Junction Temperature Control. In: 20th European conference on power electronics and applications. IEEE (2018).
  - BibTeX
  @inproceedings{noauthororeditor2018, author = {Ruthardt, Johannes and Wölfle, Julian and Tröster, Nathan and Fischer, Manuel and Roth-Stielow, Jörg}, booktitle = {20th European conference on power electronics and applications}, month = {September}, publisher = {IEEE}, title = {Dead Time as a Correction Variable for Junction Temperature Control}, year = 2018 }
2. Ruthardt, J., Fischer, M., Wölfle, J., Tröster, N., Roth-Stielow, J.: Three-Level-gate-Driver to Run Power Transistors in the Saturation Region for Junction Temperature Control. In: Mesago PCIM GmbH, S. (ed.) International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM). pp. 1562–1569. VDE (2018).
  - BibTeX
  @inproceedings{ruthardt2018threelevelgatedriver, author = {Ruthardt, Johannes and Fischer, Manuel and Wölfle, Julian and Tröster, Nathan and Roth-Stielow, Jörg}, booktitle = {International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM)}, editor = {Mesago PCIM GmbH, Stuttgart}, isbn = {ISBN 978-3-8007-4646-0}, month = {Juni}, pages = {1562-1569}, publisher = {VDE}, title = {Three-Level-gate-Driver to Run Power Transistors in the Saturation Region for Junction Temperature Control}, year = 2018 }
3. Ruthardt, J., Hermann, C., Wölfle, J., Fischer, M., Roth-Stielow, J.: Gate Driver Circuit with a Variable Supply Voltage to Influence the Switching Losses. In: The 9th International Conference on Power Electronics, Machines and Drives (PEMD). IET (2018).
  - BibTeX
  @inproceedings{ruthardt2018driver, author = {Ruthardt, Johannes and Hermann, Chris and Wölfle, Julian and Fischer, Manuel and Roth-Stielow, Jörg}, booktitle = {The 9th International Conference on Power Electronics, Machines and Drives (PEMD)}, month = {April}, publisher = {IET}, title = {Gate Driver Circuit with a Variable Supply Voltage to Influence the Switching Losses}, year = 2018 }
4. Tröster, N., Ruthardt, J., Nitzsche, M., Wölfle, J., Roth-Stielow, J.: Wide Bandwidth Current Sensor combining a Coreless Current Transformer and TMR Sensors. In: Mesago PCIM GmbH, S. (ed.) International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM). pp. 1349–1355. VDE (2018).
  - BibTeX
  - Link
  @inproceedings{troster2018bandwidth, author = {Tröster, Nathan and Ruthardt, Johannes and Nitzsche, Maximilian and Wölfle, Julian and Roth-Stielow, Jörg}, booktitle = {International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM)}, editor = {Mesago PCIM GmbH, Stuttgart}, isbn = {ISBN 978-3-8007-4646-0}, month = {Juni}, pages = {1349-1355}, publisher = {VDE}, title = {Wide Bandwidth Current Sensor combining a Coreless Current Transformer and TMR Sensors}, url = {https://ieeexplore.ieee.org/document/8403012}, year = 2018 }
5. Zehelein, M., Ruthardt, J., Nitzsche, M., Tymosch, T., Roth-Stielow, J.: Leakage current reduction for a double-leg boost-converter by switching transition synchronization. In: Journal of Engineering; The 9th International Conference on Power Electronics, Machines and Drives (PEMD). IET (2018).
  - BibTeX
  - Link
  @inproceedings{pemd2018leakage, abstract = {With wide-bandgap transistors, the leakage current through the parasitic transistor to heat sink capacitance is increased with the operation at higher switching transition voltage slopes. This study presents a modulation synchronisation method for a double-leg boost converter to reduce these leakage currents. Having a similar leakage current path, the transistors turn-on transition of one leg is synchronised on the turn-off transition of the second leg.}, author = {Zehelein, Matthias and Ruthardt, Johannes and Nitzsche, Maximilian and Tymosch, Tobias and Roth-Stielow, Jörg}, booktitle = {Journal of Engineering; The 9th International Conference on Power Electronics, Machines and Drives (PEMD)}, month = {April}, publisher = {IET}, title = {Leakage current reduction for a double-leg boost-converter by switching transition synchronization}, url = {https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8128}, year = 2018 }
6. Bintz, S., Fischer, M., Roth-Stielow, J.: Parallel Rectifier for Regenerative Hydrogen Production Utilizing a Combination of Thyristor and PWM-based Topologies. In: Proceedings of the EPE 2018 conference. IEEE (2018).
  - BibTeX
  @inproceedings{bintz2018parallel, author = {Bintz, Steffen and Fischer, Manuel and Roth-Stielow, Jörg}, booktitle = {Proceedings of the EPE 2018 conference}, eventdate = {18.9. - 20.9.2018}, eventtitle = {EPE 2018}, month = {September}, publisher = {IEEE}, title = {Parallel Rectifier for Regenerative Hydrogen Production Utilizing a Combination of Thyristor and PWM-based Topologies}, year = 2018 }
7. Nitzsche, M., Zehelein, M., Roth-Stielow, J.: Design of a full SiC 3-phase power factor correction with interleaved output buck converter. In: Journal of Engineering; The 9th International Conference on Power Electronics, Machines and Drives (PEMD). IET (2018). https://doi.org/10.1049/joe.2018.8127.
  - BibTeX
  - Link
  @inproceedings{nitzsche2018design, author = {Nitzsche, Maximilian and Zehelein, Matthias and Roth-Stielow, Jörg}, booktitle = {Journal of Engineering; The 9th International Conference on Power Electronics, Machines and Drives (PEMD)}, doi = {10.1049/joe.2018.8127}, month = {April}, publisher = {IET}, title = {Design of a full SiC 3-phase power factor correction with interleaved output buck converter}, url = {https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8127}, year = 2018 }
8. Fischer, M., Malić, R., Tröster, N., Ruthardt, J., Roth-Stielow, J.: Design of a Three-Phase 100 Ampere Linear Amplifier for Power-Hardware-in-the-Loop Machine-Emulation. In: The 9th International Conference on Power Electronics, Machines and Drives (PEMD). IET (2018).
  - BibTeX
  @inproceedings{fischer2018design, author = {Fischer, Manuel and Malić, Robert and Tröster, Nathan and Ruthardt, Johannes and Roth-Stielow, Jörg}, booktitle = {The 9th International Conference on Power Electronics, Machines and Drives (PEMD)}, month = {April}, publisher = {IET}, title = {Design of a Three-Phase 100 Ampere Linear Amplifier for Power-Hardware-in-the-Loop Machine-Emulation}, year = 2018 }
9. Wölfle, J., Pitters, M., Ruthardt, J., Schuster, J., Stempfle, M., Roth-Stielow, J.: Comparision of Two Model based Temperature Control Systems Implemented on a Three Level T-Type Inverter. In: Mesago PCIM GmbH, S. (ed.) International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM). pp. 1520–1527. VDE (2018).
