Improved SVPWM Fault-Tolerant Control Strategy for Five-Phase Permanent-Magnet Motor

Liang Xu, Wenxiang Zhao and Guohai Liu
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Liang Xu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Wenxiang Zhao: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Guohai Liu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2019, vol. 12, issue 24, 1-15

Abstract: Multiphase permanent-magnet motors have received a lot of attention in the past few years owing to the merits of high power density, high efficiency and high fault-tolerant capability. Particularly, high fault tolerance is very desirable for safety-critical applications. This paper proposes an improved space vector pulse-width modulation (SVPWM) fault-tolerant control for five-phase permanent-magnet motors. First, generalized five-phase SVPWM fault-tolerant control is deduced and analyzed based on single-phase open-circuit fault, thus obtaining various SVPWM fault-tolerant control strategies and yielding a greatly increased capacity to enhance fault-tolerant performance of motor. Then, an improved SVPWM fault-tolerant control strategy with increased DC bus voltage utilization and reduced current harmonics is proposed and compared with the traditional one. Last, effectiveness and superiority of the proposed control strategy is verified by both simulation and experimental results on a five-phase permanent-magnet motor.

Keywords: fault-tolerant control; space vector pulse-width; five-phase motor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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