Measurement Error Analysis and Its Compensation for Phase Current of Permanent Magnet Synchronous Motor
Cai Zhiduan1, Wang Peiliang1 ,Xun Qian1, Jiang Yuanyuan2, Xun Boyang3
1.School of Engineering Huzhou University Huzhou 313000 China; 2.College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing 211106 China; 3.College of Mechanical and Electrical Engineering Inner Mongolia Agriculture University Huhhot 010018 China
Abstract:For permanent magnet synchronous motor,to reduce the measurement error of the phase current and meet the speed requirements of high performance,the measurement error analysis and its compensation for the phase current are completed in the paper.Firstly,the principle of the measurement errors is introduced,and the influence of the measurement errors on the performance of the closed-loop speed control system is analyzed.Then,a compensation strategy for the d-axis current in segmented integration is proposed.The d-axis current integration can get the error terms that is used for the compensation of the current measurement.Simulation and experimental results show that offset-errors and gain-errors will cause the oscillation of the torque and the speed with 1 time and 2 times angular frequencies.The compensation strategy can reduce the measurement errors greatly so as to reduce the periodic oscillation of the torque and the speed.
蔡志端,王培良,荀 倩,姜媛媛,荀博洋. 永磁同步电机相电流测量误差分析与补偿[J]. 电工技术学报, 2016, 31(23): 22-30.
Cai Zhiduan, Wang Peiliang ,Xun Qian, Jiang Yuanyuan, Xun Boyang. Measurement Error Analysis and Its Compensation for Phase Current of Permanent Magnet Synchronous Motor. Transactions of China Electrotechnical Society, 2016, 31(23): 22-30.
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