Universal conducted interference filter for multi-port equalizing multilevel filtering

Abstract

The invention relates to a universal conducted interference filter for multi-port equalizing multilevel filtering. The universal conducted interference filter comprises a casing, at least one common mode choke, at least one differential mode capacitor plate, and at least one common mode capacitor plate. The universal conducted interference filter is characterized in that the common mode choke is an integral structure formed by respectively winding two magnetic rings on a copper bar for one circle, and the integral structure is connected with the pedestal of the casing; the differential mode capacitor plate is placed on a side surface of the common mode choke; the common mode capacitor plate is arranged below the common mode choke; and the differential mode capacitor plate and the common mode capacitor plate are connected with the front, intermediate and rear ends of the copper bar penetrating the two magnetic rings through cables to form a multi-port equalizing multilevel filtering structure. The universal conducted interference filter has simple structure and is convenient to install by designing the common mode choke into the integral structure. The number of magnetic rings in the common mode choke is 1 / 4 that of the conventional choke with the same inductance by winding the two magnetic rings on the copper bar for one circle, so that the common mode choke has the advantages of small size and light weight.

Description

technical field [0001] The invention relates to a conduction interference filter, in particular to a general conduction interference filter with multi-port equalization and multi-stage filtering. Background technique [0002] With the development of high-power power electronic devices, power electronic equipment is more and more widely used in many fields of national economy and national defense construction, especially the application of various independent systems composed of power electronic equipment is becoming more and more popular. However, the equipment in this type of system is a typical nonlinear equipment, which will inevitably generate a large amount of electromagnetic interference. These interferences are mainly conduction interference, with long duration, wide spectrum distribution, and large influence range, which hinder the normal operation of electrical and electronic equipment. Work. [0003] However, the effective suppression of conducted interference has...

AI Technical Summary

Problems solved by technology

However, the equipment in this type of system is a typical nonlinear equipment, which will inevitably generate a large amount of electromagnetic interference. These interferences are mainly conduction interference, with long duration, wide spectrum distribution, and large influence range, which hinder the normal operation of electrical and electronic equipment. Work

[0003] However, the effective suppression of conducted interference has always been a common technical problem

It should be said that at present, no good general-purpose conducted interference filter has been developed at home and abroad.

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