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Analysis of semipermeable containment sleeve technology for high-speed permanent magnet machines

Lookup NU author(s): Dr Rafal Wrobel


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This paper presents an alternative permanent magnet rotor containment technology. The use of a semipermeable material in a laminated structure is shown to result in a significant improvement in magnetic loading for a given thickness of containment compared to the use of magnetically inert materials such as carbon fiber or Inconel, while minimizing eddy current losses in the containment layer. An analytical model is presented for determining the air-gap field delivered from a permanent magnet array with a semipermeable containment. The analysis is validated through finite element analysis. The fabrication of a prototype machine is detailed and the results presented show good agreement with the analysis. The validated modeling process is used to assess the potential of the new technology. © 2012 IEEE.

Publication metadata

Author(s): Yon JM, Mellor PH, Wrobel R, Booker JD, Burrow SG

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Energy Conversion

Year: 2012

Volume: 27

Issue: 3

Pages: 646-653

Print publication date: 01/09/2012

Online publication date: 15/06/2012

ISSN (print): 0885-8969

ISSN (electronic): 1558-0059

Publisher: IEEE


DOI: 10.1109/TEC.2012.2202232


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