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Moisture-proof protective layer for motor end windings

A technology of end windings and protective layers, applied in the shape/style/structure of windings, winding insulation, electrical components, etc., can solve the problems of easy crack formation, motor damage, etc., so as to prolong the service life and reduce the difficulty of cleaning. Effect

Inactive Publication Date: 2012-02-01
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known protective layer is prone to cracks, for example in the event of temperature changes, at least partially delaminated, allowing moisture to penetrate through the resulting cracks, causing considerable damage to the motor

Method used

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  • Moisture-proof protective layer for motor end windings
  • Moisture-proof protective layer for motor end windings
  • Moisture-proof protective layer for motor end windings

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] same parts in figure 1 and figure 2 are denoted by the same reference symbols.

[0027] figure 1 An exemplary embodiment of an electric machine 1 is shown in partial cross-section. The sectional view of the motor 1 is in fact a sectional view of a stator 3 of the motor 1 taken along the axis of rotation 2 , but only the upper half of the stator 3 is shown. figure 1 The area 4 with the stator core laminations and the electrical coil conductors embedded in the slots is not shown in detail, but only this active area is shown schematically. The two end windings 5 ​​and 6 which the stator 3 has are respectively arranged on both axial sides of the active region 4 .

[0028] The end windings 5 ​​and 6 consist of a plurality of electrical conductor arrangements 7 leading out of the stator laminate core in the direction of the axis of rotation 2 . The coil winding is formed by a suitable electrical connection of the conductor arrangement 7 in the region of the end windings...

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PUM

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Abstract

The invention relates to a protection layer (13) of the moisture-proof type for an end winding of an electrical machine. The protective layer is made of a moisture-proof protective layer material, which has a nanostructured surface (8) after coating on the end windings, so as to produce a water contact angle of at least 120°.

Description

technical field [0001] The invention relates to a protective layer for the end winding of an electrical machine. Background technique [0002] Such protective layers, which are arranged on the end windings of an electrical machine (for example in the form of an electric motor or generator), have the effect of electrical insulation, mechanical protection, chemical protection or moisture protection. Known protective layers are produced by partial multiple impregnation with filling resins and impregnating varnishes, or by casting with inorganic filling resins (casting resins). [0003] DE 3133734 C2 describes a protective layer made of a hard coating of silicone elastomer, for example an organomodified silicone rubber material curable at room temperature. This known protective layer is prone to cracks, for example, when the temperature changes, and delamination occurs at least locally, allowing moisture to penetrate through the cracks generated, causing a large degree of damag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/30
CPCH02K3/38H02K3/44Y10T428/24802Y10T428/24893
Inventor 伯恩哈德·克劳斯纳亚历山大·莫勒
Owner SIEMENS AG
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