Design and Implementation of SiC-Based Wide Input Voltage Range Full-Bridge DC-to-DC Resonant Converter

• Main Authors: Ciao-YinPan, 潘巧茵
• Other Authors: Tsorng-Juu Liang
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/842mq6

碩士 === 國立成功大學 === 電機工程學系 === 107 === With the development of electric vehicles (EVs), people have paid more attention to the converters in the EV systems. Among the converters, the wide input voltage range converter implemented between the EV battery pack and the auxiliary circuits is an important research topic. The SiC-based wide input voltage range converter with boost function is implemented in the thesis. The characteristics of SiC power devices and the operating principles of the resonant converter are studied. In addition, the voltage and current stress on the resonant capacitor are also analyzed in detail. Finally, the laboratory prototype of wide input range full-bridge (FB) DC-to-DC resonant converter with active-boost rectifier based on SiC power transistors with the input voltage 200 – 400 V, output voltage 48 V, and rated power 1 kW is implemented with a digital signal processor TMS320F28335. As the experimental results show, this converter can be operated in wide input range. Also, the operating frequency range is smaller compared to conventional resonant converter, and the highest efficiency is 91.07%.