Stacked common-mode inductor, filter and power converter

A technology for power converters and common mode inductors, applied in the field of inductors, can solve problems such as common mode and differential mode noise, and achieve the effects of improving performance, low magnetic field emission, and improving the ability to suppress electromagnetic interference.

Inactive Publication Date: 2021-02-26
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the magnetic field is not uniform or the common mode inductor winding is not symmetrical, the induced voltage Vind1 and Vind2 will not be equal, making the near magnetic field coupling generate common mode and differential mode noise

Method used

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  • Stacked common-mode inductor, filter and power converter
  • Stacked common-mode inductor, filter and power converter
  • Stacked common-mode inductor, filter and power converter

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as figure 2 and image 3 As shown, the stacked common mode inductor in this embodiment includes two common mode inductors, the magnetic cores of the two common mode inductors are the same, the windings of the two common mode inductors are connected in series with the same number of turns, and the two common mode inductors are up and down Stacked together; where the cores of the two common-mode inductors are coaxially arranged; the winding directions between the two common-mode inductors are opposite. Of course, in other embodiments, four or more even-numbered common-mode inductors may also be set.

[0031] Further, the magnetic cores of the common mode inductors are arranged coaxially, and the windings of the common mode inductors are also arranged coaxially. The windings of each common mode inductor are uniformly wound on the c...

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Abstract

The invention discloses a stacked common-mode inductor, a filter and a power converter, belongs to the technical field of inductors, and aims to solve the technical problems of poor anti-interferenceperformance and the like of an existing common-mode inductor. The stacked common-mode inductor particularly structurally comprises an even number of common-mode inductors, wherein the magnetic cores of all the common-mode inductors are the same, the windings of all the common-mode inductors are sequentially connected in series, and the common-mode inductors are stacked up and down. The stacked common-mode inductor of the invention has the advantages of high external magnetic field immunity, high differential mode inductance, low magnetic field emission and the like.

Description

technical field [0001] The invention mainly relates to the technical field of inductors, in particular to a stacked common-mode inductor, filter and power converter. Background technique [0002] Due to the advantages of small volume, high efficiency, and stable performance, power converters have been widely used and developed rapidly in power supplies. However, a large number of electromagnetic interference problems caused by their high switching frequency characteristics cannot be ignored, especially with the development of automotive electronics, wireless With the development of technology such as human driving, electromagnetic interference has not only affected the performance of equipment, but even related to personal safety. Electromagnetic Interference (EMI) filter is one of the most effective EMI suppression devices, the traditional passive filter consists of capacitors and inductors. In power electronic systems, due to the high switching frequency and compact desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/14H01F27/36H01F27/28H01F27/24
CPCH01F38/14H01F27/36H01F27/2895H01F27/24
Inventor 支永健张晨刘松林杨天矾闵建军
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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