Publications

S. Zhang, O. Wallscheid, and M. Porrmann, “Machine Learning for the Control and Monitoring of Electric Machine Drives: Advances and Trends,” IEEE Open Journal of Industry Applications, 2023.

D. Jakobeit, M. Schenke, and O. Wallscheid, “Meta-Reinforcement Learning-Based Current Control of Permanent Magnet Synchronous Motor Drives for a Wide Range of Power Classes,” IEEE Transactions on Power Electronics, 2023.

M. Peña, M. Meyer, O. Wallscheid, and J. Böcker, “Model Predictive Direct Self-Control for Six-Step Operation of Permanent Magnet Synchronous Machines,” IEEE Transactions on Power Electronics, 2023.

D. Weber, M. Schenke, and O. Wallscheid, “Safe Reinforcement Learning-Based Control in Power Electronic Systems,” in 2023 International Conference on Future Energy Solutions (FES), 2023, pp. 1–6.

D. Weber, M. Schenke, and O. Wallscheid, “Steady-state error compensation for reinforcement learning-based control of power electronic systems,” IEEE Access, 2023.

O. Wallscheid et al., “ElectricGrid. jl-A Julia-based modeling and simulation tool for power electronics-driven electric energy grids,” Journal of Open Source Software, vol. 8, no. 89, p. 5616, 2023.

F. Book, A. Traue, M. Schenke, B. Haucke-Korber, and O. Wallscheid, “Gym-Electric-Motor (GEM) Control: An Automated Open-Source Controller Design Suite for Drives,” in 2023 IEEE International Electric Machines & Drives Conference (IEMDC), 2023, pp. 1–7.

M. Peña, M. Meyer, O. Wallscheid, and J. Böcker, “Fade-Over Strategy for use of Model Predictive Direct Self-Control with Field-Oriented Control,” in 2023 IEEE International Electric Machines & Drives Conference (IEMDC), 2023, pp. 1–7.

B. Haucke-Korber, M. Schenke, and O. Wallscheid, “Deep Q Direct Torque Control with a Reduced Control Set Towards Six-Step Operation of Permanent Magnet Synchronous Motors,” in 2023 IEEE International Electric Machines & Drives Conference (IEMDC), 2023, pp. 1–7.

E. G. Gedlu, O. Wallscheid, J. Böcker, and O. Nelles, “Online system identification and excitation for thermal monitoring of electric machines using machine learning and model predictive control,” in 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2023, pp. 109–115.

F. Winkel, O. Wallscheid, P. Scholz, and J. Böcker, “Pseudo-Labeling Machine Learning Algorithm for Predictive Maintenance of Relays,” IEEE Open Journal of the Industrial Electronics Society, 2023.

F. Winkel, P. Scholz, O. Wallscheid, and J. Böcker, “Reducing Contact Bouncing of a Relay by Optimizing the Switch Signal During Run-Time,” IEEE Transactions on Automation Science and Engineering, 2023.

P. Rehlaender, O. Wallscheid, F. Schafmeister, and J. 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, vol. 37, no. 11, pp. 13413–13427, 2022.

W. Kirchgässner, O. Wallscheid, and J. 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), 2022, pp. 2746–2753.

A. Brosch, O. Wallscheid, and J. 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, vol. 38, no. 2, pp. 1451–1467, 2022.

N. Förster et al., “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), 2022, p. P-1.

J. Lange, D. Schmies, K. S. Stille, J. Böcker, and O. 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 2022 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), 2022, pp. 1–9.

A. Brosch, O. Wallscheid, and J. Böcker, “Model Predictive Torque Control for Permanent-Magnet Synchronous Motors Using a Stator-Fixed Harmonic Flux Reference Generator in the Entire Modulation Range,” IEEE Transactions on Power Electronics, vol. 38, no. 4, pp. 4391–4404, 2022.

M. Stender, M. Becker, O. Wallscheid, and J. Böcker, “Adaptive Operating Strategy for Induction Motors Under Changing Electrical-Thermal Conditions,” in IECON 2022–48th Annual Conference of the IEEE Industrial Electronics Society, 2022, pp. 1–6.