  - BibTeX
  @inproceedings{wolfle2018comparision, author = {Wölfle, Julian and Pitters, Matthias and Ruthardt, Johannes and Schuster, Johannes and Stempfle, Martin and Roth-Stielow, Jörg}, booktitle = {International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM)}, editor = {Mesago PCIM GmbH, Stuttgart}, isbn = {ISBN 978-3-8007-4646-0}, month = {Juni}, pages = {1520-1527}, publisher = {VDE}, title = {Comparision of Two Model based Temperature Control Systems Implemented on a Three Level T-Type Inverter}, year = 2018 }
10. Nitzsche, M., Zehelein, M., Tröster, N., Roth-Stielow, J.: Precise Voltage Measurement for Power Electronics with High Switching Frequencies. In: Mesago PCIM GmbH, S. (ed.) International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM). pp. 1356–1361. VDE (2018).
  - BibTeX
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  @inproceedings{nitzsche2018precise, author = {Nitzsche, Maximilian and Zehelein, Matthias and Tröster, Nathan and Roth-Stielow, Jörg}, booktitle = {International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM)}, editor = {Mesago PCIM GmbH, Stuttgart}, isbn = {ISBN 978-3-8007-4646-0}, month = {Juni}, pages = {1356-1361}, publisher = {VDE}, title = {Precise Voltage Measurement for Power Electronics with High Switching Frequencies}, url = {https://ieeexplore.ieee.org/document/8403013}, year = 2018 }
11. Fischer, M., Petzner, S., Ruthardt, J., Schuster, J., Bintz, S., Roth-Stielow, J.: Current Control for a Multiphase Interleaved-Switched Inverter Using Field Oriented Coordinates. Presented at the (2018).
  - BibTeX
  @inproceedings{fischer2018current, author = {Fischer, Manuel and Petzner, Sven and Ruthardt, Johannes and Schuster, Johannes and Bintz, Steffen and Roth-Stielow, Jörg}, month = {September}, publisher = {IEEE}, title = {Current Control for a Multiphase Interleaved-Switched Inverter Using Field Oriented Coordinates}, year = 2018 }
12. Speckmann, F.-W., Bintz, S., Groninger, M.L., Birke, K.P.: Alkaline Electrolysis with Overpotential-Reducing Current Profiles. Journal of The Electrochemical Society. 165, F456--F462 (2018). https://doi.org/10.1149/2.0511807jes.
  - BibTeX
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  @article{Speckmann_2018, author = {Speckmann, F.-W. and Bintz, S. and Groninger, M. L. and Birke, K. P.}, doi = {10.1149/2.0511807jes}, journal = {Journal of The Electrochemical Society}, number = 7, pages = {F456--F462}, publisher = {The Electrochemical Society}, title = {Alkaline Electrolysis with Overpotential-Reducing Current Profiles}, url = {https://doi.org/10.1149%2F2.0511807jes}, volume = 165, year = 2018 }
13. Schuster, J., Ketchedjian, V., Roth-Stielow, J.: Sensorless Position Estimation for an Externally Excited Synchronous Machine over the Whole Speed Range. In: Mesago PCIM GmbH, S. (ed.) International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM). pp. 1192–1198. VDE (2018).
  - BibTeX
  @inproceedings{schuster2018sensorless, author = {Schuster, Johannes and Ketchedjian, Vasken and Roth-Stielow, Jörg}, booktitle = {International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings (PCIM)}, editor = {Mesago PCIM GmbH, Stuttgart}, isbn = {ISBN 978-3-8007-4646-0}, month = {Juni}, pages = {1192-1198}, publisher = {VDE}, title = {Sensorless Position Estimation for an Externally Excited Synchronous Machine over the Whole Speed Range}, year = 2018 }
14. Bintz, S., Speckmann, F.W., Roth-Stielow, J.: Process Current Source for Investigation on Current Waveform in Electrolysis Process. ECS Transactions. 83, 195--209 (2018). https://doi.org/10.1149/08301.0195ecst.
  - BibTeX
  @article{Bintz_2018, author = {Bintz, Steffen and Speckmann, Friedrich Wilhelm and Roth-Stielow, Jörg}, doi = {10.1149/08301.0195ecst}, journal = {{ECS} Transactions}, month = jan, number = 1, pages = {195--209}, publisher = {The Electrochemical Society}, title = {Process Current Source for Investigation on Current Waveform in Electrolysis Process}, volume = 83, year = 2018 }
15. Tröster, N., Eisenhardt, T., Zehelein, M., Wölfle, J., Ruthardt, J., Roth-Stielow, J.: Improvements of a Coaxial Current Sensor with a Wide Bandwidth Based on the HOKA Principle. Presented at the (2018).
  - BibTeX
  @inproceedings{troster2018improvements, author = {Tröster, Nathan and Eisenhardt, Torsten and Zehelein, Matthias and Wölfle, Julian and Ruthardt, Johannes and Roth-Stielow, Jörg}, month = {September}, publisher = {IEEE}, title = {Improvements of a Coaxial Current Sensor with a Wide Bandwidth Based on the HOKA Principle}, year = 2018 }
2017
1. Schuster, J., Ketchedjian, V., Roth-Stielow, J.: Sensorless position estimation at low speeds till standstill with reduced filtering requirements for an externally exited synchronous machine. In: 2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED). IEEE (2017). https://doi.org/10.1109/sled.2017.8078422.
  - BibTeX
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  @inproceedings{SLED_Schuster_2017, author = {Schuster, Johannes and Ketchedjian, Vasken and Roth-Stielow, Jorg}, booktitle = {2017 {IEEE} International Symposium on Sensorless Control for Electrical Drives ({SLED})}, doi = {10.1109/sled.2017.8078422}, month = sep, publisher = {{IEEE}}, title = {Sensorless position estimation at low speeds till standstill with reduced filtering requirements for an externally exited synchronous machine}, url = {https://doi.org/10.1109%2Fsled.2017.8078422}, year = 2017 }
2. Tröster, N., Dominković, B., Wölfle, J., Fischer, M., Roth-Stielow, J.: Wide bandwidth current probe for power electronics using tunneling magnetoresistance sensors. In: 2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS). pp. 35–40 (2017). https://doi.org/10.1109/PEDS.2017.8289128.
  - BibTeX
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  @inproceedings{trster2017bandwidth, abstract = {This paper presents a contact-free current probe, developed to measure typical current profiles which appear in power electronic circuits. For high switching frequencies and steep current slopes the requirement for the dynamic of the current probe is high. This means the current probe needs a wide bandwidth from DC up to several megahertz. This is achieved by the combination of two current measurement principles, Tunneling Magnetoresistance (TMR) sensors and a Rogowski coil.}, author = {Tröster, N. and Dominković, B. and Wölfle, J. and Fischer, M. and Roth-Stielow, J.}, booktitle = {2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)}, doi = {10.1109/PEDS.2017.8289128}, month = dec, pages = {35-40}, title = {Wide bandwidth current probe for power electronics using tunneling magnetoresistance sensors}, url = {https://doi.org/10.1109/PEDS.2017.8289128}, year = 2017 }
3. Ruthardt, J., Blank, F., Wölfle, J., Tröster, N., Roth-Stielow, J.: Power supply with active energy storage to reuse the braking energy for servo drives. In: 2017 19th European Conference on Power Electronics and Applications (EPE’17 ECCE Europe). p. P.1-P.9 (2017). https://doi.org/10.23919/EPE17ECCEEurope.2017.8099002.
