TY - BOOK AU - Böcker, Joachim ID - 41369 TI - Mechatronik und elektrische Antriebe / Mechatronics and electrical drives ER - TY - JOUR AU - Brosch, Anian AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 43456 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering SN - 0885-8993 TI - Time-Optimal Model Predictive Control of Permanent Magnet Synchronous Motors Considering Current and Torque Constraints ER - TY - JOUR AU - Brosch, Anian AU - Tinazzi, Fabio AU - Wallscheid, Oliver AU - Zigliotto, Mauro AU - Böcker, Joachim ID - 46147 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering SN - 0885-8993 TI - Finite Set Sensorless Control With Minimum a Priori Knowledge and Tuning Effort for Interior Permanent Magnet Synchronous Motors ER - TY - JOUR AU - Winkel, Fabian AU - Wallscheid, Oliver AU - Scholz, Peter AU - Böcker, Joachim ID - 48059 JF - IEEE Open Journal of the Industrial Electronics Society KW - Electrical and Electronic Engineering KW - Industrial and Manufacturing Engineering KW - Control and Systems Engineering SN - 2644-1284 TI - Pseudo-Labeling Machine Learning Algorithm for Predictive Maintenance of Relays ER - TY - JOUR AU - Winkel, Fabian AU - Deuse-Kleinsteuber, Johannes AU - Böcker, Joachim ID - 48058 JF - IEEE Transactions on Reliability KW - Electrical and Electronic Engineering KW - Safety KW - Risk KW - Reliability and Quality SN - 0018-9529 TI - Run-to-Failure Relay Dataset for Predictive Maintenance Research With Machine Learning ER - TY - CONF AB - Star-connected cascaded H-bridge Converters require large DC-link capacitors to buffer the second-order harmonic voltage ripple. First, it is analytically proven that the DC-link voltage ripple is proportional to the apparent converter power and does not depend on the power factor for nominal operation with sinusoidal reference arm voltages and currents. A third-harmonic zero-sequence voltage injection with an optimal amplitude and phase angle transforms the 2nd harmonic to a 4th harmonic DC-link voltage ripple. This reduces the voltage ripple by exactly 50% for all power factors at steady-state at balanced conditions. However, this requires 54% additional modules for unity power factor operation and even 100% for pure reactive power operation to account for the increased reference arm voltages due to the large amplitude of the optimal third-harmonic injection. If not enough modules are available, an adaptive discontinuous PWM is utilized to still minimize the voltage ripple for the given number of modules and power factor. With a very limited number of modules (modulation index is 1.15), the proposed method still reduces the DC-link voltage ripple by 24.4% for unity power factor operation. It requires the same number of modules as the commonly utilized 3rd harmonic injection with 1/6 of the grid voltage amplitude and achieves superior results. Simulations of a 10 kV/1 MVA system confirm the analysis. AU - Unruh, Roland AU - Böcker, Joachim AU - Schafmeister, Frank ID - 48352 KW - Cascaded H-Bridge KW - Solid-State Transformer KW - Capacitor voltage ripple KW - Zero sequence voltage KW - Third harmonic injection SN - 979-8-3503-1678-0 T2 - 2023 25th European Conference on Power Electronics and Applications (EPE'23 ECCE Europe) TI - An Optimized Third-Harmonic Injection Reduces DC-Link Voltage Ripple in Cascaded H-Bridge Converters up to 50% for all Power Factors ER - TY - CONF AU - Pena, Mario AU - Meyer, Michael AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 48093 T2 - 2023 IEEE International Electric Machines and Drives Conference (IEMDC) TI - Fade-Over Strategy for use of Model Predictive Direct Self-Control with Field-Oriented Control ER - TY - JOUR AU - Pena, Mario AU - Meyer, Michael AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 48092 IS - 10 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering SN - 0885-8993 TI - Model Predictive Direct Self-Control for Six-Step Operation of Permanent-Magnet Synchronous Machines VL - 38 ER - TY - CONF AU - Förster, Nikolas AU - Rehlaender, Philipp AU - Wallscheid, Oliver AU - Schafmeister, Frank AU - Böcker, Joachim ID - 30349 T2 - Proc. 37th IEEE Applied Power Electronics Conference (APEC) TI - An Open-Source Transistor Database and Toolbox as an Unified Software Engineering Tool for Managing and Evaluating Power Transistors ER - TY - CONF AU - Keuck, Lukas AU - Schafmeister, Frank AU - Böcker, Joachim ID - 30350 T2 - Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM) TI - Robust Hysteresis Control for LLC Resonant Converters Using a Fully Isolated Measurement Scheme ER - TY - JOUR AU - Brosch, Anian AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 34533 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering TI - Model Predictive Torque Control for Permanent Magnet Synchronous Motors Using a Stator-Fixed Harmonic Flux Reference Generator in the Entire Modulation Range ER - TY - CONF AU - Böcker, Joachim ID - 32796 T2 - 2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) TI - Concept Study of an LLC Converter with Magnetically Resonant Inductor ER - TY - JOUR AU - Brosch, Anian AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 33459 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering SN - 0885-8993 TI - Long-Term Memory Recursive Least Squares Online Identification of Highly Utilized Permanent Magnet Synchronous Motors for Finite-Control-Set Model Predictive Control ER - TY - CONF AU - Lange, Jarren AU - Schmies, Dominik AU - Stille, Karl Stephan Christian AU - Böcker, Joachim AU - Wallscheid, Oliver ID - 33489 T2 - EPE'22 ECCE Europe TI - 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 ER - TY - CONF AU - Stender, Marius AU - Becker, Marius AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 34299 T2 - 48th Annual Conference of the Industrial Electronics Society (IECON) TI - Adaptive Operating Strategy for Induction Motors Under Changing Electrical-Thermal Conditions ER - TY - CONF AU - Förster, Nikolas AU - Rehlaender, Philipp AU - Wallscheid, Oliver AU - Schafmeister, Frank AU - Böcker, Joachim ID - 35125 T2 - 2022 IEEE Applied Power Electronics Conference and Exposition (APEC) TI - An Open-Source Transistor Database and Toolbox as a Unified Software Engineering Tool for Managing and Evaluating Power Transistors ER - TY - CONF AU - Förster, Nikolas AU - Piepenbrock, Till AU - Rehlaender, Philipp AU - Wallscheid, Oliver AU - Schafmeister, Frank AU - Böcker, Joachim ID - 35127 T2 - PCIM Europe 2022; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management TI - An Open-Source FEM Magnetics Toolbox for Power Electronic Magnetic Components ER - TY - JOUR AU - Kirchgässner, Wilhelm AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 34065 JF - Engineering Applications of Artificial Intelligence SN - 0952-1976 TI - Thermal neural networks: Lumped-parameter thermal modeling with state-space machine learning VL - 117 ER - TY - CONF AU - Kirchgässner, Wilhelm AU - Wallscheid, Oliver AU - Böcker, Joachim ID - 32859 T2 - 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) TI - Learning Thermal Properties and Temperature Models of Electric Motors with Neural Ordinary Differential Equations ER - TY - JOUR AU - Rehlaender, Philipp AU - Wallscheid, Oliver AU - Schafmeister, Frank AU - Böcker, Joachim ID - 44163 IS - 11 JF - IEEE Transactions on Power Electronics KW - Electrical and Electronic Engineering SN - 0885-8993 TI - LLC Resonant Converter Modulations for Reduced Junction Temperatures in Half-Bridge Mode and Transformer Flux in the On-the-Fly Morphing Thereto VL - 37 ER -