The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Analysis of Flux Weakening Operating Regions for a PM Synchronous Motor in HEV by considering Back EMF Harmonics

HEV용 영구자석동기전동기의 유기전압 고조파를 고려한 약자속 운전 영역해석

  • Received : 2010.12.14
  • Accepted : 2011.01.07
  • Published : 2011.04.20
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Abstract

An interior permanent magnet synchronous motor(IPMSM) has been applied to the electric vehicle due to its high efficiency, compact volume, and wide operating speed ranges. This paper presents the analysis of the flux weakening operating regions at high speeds for the IPMSM that has back emf harmonics. The effect of the back emf harmonics on the motor speed and the maximum torque is analyzed. Also the dq currents for maximum torque operation under the voltage and the current limit conditions are analyzed. The conventional analysis and the presented analysis for the flux weakening operating regions are compared and the maximum torque - speeds characteristics for both analysis are verified through the experiment.

영구자석 매립형 동기전동기는 고효율, 소형화 및 넓은 가변속운전 등의 특성으로 인해 전기자동차에 적용되고 있다. 본 논문에서는 유기전압이 고조파를 함유하고 있는 영구자석 동기전동기에 대하여 고속운전 시 약자속 운전 영역의 해석에 대해 제안한다. 유기전압의 고조파가 전동기 속도와 최대토크에 미치는 영향을 해석하고 전압제한 및 전류제한 조건에서 최대토크 운전을 위한 dq 전류에 대해 분석한다. 약자속 운전영역에 대한 기존 및 제안된 해석결과를 비교하고 최대토크-속도 특성의 실험을 통하여 해석결과를 검증한다.

Keywords

References

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Cited by

  1. Torque Ripple Reduction based on Flux Linkage Harmonics Observer for an Interior PM Synchronous Motor including Back EMF Harmonics vol.18, pp.4, 2013, https://doi.org/10.6113/TKPE.2013.18.4.367
  2. Maximum Torque Operation of a PM Synchronous Motor for HEV under Parameter Variation vol.12, pp.11, 2011, https://doi.org/10.5762/KAIS.2011.12.11.5128