Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Development of Totally Enclosed Permanent Magnet Synchronous Motor
Minoru KONDOYasuhiro SHIMIZUJunya KAWAMURA
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2008 Volume 49 Issue 1 Pages 16-19

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Abstract

The development of a 235 kW totally enclosed permanent magnet synchronous motor for next-generation suburban trains is presented in this paper. A novel cooling structure was proposed, and its effectiveness was verified in a temperature rise test. An internal permanent magnet structure optimized to increase reluctance torque was used to reduce the maximum current. The results of testing and calculation show that this new motor can reduce the energy consumption of the train by 12% and acoustic noise emission by 7 dB.

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© 2008 by Railway Technical Research Institute
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