  - BibTeX
  - Link
  @inproceedings{8099002, author = {Ruthardt, J. and Blank, F. and Wölfle, J. and Tröster, N. and Roth-Stielow, J.}, booktitle = {2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)}, doi = {10.23919/EPE17ECCEEurope.2017.8099002}, month = {Sept}, pages = {P.1-P.9}, title = {Power supply with active energy storage to reuse the braking energy for servo drives}, url = {https://doi.org/10.23919%2Fepe17ecceeurope.2017.8099002}, year = 2017 }
4. Wölfle, J., Röser, T., Nitzsche, M., Tröster, N., Stempfle, M., Ruthardt, J., Roth-Stielow, J.: Model based temperature control system to increase the expected lifetime of IGBT power modules executed on a neutral point diode clamped three level inverter. In: 2017 19th European Conference on Power Electronics and Applications (EPE’17 ECCE Europe). p. P.1-P.9 (2017). https://doi.org/10.23919/EPE17ECCEEurope.2017.8099156.
  - BibTeX
  - Link
  @inproceedings{8099156, author = {Wölfle, J. and Röser, T. and Nitzsche, M. and Tröster, N. and Stempfle, M. and Ruthardt, J. and Roth-Stielow, J.}, booktitle = {2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)}, doi = {10.23919/EPE17ECCEEurope.2017.8099156}, month = {Sept}, pages = {P.1-P.9}, title = {Model based temperature control system to increase the expected lifetime of IGBT power modules executed on a neutral point diode clamped three level inverter}, url = {https://doi.org/10.23919/EPE17ECCEEurope.2017.8099156}, year = 2017 }
5. Woelfle, J., Nitzsche, M., Troester, N., Stempfle, M., Roth-Stielow, J.: Comparison of Three Model Based Junction Temperature Control Systems to Increase the Lifetime of IGBT-Power-Modules. In: PCIM Europe - Nuremberg, Germany. VDE (2017).
  - BibTeX
  - Link
  @inproceedings{woelfle2017pcim, author = {Woelfle, Julian and Nitzsche, Maximilian and Troester, Nathan and Stempfle, Martin and Roth-Stielow, Jörg}, booktitle = {PCIM Europe - Nuremberg, Germany }, isbn = {978-3-8007-4424-4}, month = may, publisher = {VDE}, title = {Comparison of Three Model Based Junction Temperature Control Systems to Increase the Lifetime of IGBT-Power-Modules}, url = {http://ieeexplore.ieee.org/document/7990877/}, year = 2017 }
6. Schramm, A., Sworowski, E., Roth-Stielow, J.: Compensation of torque ripples in permanent magnet synchronous machines up to the field weakening range. In: 2017 7th International Electric Drives Production Conference (EDPC). pp. 1–8 (2017). https://doi.org/10.1109/EDPC.2017.8328154.
  - BibTeX
  - Link
  @inproceedings{8328154, abstract = {In this paper, a method for compensation of torque ripples in permanent magnet synchronous machines is presented. The motivation is to reduce torque-ripple-induced vibration and acoustic noise. Since the torque ripples are predominant in the field weakening range the focus is to set up a compensation method in high-speed ranges. Based on the modeled torque ripple effects, an optimized control strategy is developed to realize a precise harmonic voltage excitation. Furthermore, the limiting factor of the available voltage in the field weakening range is considered and an extended control strategy is introduced to allow a compensation of torque ripples close to the voltage limit.}, author = {Schramm, A. and Sworowski, E. and Roth-Stielow, J.}, booktitle = {2017 7th International Electric Drives Production Conference (EDPC)}, doi = {10.1109/EDPC.2017.8328154}, month = dec, pages = {1-8}, title = {Compensation of torque ripples in permanent magnet synchronous machines up to the field weakening range}, url = {https://doi.org/10.1109/EDPC.2017.8328154}, year = 2017 }
7. Fischer, M., Roth-Stielow, J.: Analysis of the Influence of Static and Dynamic Eccentricity on Back EMF of a Permanent Magnet Synchronous Motor. In: Innovative Small Drives and Micro-Motor Systems; 11th GMM/ETG-Symposium. pp. 1–6 (2017).
  - BibTeX
  @inproceedings{8241180, abstract = {In this paper the measurement results that represent the back electromotive force (EMF) of a small drive permanent magnet synchronous machine (PMSM) are proposed. The focus is on the comparison between three mechanical configurations: the original one and a setup with static and dynamic eccentricity. Additionally, the influence of compensating currents is considered due to the circuitry of the windings belonging to one phase. This leads to quite similar gradients of back EMF in all three mechanical configurations. The PMSM consists of an external rotor, has a pole pair number of 4 and a mechanical output power of 240 W. Each electric phase consists of four windings. Two of them are serial connected and both serial connections are parallel connected. If the partial back EMF at one winding is not equal to the back EMF at windings of the same phase, compensating currents will occur and will counteract the partial back EMF. This happens especially in case of static and dynamic eccentricity. In these cases the air gap length as well as the partial back EMF depend besides on the position also on the angle between the rotor and the stator of the machine. To analyse the back EMF at several operating points, a machine test bench is set up. In order to measure the partial back EMF, the machine is equipped with additional stator windings. Furthermore, the parallel connections of the windings are disconnected and the pins are led through the machine's package. On the one hand, it is possible to leave the connection open-circuited to avoid compensating currents. On the other hand, the connection can be restored using an amperemeter, which enables a measurement of the intensity of the compensating currents at different operating points. Due to mechanical modifications on the machine it is possible to analyse the specific influence of static and dynamic eccentricity.}, author = {Fischer, M. and Roth-Stielow, J.}, booktitle = {Innovative Small Drives and Micro-Motor Systems; 11th GMM/ETG-Symposium}, month = {Sept}, pages = {1-6}, title = {Analysis of the Influence of Static and Dynamic Eccentricity on Back EMF of a Permanent Magnet Synchronous Motor}, year = 2017 }
8. Stempfle, M., Han, Y., Woelfle, J., Troester, N., Roth-Stielow, J.: Influence of Different Switching Frequencies and Modulation Techniques on IPMSM and Inverter Losses Optimizing the Overall Drive Train Efficiency. In: PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–5 (2017).
  - BibTeX
  @inproceedings{7990931, abstract = {For the optimization of the drive train efficiency, a trade-off between inverter and machine losses is of importance. The inverter's switching frequency and modulation technique influence these losses. In this paper the power loss characteristics of a 70 kW interior permanent magnet synchronous machine are analyzed for different switching frequencies and modulation techniques. Furthermore the machine losses are opposed to the losses of a three phase two-level voltage source inverter. Finally the benefit through the optimization process is shown for several operating points and utilized on a driving cycle. The results of the paper are derived from measurements on a test bench.}, author = {Stempfle, M. and Han, Y. and Woelfle, J. and Troester, N. and Roth-Stielow, J.}, booktitle = {PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, month = may, pages = {1-5}, title = {Influence of Different Switching Frequencies and Modulation Techniques on IPMSM and Inverter Losses Optimizing the Overall Drive Train Efficiency}, year = 2017 }
9. Schuster, J., Schenkyr, M., Roth-Stielow, J.: A comparison of two methods for sensorless position estimation using the electromagnetic force at an electrically excited synchronous machine. In: 2017 19th European Conference on Power Electronics and Applications (EPE’17 ECCE Europe). p. P.1-P.10 (2017). https://doi.org/10.23919/EPE17ECCEEurope.2017.8099226.
