Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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High Power Hybrid Multilevel PWM Rectifier with Unity Power Factor

단위 역률을 갖는 대용량 하이브리드 멀티레벨 PWM 정류기

  • Choi, Nam-Sup (Dept. of Electrical Engineering, Yosu National University)
  • 최남섭 (여수대학교 전기및반도체공학과)
  • Published : 2000.07.17
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Abstract

This paper presents a high power-hybrid multilevel PWM rectifier with unity power factor. The features and advantages of the proposed PWM rectifier can be summarized as follows; 1) It realizes the high power high voltage AC/DC power conversion. 2) It uses no transformer which is bulky and heavy, 3) It has hybrid structure so that switching devices can be effectively utilized, 4) It produces high quality AC current even in high power high voltage applications, 5) The input power factor remains unity by simple modulation index control. The multilevel rectifier is analyzed by using the circuit DQ transformation whereby the characteristics and control equations are obtained.

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