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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.
Author(s): Yon JM, Mellor PH, Wrobel R, Booker JD, Burrow SG
Publication type: Article
Publication status: Published
Journal: IEEE Transactions on Energy Conversion
Print publication date: 01/09/2012
Online publication date: 15/06/2012
ISSN (print): 0885-8969
ISSN (electronic): 1558-0059
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