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511 Publications
2022 | Conference Paper | LibreCat-ID: 32796
Böcker, Joachim. “Concept Study of an LLC Converter with Magnetically Resonant Inductor.” In 2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2022. https://doi.org/10.1109/speedam53979.2022.9842047.
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2022 | Journal Article | LibreCat-ID: 33459
Brosch, Anian, Oliver Wallscheid, and Joachim Böcker. “Long-Term Memory Recursive Least Squares Online Identification of Highly Utilized Permanent Magnet Synchronous Motors for Finite-Control-Set Model Predictive Control.” IEEE Transactions on Power Electronics, 2022. https://doi.org/10.1109/tpel.2022.3206598.
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2022 | Conference Paper | LibreCat-ID: 33489
Lange, Jarren, Dominik Schmies, Karl Stephan Christian Stille, Joachim Böcker, and Oliver Wallscheid. “Experimental Comparison of FPGA-Implemented Model Predictive Voltage Control to Cascaded Proportional Resonant Control for a Three-Phase Four-Wire Three-Level Grid-Forming Inverter of 250 KVA.” In EPE’22 ECCE Europe. Hannover: IEEE, 2022.
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2022 | Conference Paper | LibreCat-ID: 35125
Förster, Nikolas, Philipp Rehlaender, Oliver Wallscheid, Frank Schafmeister, and Joachim Böcker. “An Open-Source Transistor Database and Toolbox as a Unified Software Engineering Tool for Managing and Evaluating Power Transistors.” In 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2022. https://doi.org/10.1109/apec43599.2022.9773701.
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2022 | Conference Paper | LibreCat-ID: 35127
Förster, Nikolas, Till Piepenbrock, Philipp Rehlaender, Oliver Wallscheid, Frank Schafmeister, and Joachim Böcker. “An Open-Source FEM Magnetics Toolbox for Power Electronic Magnetic Components.” In PCIM Europe 2022; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 1–10, 2022. https://doi.org/10.30420/565822103.
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2022 | Journal Article | LibreCat-ID: 34065
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Thermal Neural Networks: Lumped-Parameter Thermal Modeling with State-Space Machine Learning.” Engineering Applications of Artificial Intelligence 117 (2022). https://doi.org/10.1016/j.engappai.2022.105537.
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2022 | Conference Paper | LibreCat-ID: 32859
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Learning Thermal Properties and Temperature Models of Electric Motors with Neural Ordinary Differential Equations.” In 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia). IEEE, 2022. https://doi.org/10.23919/ipec-himeji2022-ecce53331.2022.9807209.
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2022 | Journal Article | LibreCat-ID: 44163
Rehlaender, Philipp, Oliver Wallscheid, Frank Schafmeister, and Joachim Böcker. “LLC Resonant Converter Modulations for Reduced Junction Temperatures in Half-Bridge Mode and Transformer Flux in the On-the-Fly Morphing Thereto.” IEEE Transactions on Power Electronics 37, no. 11 (2022): 13413–27. https://doi.org/10.1109/tpel.2022.3180758.
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2022 | Conference Paper | LibreCat-ID: 42894
Kirchgässner, Wilhelm, Daniel Wöckinger, Oliver Wallscheid, Gerd Bramerdorfer, and Joachim Böcker. “Application of Thermal Neural Networks on a Small-Scale Electric Motor.” In IKMT 2022; 13. GMM/ETG-Symposium, 1–6, 2022.
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2022 | Conference Paper | LibreCat-ID: 44164
Rehlaender, Philipp, Bastian Korthauer, Frank Schafmeister, and Joachim Böcker. “Experimental Demonstration of a 2.2kW Active-Clamp Converter for High-Current Wide-Voltage-Transfer Ratio Applications.” In 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), P.1-P.11, 2022.
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2022 | Conference Paper | LibreCat-ID: 44161
Rehlaender, Philipp, Frank Schafmeister, and Joachim Böcker. “Phase-Shift Modulation for Flying-Capacitor DC-DC Converters.” In 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), 1–9, 2022.
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2022 | Journal Article | LibreCat-ID: 31085
Brosch, Anian, Johann Rauhaus, Oliver Wallscheid, Joachim Böcker, and Detmar Zimmer. “Data-Driven Adaptive Torque Oscillation Compensation for Multi-Motor Drive Systems.” IEEE Open Journal of Industry Applications, 2022. https://doi.org/10.1109/ojia.2022.3171333.
