Single-Phase Bidirectional ZVZCS AC-DC Converter for MV-Connected Ultra-Fast Chargers

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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.
Original languageEnglish
Title of host publicationPCIM Europe 2022
Subtitle of host publicationInternational Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management Proceedings, 10 – 12 May 2022, Nuremberg
PublisherVDE Verlag
Pages124-130
Number of pages7
ISBN (Electronic)978-3-8007-5822-7
DOIs
Publication statusPublished - 2022
Event2022 International Exhibition and Conference for Power Electronics, Intelligent Motion (PCIM Europe 2022) - Nuremberg, Germany
Duration: 10 May 202212 May 2022

Conference

Conference2022 International Exhibition and Conference for Power Electronics, Intelligent Motion (PCIM Europe 2022)
Country/TerritoryGermany
CityNuremberg
Period10/05/2212/05/22

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)).

FundersFunder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek

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