FB ZVT PWM 컨버터의 환류구간 손실저감을 위한 보조회로

An auxiliary circuit for reducing loss during free-wheeling interval in FB ZVT PWM converter

  • 윤창선 (전남대 대학원 전기공학과) ;
  • 김병철 (조선이공대학 전기과) ;
  • 김광헌 (전남대 공대 전기공학과 부교수 및 지역협력센터)
  • 발행 : 2000.06.01

초록

본 논문에서는 FB ZVT PWM DC-DC 컨버터에서 영전압 스위칭에 도달하기 위해 두 개의 보조 스위치 대신에 가포화 인덕터를 사용한다. 기존의 고주파 위상 변위 FB ZVT PWM DC-DC 컨버터는 프리휠링 주기동안 고주파 변압기와 스위칭 소자를 통해 흐르는 순환전류를 갖으며, 이러한 순환전류로 인해 컨버터의 도전손실이 증가한다. 이러한 손실을 줄이기 위해 변압기의 2차측에 도전손실저감회로를 제안한다. 컨버터의 동작원리를 자세하게 설명하고 제안된 회로를 시뮬레이션과 실험을 통해 검증하였다.

In this paper, we propose a FB ZVT(full bridge zero voltage transition) PWM OC~OC converter which uses a a saturable reactor, instead of two additional switches, to achieve zero voltage switching. The conventional h high frequency phase shifted FB ZVT PWM OC-OC converter has a disadvantage that a circulating current f flows through high frequency transformer and switching devices during the free-wheeling interval. Due to this c circulating current, conduction loss increases. In order to reduce such the loss as this, we propose circuit of r reducing conduction loss at the secondary side of transformer. The operation principles are explained in detail a and the several interesting simulations and experimental results verify the validity of the proposed circuit.

키워드

참고문헌

  1. IEEE PESC A Novel Soft Switching Full Bridge DC/DC Converter : Analysis, Design, Considerations, and Experimental Results at 1.5㎾, 100㎑ R. Redl, N. O.;L. Balogh
  2. IEEE PESC Zero-Voltage Switching Technique in DC-DC Converter Circuit K. H. Liu;F. C. Lee
  3. IEEE Power Electronics Specialists Conf. Rec. Pseudo-resonant Full-Bridge DC-DC converter O. D. Patterson;D. M. Divan
  4. Transactions on Power Electronics of IEEE v.10 no.6 A New ZVS PWM Unity Power Factor Rectifier with Reduced Conduction Losses Alexandre Ferrari de Souza;Ivo Barbi
  5. IEEE PESC Novel Zero Voltage Transition PWM Converters G. Hua;C.S. Leu;F.C. Lee
  6. IEEE PESC Analysis of a Zero Voltage Transition DC-DC Full Bridge Converter Michael Marx;Dierk Schroder
  7. Transactions on Power Electronics of IEEE v.11 no.4 Zero Voltage and Zero Current Switching Full Bridge PWM Converter for High Power Applications J. G, Cho;Juan A. Sabate;Guichao Hua;Fred C. Lee
  8. IEEE PESC A Novel Zero Current Transition Full Bridge DC-DC Converter Michael Marx;Dierk Schroder
  9. IEEE IAS A Novel Full Bridge Zero Voltage Transition PWM DC/DC Converter using a Saturable Core Reactor DaFeng Weng;S.Yuvarajan