B. Haucke-Korber, M. Schenke, and O. Wallscheid, “Reinforcement Learning-Based Deep Q Direct Torque Control with Adaptable Switching Frequency Towards Six-Step Operation of Permanent Magnet Synchronous Motors,” in IKMT 2022; 13. GMM/ETG-Symposium, 2022, pp. 1–6.

W. Kirchgaessner, D. Woeckinger, O. Wallscheid, G. Bramerdorfer, and J. Boecker, “Application of Thermal Neural Networks on a Small-Scale Electric Motor,” in IKMT 2022; 13. GMM/ETG-Symposium, 2022, pp. 1–6.

 

N. Pfeifer, M. Kizilcay, P. Malicki, "Evaluation of different Reactive Power Compensation Types of a Mixed 400-kV Transmission Line with an Automated Simulation in EMTP-ATP", European EMTP-ATP Conference 2022, 29.09.-31.09.2022, Mannheim, Germany

N. Pfeifer, M. Kizilcay, P. Malicki, "Characteristics of a mixed 100-km EHV transmission line with shunt compensation for various topologies", UPEC 2022 Conference, 30.08-02.09.2022, Istanbul, Turkey

N. Pfeifer, M. Kizilcay, P. Malicki, "Interference and coupling Effects of passive or inactive Conductors in mixed Transmission Lines during Switching Operations", IEEE PES General Meeting 2022, 17.07-21.07.2022, Paper Contest, Denver, USA

 

D. Weber, S. Heid, H. Bode, J. H. Lange, E. Hüllermeier, and O. Wallscheid, “Safe Bayesian optimization for data-driven power electronics control design in microgrids: From simulations to real-world experiments,” IEEE Access, vol. 9, pp. 35654–35669, 2021.

A. Brosch, O. Wallscheid, and J. Böcker, “Torque and inductances estimation for finite model predictive control of highly utilized permanent magnet synchronous motors,” IEEE Transactions on Industrial Informatics, vol. 17, no. 12, pp. 8080–8091, 2021.

G. Book et al., “Transferring online reinforcement learning for electric motor control from simulation to real-world experiments,” IEEE Open Journal of Power Electronics, vol. 2, pp. 187–201, 2021.

A. Brosch, O. Wallscheid, and J. Böcker, “Model predictive control of permanent magnet synchronous motors in the overmodulation region including six-step operation,” IEEE Open Journal of Industry Applications, vol. 2, pp. 47–63, 2021.

M. Schenke and O. Wallscheid, “A deep Q-learning direct torque controller for permanent magnet synchronous motors,” IEEE Open Journal of the Industrial Electronics Society, vol. 2, pp. 388–400, 2021.

M. Stender, O. Wallscheid, and J. Böcker, “Gray-box loss model for induction motor drives,” in 2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC), 2021, pp. 447–453.

M. Stender, O. Wallscheid, and J. 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), 2021, pp. 390–397.

E. G. Gedlu, O. Wallscheid, and J. 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), 2021, pp. 1–8.

O. Wallscheid, “Thermal monitoring of electric motors: State-of-the-art review and future challenges,” IEEE Open Journal of Industry Applications, vol. 2, pp. 204–223, 2021.

S. Hanke, O. Wallscheid, and J. Böcker, “Comparison of Artificial Neural Network and Least Squares Prediction Models for Finite-Control-Set Model Predictive Control of a Permanent Magnet Synchronous Motor,” 2021.

M. Stender, O. Wallscheid, and J. 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, 2021, pp. 1–6.

 

W. Kirchgässner, O. Wallscheid, and J. Böcker, “Data-driven permanent magnet temperature estimation in synchronous motors with supervised machine learning: A benchmark,” IEEE Transactions on Energy Conversion, vol. 36, no. 3, pp. 2059–2067, 2021.

A. Traue, G. Book, W. Kirchgässner, and O. Wallscheid, “Toward a reinforcement learning environment toolbox for intelligent electric motor control,” IEEE Transactions on Neural Networks and Learning Systems, vol. 33, no. 3, pp. 919–928, 2020.

A. Brosch, S. Hanke, O. Wallscheid, and J. Böcker, “Data-driven recursive least squares estimation for model predictive current control of permanent magnet synchronous motors,” IEEE Transactions on power electronics, vol. 36, no. 2, pp. 2179–2190, 2020.

