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DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function

A busbar and common mode technology, applied in the direction of output power conversion device, busbar installation, cable installation, etc., can solve the problems of high filtering performance, increased cost, occupied space, etc., to reduce parasitic inductance , reduce cost, reduce volume effect

Inactive Publication Date: 2013-08-14
SHANGHAI EAGTOP ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, adding an AC EMI filter and a DC EMI filter increases the cost;
[0004] Second, the volume is large and takes up space;
[0005] Third, the independent EMI filter is affected by the size, and the filtering performance is difficult to achieve high

Method used

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  • DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function
  • DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function
  • DC (Direct-Current) common-mode busbar integrated with EMI (Electromagnetic Interference) filtering function

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Embodiment Construction

[0014] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0015] Such as figure 1 As shown, the present invention provides a DC common-mode busbar with integrated EMI filtering function, including a winding busbar 1 and a capacitor busbar which are laminated by a positive plate, a negative plate, and an insulating plate between the positive plate and the negative plate. Row 2.

[0016] The insulating plate of the winding busbar 1 is made of flexible insulating material to ensure insulation strength and low parasitic inductance. The positive plate and the negative plate are respectively bonded to the edge of the insulating plate to ensure the reliability of the product.

[0017] The positive and negative plates of the winding busbar 1 are fixedly connected to the positive and negative poles of the capacitor busbar 2 respectively. The end of the winding busbar 1 passes through the magneti...

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PUM

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Abstract

The invention relates to a DC (Direct-Current) common-mode busbar integrated with an EMI (Electromagnetic Interference) filtering function. The DC common-mode busbar comprises a positive plate, a negative plate, a winding busbar and a capacitance busbar, wherein the winding busbar and the capacitance busbar are formed by overlapping insulating plates positioned between the positive plate and the negative plate. The DC common-mode busbar is characterized in that the positive plate and the negative plate of the winding busbar are fixedly connected with the anode and cathode of the capacitance busbar respectively; and the end part of the winding busbar passes through a magnetic ring twice in sequence. The DC common-mode busbar has the advantages that the EMI filtering function is integrated while electric energy is transmitted and parasitic inductance is lowered, a filtering effect is achieved, meanwhile, the cost is lowered, and the size is reduced.

Description

technical field [0001] The invention relates to an EMI filtering method of an electrical device and a structural design of a DC common-mode busbar, belonging to the technical field of electrical devices. Background technique [0002] The original laminated busbar is usually only used as an electrical connection device, which plays the role of transmitting electric energy and reducing the parasitic inductance of the system in the system, and does not have the function of EMI filtering. As domestic and foreign standards have more and more perfect EMI requirements for frequency converters, it has become a trend to add EMI filter components to the AC side or DC side of the frequency converter, especially in the new energy industry. Usually, for high-power photovoltaic or wind power inverters, an AC EMI filter and a DC EMI filter are added to the AC side and DC side respectively to isolate the interference of high-frequency noise to the power grid or other equipment, which has th...

Claims

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Application Information

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IPC IPC(8): H02G5/00H02M1/44
Inventor 洪英杰
Owner SHANGHAI EAGTOP ELECTRONICS TECH
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