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2022 | Dissertation | LibreCat-ID: 44230
Hagemeyer, Marc. Untersuchung und Entwicklung eines modularen speicherbasierten Schweißstromgenerators mit geringster Stromschwankungsbreite für das Widerstandsschweißen, 2022. https://doi.org/10.17619/UNIPB/1-1582.
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2022 | Conference Paper | LibreCat-ID: 34176
Unruh, Roland, Frank Schafmeister, and Joachim Böcker. “Zero-Sequence Voltage Reduces DC-Link Capacitor Demand in Cascaded H-Bridge Converters for Large-Scale Electrolyzers by 40%.” In 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe). IEEE, 2022.
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2022 | Conference Paper | LibreCat-ID: 35126
Förster, Nikolas, Jonas Hölscher, Till Piepenbrock, Philipp Rehlaender, Oliver Wallscheid, Frank Schafmeister, and Joachim Böcker. “An Open-Source FEM Magnetic Toolbox for Calculating Electric and Thermal Behavior of Power Electronic Magnetic Components.” In 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), P.1-P.9, 2022.
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2021 | Book | LibreCat-ID: 29876
Schröder, Dierk, and Joachim Böcker. Elektrische Antriebe – Regelung von Antriebssystemen. 5th ed. Springer Nature, 2021. https://doi.org/10.1007/978-3-662-62700-6.
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2021 | Conference Paper | LibreCat-ID: 29849
Strothmann, Benjamin, Frank Schafmeister, and Joachim Böcker. “Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger.” In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. https://doi.org/10.1109/apec42165.2021.9487462.
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2021 | Journal Article | LibreCat-ID: 29657
Brosch, Anian, Oliver Wallscheid, and Joachim Böcker. “Model Predictive Control of Permanent Magnet Synchronous Motors in the Overmodulation Region Including Six-Step Operation.” IEEE Open Journal of Industry Applications 2 (2021): 47–63. https://doi.org/10.1109/OJIA.2021.3066105.
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2021 | Conference Paper | LibreCat-ID: 29663
Gedlu, Emebet Gebeyehu, Oliver Wallscheid, and Joachim Böcker. “Temperature Estimation of Electric Machines Using a Hybrid Model of Feed-Forward Neural and Low-Order Lumped-Parameter Thermal Networks.” In 2021 IEEE International Electric Machines & Drives Conference (IEMDC), 1–8, 2021. https://doi.org/10.1109/IEMDC47953.2021.9449548.
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2021 | Journal Article | LibreCat-ID: 29892
Rehlaender, Philipp, Frank Schafmeister, and Joachim Böcker. “Interleaved Single-Stage LLC Converter Design Utilizing Half- and Full-Bridge Configurations for Wide Voltage Transfer Ratio Applications.” IEEE Transactions on Power Electronics 36, no. 9 (2021): 10065–80. https://doi.org/10.1109/tpel.2021.3067843.
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2021 | Conference Paper | LibreCat-ID: 29895
Korthauer, Bastian, Philipp Rehlaender, Frank Schafmeister, and Joachim Böcker. “Design and Analysis of a Regenerative Snubber for a 2.2 KW Active-Clamp Forward Converter with Low-Voltage Output.” In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. https://doi.org/10.1109/apec42165.2021.9487130.
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2021 | Journal Article | LibreCat-ID: 22162
Book, Gerrit, Arne Traue, Praneeth Balakrishna, Anian Brosch, Maximilian Schenke, Sören Hanke, Wilhelm Kirchgässner, and Oliver Wallscheid. “Transferring Online Reinforcement Learning for Electric Motor Control From Simulation to Real-World Experiments.” IEEE Open Journal of Power Electronics, 2021, 187–201. https://doi.org/10.1109/ojpel.2021.3065877.
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2021 | Journal Article | LibreCat-ID: 29653
Weber, Daniel, Stefan Heid, Henrik Bode, Jarren Lange, Eyke Hüllermeier, and Oliver Wallscheid. “Safe Bayesian Optimization for Data-Driven Power Electronics Control Design in Microgrids: From Simulations to Real-World Experiments.” IEEE Access 9 (2021): 35654–35669. https://doi.org/10.1109/ACCESS.2021.3062144.
