Transactions of China Electrotechnical Society  2019, Vol. 34 Issue (15): 3124-3135    DOI: 10.19595/j.cnki.1000-6753.tces.180749
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The Stator Force Calculation Model for Surface Mounted Permanent Magnet Motor under the Action of Armature Magnetic Field
LüYajun, ChengSiwei, Wang Dong, Chen Junquan
National Key Laboratory of Science and Technology on Vessel Integrated Power System Navel University of Engineering Wuhan430033 China

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Abstract  The main source of vibration and acoustic noise of low-speed permanent magnet synchronous motors (PMSMs) is the alternating electromagnetic force of the stator, which is caused by the permanent magnetic field and the armature magnetic field. This paper proposes a stator force calculation model of a surface-mounted permanent magnet motor under the action of armature magnetic field. Taking the physical boundary of the stator and the conductor in the slot as the analysis object, the magnetic permeability distribution function of the stator tooth boundary is extracted through two-dimensional finite element analysis, and its relationship with the basic inductance parameters of the motor is deduced. According to the actual phase current of the motor, the magnetic density distribution and force distribution of the motor tooth boundary and the conductor in the slot are obtained by applying the superposition principle and the Maxwell stress tensor method. Finally, the correctness of the above calculation model is verified by two-dimensional finite element analysis.
Key words： Surface mount permanent magnet motor      armature magnetic field      electromagnetic vibration source      finite element analysis      the magnetic permeability distribution function     
Received: 03 May 2018      Published: 13 August 2019
PACS: TM351  
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