A SiC Based high efficiency high power Three-Phase Interleaved LLC Resonant Converter
Conference: PCIM Asia 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
10/26/2022 - 10/27/2022 at Shanghai, China
Proceedings: PCIM Asia 2022
Pages: 6Language: englishTyp: PDF
Authors:
Wei, Chen; Hu, Zongzeng; Zhang, Fulin (Wolfspeed, China)
Shao, Jianwen; Narain, Anuj (Wolfspeed, USA)
Abstract:
This paper presents a SiC MOSFET-based 30kW three-phase interleaved LLC resonant converter with high efficiency, high power density and wide output voltage range. It is a good fit for Electric Vehicle (EV) fast charger, High Voltage Direct Current system (HVDC) and other high power DC/DC systems. A flexible gain control scheme of the three-phase LLC resonant converter is studied. A digital controlled prototype with a switching frequency range of 135kHz-250kHz is demonstrated with 200Vdc-1000Vdc output voltage range, 6.5kW/L power density and exceeding 98% in peak efficiency.