2kW 벅-부스트 타입 PFC 컨버터 효율 분석 연구

To handle voltage fluctuation, not only boost operation but also buck operation are essential for PFC converter. The efficiency of various Buck-Boost type PFC converters is analysed by PSIM thermal module which can calculate switching components’ switching loss and conduction loss easily. 2kW PFC converters are simulated. The input voltage is from 92Vrms to 322Vrms. The output voltage is 350V. The operation frequency is 50kHz.