Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Efficiency Improvement of VVCF-Induction Motor Drives with Counter EMF Estimation

역기전력 추정에 의한 VVCF-유도전동기 시스템의 운전효율개선

  • 문상천 (광운대학교 전기공학과) ;
  • 이승철 (광운대학교 전기공학과) ;
  • 정승기 (광운대학교 전기공학과)
  • Published : 1995.11.18
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Abstract

This paper proposes the efficiency improvement method of vvcf-induction motor drives, which operates always at rated speed, regardless of load conditions, with counter emf estimation. The counter emf is estimated by detecting the fundamental component of motor input current, which is employed in speed control algorithm through the comparison with the actual counter emf during the nonconduction interval. The input power reduction by speed control is confirmed through simulations and experimental results.

Keywords