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Transformer and winding structure thereof

A winding structure and transformer technology, which is applied in the field of transformers, can solve problems such as failure to achieve reinforced insulation, difficulty in meeting partial discharge requirements of transformers, etc., and achieve the effect of increasing insulation thickness

Active Publication Date: 2021-01-12
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a transformer and its winding structure to solve the problem in the prior art that the photovoltaic high-voltage system transformer cannot achieve reinforced insulation due to its own partial discharge detection is difficult to meet the partial discharge requirements

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  • Transformer and winding structure thereof
  • Transformer and winding structure thereof
  • Transformer and winding structure thereof

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0036] In this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. an actual relationship or order. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements inc...

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Abstract

The invention provides a transformer and a winding structure thereof. In the winding structure of the transformer, a reinforced insulation winding, all basic insulation windings and all strong currentwindings are wound along a framework of a main structure of the transformer in a layered manner; moreover, at least one basic insulation winding is respectively wound in front of and behind the reinforced insulation winding, so that at least one basic insulation winding is wound between the reinforced insulation winding and any strong current winding, and the insulation thickness between the strong current winding and the reinforced insulation winding is increased. Therefore, it is significant for reducing the discharge capacity of the partial discharge test of the transformer, and the problem that in the prior art, the partial discharge detection of the transformer in a photovoltaic high-voltage system is difficult to meet the partial discharge requirement, and the reinforced insulationcannot be realized is solved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a transformer and its winding structure. Background technique [0002] In the photovoltaic safety standard, the voltage with a decisive voltage level higher than DVC-A (DC voltage ≤ 60V, AC voltage rms ≤ 25V, AC voltage peak ≤ 35.4V) is regarded as unsafe voltage, referred to as strong voltage; in practice In applications, circuits that are directly connected to strong electricity or separated only by functional insulation are also regarded as strong electricity; and if the human body is directly exposed to strong electricity, there will be a risk of electric shock. Therefore, for the sake of human safety, shells or barriers can be added around electrical appliances, and the power supply windings that supply power to conductive components such as external communication interfaces can also be insulated, such as photovoltaic inverters (the voltage of the battery panel string i...

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Application Information

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IPC IPC(8): H01F27/28H01F27/32
CPCH01F27/324H01F27/32H01F27/28
Inventor 王富王航李随军朱梅梅
Owner SUNGROW POWER SUPPLY CO LTD