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Insulation structure of winding rotor coil

A technology of insulation structure and wound rotor, applied in the shape/style/structure of winding insulation, etc., can solve the problem that F-class insulation cannot meet the actual use requirements, etc.

Pending Publication Date: 2017-11-07
ANHUI WEINENG MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the insulation structure of domestic wound rotor coils is mainly F-class, but for the special market demand of high temperature resistance index (above 180 ℃), F-class insulation can no longer meet the actual use requirements

Method used

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  • Insulation structure of winding rotor coil
  • Insulation structure of winding rotor coil
  • Insulation structure of winding rotor coil

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Experimental program
Comparison scheme
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Embodiment Construction

[0010] combined with Figures 1 to 4 The present invention is further described:

[0011] An insulating structure for a wound rotor coil, comprising a flat copper coil 10, the flat copper coil includes an inter-slot segment 11 and an outer-slot segment 12, and the inter-slot segment 11 is covered with silicone powder mica tapes 3, The heat-shrinkable polyester film tape 4, the outer section 12 of the groove is covered with a polyimide film tape 5, an organic silicon powder mica tape 3, and an alkali-free glass ribbon 6 from the inside to the outside. The silicone powder mica tape 3 has good flexibility, high electrical, electrothermal and mechanical properties, and is used as the first layer of the inter-slot section 11 and the second layer of the outer-slot section 12 to form a continuous coating , to ensure that there is no gap between the slot section 11 and the slot outer section 12, even if it is bent, there will be no leakage; It is a heat-shrinkable packaging material...

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Abstract

The invention discloses an insulation structure of a winding rotor coil. The structure comprises a flat copper coil. The flat copper coil comprises a segment between grooves and an outer groove segment. An organic silicon powder mica tape and a heat shrinkage polyester film band wrap the segment between grooves from inside to outside. A polyimide film band, the organic silicon powder mica tape and a alkali-free glass fiber tape wrap the outer groove segment from inside to outside. A high temperature resistance material is adopted to wrap the flat copper coil so as to form an H grade insulation structure which can bear a high temperature that is above 180 DEG C; the adopted material possesses good performance and a uniform thickness so that an occupation volume of the flat copper coil is not increased; the structure and a rotor groove can form good interpenetration cooperation; and during usage, insulation and high temperature resistance performance is ensured, and reliable operation of a motor is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electric motors, and particularly relates to an insulating structure for a wound rotor coil. Background technique [0002] At present, high-voltage wound rotor motors are mainly used in cement industry, mine hoisting and other places that require high starting torque and require frequent starting. In the prior art, high-voltage wound rotor motors all use wound rotor coils with double-layer hard windings. The rotor is provided with a rotor slot and the slot is semi-closed. The slot wedge is inserted into the slot to realize the embedding of the wound rotor coil. The number of winding turns of the wound rotor coil is small, and each slot and each layer generally use a coil copper flat wire. Since the windings in the same slot do not necessarily belong to the same phase, the two layers of windings must be insulated. However, the insulation structure of domestic wound rotor coils is mainly F-class, but for ...

Claims

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Application Information

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IPC IPC(8): H02K3/34
CPCH02K3/34
Inventor 曹婷婷杨江飞高福祥施小豹李志明汪玲
Owner ANHUI WEINENG MOTOR
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