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Assembly method for liquid cooled permanent magnet rotor

  • US 8,296,927 B2
  • Filed: 09/01/2011
  • Issued: 10/30/2012
  • Est. Priority Date: 12/30/2008
  • Status: Active Grant
First Claim
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1. A method of assembling a permanent magnet rotor for an electrical generator comprising:

  • mounting an inner core component having a plurality of longitudinally extending core passages coaxially on a rotor shaft defining a first longitudinally extending shaft passage and a second longitudinally extending shaft passage;

    positioning a permanent magnet outer core component circumferentially about the inner core component;

    fluidly connecting a first rotor cooling circuit segment which includes the first longitudinally extending shaft passage with a second rotor cooling circuit segment which includes the plurality of longitudinally extending core passages via sealingly coupling a first liquid containment cover to a first axial end of the inner core component at a first mounting location which is radially inward of a cylindrical outer surface of the inner core component; and

    fluidly connecting the second rotor cooling circuit segment with a third rotor cooling circuit segment which includes the second longitudinally extending shaft passage via sealingly coupling a second liquid containment cover to a second axial end of the inner core component at a second mounting location which is radially inward of the cylindrical outer surface of the inner core component.

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