Optimization Analysis of Automotive Asymmetric Magnetic Pole Permanent Magnet Motor by Taguchi Method | Zendy

Wenchao Zhang | Zendy; Liwei Shi | Zendy; Kaiwen Liu | Zendy; Lintao Li | Zendy; Jianning Jing | Zendy

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Optimization Analysis of Automotive Asymmetric Magnetic Pole Permanent Magnet Motor by Taguchi Method

Author(s) -

Wenchao Zhang,

Liwei Shi,

Kaiwen Liu,

Lintao Li,

Jianning Jing

Publication year - 2021

Publication title -

international journal of rotating machinery

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.265

H-Index - 33

eISSN - 1026-7115

pISSN - 1023-621X

DOI - 10.1155/2021/6691574

Subject(s) - cogging torque , torque ripple , taguchi methods , magnet , control theory (sociology) , air gap (plumbing) , torque , magnetic circuit , computer science , finite element method , direct torque control , harmonics , materials science , physics , mechanical engineering , induction motor , engineering , voltage , composite material , control (management) , quantum mechanics , machine learning , artificial intelligence , thermodynamics

In order to improve the air-gap flux density of the permanent magnet synchronous motor and reduce the cogging torque, a novel structure with asymmetric magnetic poles for automobile was proposed. Based on the characteristics of the parallel magnetic circuit, the magnetic flux path diagram is established. And the equivalent magnetic circuit model is established by the equivalent magnetic circuit method. The Taguchi method is used to be a multiobjective optimization algorithm. The total harmonic distortion of the air-gap flux density is the first optimization goal. The second and third optimization goals are the cogging torque and the average of output torque, respectively. And the torque ripple is a constraint condition. The optimized parameter combination is obtained by the Taguchi method. Finite element simulation analysis and prototype test are carried out for the optimized motor structure. The results show that the total harmonic distortion of air-gap flux density is reduced by 36.7% comparing with the initial structure. The cogging torque is reduced by 26.0%. And the average output torque is increased by 4.8%.

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