Investigation on Phase Shift between Multiple Multiphase Windings in Flux-Switching Permanent Magnet Machines

Lingyun Shao, Wei Hua, Z. Q. Zhu, Wentao Huang, Zhongze Wu, Feng Li, Ming Cheng

Research output: Contribution to journalArticlepeer-review

20 Citations (SciVal)


Design rules of multiple multiphase winding configurations are investigated from the perspective of phase shift between adjacent winding sets in flux-switching permanent magnet (FSPM) machines. The relations between torque/rectified voltage and phase shift for any multiple multiphase winding topology are theoretically derived, directly showing the influence of phase shift on torque/rectified voltage harmonic components. It can be learned that the optimal phase shift for the lowest torque ripple and dc voltage oscillation depends on the winding types. Symmetrical winding is not always appropriate for any occasion. To verify the analytical results, the static characteristics of the dual three-phase, four three-phase, triplex three-phase, dual six-phase, and triplex four-phase FSPM machines with specific stator/rotor-pole combinations are studied by finite-element (FE) analysis. The FE-predicted dominant torque ripple and rectified voltage pulsation components for symmetrical and asymmetric phase shifts are in good agreement with the theoretical derivation. Prototypes are built and tested to verify the analytical and FE results.

Original languageEnglish
Article number7842567
Pages (from-to)1958-1970
Number of pages13
JournalIEEE Transactions on Industry Applications
Issue number3
Publication statusPublished - 1 May 2017


  • Flux switching
  • multiphase winding
  • permanent magnet (PM)
  • phase shift
  • rectified voltage
  • torque ripple

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Investigation on Phase Shift between Multiple Multiphase Windings in Flux-Switching Permanent Magnet Machines'. Together they form a unique fingerprint.

Cite this