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Design to reduce electromagnetic vibration in integral-slot SPM machine considering force modulation effect

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Abstract

In this paper, two different designs, with dummy slots and bread-loaf magnets techniques, are presented to reduce the electromagnetic vibration in integral-slot surface-mounted permanent-magnet (SPM) machines. Firstly, the stator slotting effect on the magnetic field modulation and radial force modulation is investigated. It reveals the amplitude of the modulated magnetic field and modulated radial force is greatly affected by the slot opening effect, while the spatial order is closely associated with the slot numbers. Subsequently, the dummy slots and bread-loaf magnets design are developed for a 36-slot/12-pole integral-slot SPM machine to reduce the electromagnetic vibration. Finally, two SPM machines, with conventional and bread-loaf magnets, are manufactured. Experimental tests are carried out to validate the theoretical analyses.

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Authors and Affiliations

  1. School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, 212013, China

    ShengDao Zhu, Wen**ang Zhao, **gHua Ji & GuoHai Liu

  2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore

    Christopher H. T. Lee

Authors
  1. ShengDao Zhu
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  2. Wen**ang Zhao
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  3. **gHua Ji
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  4. GuoHai Liu
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  5. Christopher H. T. Lee
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Corresponding author

Correspondence to Wen**ang Zhao.

Additional information

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51991383 and 52025073).

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Zhu, S., Zhao, W., Ji, J. et al. Design to reduce electromagnetic vibration in integral-slot SPM machine considering force modulation effect. Sci. China Technol. Sci. 65, 1867–1877 (2022). https://doi.org/10.1007/s11431-022-2089-y

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  • DOI: https://doi.org/10.1007/s11431-022-2089-y

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