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

The Korean Institute of Power Electronics (전력전자학회)
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Standstill Identification of Magnetic Flux Saturation Model Including Cross-Saturation for Synchronous Motors

상호 포화를 포함한 자기저항 동기 전동기의 자속 포화 모델에 대한 정지 상태 추정 기법

  • Woo, Tae-gyeom (Dept. of Automotive Engineering (Automotive-Computer Convergence), Hanyang University) ;
  • Park, Sang-woo (Dept. of Automotive Engineering (Automotive-Computer Convergence), Hanyang University) ;
  • Choi, Seung-Cheol (Dept. of Automotive Engineering (Automotive-Computer Convergence), Hanyang University) ;
  • Yoon, Young-Doo (Dept. of Automotive Engineering, Hanyang University) ;
  • Lee, Hak-Jun (LS ELECTRIC Co., Ltd.) ;
  • Hong, Chanook (LS ELECTRIC Co., Ltd.) ;
  • Lee, Jeongjoon (LS ELECTRIC Co., Ltd.)
  • Received : 2021.01.31
  • Accepted : 2021.06.11
  • Published : 2021.10.20
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Abstract

A magnetic flux saturation model of Synchronous Reluctance Motors (SynRMs) and a parameter estimation method are proposed at standstill. The proposed magnetic flux model includes the nonlinear relationship between the current and the magnetic flux for self-saturation and cross-saturation. Voltage is injected at standstill to estimate the magnetic flux saturation model. Voltages are injected into the d-axis and q-axis to obtain data on self-saturation. Subsequently, voltages are simultaneously injected into the d-q axis to obtain data on cross-saturation. On the basis of the measured current and the calculated magnetic flux, the parameters of the proposed model are estimated using the least square method (LSM). Simulation and experiment were performed on a 1.5-kW SynRM to verify the proposed method. The proposed model can be used to create a high-efficiency operation table, a sensorless algorithm, and a current controller to improve the control performance of a motor.

Keywords

Acknowledgement

이 논문은 2021년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임. (No. 20193010025790)

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