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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Vibration reduction Design of Permanent Magnet Motor Using Level Set Based Shape Optimization Method

Department of Automotive Engineering, Hanyang University, Seoul, 133-791, Korea
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World Electr. Veh. J. 2015, 7(2), 201-205; https://doi.org/10.3390/wevj7020201
Published: 26 June 2015
This paper presents a new optimization method to design a rotor structure for a permanent magnet motor that can reduce vibration. The optimization problem is formulated with a multi-objective function to minimize the fluctuation of the radial magnetic force and the torque ripple. To obtain the optimal rotor shape consisting of a permanent magnet and ferromagnetic material, a multiple level set model is employed to express the structural boundaries and magnetic properties of each material. The updating process of the level set function based on the adjoint sensitivity and the time evolutional equation makes it possible to obtain a novel rotor configuration of the motor. To verify the usefulness of the proposed method, a rotor design example of the surface-mounted permanent magnet motor for electric power steering system is performed.
Keywords: Permanent magnet motor; vibration reduction; rotor design; magnet force; torque ripple; level set method Permanent magnet motor; vibration reduction; rotor design; magnet force; torque ripple; level set method
MDPI and ACS Style

Lim, S.; Min, S.; Hong, J.-P. Vibration reduction Design of Permanent Magnet Motor Using Level Set Based Shape Optimization Method. World Electr. Veh. J. 2015, 7, 201-205.

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