Title :
Remedial Brushless AC Operation of Fault-Tolerant Doubly Salient Permanent-Magnet Motor Drives
Author :
Zhao, Wenxiang ; Chau, K.T. ; Cheng, Ming ; Ji, Jinghua ; Zhu, Xiaoyong
Author_Institution :
Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
The doubly salient permanent-magnet (DSPM) machine is a new class of stator-PM brushless machines, which inherently offers the fault-tolerant feature. In this paper, a new operation strategy is proposed and implemented for fault-tolerant DSPM motor drives. The key is to operate the DSPM motor drive in a remedial brushless ac (BLAC) mode under the open-circuit fault condition, while operating in the conventional brushless dc mode under normal condition. Both cosimulation and experimental results confirm that the proposed remedial BLAC operation can maintain the average torque, reduce the torque ripple, and retain the self-starting capability under the open-circuit fault.
Keywords :
DC motor drives; brushless DC motors; fault tolerance; permanent magnet motors; BLAC mode; average torque ripple; conventional brushless dc mode; doubly salient permanent-magnet motor drives; fault-tolerant DSPM motor drives; open-circuit fault condition; remedial brushless AC operation; self-starting capability; stator-PM brushless machines; Brushless ac (BLAC); brushless dc (BLDC); cosimulation; fault-tolerant machine; permanent-magnet (PM) machine;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2009.2033824