E. G. Gedlu, O. Wallscheid, and J. Böcker, “Permanent magnet synchronous machine temperature estimation using low-order lumped-parameter thermal network with extended iron loss model,” in The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020), 2020, vol. 2020, pp. 937–942.

O. Wallscheid and E. F. B. Ngoumtsa, “Investigation of disturbance observers for model predictive current control in electric drives,” IEEE Transactions on Power Electronics, vol. 35, no. 12, pp. 13563–13572, 2020.

M. Stender, O. Wallscheid, and J. Bocker, “Accurate torque estimation for induction motors by utilizing globally optimized flux observers,” in 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2020, pp. 219–226.

K. S. Stille, D. Weber, J. Lange, T. Vogt, O. Wallscheid, and J. Böcker, “Emulation of Microgrids for Research and Validation of Control and Operation Strategies,” in 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2020, pp. 324–329.

M. Stender, O. Wallscheid, and J. Böcker, “Data set description: Three-phase IGBT two-level inverter for electrical drives,” Department of Power Electronics and Electrical Drives, University at Paderborn: Paderborn, Germany, 2020.

M. Stender, O. Wallscheid, and J. Boecker, “Comparison of gray-box and black-box two-level three-phase inverter models for electrical drives,” IEEE Transactions on Industrial Electronics, vol. 68, no. 9, pp. 8646–8656, 2020.

W. Kirchgässner, O. Wallscheid, and J. Böcker, “Estimating electric motor temperatures with deep residual machine learning,” IEEE Transactions on Power Electronics, vol. 36, no. 7, pp. 7480–7488, 2020.

 

S. Heid, D. Weber, H. Bode, E. Hüllermeier, and O. Wallscheid, “OMG: A scalable and flexible simulation and testing environment toolbox for intelligent microgrid control,” Journal of Open Source Software, vol. 5, no. 54, p. 2435, 2020.

 

N. Pfeifer, M. Kizilcay, S. Papenheim, P. Malicki, "Coupling Effects and Impact of EHV AC Cable Circuits on LVAC Systems within a Tunnel", IEEE PES General Meeting 2020, 03.08-06.08.2020, Virtual Conference 

 

W. Kirchgässner, O. Wallscheid, and J. Böcker, “Empirical evaluation of exponentially weighted moving averages for simple linear thermal modeling of permanent magnet synchronous machines,” in 2019 IEEE 28th International Symposium on industrial electronics (ISIE), 2019, pp. 318–323.

W. Kirchgässner, O. Wallscheid, and J. Böcker, “Deep residual convolutional and recurrent neural networks for temperature estimation in permanent magnet synchronous motors,” in 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019, pp. 1439–1446.

M. Stender, O. Wallscheid, and J. Böcker, “Development of a black-box two-level igbt three-phase inverter compensation scheme for electrical drives,” in 2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019, pp. 296–301.

O. Wallscheid, E. F. B. Ngoumtsa, and J. Böcker, “Hierarchical model predictive speed and current control of an induction machine drive with moving-horizon load torque estimator,” in 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019, pp. 2188–2195.

O. Wallscheid, M. S. Shafiq, and J. Böcker, “Stator flux-based field-oriented position-sensorless control of permanent magnet synchronous motors with limited parameter knowledge,” in 2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019, pp. 402–407.

M. Schenke, W. Kirchgässner, and O. Wallscheid, “Controller design for electrical drives by deep reinforcement learning: A proof of concept,” IEEE Transactions on Industrial Informatics, vol. 16, no. 7, pp. 4650–4658, 2019.

S. Hanke, S. Peitz, O. Wallscheid, J. Böcker, and M. Dellnitz, “Finite-control-set model predictive control for a permanent magnet synchronous motor application with online least squares system identification,” in 2019 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2019, pp. 1–6.

S. Hanke, O. Wallscheid, and J. Böcker, “Continuous-control-set model predictive control with integrated modulator in permanent magnet synchronous motor applications,” in 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019, pp. 2210–2216.

