HEAT MANAGEMENT OF ROTOR END COIL

Title:

HEAT MANAGEMENT OF ROTOR END COIL

Document Type and Number:

Japanese Patent JP2005185095

Kind Code:

A

Abstract:

To provide a method and system for cooling the terminal winding of a rotor field coil in the machine such as a gas cooling type generator.

A machine (10) comprises a rotor (12) equipped with (a) coils (14) axially extending in a terminal winding region (26), (b) a plurality of voids (20, 36, and 38) among the coils (14) in the terminal winding region (26), and (c) a plurality of spacers (16) placed among the coils (14). A ventilation groove (30) comprising an inlet (32) and an outlet (34) is formed in the rotor (12) with at least some of the coils (14) containing at least one of the ventilation grooves (30). The ventilation groove (30) forms at least one gas flowing channel, from at least one first void (38) to (i) second void (36), or (ii) at least one of different parts of the first void (38).

Inventors:

MOELEKER PIET
GERSTLER WILLIAM DWIGHT
GARG JIVTESH

Application Number:

JP2004366145A

Publication Date:

July 07, 2005

Filing Date:

December 17, 2004

Export Citation:

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Assignee:

GEN ELECTRIC

International Classes:

H02K1/32; H02K3/24; H02K3/50; H02K5/12; H02K9/00; H02K9/08; (IPC1-7): H02K9/08; H02K3/24; H02K5/12

Attorney, Agent or Firm:

Kenichi Matsumoto
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa

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