  - BibTeX
  - Link
  @inproceedings{8099226, author = {Schuster, J. and Schenkyr, M. and Roth-Stielow, J.}, booktitle = {2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)}, doi = {10.23919/EPE17ECCEEurope.2017.8099226}, month = {Sept}, pages = {P.1-P.10}, title = {A comparison of two methods for sensorless position estimation using the electromagnetic force at an electrically excited synchronous machine}, url = {https://doi.org/10.23919/EPE17ECCEEurope.2017.8099226}, year = 2017 }
10. Stempfle, M., Nitzsche, M., Woelfle, J., Zehelein, M., Xu, X., Roth-Stielow, J.: Simple but accurate loss modelling of an IPMSM considering harmonic losses and saturation effects. In: International Electric Machines and Drives Conference (IEMDC) - Miami, USA. IEEE (2017). https://doi.org/10.1109/iemdc.2017.8002071.
  - BibTeX
  - Link
  @inproceedings{Stempfle_2017, author = {Stempfle, Martin and Nitzsche, Maximilian and Woelfle, Julian and Zehelein, Matthias and Xu, Xiaolei and Roth-Stielow, Jorg}, booktitle = {International Electric Machines and Drives Conference ({IEMDC}) - Miami, USA}, doi = {10.1109/iemdc.2017.8002071}, month = may, publisher = {{IEEE}}, title = {Simple but accurate loss modelling of an {IPMSM} considering harmonic losses and saturation effects}, url = {https://doi.org/10.1109%2Fiemdc.2017.8002071}, year = 2017 }
11. Wölfle, J., Nitzsche, M., Tröster, N., Ruthardt, J., Stempfle, M., Roth-Stielow, J.: Combination of two variables in a junction temperature control system to elongate the expected lifetime of IGBT-power-modules. In: 2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS). pp. 41–47 (2017). https://doi.org/10.1109/PEDS.2017.8289130.
  - BibTeX
  - Link
  @inproceedings{8289130, author = {Wölfle, J. and Nitzsche, M. and Tröster, N. and Ruthardt, J. and Stempfle, M. and Roth-Stielow, J.}, booktitle = {2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)}, doi = {10.1109/PEDS.2017.8289130}, month = dec, pages = {41-47}, title = {Combination of two variables in a junction temperature control system to elongate the expected lifetime of IGBT-power-modules}, url = {https://doi.org/10.1109/PEDS.2017.8289130}, year = 2017 }
12. Troester, N., Bura, D., Woelfle, J., Stempfle, M., Roth-Stielow, J.: Design of a 300 Amps Pulsed Current Source with Slopes up to 27 Amps per Nanosecond for Current Probe Analysis. In: PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–6 (2017).
  - BibTeX
  @inproceedings{7990694, abstract = {This paper presents the design of a pulsed current source. The topology consists of fast switching silicon carbide semiconductor devices and a low commutation inductance in order to create current impulses with very fast rising and falling slopes up to 27 amps per nanosecond. The current impulses with amplitudes up to 300 amps are typical current forms in power electronics circuits in the commutation path. Therefore, this current form is suitable to analyze current probes designed for measuring fast current slopes during a switching operation in a power electronic circuit.}, author = {Troester, N. and Bura, D. and Woelfle, J. and Stempfle, M. and Roth-Stielow, J.}, booktitle = {PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, month = may, pages = {1-6}, title = {Design of a 300 Amps Pulsed Current Source with Slopes up to 27 Amps per Nanosecond for Current Probe Analysis}, year = 2017 }
13. Tröster, N., Wölfle, J., Ruthardt, J., Roth-Stielow, J.: High bandwidth current sensor with a low insertion inductance based on the HOKA principle. In: 2017 19th European Conference on Power Electronics and Applications (EPE’17 ECCE Europe). p. P.1-P.9. IEEE (2017). https://doi.org/10.23919/EPE17ECCEEurope.2017.8099003.
  - BibTeX
  - Link
  @inproceedings{8099003, author = {Tröster, N. and Wölfle, J. and Ruthardt, J. and Roth-Stielow, J.}, booktitle = {2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)}, doi = {10.23919/EPE17ECCEEurope.2017.8099003}, month = {Sept}, pages = {P.1-P.9}, publisher = {IEEE}, title = {High bandwidth current sensor with a low insertion inductance based on the HOKA principle}, url = {https://doi.org/10.23919/EPE17ECCEEurope.2017.8099003}, year = 2017 }
14. Ruthardt, J., Woelfle, J., Zehelein, M., Roth-Stielow, J.: A New Modulation Technique to Control the Switching Losses for Single Phase Three-Level Active-Neutral-Point-Clamped-Inverters. In: PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–8 (2017).
  - BibTeX
  @inproceedings{7990878, abstract = {The lifetime of power semiconductor devices significantly depends on the thermal stress they are exposed to. In three-level active-neutral-pointclamped (ANPC) inverters the power losses - and with those the junction temperatures - are very unbalanced using conventional modulation techniques. In this paper a new modulation technique is proposed to spread the power losses across the semiconductor devices. This new modulation technique is a hybridization of the two mainly used pulse-width-modulation (PWM) techniques for ANPC-inverters. Compared with the commonly used PWM techniques the thermal stress the semiconductor devices are exposed to decreases.}, author = {Ruthardt, J. and Woelfle, J. and Zehelein, M. and Roth-Stielow, J.}, booktitle = {PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, month = may, pages = {1-8}, title = {A New Modulation Technique to Control the Switching Losses for Single Phase Three-Level Active-Neutral-Point-Clamped-Inverters}, year = 2017 }
2016
1. Moench, S., Costa, M.S., Barner, A., Weimer, J., Holz, R., Schwindt, E., Zehelein, M., Roth-Stielow, J., Kallfass, I.: High thermal conductance AlN power module with hybrid integrated gate drivers and SiC trench MOSFETs for 2 kW single-phase PV inverter. In: 2016 18th European Conference on Power Electronics and Applications (EPE16 ECCE Europe) - Karlsruhe, Germany. IEEE (2016). https://doi.org/10.1109/epe.2016.7695468.
