Conference paper
A Bidirectional GaN-Based CLLC Converter for Plug-In Electric Vehicles On-Board Chargers
This paper presents a bidirectional CLLC converter solution for the dc-dc stage in plug-in electric vehicle (PEV) onboard battery chargers. The proposed architecture allows the converter to operate at resonance for the bidirectional constantpower (CP) load range with a variable bus voltage, while frequency modulation is employed for the constant-current (CC) load range in the grid-to-vehicle (G2V) mode with a fixed bus voltage, resulting in a limited bus voltage range.
This enables the use of 650-V Gallium nitride (GaN) devices for the primary and secondary sides’ switches. The design flow is presented and a 1-kW high-frequency prototype is implemented. GaN reverse conduction characteristics are investigated and employed for the high-frequency current rectification.
The prototype operates with soft switching across the operational range, achieving an efficiency of up to 95.7%, with the resonant inductances integrated in the transformer.
Language: | English |
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Publisher: | IEEE |
Year: | 2021 |
Pages: | 1129-1135 |
Proceedings: | 46th Annual Conference of the IEEE Industrial Electronics Society |
ISBN: | 1728154146 , 1728154154 , 9781728154145 , 9781728154152 , 1728154138 and 9781728154138 |
ISSN: | 25771647 |
Types: | Conference paper |
DOI: | 10.1109/IECON43393.2020.9254560 |
ORCIDs: | Ammar, Ahmed Morsi |