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Back iron cooling jacket of generator main stator

A main stator and generator technology, applied in the manufacture of stator/rotor bodies, electromechanical devices, electrical components, etc., can solve problems such as cumbersome machining

Active Publication Date: 2016-06-08
HAMILTON SUNDSTRAND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While effective, such machining is rather cumbersome as machining is required both before and after assembly of the main stator core

Method used

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  • Back iron cooling jacket of generator main stator
  • Back iron cooling jacket of generator main stator
  • Back iron cooling jacket of generator main stator

Examples

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Embodiment Construction

[0020] figure 1 Selected portions of an example generator 20 are schematically illustrated, which may be used to start a main propeller T, such as a gas turbine, or to generate electrical current when driven by the main propeller T. The generator 20 may generally include a power generation section 22 , a positive displacement pump 24 and a gearbox 26 therebetween, all contained within a common main housing assembly 28 . While a variable frequency generator (VFG) is illustrated in the disclosed examples, it should be understood that other generator systems, such as an integrated drive generator (IDG), would also benefit from this disclosure. These types of generators may be particularly suitable for aircraft applications.

[0021] In the disclosed, non-limiting embodiment, power generation portion 22 is a 3-phase machine comprising three machines 30 , 32 , and 34 mounted on a common rotor shaft 36 along axis A of rotation. The three machine stator assemblies 30B, 32B, 34B are...

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Abstract

A backiron cooling jacket for a main stator of a generator, comprising a sheet of material including arcuate notches on two opposite edges such that a butt joint therebetween defines a pin hole.

Description

technical field [0001] The present invention relates to generators, and more particularly to starter-generator internal oil management systems. Background technique [0002] Aircraft powered by gas turbines often include a mechanically driven auxiliary gearbox that connects auxiliary systems such as electric starter-generators or generators. [0003] High energy density aircraft generators utilize internal oil management systems. An internal oil management system provides supplemental cooling of the main stator of the generator through a backiron oil flow defined by oil grooves formed in the stator housing. Since the main stator is usually constructed as a bonded lamination pack, the main stator sleeve is usually installed between the lamination pack and the oil cooling slots to ensure that oil does not leak through the lamination pack into the air gap of the generator, and oil leaks into the generator The engine air gap will increase the loss of the engine due to the visc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/12H02K5/04H02K15/02
CPCH02K1/185H02K2205/12Y10T29/49009H02K5/203
Inventor G·C·莱默斯E·A·布鲁斯特A·P·格罗斯科普夫
Owner HAMILTON SUNDSTRAND CORP