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Electric machine and method to retrofit electric machine

A fan and rotor technology, applied in the field of motors and modified motors, can solve the problem that the temperature of the cooling fluid is not optimal

Active Publication Date: 2013-09-25
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the temperature of the cooling fluid is not optimal

Method used

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  • Electric machine and method to retrofit electric machine
  • Electric machine and method to retrofit electric machine
  • Electric machine and method to retrofit electric machine

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Experimental program
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Effect test

Embodiment Construction

[0046] Throughout the several views, like reference numerals denote like or corresponding parts below.

[0047] The electric machine 1 may be a generator such as a turbo generator (i.e. a synchronous generator connected to a gas turbine or a steam turbine), a hydroelectric generator (i.e. a synchronous generator connected to a water turbine), a different type of generator (e.g. , asynchronous generator), synchronous or asynchronous electric motor, etc.

[0048] The motor 1 includes a stator 2 and a rotor 3 . The stator 2 and / or the rotor 3 have a cooling circuit which may comprise channels (like channel 7 in the figures), but in a different example the cooling circuit may comprise only the gap 19 between the stator 2 and the rotor 3 and Passages to recirculate the cooling fluid like the transverse passages 26 shown in the figures. In addition, the cooler 8 is provided only when necessary. The stator 2 and the rotor 3 are accommodated in a casing 4 which also contains coolin...

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PUM

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Abstract

The invention discloses an electric machine and a method to retrofit the electric machine. The electric machine (1) comprises a stator (2), a rotor (3), a cooling circuit for the stator (2) and / or rotor (3), fans (20) for cooling fluid circulation. The fans (20) are separated from the rotor (3).

Description

technical field [0001] The present disclosure relates to electric machines and methods of retrofitting electric machines. [0002] The electric machine may be a generator such as a synchronous generator, an electric motor or other different rotating electric machines. Background technique [0003] refer to Figure 9 , the rotary electric machine 1 has a stator 2 and a rotor 3 housed in a housing 4 . A shaft 5 extends from each end of the rotor 3 . The stator 2 as well as the rotor 3 are usually provided with a cooling circuit for taking away the heat generated during operation. [0004] The cooling circuit generally comprises passages for cooling fluid through the stator 2 and rotor 3 and coolers 8 for cooling the cooling fluid. The cooling fluid is the fluid contained in the housing 4 and can be air, hydrogen, argon or a different fluid. In addition, the motor also has one or more fans 9 to circulate the cooling fluid. [0005] The fan 9 is connected to the shaft 5 suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/04H02K1/20H02K1/32H02K15/00
CPCH02K15/0006H02K9/12H02K9/18Y10T29/49009H02K9/04
Inventor T.M.德格拉夫
Owner GENERAL ELECTRIC TECH GMBH