Open-Phase Fault Tolerance Techniques of Five-Phase Dual-Rotor Permanent Magnet Synchronous Motor

Jing Zhao, Xu Gao, Bin Li, Xiangdong Liu and Xing Guan
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Jing Zhao: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Xu Gao: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Bin Li: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Xiangdong Liu: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Xing Guan: School of Automation, Beijing Institute of Technology, Beijing 100081, China

Energies, 2015, vol. 8, issue 11, 1-29

Abstract: Multi-phase motors are gaining more attention due to the advantages of good fault tolerance capability and high power density, etc. By applying dual-rotor technology to multi-phase machines, a five-phase dual-rotor permanent magnet synchronous motor (DRPMSM) is researched in this paper to further promote their torque density and fault tolerance capability. It has two rotors and two sets of stator windings, and it can adopt a series drive mode or parallel drive mode. The fault-tolerance capability of the five-phase DRPMSM is researched. All open circuit fault types and corresponding fault tolerance techniques in different drive modes are analyzed. A fault-tolerance control strategy of injecting currents containing a certain third harmonic component is proposed for five-phase DRPMSM to ensure performance after faults in the motor or drive circuit. For adjacent double-phase faults in the motor, based on where the additional degrees of freedom are used, two different fault-tolerance current calculation schemes are adopted and the torque results are compared. Decoupling of the inner motor and outer motor is investigated under fault-tolerant conditions in parallel drive mode. The finite element analysis (FMA) results and co-simulation results based on Simulink-Simplorer-Maxwell verify the effectiveness of the techniques.

Keywords: five-phase dual-rotor permanent magnet synchronous motor (PMSM); fault tolerant; drive mode; torque ripple; third harmonic currents; co-simulation (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: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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