Comprehensive Diagnosis and Tolerance Strategies for Electrical Faults and Sensor Faults in Dual Three-Phase PMSM Drives

Wang, X, Wang, Z, Xu, Z, Cheng, M, Wang, W and Hu, Y ORCID: 0000-0002-1007-1617 (2018) Comprehensive Diagnosis and Tolerance Strategies for Electrical Faults and Sensor Faults in Dual Three-Phase PMSM Drives. IEEE Transactions on Power Electronics, 34 (7). pp. 6669-6684.

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Abstract

IEEE In this paper, fault diagnosis and tolerant control strategies have been studied comprehensively for dual-three phase PMSM drives to improve the reliability. Based on direct torque control (DTC) with space vector modulation (SVM), a series of diagnostic and tolerant control methods have been proposed for five types of faults, namely speed-sensor fault, DC-link voltage-sensor fault, current-sensor fault, open-phase fault and open-switch fault. Firstly, diagnosis and tolerant schemes are proposed for speed-sensor fault by estimating the rotor angle speed with the rotating speed of stator flux. Secondly, diagnosis and tolerant schemes are proposed for DC-link voltage-sensor fault by combining the current model based stator flux observer with the voltage model based stator flux observer. Thirdly, a three-step method is designed to diagnose three types of faults related to current signals, namely current-sensor fault, open-phase fault and open-switch fault simultaneously. A vector space decomposition (VSD) based current estimation method is proposed to achieve fault-tolerant control for the current-sensor fault, and the voltage compensation based fault-tolerant control is presented for both open-phase fault and open-switch fault. The experiments have been taken on a laboratory prototype to verify the effectiveness of the proposed fault diagnosis and tolerance schemes.

Item Type:	Article
Uncontrolled Keywords:	Dual three-phase permanent-magnet synchronous motor (PMSM), direct torque control, electrical fault, fault diagnosis, fault-tolerant control, sensor fault
Depositing User:	Symplectic Admin
Date Deposited:	03 Dec 2018 09:15
Last Modified:	17 Mar 2024 01:14
DOI:	10.1109/TPEL.2018.2876400
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3029350