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Analytical Performance Modelling of Slotted Surface-Mounted Permanent Magnet Machines with Rotor Eccentricity

  • Yan, Bo (School of Electrical Engineering, Shandong Univerity) ;
  • Wang, Xiuhe (School of Electrical Engineering, Shandong Univerity) ;
  • Yang, Yubo (School of Electrical Engineering, Shandong Univerity)
  • Received : 2016.06.30
  • Accepted : 2016.12.12
  • Published : 2017.03.01

Abstract

This paper presents an improved subdomain method to predict the magnet field distributions and electromagnetic performance of the surface-mounted permanent magnet (SPM) machines with static or dynamic eccentricity. Conventional subdomain models are either based on the scalar magnet potential to predict the rotor eccentricity effect or dependent on the magnetic vector potential without considering the eccentric rotor. In this paper, both the magnetic vector potential and the perturbation theory are introduced in order to accurately calculate the effect of rotor eccentricity on the open-circuit and armature reaction performance. The calculation results are presented and validated by the corresponding finite-element method (FEM) results.

Keywords

FEM;Magnetic vector potential;Rotor eccentricity;SPM machine;Subdomain method

Acknowledgement

Supported by : National Natural Science Foundation of China

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