Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

New Control Scheme for AC-DC-AC Converter Without DC Link Electrolytic Capacitor

직류링크 전해커패시터 없는 AC-DC-AC 컨버터 제어에 관한 연구

  • 김준석 (서울대학교 전기공학과 전력전자 연구실) ;
  • 설승기 (서울대학교 전기공학과 전력전자 연구실)
  • Published : 1993.07.18
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Abstract

In this paper, a novel concept for a static three-phase to three-phase power converter for an AC drive with an unity power factor and reduced harmonics on the utility line is presented. The power circuit consists of two back-to-back connected six-pulse bridges having only a $5{\mu}F$ ceramic capacitor in the DC link. By controlling the active power balance between two bridges, the DC link voltage can be maintained within 20V deviation from the nominal value with the small ceramic capacitor regardless of the load variation even in the unbalanced source condition.

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