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2021 | Conference Paper | LibreCat-ID: 29850
Strothmann, Benjamin, Gerrit Book, Frank Schafmeister, and Joachim Böcker. “Single-Phase Operation of Common-Mode-Free Bidirectional Three-Phase PFC-Rectifier for Non-Isolated EV Charger with Minimized DC-Link.” In PCIM Europe Digital Days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 1–8, 2021.
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2021 | Conference Paper | LibreCat-ID: 29871
Urbaneck, Daniel, Philipp Rehlaender, Joachim Böcker, and Frank Schafmeister. “LLC Converter in Capacitive Operation Utilizing ZCS for IGBTs – Theory, Concept and Verification of a 2 KW DC-DC Converter for EVs.” In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), 2021.
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2021 | Journal Article | LibreCat-ID: 30030
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Accurate Torque Control for Induction Motors by Utilizing a Globally Optimized Flux Observer.” IEEE Transactions on Power Electronics 36, no. 11 (2021): 13261–74. https://doi.org/10.1109/tpel.2021.3080129.
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2021 | Conference Paper | LibreCat-ID: 30031
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Accurate Torque Estimation for Induction Motors by Utilizing a Hybrid Machine Learning Approach.” In 2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC). IEEE, 2021. https://doi.org/10.1109/pemc48073.2021.9432615.
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2021 | Conference Paper | LibreCat-ID: 30029
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Combined Electrical-Thermal Gray-Box Model and Parameter Identification of an Induction Motor.” In IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2021. https://doi.org/10.1109/iecon48115.2021.9589225.
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2021 | Conference Paper | LibreCat-ID: 30032
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Gray-Box Loss Model for Induction Motor Drives.” In 2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC). IEEE, 2021. https://doi.org/10.1109/pemc48073.2021.9432491.
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2021 | Conference Paper | LibreCat-ID: 29665
Hanke, Sören, Oliver Wallscheid, and Joachim Böcker. “Comparison of Artificial Neural Network and Least Squares Prediction Models for Finite-Control-Set Model Predictive Control of a Permanent Magnet Synchronous Motor.” IET Digital Library, 2021. https://doi.org/10.1049%2Ficp.2021.1122.
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2021 | Journal Article | LibreCat-ID: 29664
Wallscheid, Oliver. “Thermal Monitoring of Electric Motors: State-of-the-Art Review and Future Challenges.” IEEE Open Journal of Industry Applications, 2021.
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2021 | Journal Article | LibreCat-ID: 21251
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Data-Driven Permanent Magnet Temperature Estimation in Synchronous Motors with Supervised Machine Learning: A Benchmark.” IEEE Transactions on Energy Conversion 36, no. 3 (2021): 2059–67. https://doi.org/10.1109/tec.2021.3052546.
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2021 | Journal Article | LibreCat-ID: 21254
Balakrishna, Praneeth, Gerrit Book, Wilhelm Kirchgässner, Maximilian Schenke, Arne Traue, and Oliver Wallscheid. “Gym-Electric-Motor (GEM): A Python Toolbox for the Simulation of Electric Drive Systems.” Journal of Open Source Software, 2021. https://doi.org/10.21105/joss.02498.
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2021 | Journal Article | LibreCat-ID: 25031
Schenke, Maximilian, and Oliver Wallscheid. “A Deep Q-Learning Direct Torque Controller for Permanent Magnet Synchronous Motors.” IEEE Open Journal of the Industrial Electronics Society, 2021, 388–400. https://doi.org/10.1109/ojies.2021.3075521.
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2021 | Journal Article | LibreCat-ID: 29662
Schenke, Maximilian, and Oliver Wallscheid. “Improved Exploring Starts by Kernel Density Estimation-Based State-Space Coverage Acceleration in Reinforcement Learning.” ArXiv Preprint ArXiv:2105.08990, 2021.
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2021 | Journal Article | LibreCat-ID: 21557
Brosch, Anian, Oliver Wallscheid, and Joachim Böcker. “Torque and Inductances Estimation for Finite Model Predictive Control of Highly Utilized Permanent Magnet Synchronous Motors.” IEEE Transactions on Industrial Informatics, 2021. https://doi.org/10.1109/tii.2021.3060469.
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2021 | Conference Paper | LibreCat-ID: 30340
Hagemeyer, Marc, Peter Wallmeier, Frank Schafmeister, and Joachim Böcker. “Comparison of Unidirectional Three- and Four-Wire Based Boost PFC-Rectifier Topologies for Non-Isolated Three-Phase EV On-Board Chargers under Common-Mode Aspects.” In Proc. 36th IEEE Applied Power Electronics Conference (APEC), 569–76. Phoenix, AZ, USA: IEEE, 2021.
