Title:
MAGNETIC FIELD MODULATION TYPE RADIAL PERMANENT MAGNET ELECTRIC MOTOR HAVING HIGH MECHANICAL ROBUSTNESS, AND MULTI-HARMONIC OPTIMIZATION DESIGN METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/267111
Kind Code:
A1
Abstract:
Disclosed in the present invention are a magnetic field modulation type radial permanent magnet electric motor having high mechanical robustness, and a multi-harmonic optimization design method therefor. In order to enhance the mechanical robustness of a rotor of a traditional magnetic field modulation type radial permanent magnet electric motor, a magnetic field modulation type radial permanent magnet electric motor having an inverted T-shaped permanent magnet structure is provided. Since the proposed electric motor belongs to a magnetic field modulation electric motor having multiple operating harmonics, a multi-objective optimization design method based on air gap harmonics is provided. The specific implementation process comprises: analyzing an electric motor torque generation mechanism on the basis of a magnetic field modulation principle, and deducing formulae for torque and a torque ripple; according to the formulae for torque and a torque ripple, analyzing the contribution of air gap harmonics to the torque and the torque ripple, and selecting, as sub-objectives, a torque and a torque ripple generated by the air gap harmonics which have a relatively great effect; and then optimizing the sub-objectives by combining response surface analysis and a multi-objective bare-bones particle swarm algorithm, and finally, taking the optimization of the torque and the torque ripple of the electric motor both into consideration.
Inventors:
CHEN QIAN (CN)
LIAO JIHONG (CN)
ZHAO WENXIANG (CN)
LIU GUOHAI (CN)
XU GAOHONG (CN)
LIAO JIHONG (CN)
ZHAO WENXIANG (CN)
LIU GUOHAI (CN)
XU GAOHONG (CN)
Application Number:
PCT/CN2021/106643
Publication Date:
December 29, 2022
Filing Date:
July 16, 2021
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
H02K1/27; H02P21/30
Foreign References:
| CN111953167A | 2020-11-17 | |||
| CN109193985A | 2019-01-11 | |||
| US20190229573A1 | 2019-07-25 | |||
| CN111709167A | 2020-09-25 | |||
| CN102510149A | 2012-06-20 |
Other References:
CHEN QIAN, LIAO JIHONG, ZHAO WENXIANG, LIU GUOHAI, XU GAOHONG: "Robust optimization design of low-cost spoke-type permanent magnet motors with auxiliary salient poles", SCIENCE IN CHINA (SERIES E: INFORMATION SCIENCES), vol. 51, no. 6, 1 June 2021 (2021-06-01), pages 659 - 672, XP093016157, ISSN: 1674-7259, DOI: 10.1360/SST-2020-0274
JI JINGHUA, XIAOYUN PAN, WENXIANG ZHAO, TAO TAO: "Operation Principle Analysis of Air-gap Magnetic Field Modulation in Five-phase Fault-tolerant Flux-switching Permanent-magnet Motor", PROCEEDINGS OF THE CSEE, ZHONGGUO DIANJI GONGCHENG XUEHUI, CN, vol. 37, no. 21, 5 November 2017 (2017-11-05), CN , pages 6227 - 6236, XP055934159, ISSN: 0258-8013, DOI: 10.13334/j.0258-8013.pcsee.171105
JI JINGHUA, XIAOYUN PAN, WENXIANG ZHAO, TAO TAO: "Operation Principle Analysis of Air-gap Magnetic Field Modulation in Five-phase Fault-tolerant Flux-switching Permanent-magnet Motor", PROCEEDINGS OF THE CSEE, ZHONGGUO DIANJI GONGCHENG XUEHUI, CN, vol. 37, no. 21, 5 November 2017 (2017-11-05), CN , pages 6227 - 6236, XP055934159, ISSN: 0258-8013, DOI: 10.13334/j.0258-8013.pcsee.171105
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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