Improvement of Output Voltage Waveforms by DC-Link Neutral Point Voltage Estimation for FSTPI

4스위치 3상 인버터의 직류 링크 중성점 전압 추정에 의한 출력전압 불평형 개선

  • 김정훈 (두원중공업) ;
  • 조인철 (울산대학교 공대 전기전자정보시스템공학과) ;
  • 이홍희 (울산대 전기전자정보시스템공학과)
  • Published : 2009.09.01

Abstract

It is very important to maintain the balanced output voltage waveforms under the unbalanced DC-link voltages in the four-switch three-phase inverter(FSTPI). In this paper, the improvement of output voltage waveforms is proposed with the aid of DC-link voltage ripple estimation. The proposed method can be implemented without the additional voltage sensor. The proposed method applied to the permanent magnet synchronous motor (PMSM) is simulated and experimented in order to verify its feasibility.

Keywords

References

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