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2021 | Newspaper Article | LibreCat-ID: 30348
Schafmeister, Frank. “Transformerless On-Board Chargers at Three- and Single-Phase Operation: Compensation of LF Common-Mode Noise by the Internal DC/DC-Stage.” Power System Design (PSD) Web Magazine, 2021.
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2021 | Dissertation | LibreCat-ID: 30849
Henkenius, Carsten. Entwurf netzfreundlicher Synchrongleichrichter mit integriertem Synchronwandler, 2021. https://doi.org/10.17619/UNIPB/1-1109.
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2021 | Conference Paper | LibreCat-ID: 29938
Unruh, Roland, Jarren Lange, Frank Schafmeister, and Joachim Böcker. “Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault Conditions.” In 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE, 2021. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542.
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2021 | Conference Paper | LibreCat-ID: 29899
Rehlaender, Philipp, Roland Unruh, Lars Hankeln, Frank Schafmeister, and Joachim Böcker. “Frequency-Doubler Modulation for Reduced Junction Temperatures for LLC Resonant Converters Operated in Half-Bridge Configuration.” In 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE, 2021. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570674.
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2021 | Preprint | LibreCat-ID: 29655
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Thermal Neural Networks: Lumped-Parameter Thermal Modeling With State-Space Machine Learning.” ArXiv Preprint ArXiv:2103.16323, 2021.
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2021 | Conference Paper | LibreCat-ID: 29893
Rehlaender, Philipp, Roland Unruh, Frank Schafmeister, and Joachim Böcker. “Alternating Asymmetrical Phase-Shift Modulation for Full-Bridge Converters with Balanced Switching Losses to Reduce Thermal Imbalances.” In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. https://doi.org/10.1109/apec42165.2021.9487104.
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2021 | Conference Paper | LibreCat-ID: 22218
Krauter, Stefan, Joachim Böcker, Christine Freitag, Burkhard Hehenkamp, Ulrich Hilleringmann, Katrin Temmen, Tobias Klaus, Nicolaus Rohrer, and Sven Lehmann. “Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung.” In Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021, 305–9. Pforzheim: Conexio, 2021.
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2020 | Journal Article | LibreCat-ID: 21252
Traue, Arne, Gerrit Book, Wilhelm Kirchgässner, and Oliver Wallscheid. “Toward a Reinforcement Learning Environment Toolbox for Intelligent Electric Motor Control.” IEEE Transactions on Neural Networks and Learning Systems, 2020, 1–10. https://doi.org/10.1109/tnnls.2020.3029573.
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2020 | Conference Paper | LibreCat-ID: 29884
Böcker, Joachim. “Analysis of the Magnetic Skin Effekt in Motors and Inductors.” In 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2020. https://doi.org/10.1109/speedam48782.2020.9161895.
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2020 | Journal Article | LibreCat-ID: 21250
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Estimating Electric Motor Temperatures with Deep Residual Machine Learning.” IEEE Transactions on Power Electronics 36, no. 7 (2020): 7480–88. https://doi.org/10.1109/tpel.2020.3045596.
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2020 | Conference Paper | LibreCat-ID: 29939
Unruh, Roland, Frank Schafmeister, and Joachim Böcker. “Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design.” In 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE, 2020. https://doi.org/10.23919/epe20ecceeurope43536.2020.9215687.
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2020 | Conference Paper | LibreCat-ID: 29894
Rehlaender, Philipp, Sergey Tikhonov, Frank Schafmeister, and Joachim Böcker. “Dual Interleaved 3.6 KW LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode as a Single-Stage Architecture of an Automotive On-Board DC-DC Converter.” In 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE, 2020. https://doi.org/10.23919/epe20ecceeurope43536.2020.9215736.
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2020 | Journal Article | LibreCat-ID: 21558
Brosch, Anian, Sören Hanke, Oliver Wallscheid, and Joachim Böcker. “Data-Driven Recursive Least Squares Estimation for Model Predictive Current Control of Permanent Magnet Synchronous Motors.” IEEE Transactions on Power Electronics, 2020, 2179–90. https://doi.org/10.1109/tpel.2020.3006779.
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