Second-order terminal sliding mode control of five-phase IPMSM with super twisting observer under demagnetisation fault, By Sajjad Shoja-Majidabad

Research

Title	Second-order terminal sliding mode control of five-phase IPMSM with super twisting observer under demagnetisation fault
Type	Article
Keywords	five-phase IPMSM, super twisting observer, second order observer, fault tolerant drive, demagnetisation fault, second-order sliding mode controller, high order sliding mode, terminal sliding mode
Researchers	Yaser Zafari، Sajjad Shoja-Majidabad

Abstract

This paper deals with demagnetisation fault detection and tolerance for five-phase interior permanent magnet synchronous motors through a second-order sliding mode controller/ observer. At the beginning, a super twisting flux-linkage observer is proposed to cope with the chattering problem. This observer estimates the flux-linkage through stator estimated currents. Further, a novel second-order terminal sliding mode controller is developed for mechanical speed control in the presence of the detected demagnetisation fault. Finally, various simulations validate the feasibility and effectiveness of the proposed controller/observer for a five-phase interior permanent magnet synchronous motor.