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Energies 2018, 11(9), 2375; https://doi.org/10.3390/en11092375

Analytical Calculation of Armature Reaction Field of the Interior Permanent Magnet Motor

1
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130000, China
2
China Automotive Technology and Research Center Co., Ltd., Tianjin 300300, China
*
Author to whom correspondence should be addressed.
Received: 8 July 2018 / Revised: 16 August 2018 / Accepted: 18 August 2018 / Published: 9 September 2018
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
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Abstract

The energy crisis and environmental concerns worldwide have helped usher in the age of electric vehicles (EVs) and hybrid EVs (HEVs). The interior permanent magnet motors (IPMMs) are widely used in these vehicles. The analysis of the armature reaction field is the most critical issue in the study of IPMMs since it determines the characters of torque, efficiency, vibration, and the radiated acoustic noise. This paper provides a calculation method of the armature reaction magnetic field (ARMF) of an IPMM. First, the formulas of ARMF without magnetic barrier are derived. Second, the relative permeance function of an IPMM is calculated. Third, the analytical solution of the ARMF of an IPMM is derived by applying the armature reaction magnetic field with unsaturated rotor multiplied by relative permeance function. Finally, several results of comparisons between the calculation method proposed in this paper and the finite element method are presented. Based on the calculation method proposed in this paper, the magnetic barrier’s influence on the ARMF is studied. The spatial harmonic orders and time harmonic orders of the ARMF of IPMM are revealed respectively. View Full-Text
Keywords: interior permanent magnet motor; armature reaction field; analytical model; relative permeance function interior permanent magnet motor; armature reaction field; analytical model; relative permeance function
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Ma, F.; Yin, H.; Wei, L.; Wu, L.; Gu, C. Analytical Calculation of Armature Reaction Field of the Interior Permanent Magnet Motor. Energies 2018, 11, 2375.

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