능동 스너버를 갖는 2KW 소프트 스위칭 ZVT 역률 보정 컨버터 설계

Design of A 2KW Soft-Switching ZVT Power Factor Correction Converter with Active Snubbers

In this paper a soft switching ZVT power factor converter using active snubbers is designed to improve efficiency and reduce voltage spike and parastic ringing. The main switch achieves ZVT and the auxiliary switch performs with ZCS. A 2KW soft switching ZVT converter is designed with switching frequency 100kHz, output voltage 400VDC. Then the designed system is realized and experimental results shows that the measured efficiency and power factor were over $97.45\%$ and 0.997 respectively with an input current THD less than $3\%$.