A Power Factor Correction Ac-Dc Boost Converter with a New Passive Snubber Cell

This paper introduces a new passive snubber for soft switching (SS) in power factor correction (PFC) AC-DC converters. In the proposed converter, the main switch turns on with zero current switching (ZCS) and turns off with zero voltage switching (ZVS) owing to the proposed passive snubber. Besides, the main diode turns on with ZVS and turns off with ZCS. The proposed converter has features such as low cost, simple control and high power density. Also, the output current and voltage are controlled by the proposed PFC converter in wide line and load range. The operating principle and the operation intervals of the proposed converter are presented in detail. Also, the simulation results of converter are obtained for 1 kW and 100 kHz. It is observed that the novel proposed converter has 0.99 power factor with sinusoidal current shape. So, power factor quality is fairly high