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Solid-state transformer

A solid-state transformer, isolation transformer technology, applied in fixed transformers, transformers, fixed transformers or mutual inductances, etc., can solve problems such as increasing process complexity, increasing volume, and difficulty in implementation, improving insulation performance and service life, and reducing localization. Discharge level, avoid the effect of uneven electric field

Active Publication Date: 2021-02-26
NR ELECTRIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

like figure 1 As shown, multiple isolation transformer cores connected to the ground at the same time will increase the insulation requirements of the system, and the wiring distance is long, making it difficult to implement
[0006] Chinese patent document CN106920661A provides a method for realizing electrical connection by pouring resistance between the iron core and the low-voltage winding of a high-frequency transformer. Because there is a voltage difference between the iron core and the low-voltage winding, loss will occur on the resistance, and the resistance pouring increases Increased process complexity and increased volume

Method used

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the specific implementation manners of the technical solutions of the present application will be described in more detail and clearly below in conjunction with the drawings and embodiments. However, the specific embodiments and examples described below are for the purpose of illustration only, rather than limiting the application. It only includes a part of the embodiments of the present application, but not all of the embodiments. Other embodiments obtained by those skilled in the art through various changes of the present application all belong to the scope of protection of the present application.

[0029] Generally, a solid-state transformer consists of a high-voltage stage (input stage), an isolation stage, and a low-voltage stage (output stage), which is a three-stage structure topology. The high-voltage side mostly uses multiple modules in s...

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Abstract

The invention provides a solid-state transformer. The solid-state transformer comprises a plurality of power units, each power unit comprises a high-voltage side module, a low-voltage side module andan isolation transformer; the isolation transformer comprises a high-voltage winding, a low-voltage winding and an iron core, and the high-voltage winding is wound on the iron core and is connected with the high-voltage side module; the low-voltage winding is wound on the iron core and is connected with the low-voltage side module; and the iron core is in nearby equipotential connection with the high-voltage side module or the low-voltage side module through a conducting medium so as to fix the suspension potential of the iron core.

Description

technical field [0001] The present application relates to the technical field of AC and DC distribution networks, in particular to a solid-state transformer. Background technique [0002] Solid State Transformer (SST for short), as a new type of power equipment, can combine power electronic conversion technology with high-frequency power conversion technology based on the principle of electromagnetic induction, and convert one kind of power characteristics into another. Electrical energy of electrical characteristics. After the solid-state transformer is applied to the power system, it will improve the power quality, improve the system stability, realize the flexible power transmission mode and the real-time control of the power flow in the power market. Therefore, as a specific implementation device for the operation and control of the Energy Internet, the solid-state transformer will become the core of the Energy Internet. [0003] In order to meet the application requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H01F30/06H01F27/30H01F27/26H01F27/32
CPCH02M5/4585H01F30/06H01F27/306H01F27/266H01F27/324H02M1/0083H01F27/343H01F27/022H02M3/285H02M1/0074H02M1/0064H02M3/33584H01F27/42H01F2038/006H02M3/33569H02M3/1582H02M5/458H02M1/0067H02M3/1584
Inventor 张中锋谢晔源曹冬明方太勋盛晓东杨晨连建阳
Owner NR ELECTRIC CO LTD