Sensorless FOC Strategy for Current Sensor Faults in Three-Phase Induction ‎Motor Drives

Journal of Operation and Automation in Power Engineering

A. Gholipour¹  M. Jannati¹  M. Ghanbari¹  E. Alibeiki¹ 

[1] Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran;

关键词: current sensor fault;    ekf;    flux observer;    sensorless control;    induction motor;   

DOI  :  10.22098/joape.2022.9274.1648

来源: DOAJ

【 摘 要 】

Current sensors are required in Field-Oriented Control (FOC) strategies of Three-Phase Induction Motor (TPIM) drives. Nevertheless, the current sensors are subject to different electrical/mechanical faults which reduce the safety and dependability of the drive system. Single phase current sensor Fault-Tolerant Control (FTC) for sensorless TPIM drives using flux observer and Extended Kalman Filter (EKF) is proposed in this research. In the suggested FTC scheme, current sensor fault detection is based on axes transformation, a logic circuit is served as the fault isolation and reconstruction of faulted currents are achieved through flux observer and EKF. The presented FTC system is capable of detecting and localizing the current sensor fault and switching the drive system to tolerant FOC mode without the rotor speed measurement. The effectiveness of the suggested FTC system is confirmed by experiments on a 0.75kW TPIM drive platform.

【 授权许可】

Unknown