Back-EMF Harmonic Analysis and Fault-Tolerant Control of Flux-Switching Permanent-Magnet Machine With Redundancy

• Published in: IEEE transactions on industrial electronics (1982) Vol. 58; no. 5; pp. 1926 - 1935
• Main Authors: Zhao, Wenxiang, Cheng, Ming, Hua, Wei, Jia, Hongyun, Cao, Ruiwu
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2011; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Brushless machines; Cosimulation; Density; Electric circuits; Electromagnetic coupling; Fault tolerance; fault-tolerant drive; Fourier analysis; Harmonic analysis; Machine windings; Magnetic analysis; Motor drives; Motors; Redundancy; Redundant; stator-permanent-magnet (PM) machine; Stators; Strategy; Topology; Winding
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2010.2050758

A flux-switching permanent-magnet (PM) (FSPM) machine is a new class of stator-PM brushless machines, which offers the advantages of high reliability, high power density, and high efficiency. In this paper, by employing redundant winding in the existing FSPM machine topology, a new redundant FSPM (R-FSPM) machine is proposed for a fault-tolerant operation of critical applications. The redundant winding configuration is analyzed, and the corresponding suitable control strategy for the postfault operation is proposed. The electromagnetic performance of the R-FSPM motor drive under normal and fault conditions is analyzed by using a cosimulation method coupling magnetic and electrical circuit solvers. Finally, a 12-stator-tooth/10-rotor-pole R-FSPM machine is prototyped for verification. Both simulation and experimental results are presented, verifying the fault-tolerant characteristic of the proposed motor drive.