EMC performance improving device of DC power supply

A DC power supply and performance technology, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as waste of resources, and achieve the effects of saving costs, meeting voltage sags, and excellent performance

Inactive Publication Date: 2016-12-14
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these problems arise during product testing or in operation, it is often a waste of a lot of resources to organize analysis, solve, and take countermeasures

Method used

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  • EMC performance improving device of DC power supply
  • EMC performance improving device of DC power supply

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0025] Such as figure 1 As shown, the EMC performance improvement device of the DC power supply of this embodiment includes a DC filter unit, and also includes a surge suppression unit, an anti-reverse connection circuit unit and an RC charging circuit unit; a surge suppression unit, a DC filter unit, and an anti-reverse connection circuit The unit and the RC charging circuit unit are connected sequentially. In this embodiment, an overcurrent protection unit is also included, and the overcurrent protection unit is connected with the surge suppression unit.

[0026] In this embodiment, the overcurrent protection unit is a fuse unit F1, and the fuse unit F1 is connected in series on the DC bus at the input end of the DC filter unit. The insurance unit F1 is a se...

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PUM

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Abstract

The invention discloses an EMC performance improving device of a DC power supply. The EMC performance improving device comprises a DC filtering unit, a surge suppressing unit, an anti-reversal-connection circuit unit and an RC charging loop unit. The surge suppressing unit, the DC filtering unit, the anti-reversal-connection circuit unit and the RC charging loop unit are successively connected. The EMC performance improving device performs functions of effectively suppressing peak surge voltage, preventing circuit over-current, preventing overvoltage damage of a back-grade circuit, and satisfying requirements in voltage temporary drop, intermediate interruption and voltage change resistance. Furthermore the EMC performance improving device has advantages of simple circuit structure, high reliability, high integration degree, high convenience in mounting, high cost saving effect, etc.

Description

technical field [0001] The invention relates to the field of power quality of DC power supplies, in particular to an EMC performance improving device for DC power supplies. Background technique [0002] The core control unit of the rolling stock converter product is generally provided with 110V DC by the battery, and its input voltage range is 66V ~ 154V. [0003] At present, most rail vehicles use advanced converter products and various advanced control networks, signal automatic driving systems and other equipment. Most of the core control units of these vehicle equipment have DC power supply, such as DC110V level, DC74V level voltage power supply. The external interface of these DC power supplies is usually the key to product design. If the interface design is unreasonable, it will cause a series of interference and anti-interference problems, which will affect the normal operation of the product. In the slightest, it will cause signal error and shutdown of the system, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44
CPCH02M1/44
Inventor 羊利芬刘长清颜艳娇
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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