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6 Publications
2024 | Conference Paper | LibreCat-ID: 54356
Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” In ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe. Darmstadt: IEEE, n.d. https://doi.org/10.1109/ECCEEurope62508.2024.10751954.
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2023 | Conference Paper | LibreCat-ID: 48352
Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “An Optimized Third-Harmonic Injection Reduces DC-Link Voltage Ripple in Cascaded H-Bridge Converters up to 50% for All Power Factors.” In 2023 25th European Conference on Power Electronics and Applications (EPE’23 ECCE Europe). IEEE, 2023. https://doi.org/10.23919/epe23ecceeurope58414.2023.10264313.
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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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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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2020 | Conference Paper | LibreCat-ID: 29940
Unruh, Roland, Frank Schafmeister, Norbert Fröhleke, and Joachim Böcker. “1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications.” 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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2020 | Conference Paper | LibreCat-ID: 29880
Unruh, Roland, Frank Schafmeister, and Joachim Böcker. “11kW, 70kHz LLC Converter Design with Adaptive Input Voltage for 98% Efficiency in an MMC.” In 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2020. https://doi.org/10.1109/compel49091.2020.9265771.
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