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11 Publications
2023 | Conference Paper | LibreCat-ID: 48352
An Optimized Third-Harmonic Injection Reduces DC-Link Voltage Ripple in Cascaded H-Bridge Converters up to 50% for all Power Factors
R. Unruh, J. Böcker, F. Schafmeister, in: 2023 25th European Conference on Power Electronics and Applications (EPE’23 ECCE Europe), IEEE, 2023.
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R. Unruh, J. Böcker, F. Schafmeister, in: 2023 25th European Conference on Power Electronics and Applications (EPE’23 ECCE Europe), IEEE, 2023.
2022 | Conference Paper | LibreCat-ID: 34176
Zero-Sequence Voltage Reduces DC-Link Capacitor Demand in Cascaded H-Bridge Converters for Large-Scale Electrolyzers by 40%
R. Unruh, F. Schafmeister, J. Böcker, in: 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), IEEE, 2022.
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R. Unruh, F. Schafmeister, J. Böcker, in: 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), IEEE, 2022.
2021 | Conference Paper | LibreCat-ID: 29938
Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault Conditions
R. Unruh, J. Lange, F. Schafmeister, J. Böcker, in: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe), IEEE, 2021.
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R. Unruh, J. Lange, F. Schafmeister, J. Böcker, in: 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe), IEEE, 2021.
2020 | Conference Paper | LibreCat-ID: 29939
Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design
R. Unruh, F. Schafmeister, J. Böcker, in: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe), IEEE, 2020.
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R. Unruh, F. Schafmeister, J. Böcker, in: 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe), IEEE, 2020.
2020 | Conference Paper | LibreCat-ID: 29940
1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications
R. Unruh, F. Schafmeister, N. Fröhleke, J. Böcker, in: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, VDE, 2020.
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R. Unruh, F. Schafmeister, N. Fröhleke, J. Böcker, in: PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, VDE, 2020.
2016 | Journal Article | LibreCat-ID: 4244
Coherent photocurrent spectroscopy of single InP-based quantum dots in the telecom band at 1.5 µm
S. Gordon, M. Yacob, J.P. Reithmaier, M. Benyoucef, A. Zrenner, Applied Physics B 122 (2016).
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S. Gordon, M. Yacob, J.P. Reithmaier, M. Benyoucef, A. Zrenner, Applied Physics B 122 (2016).
2013 | Conference Paper | LibreCat-ID: 9796
Characteristics of Piezoelectric Energy Harvesters in Autonomous Systems
W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, in: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, Hannover, Germany, 14.-17.7.2013, Hannover, Germany, 2013, pp. 159–161.
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W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, in: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, Hannover, Germany, 14.-17.7.2013, Hannover, Germany, 2013, pp. 159–161.
2013 | Conference Paper | LibreCat-ID: 36920
An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors
D. He, W. Müller, in: H. Weghorn (Ed.), Proceedings of the International Conference on Applied Computing (AC), Fort Worth, Texas, USA, 2013.
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D. He, W. Müller, in: H. Weghorn (Ed.), Proceedings of the International Conference on Applied Computing (AC), Fort Worth, Texas, USA, 2013.
2008 | Conference Paper | LibreCat-ID: 9568
A simple pre-stress estimating method of langevin transducers
F. Bo, L. Ting, T. Hemsel, in: Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On, 2008, pp. 324–327.
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F. Bo, L. Ting, T. Hemsel, in: Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On, 2008, pp. 324–327.
2008 | Conference Paper | LibreCat-ID: 9576
Development of a biomedical tissue differentiation system using piezoelectric actuators
D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.
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D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.
2004 | Conference Paper | LibreCat-ID: 9519
A novel approach for high power ultrasonic linear motors
T. Hemsel, M. Mracek, J. Wallaschek, P. Vasiljev, in: Ultrasonics Symposium, 2004 IEEE, 2004, pp. 1161–1164.
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T. Hemsel, M. Mracek, J. Wallaschek, P. Vasiljev, in: Ultrasonics Symposium, 2004 IEEE, 2004, pp. 1161–1164.