Print Email Facebook Twitter Voltage/Current Doubler Converter for an Efficient Wireless Charging of Electric Vehicles With 400V and 800V Battery Voltages Title Voltage/Current Doubler Converter for an Efficient Wireless Charging of Electric Vehicles With 400V and 800V Battery Voltages Author Grazian, F. (TU Delft DC systems, Energy conversion & Storage) Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Date 2023 Abstract The lithium-ion battery of an electric vehicle (EV) is typically rated at either 400 or 800 V. When considering public parking infrastructures, EV wireless chargers must efficiently deliver electric power to both battery options. This can be normally achieved by regulating the output voltage through a dc-dc converter at the cost of higher onboard circuit complexity and lower overall efficiency. This article proposes a wireless charging system that maintains a high power transfer efficiency when charging EVs with either 400- or 800-V nominal battery voltage at the same power level. The control scheme is implemented at the power source side, and only passive semiconductor devices are employed on board the EV. The presented system, called voltage/current doubler (V/I-D), comprises two sets of series-compensated coupled coils, each of them connected to a dedicated H-bridge converter. The equivalent circuit has been analyzed while explaining the parameters' selection. The analytical power transfer efficiency has been compared to the one resulting from the conventional one-to-one coil system at 7.2 kW. For the same power level, the dc-to-dc efficiency of 97.11% and 97.52% have been measured at 400-V and 800-V voltage output, respectively. Finally, the functionality of the V/I-D converter has been proved at both the even and uneven misalignments of the two sets of coupled coils. Subject Battery voltageelectric vehicles (EVs)inductive power transferwireless charging To reference this document use: http://resolver.tudelft.nl/uuid:71693660-0fd0-47d7-a7c6-0b436ccc0315 DOI https://doi.org/10.1109/TIE.2022.3208582 Embargo date 2023-09-15 ISSN 0278-0046 Source IEEE Transactions on Industrial Electronics, 70 (8), 7891-7903 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 F. Grazian, Thiago B. Soeiro, P. Bauer Files PDF Voltage_Current_Doubler_C ... ltages.pdf 8.76 MB Close viewer /islandora/object/uuid:71693660-0fd0-47d7-a7c6-0b436ccc0315/datastream/OBJ/view