Multi-objective Optimization Design of a Segmented Asymmetric V-Type Interior Permanent Magnet Synchronous Motor

A segmented asymmetric V-type permanent magnet structure is proposed to address the issues of high output torque ripple and large cogging torque in traditional permanent magnet synchronous motors. Firstly, the relationship between the pole-span angles of the segmented asymmetric V-type permanent mag...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2024-11, p.1-1
Main Authors: Wang, Luyao, Zhang, Xueyi, Wu, Jinke, Wang, Mingjun, Hu, Wenjing, Geng, Huihui, Pang, Xingzhe
Format: Article
Language:English
Subjects:
asymmetric structure
Bridges
Forging
interior permanent magnet synchronous motor
Magnetic cores
Magnetic flux
multi-objective optimization
Permanent magnets
pole segmentation
Rotors
Saturation magnetization
Stator cores
Torque
Torque measurement
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Summary:A segmented asymmetric V-type permanent magnet structure is proposed to address the issues of high output torque ripple and large cogging torque in traditional permanent magnet synchronous motors. Firstly, the relationship between the pole-span angles of the segmented asymmetric V-type permanent magnet structure and the output torque, torque ripple, and cogging torque is investigated. Then, the rationality of the segmented asymmetric V-type permanent magnet structure and the correctness of the theoretical derivation are verified by finite element simulation. Subsequently, with the optimization objectives of increasing the average output torque of the motor, reducing the torque ripple, and decreasing the cogging torque, the optimal pole-span angle combination of the motor is determined by using the Pareto frontier distribution and the weight analysis method. The effectiveness of the optimized design is finally verified by finite element simulation and prototype tests. The results reveal that the segmented asymmetric V-type permanent magnet structure can ensure ample output torque while having low cogging torque and torque ripple in output characteristics.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2024.3499366