Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2001.10a
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- Pages.611-616
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- 2001
A Study on PFC of Active Clamp ZVS Flyback Converter
- Choi Tae-Young (Sung Kyun Kwan University) ;
- Ahn Jeong-Joon (Sung Kyun Kwan University) ;
- Ryu Dong-Kyun (Sung Kyun Kwan University) ;
- Lee Woo-Suk (Sung Kyun Kwan University) ;
-
Won Chung-Yuen
(Sung Kyun Kwan University)
;
- Kim Soo-Seok (Seoul National University of Technology)
- Published : 2001.10.01
Abstract
This paper analyzed PFC of active clamp ZVS flyback converter by adding two methods PFC (power Factor Correction) circuit - two-stage and single-stage. The addition of active clamp circuit also provides a mechanism for achieving ZVS of both the primary and auxiliary switches. ZVS also limits the turn off di/dt of the output rectifier, reducing rectifier-switching loss and switching noise, due to diode reverse recovery. As a result, the proposed converters have characteristics of the reduced switching noise and high efficiency in comparison to conventional flyback converter. The simulation and experimental results show that the proposed converter improve the input PF of 300W ZVS flyback converter by adding single-stage, two-stage PFC circuit.
Keywords