  - BibTeX
  - Link
  @inproceedings{Moench_2016, author = {Moench, Stefan and Costa, Marco Salvatore and Barner, Alexander and Weimer, Julian and Holz, Rainer and Schwindt, Emilia and Zehelein, Matthias and Roth-Stielow, Jorg and Kallfass, Ingmar}, booktitle = {2016 18th European Conference on Power Electronics and Applications ({EPE}16 {ECCE} Europe) - Karlsruhe, Germany}, doi = {10.1109/epe.2016.7695468}, month = sep, publisher = {{IEEE}}, title = {High thermal conductance {AlN} power module with hybrid integrated gate drivers and {SiC} trench {MOSFETs} for 2 {kW} single-phase {PV} inverter}, url = {https://doi.org/10.1109%2Fepe.2016.7695468}, year = 2016 }
2. Stempfle, M., Bintz, S., Wölfle, J., Roth-Stielow, J.: Adaptive closed-loop state control system for a three-level neutral-point-clamped Z-source inverter. IET Electrical Systems in Transportation. 6, 12–19 (2016). https://doi.org/10.1049/iet-est.2015.0010.
  - BibTeX
  - Link
  @article{7422178, abstract = {Z-source inverter (ZSI) combines the electrical function of a DC/DC converter and a three-phase inverter. This study deals with a three-level neutral-point-clamped (NPC) ZSI which brings an additional electrical potential. The benefit is the lower output current ripple of each phase. Due to the non-linear behaviour of the Z-source control path, designing an accurate and especially a dynamic control can be challenging. This study presents a design of an adaptive control for a three-level NPC ZSI to fulfil the previously mentioned goals. The correct functionality of the control system is underlined with measurements at different operating points. A possible application field for three-level ZSIs are hybrid and electric vehicles.}, author = {Stempfle, M. and Bintz, S. and Wölfle, J. and Roth-Stielow, J.}, doi = {10.1049/iet-est.2015.0010}, issn = {2042-9738}, journal = {IET Electrical Systems in Transportation}, number = 1, pages = {12-19}, title = {Adaptive closed-loop state control system for a three-level neutral-point-clamped Z-source inverter}, url = {https://doi.org/10.1049/iet-est.2015.0010}, volume = 6, year = 2016 }
3. Wolfle, J., Nitzsche, M., Weimer, J., Stempfle, M., Roth-Stielow, J.: Temperature control system using a hybrid discontinuous modulation technique to improve the lifetime of IGBT power modules. In: 2016 18th European Conference on Power Electronics and Applications (EPE16 ECCE Europe) - Karlsruhe, Germany. IEEE (2016). https://doi.org/10.1109/epe.2016.7695403.
  - BibTeX
  - Link
  @inproceedings{Wolfle_2016, author = {Wolfle, J. and Nitzsche, M. and Weimer, J. and Stempfle, M. and Roth-Stielow, J.}, booktitle = {2016 18th European Conference on Power Electronics and Applications ({EPE}16 {ECCE} Europe) - Karlsruhe, Germany}, doi = {10.1109/epe.2016.7695403}, month = sep, publisher = {IEEE}, title = {Temperature control system using a hybrid discontinuous modulation technique to improve the lifetime of {IGBT} power modules}, url = {https://doi.org/10.1109%2Fepe.2016.7695403}, year = 2016 }
4. Renaudineau, H., Kouro, S., Schaible, K., Zehelein, M.: Flyback-based sub-module PV microinverter. In: 2016 18th European Conference on Power Electronics and Applications (EPE16 ECCE Europe) - Karlsruhe, Germany. pp. 1–9. IEEE (2016). https://doi.org/10.1109/EPE.2016.7695427.
  - BibTeX
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  @inproceedings{7695427, abstract = {This paper proposes sub-module integration of a photovoltaic (PV) microinverter. It is proposed to remove the existing junction box and replace the by-pass diodes with individual DC-DC converters connected to a single-phase inverter. Particular attention is given to systems operating under long-term non-uniform conditions, such as snow or dust accumulation. A comparison with a classical two-stage interleaved-flyback microinverter is provided to analyze the performance and to quantify the improvements of the proposed structure.}, author = {Renaudineau, H. and Kouro, S. and Schaible, K. and Zehelein, Matthias}, booktitle = {2016 18th European Conference on Power Electronics and Applications ({EPE}16 {ECCE} Europe) - Karlsruhe, Germany}, doi = {10.1109/EPE.2016.7695427}, month = {Sept}, pages = {1-9}, publisher = {IEEE}, title = {Flyback-based sub-module PV microinverter}, url = {https://ieeexplore.ieee.org/document/7695427/}, year = 2016 }
5. Stempfle, M., Fischer, M., Nitzsche, M., Wolfle, J., Roth-Stielow, J.: Efficiency analysis of three-level NPC and T-Type voltage source inverter for various operation modes optimizing the overall drive train efficiency by an operating mode selection. In: 2016 18th European Conference on Power Electronics and Applications (EPE16 ECCE Europe) - Karlsruhe, Germany. IEEE (2016). https://doi.org/10.1109/epe.2016.7695368.
  - BibTeX
  - Link
  @inproceedings{Stempfle_2016, author = {Stempfle, M. and Fischer, M. and Nitzsche, M. and Wolfle, J. and Roth-Stielow, J.}, booktitle = {2016 18th European Conference on Power Electronics and Applications ({EPE}16 {ECCE} Europe) - Karlsruhe, Germany}, doi = {10.1109/epe.2016.7695368}, month = sep, publisher = {IEEE}, title = {Efficiency analysis of three-level NPC and T-Type voltage source inverter for various operation modes optimizing the overall drive train efficiency by an operating mode selection}, url = {https://doi.org/10.1109%2Fepe.2016.7695368}, year = 2016 }
6. Troester, N., Beilharz, D., Roth-Stielow, J.: A novel algorithm for position estimation in coreless current measurement applications. In: 2016 18th European Conference on Power Electronics and Applications (EPE16 ECCE Europe) - Karlsruhe, Germany. pp. 1–9 (2016). https://doi.org/10.1109/EPE.2016.7695598.
  - BibTeX
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  @inproceedings{7695598, abstract = {This paper presents a novel algorithm to measure current without a flux concentrating ferromagnetic core enclosing the current carrying conductor. First the algorithm is presented; the algorithm requires three magnetic field sensors around the circular conductor. The information about the magnetic field is used to estimate the position of the conductor and to calculate the current to be measured. Second measurements are presented to verify the concept.}, author = {Troester, N. and Beilharz, D. and Roth-Stielow, J.}, booktitle = {2016 18th European Conference on Power Electronics and Applications ({EPE}16 {ECCE} Europe) - Karlsruhe, Germany}, doi = {10.1109/EPE.2016.7695598}, month = {Sept}, pages = {1-9}, title = {A novel algorithm for position estimation in coreless current measurement applications}, url = {https://doi.org/10.1109/EPE.2016.7695598}, year = 2016 }
7. Blank, F., Röser, T., Zehelein, M., Roth-Stielow, J.: Minimierung der Verluste im Antriebssystem mit Hilfe numerisch optimierter Trajektorien. In: gGmbH, S.P. (ed.) 2016 Fortschritte in der Antriebs- und Automatisierungstechnik (FAA Kongress) - Stuttgart. Stuttgarter Produktionsakademie gGmbH (2016).
