Evaluation of applying retaining shield rotor for high-speed interior permanent magnet motors


This paper proposes a novel rotor structure for high-speed interior permanent magnet motors to overcome huge centrifugal forces under high-speed operation. Instead of the conventional axial stacking of silicon-steel laminations, the retaining shield rotor is inter-stacked by high-strength stainless-steel plates to enhance the rotor strength against the huge centrifugal force. Both mechanical characteristics and electromagnetic behaviors of the retaining shield rotor are analyzed using finite-element method in this paper. Prototypes and experimental results are demonstrated to evaluate the performance. The analysis and test results show that the proposed retaining shield rotor could effectively enhance the rotor strength without a significant impact on the electromagnetic performance, while some design constraints should be compromised.

Publication DOI: https://doi.org/10.1109/TMAG.2014.2347040
Divisions: College of Engineering & Physical Sciences
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Uncontrolled Keywords: finite-element method,high-speed interior permanent magnet motor,mechanical analysis,retaining shelf rotor
Full Text Link: http://ieeexplo ... rnumber=7093469
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PURE Output Type: Article
Published Date: 2015-03
Accepted Date: 2014-08-04
Submitted Date: 2014-05-14
Authors: Zhang, Jiancheng
Chen, Wei
Huang, Xiaoyan
Fang, Youtong
Zhang, Jian
Ma, Jien
Cao, Wen (ORCID Profile 0000-0002-8133-3020)



Version: Accepted Version

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