F. Schafmeister and J. Kolar, “Novel Hybrid Modulation Schemes Extending the Reactive Power Control Range of Conventional and Sparse Matrix Converters Operating at Maximum Output Voltage,” presented at the  International Power Electronics and Motion Control Conference (EPE-PEMC), Riga, Latvia, 2004.
LibreCat: /record/30310

J. Böcker, N. Amann, and B. Schulz, “Active Suppression of Torsional Oscillations,”10.1016/s1474-6670(17)31123-0__IFAC Proceedings Volumes, vol. 37, no. 14, pp. 319–324, 2004, doi:10.1016/s1474-6670(17)31123-0 .
LibreCat: /record/29920
DOI: 10.1016/s1474-6670(17)31123-0

N. Amann, J. Böcker, and F. Prenner, “Active Damping of Drive Train Oscillations for an Electrically Driven Vehicle,”10.1109/tmech.2004.839036__IEEE/ASME Transactions on Mechatronics, vol. 9, no. 4, pp. 697–700, 2004, doi:10.1109/tmech.2004.839036 .
LibreCat: /record/29924
DOI: 10.1109/tmech.2004.839036

J. Böcker, “Tolerance band controller for a three-level four-quadrant converter including DC link balancing,”10.1109/pesc.2004.1354749__presented at the PESC, Aachen, 2004, doi:10.1109/pesc.2004.1354749 .
LibreCat: /record/29922
DOI: 10.1109/pesc.2004.1354749

H. D. Njiende, N. Fröhleke, and J. Böcker, “Derivation of integrated magnetic components using reluctance and mathematical modeling,”10.1109/pesc.2004.1354859__2004, doi:10.1109/pesc.2004.1354859 .
LibreCat: /record/30437
DOI: 10.1109/pesc.2004.1354859

C. Kauczor and N. Fröhleke, “Inverter topologies for ultrasonic piezoelectric transducers with high mechanical Q-factor,”10.1109/pesc.2004.1355265__2004, doi:10.1109/pesc.2004.1355265 .
LibreCat: /record/30439
DOI: 10.1109/pesc.2004.1355265

H. Wetzel, A. Siegel, H. Njiende, N. Fröhleke, and J. Böcker, “Low Voltage Asymmetrical Half-Bridge Converter with Integrated Magnetics,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.
LibreCat: /record/30432

B. Schulz, A. Pottharst, N. Fröhleke, and J. Böcker, “Modelling of Influences to a Linear-Drive-System,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.
LibreCat: /record/30433

A. Pottharst, K. Baptist, O. Schütze, J. Böcker, N. Fröhleke, and M. Dellnitz, “Operating Point Assignment of a Linear Motor Driven Vehicle Using Multiobjective Optimization Methods,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.
LibreCat: /record/30434

R. Li, A. Pottharst, N. Fröhleke, and J. Böcker, “Energy Storage Scheme for Rail-guided Shuttle using Ultracapacitor and Battery,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.
LibreCat: /record/30435

R. Li, A. Pottharst, N. Fröhleke, and J. Böcker, “Analysis and Design of Improved Isolated Full-Bridge Bi-Directional DC-DC Converter,” presented at the PESC 2004, Aachen, Germany, 2004.
LibreCat: /record/30438

A. Pottharst, B. Schulz, and J. Böcker, “Kommunikationssystem einer Anlage mit doppelt gespeistem Linearmotor,” presented at the SPS/IPC/DRIVES 2004, Nürnberg, Deutschland, 2004.
LibreCat: /record/30440

C. Kauczor, T. Schulte, and H. Grotstollen, “Piezoelectric Transformer of Travelling Wave Type,” presented at the ACTUATOR 2004, Bremen, Germany, 2004.
LibreCat: /record/30436

B. Yang, Regelung der Längs- und Vertikalbewegung des Linearmotors für ein vollaktives spurgeführtes Bahnfahrzeug. 2004.
LibreCat: /record/30442

T. Schulte, Stromrichter- und Regelungskonzepte für Ultraschall-Wanderwellenmotoren. 2004.
LibreCat: /record/30441

J. Böcker, “Advanced Hysteresis Control of Brushless DC Motors,” presented at the Germany-Korea Symposium, Aachen, Germany, 2004.
LibreCat: /record/29921

F. Schafmeister and J. Kolar, “Novel Modulation Schemes Minimizing the Switching Losses of Sparse Matrix Converters,” in Proc. IEEE Annual Industrial Electronics Society Conference (IECON), Roanoke, VA, USA, 2003, pp. 2085–2090.
LibreCat: /record/30307

F. Schafmeister, M. Baumann, and J. Kolar, “Analytically Closed Calculation of the Conduction Losses of Three-Phase AC-AC Sparse Matrix Converters,” EPE Journal, vol. 13, no. 1, pp. 5–14, 2003.
LibreCat: /record/30306

F. Schafmeister, S. Herold, and J. W. Kolar, “Evaluation of 1200 V-Si-IGBTs and 1300 V-SiC-JFETs for application in three-phase very sparse matrix AC-AC converter systems,”10.1109/apec.2003.1179222__2003, doi:10.1109/apec.2003.1179222 .
LibreCat: /record/30418
DOI: 10.1109/apec.2003.1179222

H. Njiende, N. Fröhleke, and W. A. Cronje, “Modeling and analysis of integrated magnetic components,”10.1109/pesc.2003.1218307__2003, doi:10.1109/pesc.2003.1218307 .
LibreCat: /record/30421
DOI: 10.1109/pesc.2003.1218307