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Stator cooling

  • US 6,069,424 A
  • Filed: 11/13/1997
  • Issued: 05/30/2000
  • Est. Priority Date: 05/02/1996
  • Status: Expired due to Term
First Claim
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1. An energy storage apparatus comprising:

  • a rotor;

    a stator;

    said stator including a bobbin having a cylindrical shape and open at each end;

    at least one fin extending longitudinally on an exterior surface of said bobbin;

    at least one cooling slot adjacent said fin;

    a phase winding longitudinally and circumferentially encircling said bobbin;

    said winding including an end turn at an end of said bobbin;

    said at least one fin separating said winding; and

    at least one cooling passage extending circumferentially through said end turn for transporting a cooling fluid therethrough to cool said winding.

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