Electromagnetic leakage suppression method and system for additionally arranging filter at power panel output port

A technology of output filter and input filter, which is applied in the field of anti-electromagnetic leakage, can solve problems such as not being well applicable, and achieve the effect of reasonable structure and convenient use

Inactive Publication Date: 2020-07-31
EAST CHINA INST OF COMPUTING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent is not well applicable to the electromagnetic leakage suppression of adding a filter to the output port of the power board

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  • Electromagnetic leakage suppression method and system for additionally arranging filter at power panel output port
  • Electromagnetic leakage suppression method and system for additionally arranging filter at power panel output port
  • Electromagnetic leakage suppression method and system for additionally arranging filter at power panel output port

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[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0027] Such as Figure 1-3 As shown, according to an electromagnetic leakage suppression method for installing a filter at the output port of the power board provided by the present invention, it includes: Step S1: constructing an input filter and an output filter before and after the power board, and first converting the input filter to the power board. After the signal is filtered; the signal is filtered again after being converted by the power board; the output filter includes: the inductance of the ...

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Abstract

The invention provides an electromagnetic leakage suppression method and system for additionally arranging a filter at a power panel output port. The method comprises the steps of S1 building an inputfilter and an output filter in front of and behind a power panel, and carrying out the filtering of a signal before the conversion of the power panel, wherein the signal is filtered again after beingconverted by the power panel, and the output filter comprises an inductor of the output filter and a capacitor of the output filter; S2 setting up an LC filter for the output filter; S3 selecting theinductor of the mH level as the inductor of the output filter; and S4 selecting an nF-level capacitor as the capacitor of the output filter. The solution provided by the invention can solve the problem of electromagnetic leakage caused by the switching power supply of the power panel in a complex electromagnetic environment.

Description

technical field [0001] The present invention relates to the technical field of electromagnetic leakage prevention, in particular to an electromagnetic leakage suppression method and system for installing a filter at the output port of a power board, especially an electromagnetic leakage prevention method for installing a filter at the output port of a power board suppression method. Background technique [0002] The operating frequency of the power switch is the main radiation source of the power board. Electromagnetic compatibility is an important technical indicator of electronic equipment. Power supply design and system design are very important factors. If the power supply is not well designed to generate electromagnetic radiation or is susceptible to external electromagnetic radiation interference, the stability and reliability of the power supply will be affected, and the electromagnetic compatibility of the large system will also be greatly affected at the same time. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44
CPCH02M1/44
Inventor 蔡敏潘淼波徐标时刚
Owner EAST CHINA INST OF COMPUTING TECH
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