title: Current Sensor Fault Reconstruction for PMSM Drives.
abstract: This paper deals with a current sensor fault reconstruction algorithm for the torque closed-loop drive system of an interior PMSM. First, sensor faults are equated to actuator ones by a new introduced state variable. Then, in αβ coordinates, based on the motor model with active flux linkage, a current observer is constructed with a specific sliding mode equivalent control methodology to eliminate the effects of unknown disturbances, and the phase current sensor faults are reconstructed by means of an adaptive method. Finally, an αβ axis current fault processing module is designed based on the reconstructed value. The feasibility and effectiveness of the proposed method are verified by simulation and experimental tests on the RT-LAB platform.
authors: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China. gangder@csu.edu.cn.|College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. gangder@csu.edu.cn.
authors: Gang
authors: G
authors: Huang
authors: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China. ypluo@csu.edu.cn.
authors: Yi-Ping
authors: YP
authors: Luo
authors: College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. zhangchangfan@263.net.
authors: Chang-Fan
authors: CF
authors: Zhang
authors: College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. hejing@263.net.
authors: Jing
authors: J
authors: He
authors: Hunan CSR Times Electric Vehicle Co., Ltd, Zhuzhou 412007, China. huangys@teg.cn.
authors: Yi-Shan
authors: YS
authors: Huang
keywords: active flux; permanent magnet synchronous motor (PMSM); reconstruction; sensors fault; sliding mode observers