Method for manufacturing insulation structure of rotor coil of wind driven generator

A wind turbine and rotor coil technology, applied in the direction of laying solid insulation, etc., can solve the problems of accelerated motor insulation aging, achieve the effect of reducing volume and weight, improving reliability and service life, and strengthening the ability of insulation damage

Inactive Publication Date: 2011-08-17
JIANGSU ICE CITY INSULATION MATERIALS STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the wind turbine is also subjected to mechanical force, electromagnetic force, and vibration during operation, which puts the generator insulation under alternating stress and accelerates the aging of the motor insulation.

Method used

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  • Method for manufacturing insulation structure of rotor coil of wind driven generator
  • Method for manufacturing insulation structure of rotor coil of wind driven generator
  • Method for manufacturing insulation structure of rotor coil of wind driven generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Depend on figure 1 It is known that on the formed rotor bare copper coil 1, a layer of 0.025mm thick domestic corona-resistant polyimide film tape 2 is half-stacked; Mica tape 3 with less glue reinforced on one side of the film; then half-stacked with a layer of 0.025mm thick domestic corona-resistant polyimide film tape 2; then half-stacked with a layer of 0.11mm thick domestic corona-resistant polyimide Mica tape 3 with less glue reinforced on one side of the film; and a layer of activated polytetrafluoroethylene film tape 4 with a thickness of 0.05 mm and an insulation thickness of 0.74 mm.

Embodiment 2

[0016] Embodiment 2: by figure 2 It is known that on the two formed rotor bare copper coils 1, a layer of 0.025mm thick domestic corona-resistant polyimide film tape 2 is half-stacked respectively; One-sided reinforcement of imide film with less glue mica tape 3; another layer of 0.025mm thick domestic corona-resistant polyimide film tape 2 is half-stacked; Mica tape 3 with less glue reinforced by imide film on one side; then two coils covered with insulation are superimposed together, and a layer of 0.05mm thick activated polytetrafluoroethylene film tape is half-folded on the outside 4. The insulation thickness is 0.74mm.

[0017] figure 1 , figure 2 middle:

[0018] a, b are the thickness and width of copper flat wire respectively;

[0019] a+0.54 is the thickness of a copper flat wire wrapped with ground insulation;

[0020] b+0.54 is the width of a copper flat wire after wrapping the straight part of the coil with ground insulation;

[0021] 2(a+0.54)+0.2 is the ...

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Abstract

The invention provides an insulation structure of a rotor coil of a wind driven generator, wherein the insulation structure is manufactured by a method comprising the following steps of: setting a multi-layer corona resistant with polyimide film tape and a mica tape in single-side reinforcing with a multi-layer corona resistant with polyimide film by means of half wrapping; and then setting a layer of polytetrafluoroethylene film tape by means of half wrapping. In the insulation structure provided by the invention, the insulation thickness is reduced from 1.52 mm to 0.74 m, the electrical strength is high, the breakdown voltage is more than 15 KV, and the safety margin of electric property is large. The insulation structure provided by the invention has the advantages that the corona resistant service life is long, the requirements of power supplying performances of a transducer can be met, and the insulation structure also has a high resistance to salt fog corrosion and a high capability of other chemical materials in insulation erosion; the insulation structure is suitable for installing in a rotor coil of the double-fed wind-driven generators of megawatt and several megawatts grades on the sea, the coast and the inland areas with large day and night temperature difference.

Description

technical field [0001] The invention belongs to the technical field of wind power generator rotor manufacturing, and is suitable for rotor coils of megawatt and several megawatt double-fed wind power generators. Background technique [0002] Wind power generator is a new type of clean energy, which is of great significance to reduce the consumption of non-renewable petrochemical energy and reduce the pollution of carbon dioxide and sulfur dioxide to the environment. It is a new energy project that is vigorously developed by the state. [0003] Because most of the large wind turbines are installed in my country's three northern regions and offshore and coastal areas. The three-north area has high terrain, low temperature, large temperature difference between day and night, and strong wind and sand; sea and coastal areas have serious salt spray corrosion and high air humidity. The relative humidity is generally 95%, and the maximum is 100%. The damage is great. At the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/10
Inventor 朱艾成朱浩许惠麟郭振报王乃卫刘发喜
Owner JIANGSU ICE CITY INSULATION MATERIALS STOCK
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