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High isolation withstand voltage power supply manufacturing method

A manufacturing method and high isolation technology, applied in the direction of inductor/transformer/magnet manufacturing, coil manufacturing, circuit, etc., can solve the problems of inconvenient use and large product volume, and achieve high withstand voltage strength, high isolation strength, good isolation resistance. The effect of pressure

Active Publication Date: 2017-08-04
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there are isolation transformers and feedback transformers at the same time, if such products want to achieve a high isolation voltage, two transformers with a large volume are required, which will cause the product to have a large volume and cause inconvenience to use.

Method used

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Embodiment Construction

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and examples. However, the invention is not limited to the examples given.

[0031] An embodiment of the present invention aims to provide a high isolation and withstand voltage power supply, which requires high output power, precision and efficiency while ensuring high isolation strength and small volume.

[0032] In order to achieve this goal, this embodiment first finds a new way on the power supply circuit, abandoning the feedback mode of TL431 plus optocoupler and magnetic feedback common in the prior art, and adopting the self-feedback mode of the primary side, that is, removing the feedback mode of the optocoupler Or the path from the secondary side to the primary side in the magnetic feedback mode (remove TL431 and optocoupler in the feedback mode of TL431 plus optocoupler; remove the feedback transformer in magnetic feedback), change the output from one g...

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Abstract

The invention discloses a high-isolation voltage-resistant power supply manufacture method, and a manufacture method for a high-isolation voltage-resistant transformer which is the main component of the high-isolation voltage-resistant power supply, and belongs to the technical field of power electronics. According to the invention, the winding manner of the transformer is improved, a magnetic core, a winding wire, an insulated rubber tape and casting glue and the like of the transformer are pointedly selected, the transformer is subjected to dipping paint processing and encapsulation processing, and finally a transformer having a good isolation voltage-resistant capability is obtained. The high-isolation voltage-resistant power supply made by the transformer has a good isolation voltage-resistant capability as well, and is high in output power, precision and efficiency and small in size, and can satisfy the demands of all kinds of electric equipment in high-voltage occasions on the power supply.

Description

technical field [0001] The invention belongs to the technical field of power electronics, in particular, the invention relates to a manufacturing technology of a high-isolation withstand voltage power supply. Background technique [0002] At present, because high-voltage and high-power power tubes (IGBT, IGCT, etc.) are expensive and have a long supply cycle, many companies are considering using IGBT series connection to save costs. However, when IGBTs are used in series, the bus voltage is very high, which brings difficulties to the driving of IGBTs. At the same time, with the rise of the power supply voltage level, many electrical equipment cannot find a suitable high-isolation and withstand voltage power supply, so they have to increase the cost and use a bulky power frequency transformer to step down and use it. However, as people's requirements for power density are getting higher and higher, and the cost control of products is becoming more and more strict, the way of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/066H01F41/12H02M7/12
Inventor 辛甜卢文兵董长城侯凯骆健
Owner STATE GRID CORP OF CHINA
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