  - BibTeX
  @inproceedings{blank2016minimierung, author = {Blank, Frederic and Röser, Tobias and Zehelein, Matthias and Roth-Stielow, Jörg}, booktitle = {2016 Fortschritte in der Antriebs- und Automatisierungstechnik (FAA Kongress) - Stuttgart}, editor = {gGmbH, Stuttgarter Produktionsakademie}, publisher = {Stuttgarter Produktionsakademie gGmbH }, title = {Minimierung der Verluste im Antriebssystem mit Hilfe numerisch optimierter Trajektorien}, year = 2016 }
8. Zehelein, M., Moench, S., Costa, M.S., Barner, A., Roth-Stielow, J.: Control strategy for a parallel active buffer circuit in a single-phase-inverter. In: 2016 18th European Conference on Power Electronics and Applications (EPE’16 ECCE Europe). pp. 1–10 (2016). https://doi.org/10.1109/EPE.2016.7695359.
  - BibTeX
  - Link
  @inproceedings{7695359, abstract = {This paper presents a control strategy for a single-phase photovoltaic inverter, using a parallel active buffer circuit. The aim is to reduce the volume demand of the necessary capacitance for filtering the twice line frequency pulsating power. The pulsating power is stored in an additional buffer capacitor, which is decoupled from the input voltage by an active buffer circuit. Therefore a high voltage swing is possible. The control concept allows an independent operation of the parallel buffer circuit from the inverter circuit.}, author = {Zehelein, M. and Moench, S. and Costa, M. S. and Barner, A. and Roth-Stielow, J.}, booktitle = {2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)}, doi = {10.1109/EPE.2016.7695359}, month = {Sept}, pages = {1-10}, title = {Control strategy for a parallel active buffer circuit in a single-phase-inverter}, url = {https://doi.org/10.1109/EPE.2016.7695359}, year = 2016 }
2015
1. Wolfle, J., Roth-Stielow, J., Koller, O., Bertsche, B.: Control Method to Increase the Reliability of IGBT Power Modules Validated on a Three Phase Inverter. In: 2015 IEEE Vehicle Power and Propulsion Conference (VPPC). pp. 1–6 (2015). https://doi.org/10.1109/VPPC.2015.7352918.
  - BibTeX
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  @inproceedings{7352918, abstract = {This paper presents a junction temperature controller which increases the reliability of IGBT power modules in power electronic applications without affecting the demanded output power. Power electronic applications have to deal with varying load conditions. These varying load conditions lead to temperature swings which lead to mechanical stress of common IGBT power modules. At low load conditions the switching losses are increased by increasing the switching frequency. This leads to reduced temperature swings resulting in a higher reliability. The functionality of the control system is verified on a three phase two level inverter connected to a passive load.}, author = {Wolfle, J. and Roth-Stielow, J. and Koller, O. and Bertsche, B.}, booktitle = {2015 IEEE Vehicle Power and Propulsion Conference (VPPC)}, doi = {10.1109/VPPC.2015.7352918}, month = oct, pages = {1-6}, title = {Control Method to Increase the Reliability of IGBT Power Modules Validated on a Three Phase Inverter}, url = {https://doi.org/10.1109/VPPC.2015.7352918}, year = 2015 }
2. Lehmann, O., Nguyen, N.K., Schuster, J., Roth-Stielow, J.: Optimized sensorless DTC of PMSM for electric vehicles by using a switching command synchronized evaluation at standstill and low speed. In: 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia). pp. 1386–1393 (2015). https://doi.org/10.1109/ICPE.2015.7167960.
  - BibTeX
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  @inproceedings{7167960, abstract = {The “direct-torque-control” (DTC) is an alternative to the commonly used “field oriented control” (FOC) for the control of a PMSM. One advantage of the DTC is its inherent ability of sensorless control. However at standstill and low speed range the back-EMF based model has problems to detect the rotor position. The switching command synchronized evaluation (SCSE) calculates the rotor position using the current change during active voltage vectors. Realizations of the SCSE using the FOC are known, but the combination of the SCSE with a discrete-time DTC avoids problems with switching disturbances. The capability of the presented optimized DTC is proved with measurements on a test bench.}, author = {Lehmann, O. and Nguyen, N. K. and Schuster, J. and Roth-Stielow, J.}, booktitle = {2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)}, doi = {10.1109/ICPE.2015.7167960}, issn = {2150-6078}, month = {June}, pages = {1386-1393}, title = {Optimized sensorless DTC of PMSM for electric vehicles by using a switching command synchronized evaluation at standstill and low speed}, url = {https://doi.org/10.1109/ICPE.2015.7167960}, year = 2015 }
3. Stempfle, M., Fischer, M., Roth-Stielow, J.: Loss modelling to optimize the overall drive train efficiency. In: 2015 17th European Conference on Power Electronics and Applications (EPE’15 ECCE-Europe). pp. 1–10 (2015). https://doi.org/10.1109/EPE.2015.7309147.
  - BibTeX
  - Link
  @inproceedings{7309147, abstract = {For drive train efficiency estimation, loss models of the battery, an optional DC/DC converter, an inverter and the electrical machine are presented. Harmonic iron losses of the machine caused by current ripple are considered in order to evaluate various modulation strategies and switching frequencies of the inverter. Battery voltage optimizations are analysed regarding the overall drive train efficiency as well as the influence on different DC/DC converters.}, author = {Stempfle, M. and Fischer, M. and Roth-Stielow, J.}, booktitle = {2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)}, doi = {10.1109/EPE.2015.7309147}, month = {Sept}, pages = {1-10}, title = {Loss modelling to optimize the overall drive train efficiency}, url = {https://doi.org/10.1109/EPE.2015.7309147}, year = 2015 }
4. Wolfle, J., Lehmann, O., Roth-Stielow, J.: A novel control method to improve the reliability of traction inverters for permanent magnet synchronous machines. In: 2015 IEEE 11th International Conference on Power Electronics and Drive Systems. Institute of Electrical and Electronics Engineers (IEEE) (2015). https://doi.org/10.1109/peds.2015.7203573.
  - BibTeX
  - Link
  @inproceedings{Wolfle_2015, author = {Wolfle, Julian and Lehmann, Oliver and Roth-Stielow, Jorg}, booktitle = {2015 IEEE 11th International Conference on Power Electronics and Drive Systems}, doi = {10.1109/peds.2015.7203573}, month = jun, publisher = {Institute of Electrical and Electronics Engineers ({IEEE})}, title = {A novel control method to improve the reliability of traction inverters for permanent magnet synchronous machines}, url = {https://doi.org/10.1109%2Fpeds.2015.7203573}, year = 2015 }
5. Lehmann, O., Heintze, M., Nemec, C., Roth-Stielow, J.: Using a multiphase interleaved-switched inverter as power-hardware-in-the-loop machine emulator to test sensorless control techniques. In: Proceedings of PCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. pp. 1–8 (2015).
