The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of Field Current ripple Compensating Method by d-axis Flux-linkage in WRSM

권선계자형 동기전동기의 d축 쇄교자속에 의한 계자전류리플 보상 기법 개발

  • Hwang, Dae-Yeon (School of Energy Engineering, Kyungpook National University) ;
  • Gu, Bon-Gwan (School of Energy Engineering, Kyungpook National University)
  • Received : 2018.06.01
  • Accepted : 2018.08.15
  • Published : 2018.09.01
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Abstract

Recently, owing to environmental problems and instability of rare earth resources market, non-rare earth electric motors are attracting attention. As a non-rare earth motor type, a wound rotor synchronous motor(WRSM) has high power density and wide driving range further it can reduce loss by field current control during field weakening control at high speed. However, since the d-axis flux of the WRSM is coupled with the rotor circuit, the fluctuation in the d-axis flux linkage affects the rotor circuit, which causes ripple of the field current and torque. In this paper, we propose the field current ripple compensation method by injecting the feedforward voltage. the proposed compensating method was demonstrated by simulation and experiments.

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References

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