Calculation Model of Armature Reaction Magnetic Field of Interior Permanent Magnet Synchronous Motor with Segmented Skewed Poles

Yuansheng An, Conggan Ma, Nic Zhang, Yue Guo, Michele Degano, Qiongyao Li, Shengsen Zhou

Research output: Contribution to journalArticlepeer-review

11 Citations (SciVal)
125 Downloads (Pure)


In an interior permanent magnet synchronous motor (IPMSM) with segmented skewed poles, the armature reaction magnetic field (AR-MF) changes nonlinearly due to the saturation of the rotor magnetic barrier. Meanwhile, this varies under different excitation currents. As a result, it is difficult to be calculated by means of analytical methods. In this paper, the calculation model of AR-MF of IPMSM is first established by vector superposition method, without considering the saturation effect of rotor and the slotting effect of stator. In the second step, the virtual magnetic field of the rotor is introduced to quantitatively calculate the influence of local inhomogeneous saturation on the AR-MF. The latter is derived by combining both the subdomain method and equivalent magnetic circuit method. The complex relative permeance is also introduced to establish the AR-MF accounting for the stator slotting effect. To validate the AR-MF calculation method proposed, an 8-pole 48-slot IPMSM with segmented skewed poles is considered as a case study, showing a comparison by both with finite element (FE) results and the electromagnetic torque measured on a test bench. The model proposed in this paper shows high accuracy and fast computation with respect to FE analysis.
Original languageEnglish
Pages (from-to)1115 - 1123
Number of pages9
JournalIEEE Transactions on Energy Conversion
Issue number2
Early online date27 Oct 2021
Publication statusPublished - 30 Jun 2022

Bibliographical note

Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grants 51975141 and 51605112, in part by the Natural Science Foundation of Shandong Province under Grant ZR2015EQ020, and in part by the 2018 Open Fund of State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise & Safety Control under Grant 2018-03.

Publisher Copyright:
© 1986-2012 IEEE.


  • Interior permanent magnet synchronous motor
  • armature reaction magnetic field
  • local inhomogeneous saturation
  • segmented skewed poles
  • virtual magnetic field of rotor magnetic barrier

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Calculation Model of Armature Reaction Magnetic Field of Interior Permanent Magnet Synchronous Motor with Segmented Skewed Poles'. Together they form a unique fingerprint.

Cite this