A SiC-Based 22kW Bi-directional CLLC Resonant Converter with Flexible Voltage Gain Control Scheme for EV On-Board Charger
Konferenz: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.07.2020 - 08.07.2020 in Deutschland
Tagungsband: PCIM Europe digital days 2020
Seiten: 7Sprache: EnglischTyp: PDF
Autoren:
Wei, Chen; Zhu, Dongfeng; Xie, Haitao; Liu, Ying (Wolfspeed, A Cree Company, China)
Shao, Jianwen (Wolfspeed, A Cree Company, United States)
Inhalt:
This paper presents a SiC MOSFET-based 22 kW bi-directional CLLC resonant converter for Electric Vehicle (EV) on-board charger (OBC) with high efficiency and high power density. To achieve high efficiency in both charging and discharging mode, a novel flexible gain control scheme of the CLLC resonant converter is examined in the paper. A digital-controlled prototype, with a switching frequency of 140kHz-250kHz, is demonstrated with 8kW/L power density exceeding 98.5% in peak efficiency in both charging mode and discharging mode.