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Elastic insulation component for wedging up winding of electric machine, especially stator winding

A technology for stator windings and components, which is applied to electrical components, electric components, windings, etc., and can solve problems such as loose windings

Inactive Publication Date: 2008-04-09
ALSTOM (SWITZERLAND) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the work is disturbed for a short time at high temperature, this flow process is serious, so that the loosening of the winding occurs

Method used

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  • Elastic insulation component for wedging up winding of electric machine, especially stator winding
  • Elastic insulation component for wedging up winding of electric machine, especially stator winding
  • Elastic insulation component for wedging up winding of electric machine, especially stator winding

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Embodiment Construction

[0030] figure 1 and figure 2 A first preferred embodiment of the insulating material element according to the invention in the construction of the slot connection wedge 10 is shown in cross-section and in a partially sectioned top view. The groove connecting wedge 10 is formed as a flat elongated strip and is limited laterally by two V-shaped longitudinal sides 13, 14, so that a prismatic cross-section ( figure 1 ), which is generally and characteristically used for slot joint wedges. The slot wedge 10 contains a flat strip-shaped metal spring core 11 which is surrounded on all sides by a sheath 12 of insulating material which brings the core into direct contact with the stacked plates of the stator and thereby prevents Hazard of stray currents with hot spots and a large number of panel connections. The metal spring core 11 preferably has a simple rectangular cross-section and has a thickness of a few millimeters, in particular in the range of 2 to 3 mm. It preferably con...

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Abstract

The elastic isolation element (10) has a strip-shaped metal spring core (11) that is enclosed on all sides by a casing (12) of insulating material. The core consists of a nonmagnetic, sprung metal, pref. a stainless steel. Its thickness is a few mm., pref. 2 or 3 mm. The core has an arrangement for limiting induced eddy currents. An Independent claim is also included for an application of an isolation element for wedging a coil in the groove of a plate packet.

Description

technical field [0001] The invention relates to the technical field of rotating electric machines. The invention relates to elastic insulating elements for wedging the windings of an electrical machine, in particular the stator windings, in grooves in the sheet metal contained therefor. Background technique [0002] Such insulating elements are disclosed, for example, in the specifications US-A-3,949,255 or US-A-4,200,816. [0003] Elastic insulating elements are located especially in the stator of a rotating electric machine to elastically fix (wedge) the stator windings in the slots of the sheet material. The stator winding is generally an insulated conductor bundle with an insulating cross-section, which is inserted with a small gap into the slots of the stator. In order to ensure the fixation of the winding in the groove, the wedging pressure enables the winding to be free from looseness and vibrations by means of the specific substance of the winding and by the electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/48H02K3/487
CPCH02K3/487
Inventor T·鲍曼R·约霍J·厄斯特黑尔德
Owner ALSTOM (SWITZERLAND) LTD
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