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

The Korean Institute of Power Electronics (전력전자학회)
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Disturbance Observer-based Current Measurement Offset Error Compensation in Vector-controlled SPMSM Drives

표면 부착형 동기 전동기 벡터 제어에서의 외란 관측기 기반 전류 측정 오프셋 오차 보상 방법

  • Lee, Sang-Min (Dept. of Mechatronics Engineering, Incheon Nat'l Univ) ;
  • Lee, Kibok (Dept. of Smart Mobility Engineering, Inha Univ)
  • Received : 2022.03.12
  • Accepted : 2022.04.11
  • Published : 2022.10.20
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Abstract

In vector-controlled drive systems, the current measurement offset error causes unwanted torque ripple, resulting in speed and torque control performance degradation. The current measurement offset error is caused by various factors, including thermal drift. This study proposes a simple DC offset error compensation method for a surface permanent magnet motor based on a disturbance observer. The disturbance observer is designed in the stationary reference frame. The proposed method uses only the measured current and machine parameters without additional hardware. The effect of parameter variations is analyzed, and the performance of the current measurement offset error compensation method is validated using simulation and experimental results.

Keywords

Acknowledgement

본 논문은 2021년 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2021R1F1A1056095). 본 논문은 인하대학교 교내연구비 지원에 의하여 연구되었음.

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