  - BibTeX
  @inproceedings{7149208, abstract = {This paper describes an optimized hardware setup for a power-hardware-in-the-loop machine emulator which allows the emulation of the magnetic anisotropy e.g. of a permanent magnet synchronous machine. This gives the opportunity to test various control systems which are beyond the common current and speed control, like sensorless control methods, on a machine emulator. Additionally, sophisticated test scenarios such as a step-shaped speed change, which hardly can be done on a test bench are able to be performed on a machine emulator. To obtain best results, several optimizations for an emulator setup are described. The performance of the presented emulator is verified by measurements conducted with an inverter-under-test, that uses the INFORM method and an EMF-model to track the rotor position sensorless.}, author = {Lehmann, O. and Heintze, M. and Nemec, C. and Roth-Stielow, J.}, booktitle = {Proceedings of PCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management}, month = may, pages = {1-8}, title = {Using a multiphase interleaved-switched inverter as power-hardware-in-the-loop machine emulator to test sensorless control techniques}, year = 2015 }
6. Nguyen, Q.K., Schuster, J., Roth-Stielow, J.: Energy optimal control of an electrically excited synchronous motor used as traction drive. In: 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia). pp. 2789–2795 (2015). https://doi.org/10.1109/ICPE.2015.7168165.
  - BibTeX
  - Link
  @inproceedings{7168165, abstract = {Due to the high power density the interior permanent magnet synchronous motors (IPMSM) are widely used as traction drives. However this machine principle has the disadvantage of low energy efficiency in high speed range. An alternative machine principle is the electrically excited synchronous motor (EESM). It enables an additional degree of freedom to control the motor torque efficiently. In this paper an energy efficient control is implemented for an EESM which is designed for the traction application.}, author = {Nguyen, Q. K. and Schuster, J. and Roth-Stielow, J.}, booktitle = {2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)}, doi = {10.1109/ICPE.2015.7168165}, issn = {2150-6078}, month = {June}, pages = {2789-2795}, title = {Energy optimal control of an electrically excited synchronous motor used as traction drive}, url = {https://doi.org/10.1109/ICPE.2015.7168165}, year = 2015 }
7. Wölfle, J.F., Roth-Stielow, J.: A hybrid discontinuous modulation technique to influence the switching losses of three phase inverters. In: 2015 17th European Conference on Power Electronics and Applications (EPE’15 ECCE-Europe). pp. 1–10 (2015). https://doi.org/10.1109/EPE.2015.7309145.
  - BibTeX
  - Link
  @inproceedings{7309145, abstract = {This paper presents a modulation technique, which combines the known space-vector-pulse-width-modulation (SVPWM) and the discontinuous-pulse-width-modulation (DPWM). This enables the possibility to set the switching losses freely within a certain border band. A possible area of application is the reliability of IGBT-inverters modules, where junction temperature swings can be reduced by influencing the power losses. The functionality is underlined by the analytical derivation of the switching and conduction mean power loss equations which are verified by measurements in certain operation points.}, author = {Wölfle, J. F. and Roth-Stielow, J.}, booktitle = {2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)}, doi = {10.1109/EPE.2015.7309145}, month = {Sept}, pages = {1-10}, title = {A hybrid discontinuous modulation technique to influence the switching losses of three phase inverters}, url = {https://doi.org/10.1109/EPE.2015.7309145}, year = 2015 }
8. Blank, F., Röser, T., Roth-Stielow, J.: Drive system loss minimizing trajectories using constrained non-linear optimization. In: 2015 IEEE 11th International Conference on Power Electronics and Drive Systems. pp. 986–991 (2015). https://doi.org/10.1109/PEDS.2015.7203394.
  - BibTeX
  - Link
  @inproceedings{7203394, abstract = {In various industry applications position controlled electrical drive systems fulfill rest-to-rest motions. The control systems reference position is given by trajectories. As the trajectories have an influence on the energy losses of the components, an optimized trajectory leads to a loss minimization of the system. Therefore, by using the loss models of the mechanical components, the electrical motor and power electronics developed before, a new trajectory is calculated. It is implemented with a constrained non-linear optimization algorithm. The approach is applied for a linear drive system under various conditions and the results are validated in measurements. It is shown that this minimizes the total losses of the system which can save around 5 % of energy, compared to other trajectories.}, author = {Blank, F. and Röser, T. and Roth-Stielow, J.}, booktitle = {2015 IEEE 11th International Conference on Power Electronics and Drive Systems}, doi = {10.1109/PEDS.2015.7203394}, issn = {2164-5256}, month = {June}, pages = {986-991}, title = {Drive system loss minimizing trajectories using constrained non-linear optimization}, url = {https://doi.org/10.1109/PEDS.2015.7203394}, year = 2015 }
2014
1. Schuster, J., Stempfle, M.: Leistungselektronische Topologien und Betriebsverfahren für die fremderregte Synchronmaschine. Beitrag zum Cluster Seminar, ECPE Nürnberg (2014).
  - BibTeX
  @proceedings{schuster2014leistungselektronische, author = {Schuster, Johannes and Stempfle, Martin}, eventtitle = {ECPE, Cluster Seminar 2014 - Nürnberg}, language = {Deutsch}, publisher = {Beitrag zum Cluster Seminar, ECPE Nürnberg}, title = {Leistungselektronische Topologien und Betriebsverfahren für die fremderregte Synchronmaschine }, year = 2014 }
2. Nguyen, Q.K., Petrich, M., Roth-Stielow, J.: Implementation of the MTPA and MTPV control with online parameter identification for a high speed IPMSM used as traction drive. In: 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA). pp. 318–323 (2014). https://doi.org/10.1109/IPEC.2014.6869600.
  - BibTeX
  - Link
  @inproceedings{6869600, abstract = {In this paper, the problem of how to implement the MTPA/MTPV control for an energy efficient operation of a high speed Interior Permanent Magnet Synchronous Motor (IPMSM) used as traction drive is considered. This control method depends on the inductances Ld, Lq, the flux linkage ΨPM and the stator resistance Rs which might vary during operation. The parameter variation causes miscalculation of the set point currents Id and Iq for the inner current control system and thus a wrong torque will be set. Consequently the IPMSM will not be operating in the optimal operation point which yields to a reduction of the total energy efficiency and the performance. As a consequence, this paper proposes the implementation of the the Recursive Least Square Estimation (RLS) for a high speed and high performance IPMSM. With this online identification method the variable parameters are estimated and adapted to the MTPA and MTPV control strategy.}, author = {Nguyen, Q. K. and Petrich, M. and Roth-Stielow, J.}, booktitle = {2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)}, doi = {10.1109/IPEC.2014.6869600}, issn = {2150-6078}, month = may, pages = {318-323}, title = {Implementation of the MTPA and MTPV control with online parameter identification for a high speed IPMSM used as traction drive}, url = {https://doi.org/10.1109/IPEC.2014.6869600}, year = 2014 }
3. Lehmann, O., Schuster, J., Roth-Stielow, J.: Sensorless Control Techniques as Redundancy for the Control of Permanent Magnet Synchronous Machines in Electric Vehicles. In: 2014 IEEE Vehicle Power and Propulsion Conference (VPPC). pp. 1–6 (2014). https://doi.org/10.1109/VPPC.2014.7007127.
