University of Mohaghegh Ardabili Journal of Operation and Automation in Power Engineering 2322-4576 11 1 2023 04 01 Sensorless FOC Strategy for Current Sensor Faults in Three-Phase Induction ‎Motor Drives روش کنترل جهتدار میدان بدون حسگر برای خطاهای حسگر جریان در درایوهای موتور القایی سه فاز 1 10 1306 10.22098/joape.2022.9274.1648 EN A. Gholipour Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran M. Ghanbari Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran E. Alibeiki Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran M. Jannati Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran Journal Article 2021 07 23 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. https://joape.uma.ac.ir/article_1306_501353fb9850ba7d42702c347f6102da.pdf