전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)

전력전자학회 (The Korean Institute of Power Electronics)
권호 표지

Two Stage Power Factor Correction (PFC) Converter With A Single PWM Controller

  • Park, Hang-Seok (Department of Electrical Engineering Seoul National University) ;
  • Lee, Kyu-Chan (Department of Electrical Engineering Seoul National University) ;
  • B.H. Cho (Department of Electrical Engineering Seoul National University)
  • 발행 : 1998.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Two-stage power factor correction (PFC) converter with a single PWM controller for universal input voltage (90-264V) is proposed. It consists of a power factor pre-regulator cascaded by a DC/DC converter as in a conventional two-stage approach. However, a single PWM controller is used as in a single-stage, single-switch PFC approach. The switch in the PFC part is synchronized with the switch in the DC/DC converter with a fixed switching frequency. Employing an adaptive delay scheme the switch in the PFC part is controlled to limit the energy storage capacitor voltage within a designed range for the optimum efficiency, and to reduce input current harmonic distortion. The experimental results obtained on a 200W (5V/40A) prototype PFC converter are given to verify the effectiveness of the proposed control method.

키워드