  - BibTeX
  @inproceedings{7007127, abstract = {For the field oriented current control of permanent magnet synchronous machines in electric vehicles the knowledge of the rotor position is necessary. The position information is typically measured with a resolver. Therefore a failure of this resolver is critical. This paper describes several possibilities to use sensorless control techniques as redundancy to a resolver with the focus on the requirements for the use in electric vehicles.}, author = {Lehmann, O. and Schuster, J. and Roth-Stielow, J.}, booktitle = {2014 IEEE Vehicle Power and Propulsion Conference (VPPC)}, doi = {10.1109/VPPC.2014.7007127}, issn = {1938-8756}, month = oct, pages = {1-6}, title = {Sensorless Control Techniques as Redundancy for the Control of Permanent Magnet Synchronous Machines in Electric Vehicles}, year = 2014 }
4. Nguyen, Q.K., Roth-Stielow, J.: Analysis and Modelling of the Losses for the Electrical Drive System of an Electric Vehicle. In: 2014 IEEE Vehicle Power and Propulsion Conference (VPPC). pp. 1–6 (2014). https://doi.org/10.1109/VPPC.2014.7007018.
  - BibTeX
  @inproceedings{7007018, abstract = {In this paper the losses of the electrical drive system for electrical vehicles (EV) are investigated and modelled. For this, the individual losses of the two main components, the voltage source inverter (VSI) and the Interior Permanent Magnet Synchronous Machine (IPMSM), are analysed and modelled. This model considers the parameter variation and the dependency on the operating point of the IPMSM. Using multiple linear regression, an approximation equation is found which describes accurately the total loss of the VSI. Hence it enables to determine the losses accurately by simulation.}, author = {Nguyen, Q. K. and Roth-Stielow, J.}, booktitle = {2014 IEEE Vehicle Power and Propulsion Conference (VPPC)}, doi = {10.1109/VPPC.2014.7007018}, issn = {1938-8756}, month = oct, pages = {1-6}, title = {Analysis and Modelling of the Losses for the Electrical Drive System of an Electric Vehicle}, year = 2014 }
5. Schuster, J., Lehmann, O., Roth-Stielow, J.: Geberfreie Positionserfassung einer fremderregten Synchronmaschine durch eine Auswertung der Schwankungsbreite des Erregerstroms. In: 2014 SPS/IPC/Drives - Nürnberg. pp. 395–402. Apprimus Verlag, Aachen (2014).
  - BibTeX
  @inproceedings{schuster2014geberfreie, author = {Schuster, Johannes and Lehmann, Oliver and Roth-Stielow, Jörg}, booktitle = {2014 SPS/IPC/Drives - Nürnberg}, isbn = {978-3-86359-272-1}, pages = {395 - 402}, publisher = {Apprimus Verlag, Aachen}, title = {Geberfreie Positionserfassung einer fremderregten Synchronmaschine durch eine Auswertung der Schwankungsbreite des Erregerstroms}, year = 2014 }
6. Blank, F., Roth-Stielow, J.: Development and verification of energy-accurate simulation models for permanent magnet synchronous motors in automation systems. In: 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA). pp. 264–269 (2014). https://doi.org/10.1109/IPEC.2014.6869591.
  - BibTeX
  @inproceedings{6869591, abstract = {In order to evaluate the energy efficiency of electrical drive systems for automation, simulations are made. For this purpose energy-accurate models are needed, which include all significant losses. The development and verification of an optimized simulation model for a permanent magnet synchronous motor with a nominal power of 1 kW is presented in this paper, using measurements in different operating points. It is not necessary to know the design data of the motor or finite-element-models for this. Influences are analyzed and the model is verified using measurements and statistical methods. With the help of the presented method, simulation models can be developed to compare the energy efficiency of different motors application dependent and therefore save energy.}, author = {Blank, F. and Roth-Stielow, J.}, booktitle = {2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)}, doi = {10.1109/IPEC.2014.6869591}, issn = {2150-6078}, month = may, pages = {264-269}, title = {Development and verification of energy-accurate simulation models for permanent magnet synchronous motors in automation systems}, year = 2014 }
7. Lehmann, O., Zehelein, M., Schuster, J., Roth-Stielow, J.: A comparison of different sensorless position acquisition methods at low speeds for a permanent magnet synchronous machine in vehicle applications. In: 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA). IEEE (2014). https://doi.org/10.1109/ipec.2014.6870125.
  - BibTeX
  - Link
  @inproceedings{IPEC_Lehmann_2014, author = {Lehmann, Oliver and Zehelein, Matthias and Schuster, Johannes and Roth-Stielow, Jorg}, booktitle = {2014 International Power Electronics Conference ({IPEC}-Hiroshima 2014 - {ECCE} {ASIA})}, doi = {10.1109/ipec.2014.6870125}, month = may, publisher = {IEEE}, title = {A comparison of different sensorless position acquisition methods at low speeds for a permanent magnet synchronous machine in vehicle applications}, url = {https://doi.org/10.1109%2Fipec.2014.6870125}, year = 2014 }
2013
1. Nemec, C., Lehmann, O., Heintze, M., Roth-Stielow, J.: Optimal inductor setup for a power-hardware-in-the-loop machine emulator. In: 2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS). pp. 364–369 (2013). https://doi.org/10.1109/PEDS.2013.6527045.
  - BibTeX
  @inproceedings{6527045, abstract = {This paper presents investigations on the setup of the power electronic stage within a power-hardware-in-the-loop machine emulator. The emulator draws currents from a drive inverter, equivalent to a real electrical machine, by a setup of a multi-phase interleaved-switched inverter coupled by inductors. The choice of these inductors is essential for the functionality of the emulator and thus is investigated. The influences of the inductor setup on the emulator's output currents slew rate as well as their ripple are worked out with respect to the desired application. Based on these results, an optimal inductor setup consisting of magnetically coupled inductors is extracted by using a control block diagram of the topology. As a result, the necessary control of the interleaved-switched inverter is unburdened.}, author = {Nemec, C. and Lehmann, O. and Heintze, M. and Roth-Stielow, J.}, booktitle = {2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS)}, doi = {10.1109/PEDS.2013.6527045}, issn = {2164-5256}, month = {April}, pages = {364-369}, title = {Optimal inductor setup for a power-hardware-in-the-loop machine emulator}, year = 2013 }
2. Nemec, C., Wolfle, J., Nitzsche, M., Roth-Stielow, J.: Handling of disturbance variables within a multi-phase interleaved-switched inverter by a discrete-time decoupling network. In: 15th European Conference on Power Electronics and Applications (EPE) - Lille, France. IEEE (2013). https://doi.org/10.1109/epe.2013.6634464.
  - BibTeX
  - Link
  @inproceedings{Nemec_2013, author = {Nemec, Christian and Wolfle, Julian and Nitzsche, Maximilian and Roth-Stielow, Jorg}, booktitle = {15th European Conference on Power Electronics and Applications (EPE) - Lille, France}, doi = {10.1109/epe.2013.6634464}, month = sep, publisher = {IEEE}, title = {Handling of disturbance variables within a multi-phase interleaved-switched inverter by a discrete-time decoupling network}, url = {https://doi.org/10.1109%2Fepe.2013.6634464}, year = 2013 }

Publikationen

Veröffentlichungen am Institut für Leistungselektronik und Elektrische Antriebe

2019

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2014

2013