Fault-Tolerant Control for Single-phase Open-circuit and Short-circuit Fault in Five-phase PMSM with Third-order Harmonic Back EMF Using Coefficients Reconfiguration

Research output: Journal PublicationArticlepeer-review

Abstract

For a five-phase permanent magnet synchronous machine (PMSM), the third-order harmonic back EMF is increased by changing the shape of the permanent magnet for increasing average torque in healthy operation. Additionally, in the open-circuit (OC) and short-circuit (SC) faults, the effect of injected third-order harmonic back EMF also needs to be considered. Therefore, this paper proposes a fault-tolerant control method with original transformation matrixes and coefficients reconfiguration in fundamental and third-order harmonic subspaces for both single-phase OC and SC faults. Fault tolerance can be applied by reconfiguring the relative coefficients after an OC or SC fault occurs, depending on the type of fault. Besides, the proposed method aims to optimize the OC fault tolerance strategies and effectively solve the single-phase SC fault, considering the influence in the third-order harmonic back EMF. According to experimental results, the torque fluctuation after applying the proposed method is similar to that in the healthy stage and much lower than that using most fault-tolerant control methods without considering the third-order harmonic back EMF.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalIEEE Transactions on Energy Conversion
DOIs
Publication statusAccepted/In press - 2023

Keywords

  • Circuit faults
  • Coefficients reconfiguration
  • Fault tolerance
  • Fault tolerant control
  • Fault tolerant systems
  • Fluctuations
  • Harmonic analysis
  • Impedance
  • Open-circuit fault
  • Short-circuit fault
  • Third-order harmonic back EMF
  • Torque

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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