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Double Step-Up PFC Converter Using Asymmetrical PWM Scheme

비대칭 PWM 방식을 이용한 이중 승압 기능을 갖는 PFC 컨버터

  • Yeongjin Kim (School of Energy Engineering, Kyungpook National University) ;
  • Jaeseong Lim (School of Energy Engineering, Kyungpook National University) ;
  • Honnyong Cha (School of Energy Eng., Kyungpook National University)
  • Received : 2022.09.13
  • Accepted : 2022.10.20
  • Published : 2023.02.20

Abstract

This paper proposes a PFC converter with a double step-up function using an asymmetrical PWM scheme. For the conventional PWM scheme, the input voltage range, which maintains a double step-up function, is limited because the proposed converter has different voltage gains and characteristics when the duty ratio(D) is less than 0.5. The proposed converter has a constant voltage gain regardless of the magnitude of the input voltage and can achieve output voltage balancing by using the asymmetrical PWM scheme. A 1.6-kW prototype of the proposed converter was built and tested to verify the performance.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제임(No. 20223030010200).

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