 

N. Pfeifer, S. Papenheim, P. Malicki, M. Kizilcay, "Analysis of the magnetic field and coupling effects between a 380-kV system and a parallel LVAC system inside a tunnel", European EMTP-ATP Conference 2019, 23.09.-25.09.2019, Cluj-Napoca, Romania

S. Papenheim, P. Malicki, N. Pfeifer, M. Kizilcay, "Lightning Overvoltage Analysis of a mixed HVDC Transmission Line with Consideration of Grounding System and Different Sheath-Bonding Types", European EMTP-ATP Conference 2019, 23.09.-25.09.2019, Cluj-Napoca, Romania

S. Papenheim, P. Malicki, M. Kizilcay, "High Dynamic Arm Voltage Control and Balancing of Parallel Connected HVDC MMCs", UPEC 2019 Conference, 03.09-06.09.2019, Bukarest, Romania

M.Kizilcay, M. Lösing, S. Papenheim, P. Malicki, K. Vennemann, "Influence of shunt compensated EHV transmission lines of several overhead line and XLPE cable sections on system performance", CIGRE Symposium, 04.06-07.06.2019, Aalborg, Denmark

 

O. Wallscheid, M. Schenke, and J. Böcker, “A combined approach to identify induction machine parameters and to design an extended kalman filter for speed and torque estimation,” in 2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC), 2018, pp. 793–799.

D. Weber et al., “Lifetime Extension of Photovoltaic Modules by Influencing the Module Temperature Using Phase Change Material,” in 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)(A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), 2018, pp. 0784–0789.

D. Weber, K. S. Stille, O. Wallscheid, and J. Böcker, “Energy Management for a Nano-CHP Unit and an Electrical Storage System in a Residential Application,” in 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2018, pp. 786–792.

O. Wallscheid, M. Schenke, and J. Böcker, “Improving torque and speed estimation accuracy by conjoint parameter identification and unscented Kalman filter design for induction machines,” in 2018 21st International Conference on Electrical Machines and Systems (ICEMS), 2018, pp. 1181–1186.

 

S. Papenheim, P. Malicki, M. Kizilcay, "Lightning Overvoltage Investigation due to Backflashovers in a Mixed 380-kV HVAC Line", European EMTP-ATP Conference 2018, 17.09.-19.09.2018, Arnhem, Netherlands.

S. Papenheim, P. Malicki, M. Kizilcay, "Lightning Overvoltage Analysis of a mixed 380-kV HVAC Transmission Line", IEE Japan High Voltage Engineering Conference 2018, 02.08. – 03.08.18, Montreal, Canada

P.Malicki, S. Papenheim, M. Kizilcay, "Shielding failure analysis of a hybrid transmission line with AC and DC systems on the same tower", Electric Power Systems Research, vol. 159, pages 2-8, June 2018.   

 

O. Wallscheid, A. Specht, and J. Böcker, “Observing the Permanent Magnet Temperature of Synchronous Motors Based on Electrical Fundamental Wave Model Quantities,” IEEE Transactions on Industrial Electronics, vol. 64, no. 5, pp. 3921–3929, 2017.

O. Wallscheid, Ein Beitrag zur thermischen Ausnutzung permanenterregter Synchronmotoren in automobilen Traktionsanwendungen. Shaker Verlag, 2017.

T. Vogt, D. Weber, O. Wallscheid, and J. Böcker, “Prediction of residual power peaks in industrial microgrids using artificial neural networks,” in International Joint Conference on Neural Networks (IJCNN), 2017, pp. 3228–3235.

O. Wallscheid and J. Böcker, “Fusion of direct and indirect temperature estimation techniques for permanent magnet synchronous motors,” in 2017 IEEE International Electric Machines and Drives Conference (IEMDC), 2017, pp. 1–8.

O. Wallscheid and J. Böcker, “Derating of automotive drive systems using model predictive control,” in 2017 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2017, pp. 31–36.

S. Hanke, O. Wallscheid, and J. Böcker, “A direct model predictive torque control approach to meet torque and loss objectives simultaneously in permanent magnet synchronous motor applications,” in 2017 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2017, pp. 101–106.

D. Gaona, O. Wallscheid, and J. Bocker, “Sensitivity analysis of a permanent magnet temperature observer for PM synchronous machines using the monte carlo method,” in 2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS), 2017, pp. 599–606.

