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Electromagnetic wire for wind driven generator

A wind turbine and electromagnetic wire technology, applied in the field of electromagnetic wire, can solve the problems of high price, failure to meet the corona resistance requirements of wind turbines, and restrictions on the development and utilization of wind resources, so as to improve the corona resistance level and ensure the use The effect of longevity

Inactive Publication Date: 2011-09-07
江苏豪威富电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The two technical solutions disclosed in the above-mentioned patent documents cannot make the electromagnetic wire have an ideal corona resistance effect, because no matter whether it is a mica tape or a composite insulating tape made of polyimide film and mica, it cannot meet the requirements of high-power, such as mega Corona resistance requirements for watt-level wind turbines
Therefore, at present, the electromagnetic wires used in my country's megawatt-level wind turbines are basically monopolized by foreign companies, and the price is extremely expensive. It is precisely because of this factor that the development and utilization of my country's wind resources have been restricted to a large extent.

Method used

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Examples

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Effect test

Embodiment 1

[0019] please see figure 1 , provides a copper conductor 1 (also called a bare copper conductor) that is not limited by a specific length and is flat, that is, the cross-sectional shape is rectangular. In this embodiment, the width of the conductor 1 is 3mm, while the thickness is 1mm. The corona-resistant polyimide film 2 is wrapped in an overlapping manner on the surface of the conductor 1, and the surface of the corona-resistant polyimide film 2 facing the conductor 1 has a fluorine-coated layer 21, and the fluorine of the fluorine-coated layer 21 is a fluorine material It is polyperfluoroethylene propylene (also known as fluorine 46), and the corona-resistant polyimide film is sintered on the conductor 1 by sintering, so that the corona-resistant polyimide film 2 and the conductor 1 are firmly integrated . Corona-resistant polyimide film 2 is preferably but not limited to using the sintered film of the single-sided FCR type produced and sold by China Ningbo Jinshan Elect...

Embodiment 2

[0021] Only change the width of the conductor 1 to 16mm and the thickness to 5.5mm; change the thickness of the corona-resistant polyimide film 2 to 0.038mm and the overlap ratio to 55%; change the first and second reinforcing mica tapes The thicknesses of 3 and 4 are both changed to 0.08mm, and the overlap rate is changed to 33%. All the other are the same as the description to embodiment 1.

Embodiment 3

[0023] Only change the width of the conductor 1 to 8mm and the thickness to 2.5mm; change the thickness of the corona-resistant polyimide film 2 to 0.036mm and the overlap ratio to 60%; change the first and second reinforcing mica tapes The thicknesses of 3 and 4 are both changed to 0.075mm, and the overlap rate is changed to 40%. All the other are the same as the description to embodiment 1.

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Abstract

The invention relates to an electromagnetic wire for a wind driven generator, which belongs to the technical field of high voltage motor accessories. The electromagnetic wire comprises a conductor, a corona resistant polyimide thin film which is wound outside the conductor, a first reinforced mica tape wound outside the corona resistant polyimide thin film and a second reinforced mica tape wound outside the first reinforced mica tape. The invention has the advantages of improving the corona resistant level obviously and ensuring the service life of the wind driven generator by adopting the corona resistant polyimide thin film which is wound outside the conductor and winding the first reinforced mica tape and the second reinforced mica tape outside the corona resistant polyimide thin film in sequence.

Description

technical field [0001] The invention belongs to the technical field of high-voltage motor accessories, and in particular relates to an electromagnetic wire for a wind power generator. Background technique [0002] Because wind resources are recognized as cheap and environmentally friendly resources, people pay more and more attention to and use them, especially with the sharp decline of non-renewable resources such as oil, coal and natural gas, which are regarded as strategic resources, countries are paying more and more attention to them. The pace of development and application of solar and wind energy is accelerating. Compared with the United States, Japan and Europe, the development and utilization of wind resources in my country started relatively late, and the scale is relatively small. However, in recent years it has been growing at an alarming rate. [0003] The electromagnetic wire is an important part of the wind turbine, even called the heart part. Since the elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/04H01B7/02H02K3/04
Inventor 秦宇
Owner 江苏豪威富电气股份有限公司