Rotor Position Detection and Error Compensation of Switched Reluctance Motor Based on Special Inductance Position
Xu Aide1, Ren Ping2, Chen Jiagui1, Zhu Jingwei2
1. College of Information Science and Technology Dalian Maritime University Dalian 116026 China; 2. College of Marine Electrical Engineering Dalian Maritime University Dalian 116026 China
Abstract：In sensorless control of the Switched Reluctance Motor (SRM) based on special position of inductance, inductance intersection point is affected by the magnetic saturation, which will cause inaccurate position estimation. To solve this problem, a control method with error compensation and an improved strategy for intersection offset are proposed. Under different load torques, angles of the intersections of inductance curves are measured. The function relationship between load torque and angle is established by Fourier fitting, then the angle error to be compensated is deduced. In the case of magnetic saturation, the error resulted from intersection offset can be reduced by error compensation to make position estimation more accurate. A three-phase 12/8 pole SRM was designed to verify the proposed method. The simulation and experimental results show that in the case of magnetic saturation, the new method can effectively reduce the error and estimate the rotor position more accurately.
许爱德, 任萍, 陈加贵, 朱景伟. 基于电感特殊位置点的开关磁阻电机转子位置检测及误差补偿[J]. 电工技术学报, 2020, 35(8): 1613-1623.
Xu Aide, Ren Ping, Chen Jiagui, Zhu Jingwei. Rotor Position Detection and Error Compensation of Switched Reluctance Motor Based on Special Inductance Position. Transactions of China Electrotechnical Society, 2020, 35(8): 1613-1623.
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2020, Vol. 35 
