A transformer and its winding structure

A winding structure and transformer technology, applied in the field of transformers, can solve the problems of inability to achieve reinforced insulation, and it is difficult for transformers to meet partial discharge requirements, and achieve the effect of increasing insulation thickness
CN112216483BActive Publication Date: 2022-04-08SUNGROW POWER SUPPLY CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SUNGROW POWER SUPPLY CO LTD
Publication Date
2022-04-08

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Abstract

The application provides a transformer and its winding structure. In the winding structure of the transformer, the reinforced insulation winding, all the basic insulation windings and all the high-voltage windings are layered and wound along the skeleton of the transformer main structure; and, adjacent to the reinforced insulation winding, there are at least one basic insulation Winding, so that at least one basic insulation winding is wound between the reinforced insulation winding and any strong current winding, so that the insulation thickness between the strong current winding and the reinforced insulation winding increases, and the discharge capacity of the partial discharge test of the transformer The reduction has a significant effect, so it solves the problem in the prior art that the transformer in the photovoltaic high-voltage system cannot achieve reinforced insulation due to its own partial discharge detection is difficult to meet the partial discharge requirements.
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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 โ‰ค 60V, AC voltage rms โ‰ค 25V, AC voltage peak โ‰ค 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...

Claims

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