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Insulation of stator coil realized by shrinkage hose

A stator coil and hose technology, applied in the direction of coils, insulators, insulated conductors, etc., can solve problems such as motor failure, abrasive wear, cracks in stator coil insulation, etc., to achieve excellent performance and avoid wrinkles and cavities.

Inactive Publication Date: 2006-09-20
ALSTOM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in shear forces bonded between the conductor and the insulator, in addition there is a risk of abrasive wear on the interface surfaces between the insulator and the slot walls of the stator
Due to the high forces mentioned above, cracks may appear in the insulation of the stator coils, which is a potential short circuit
If a short circuit occurs, it may lead to the failure of the entire motor, thus requiring frequent or frequent repairs and high consumption costs

Method used

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  • Insulation of stator coil realized by shrinkage hose
  • Insulation of stator coil realized by shrinkage hose
  • Insulation of stator coil realized by shrinkage hose

Examples

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Embodiment Construction

[0031] In the accompanying drawings, only the most basic components and components for understanding the present invention are shown. Obviously, the method and equipment of the present invention can be realized in various ways, or made by those of ordinary skill in the art accordingly. Various modification schemes are proposed, however, all the above-mentioned ways and schemes do not deviate from the principles and teachings of the present invention.

[0032] Figure 1a is a sectional view of an insulated stator coil 60 , a rectangular conductor bar 2 surrounded by a shrink tube 64 . The wire rod itself is generally made up of a number of individual insulated conductors bundled together, in a coiled wire rod a portion of the individual conductors are twisted together, while in an uncoiled wire rod the individual conductors are not twisted, but laid parallel to each other, in the present invention, it is also possible to use a wire rod made of a single conductor with a circular...

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Abstract

Described is a method for the production of an insulated stator winding for rotating electrical machines, in particular, direct current machines and alternating current machines, whereby an insulated stator winding is produced that ensures adequate insulation over the intended life span of the electrical machine. The insulated stator winding is constructed of at least one electrically conductive conductor bar (2) with an essentially rectangular cross-section, whereby at least one electrically insulating shrink-on sleeve (64) with an essentially rectangular cross-section is applied to the periphery of the conductor bar (2) and then shrunk onto the conductor bar.

Description

technical field [0001] The invention relates to a method for insulating the stator coils of a rotating electric machine, in particular a direct current machine and an alternating current machine. Background technique [0002] Generally speaking, this kind of motor has a stator and a rotor, which are used to convert mechanical energy into electrical energy (generator), or vice versa, convert electrical energy into mechanical energy (motor). A voltage is generated, therefore, the conductors of the stator winding should be insulated so that no short circuit is allowed between the conductors of the stator. [0003] The stator coil of a rotating electrical machine can have various structures, one of which is to bundle a plurality of single conductors that are insulated from each other into a wire bundle. The conductor bundle thus formed is generally called a wire bar, and it has a so-called main insulation. When manufacturing the stator coil, the end faces of a plurality of lead...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00H02K15/10H01F5/06H01B7/02H01B17/58H02K3/04H02K3/32H02K3/34H02K15/04
CPCH02K3/345
Inventor T·鲍曼J·厄斯特赫尔德R·加斯帕里尼
Owner ALSTOM TECH LTD
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