Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Comparative Study on the Output Voltage Control Strategies of Three Phase Inverter with LC Filter for UPS

UPS 용 3상 인버터의 LC필터단 출력전압 제어 방식 비교연구

  • Na, Woon-Ky (Dept. of Electrical Engineering, Kwangwoon University) ;
  • Kim, Tae-Wan (Dept. of Electrical Engineering, Kwangwoon University) ;
  • Jeong, Seung-Gi (Dept. of Electrical Engineering, Kwangwoon University)
  • Published : 1996.07.22
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Abstract

This paper compares the output voltage control strategies of three-phase PWM inverter for uninterruptible power supply. The feedforward control, feedforward/feedback control, and decoupled feedback control in both the synchronous reference frame and the stationary reference frame are examined. In particular, it is shown that the response of the decoupled feedback controller in the synchronous reference frame can be improved by pole-zero cancellation method. It is also shown that the pole-zero cancellation method reduces to the deadbeat control, when it is implemented with digital controller.

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