Abstract
A single-phase bidirectional converter fed by a Modular Multilevel Converter (MMC) through a MediumFrequency Transformer (MFT) is a promising solution for medium-voltage-connected chargers of Electric Vehicles (EV). An operating scheme is developed for the converter to realize Zero-Voltage Switching
(ZVS) and nearly Zero-Current Switching (ZCS) over the full load range. In comparison with conventional Phase Shift Control (PSC), the proposed scheme significantly reduces the reactive power through the AC-DC converter, thereby decreasing turn-off switching losses and the RMS current through the output
capacitor. A trade-off between RMS current stresses and the required minimum number of sub-modules in the MMC side is found and studied to provide insights on how the proposed method affects the overall performance of the system. Simulations results are provided to verify the analytical findings.
(ZVS) and nearly Zero-Current Switching (ZCS) over the full load range. In comparison with conventional Phase Shift Control (PSC), the proposed scheme significantly reduces the reactive power through the AC-DC converter, thereby decreasing turn-off switching losses and the RMS current through the output
capacitor. A trade-off between RMS current stresses and the required minimum number of sub-modules in the MMC side is found and studied to provide insights on how the proposed method affects the overall performance of the system. Simulations results are provided to verify the analytical findings.
Original language | English |
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Title of host publication | PCIM Europe 2022 |
Subtitle of host publication | International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings, 10 – 12 May 2022, Nuremberg |
Publisher | VDE Verlag |
Pages | 124-130 |
Number of pages | 7 |
ISBN (Electronic) | 978-3-8007-5822-7 |
DOIs | |
Publication status | Published - 2022 |
Event | 2022 International Exhibition and Conference for Power Electronics, Intelligent Motion (PCIM Europe 2022) - Nuremberg, Germany Duration: 10 May 2022 → 12 May 2022 |
Conference
Conference | 2022 International Exhibition and Conference for Power Electronics, Intelligent Motion (PCIM Europe 2022) |
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Country/Territory | Germany |
City | Nuremberg |
Period | 10/05/22 → 12/05/22 |
Funding
This publication is part of the project NEON (with project number 17628 of the research programme Crossover which is (partly) financed by the Dutch Research Council (NWO)).
Funders | Funder number |
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Nederlandse Organisatie voor Wetenschappelijk Onderzoek |