D. Gaona, O. Wallscheid, and J. Böcker, “Glocal identification methods for low-order lumped parameter thermal networks used in permanent magnet synchronous motors,” in 2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS), 2017, pp. 1–126.

D. Gaona, O. Wallscheid, and J. Böcker, “Fusion of a lumped-parameter thermal network and speed-dependent flux observer for PM temperature estimation in synchronous machines,” in 2017 IEEE Southern Power Electronics Conference (SPEC), 2017, pp. 1–6.

 

S. Papenheim, D. Potkrajac, P. Malicki, M. Kizilcay, "Modelling of Full- and Halfbridge MMCs based on the Continuous Model", European EMTP-ATP Conference 2017, 04.07.-06.07.2017, Kiel, Germany.

D. Potkrajac, S. Papenheim, M. Kizilcay, P. Malicki, "Secondary Arc Effects on a MMC-HVDC Transmission System with AC Systems on the same Tower", European EMTP-ATP Conference 2017, 04.07.-06.07.2017, Kiel, Germany.

M. Kizilcay, K. Teichmann, S. Papenheim, P. Malicki, "Analysis of Switching Transients of an EHV Transmission Line Consisting of Mixed Power Cable and Overhead Line Sections", IPST Conference 2017, 26.06.-29.06.2017, Seoul, Republic of Korea.

 

O. Wallscheid, U. Ammann, and J. Boecker, “Real-time capable model predictive control of permanent magnet synchronous motors using particle swarm optimisation,” in PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 2016, pp. 1–8.

O. Wallscheid, T. Huber, W. Peters, and J. Böcker, “A Critical Review of Techniques to Determine the Magnet Temperature of Permanent Magnet Synchronous Motors under Real-time Conditions,” EPE Journal, no. 25, pp. 1–10, 2016.

 

P. Malicki, A. Mackow, M. Kizilcay, "Estimating the Lightning Performance of a Multi-Circuit Transmission Tower", ICLP 2016, 25.09.-30.09.2016, Estoril, Portugal.

 

J. Böcker, O. Wallscheid, L. Keuck, and O. Wallscheid, “The Challenge of Electromobility: Increasing the Cruising Range of Electric Vehicles,” Forschungsforum Paderborn, pp. 6–13, 2015.

O. Wallscheid and J. Böcker, “Design and Identification of a Lumped-Parameter Thermal Network for Permanent Magnet Synchronous Motors Based on Heat Transfer Theory and Particle Swarm Optimisation,” 2015.

O. Wallscheid and M. Meyer, Arbeitspunktsteuerung zum wirkungsgradoptimierten Betrieb von Asynchronmaschinen. 2015.

O. Wallscheid and J. Böcker, “Global Identification of a Low-Order Lumped-Parameter Thermal Network for Permanent Magnet Synchronous Motors,” IEEE TRANSACTIONS ON ENERGY CONVERSION, vol. 31, no. 1, pp. 354–365, 2015.

W. Peters, O. Wallscheid, and J. Böcker, “Optimum Efficiency Control of Interior Permanent Magnet Synchronous Motors in Drive Trains of Electric and Hybrid Vehicles,” 2015.

 

G. Schröder, T. Schulte, "Direkte Drehmomentregelung (DTC) für Matrixumrichter mit reduzierter Gleichtaktspannung", VDE-Tagung Antriebssysteme, Aachen, 2015

 

A. Mackow, P. Malicki, M. Kizilcay, "Application of EMTP-ATP in Lightning Surge Analysis of Multi-Circuit Transmission Lines", European EMTP-ATP Conference 2015, 14.09.-18.09.2015, Grenoble, France.

A. Mackow, M. Kizilcay, P. Malicki, "Lightning Performance of Overhead Hybrid Transmission Line", PowerTech Conference 2015, 30.06.-02.07.2015, Eindhoven, Netherlands. 

 

O. Wallscheid and J. Böcker, “Wirkungsgradoptimale Arbeitspunktsteuerung für einen permanenterregten Synchronmotor mit vergrabenen Magneten unter Berücksichtigung von Temperatureinflüssen,” 2013.

 

T. Schulte, G. Schröder, "DTC for Matrix Converters with Reduced Common Mode Voltage", 17th International Symposium Power Electronics Ee2013, Novi Sad, 2013