Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors
To optimize the modulated vibration generated by the integer-slot interior permanent magnet synchronous motor (IPMSM), a stepwise segmented skewed pole method was proposed, using an 8-pole 48-slot IPMSM as an example. First, the vibration characteristics of the motor were studied, and the theoretica...
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2025-05-01
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| author | Huawei Wu Shaokang Lu Xiaoyuan Zhu Weiye Li Jianping Peng |
| author_facet | Huawei Wu Shaokang Lu Xiaoyuan Zhu Weiye Li Jianping Peng |
| author_sort | Huawei Wu |
| collection | DOAJ |
| description | To optimize the modulated vibration generated by the integer-slot interior permanent magnet synchronous motor (IPMSM), a stepwise segmented skewed pole method was proposed, using an 8-pole 48-slot IPMSM as an example. First, the vibration characteristics of the motor were studied, and the theoretical mechanisms of the magnetic field modulation effect and radial force modulation effect were explained. The study showed that high-order radial forces can excite larger low-order vibrations under the influence of radial force modulation. Then, in response to the axial spacing in the linear skewed pole structure when canceling the 48th-order radial force, a stepwise skewed pole structure was proposed. The suppression mechanism of this skewed pole structure on the motor’s modulated vibration was analyzed, and the optimization effect of different segment numbers on the motor’s vibration acceleration at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>12</mn><msub><mrow><mi>f</mi></mrow><mrow><mi>e</mi></mrow></msub></mrow></semantics></math></inline-formula> was discussed. Finally, models for the motor’s magnetic field, structural field, and acoustic field before and after skewing were established, and simulations were conducted to compare the magnitudes of the radial forces at each order and their vibration noise performance. The results showed that after stepwise skewed pole optimization, the radial force that excites the modulated vibration was reduced by 68%, the maximum vibration acceleration on the casing surface was reduced by 84%, and the overall noise was reduced by 7.491 dB, effectively suppressing electromagnetic vibration noise. |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-05-01 |
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| series | World Electric Vehicle Journal |
| spelling | doaj-art-d41fd9e1a4aa46bc946c0796ada689622025-08-20T03:47:58ZengMDPI AGWorld Electric Vehicle Journal2032-66532025-05-0116527510.3390/wevj16050275Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot MotorsHuawei Wu0Shaokang Lu1Xiaoyuan Zhu2Weiye Li3Jianping Peng4Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang 441053, ChinaHubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang 441053, ChinaSchool of Mechanical Engineering, Southeast University, Nanjing 211000, ChinaXiangyang CRRC Motor Technology Co., Ltd., Xiangyang 441047, ChinaDongfeng Electric Drive Systems Co., Ltd., Xiangyang 441106, ChinaTo optimize the modulated vibration generated by the integer-slot interior permanent magnet synchronous motor (IPMSM), a stepwise segmented skewed pole method was proposed, using an 8-pole 48-slot IPMSM as an example. First, the vibration characteristics of the motor were studied, and the theoretical mechanisms of the magnetic field modulation effect and radial force modulation effect were explained. The study showed that high-order radial forces can excite larger low-order vibrations under the influence of radial force modulation. Then, in response to the axial spacing in the linear skewed pole structure when canceling the 48th-order radial force, a stepwise skewed pole structure was proposed. The suppression mechanism of this skewed pole structure on the motor’s modulated vibration was analyzed, and the optimization effect of different segment numbers on the motor’s vibration acceleration at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>12</mn><msub><mrow><mi>f</mi></mrow><mrow><mi>e</mi></mrow></msub></mrow></semantics></math></inline-formula> was discussed. Finally, models for the motor’s magnetic field, structural field, and acoustic field before and after skewing were established, and simulations were conducted to compare the magnitudes of the radial forces at each order and their vibration noise performance. The results showed that after stepwise skewed pole optimization, the radial force that excites the modulated vibration was reduced by 68%, the maximum vibration acceleration on the casing surface was reduced by 84%, and the overall noise was reduced by 7.491 dB, effectively suppressing electromagnetic vibration noise.https://www.mdpi.com/2032-6653/16/5/275interior slot permanent magnet synchronous motorstepwise segmented slanted polefinite element methodmodulated vibration |
| spellingShingle | Huawei Wu Shaokang Lu Xiaoyuan Zhu Weiye Li Jianping Peng Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors World Electric Vehicle Journal interior slot permanent magnet synchronous motor stepwise segmented slanted pole finite element method modulated vibration |
| title | Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors |
| title_full | Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors |
| title_fullStr | Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors |
| title_full_unstemmed | Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors |
| title_short | Stepwise Segmented Skewed Pole Modulation Vibration Reduction Design for Integer-Slot Motors |
| title_sort | stepwise segmented skewed pole modulation vibration reduction design for integer slot motors |
| topic | interior slot permanent magnet synchronous motor stepwise segmented slanted pole finite element method modulated vibration |
| url | https://www.mdpi.com/2032-6653/16/5/275 |
| work_keys_str_mv | AT huaweiwu stepwisesegmentedskewedpolemodulationvibrationreductiondesignforintegerslotmotors AT shaokanglu stepwisesegmentedskewedpolemodulationvibrationreductiondesignforintegerslotmotors AT xiaoyuanzhu stepwisesegmentedskewedpolemodulationvibrationreductiondesignforintegerslotmotors AT weiyeli stepwisesegmentedskewedpolemodulationvibrationreductiondesignforintegerslotmotors AT jianpingpeng stepwisesegmentedskewedpolemodulationvibrationreductiondesignforintegerslotmotors |