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Filter, power circuit and air conditioner

A filter and common-mode inductor technology, which is applied in the electronic field, can solve the problems of poor interference suppression in high-frequency bands, and achieve the effects of suppressing EMC interference, improving EMC interference, and reducing the number of coil layers

Active Publication Date: 2018-01-19
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the poor suppression effect of the existing EMC filter on high-frequency interference, it is necessary to increase the technical problem of manual magnetic surround system to suppress high-frequency EMC interference

Method used

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  • Filter, power circuit and air conditioner
  • Filter, power circuit and air conditioner
  • Filter, power circuit and air conditioner

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Embodiment Construction

[0023] Embodiments of the present application are described below in conjunction with the accompanying drawings.

[0024] First of all, the technical terms involved in this application are described as follows:

[0025] X Capacitor: A safety capacitor, used to suppress the electromagnetic interference of the power supply. Generally, the main functions in the circuit are: connecting across the two ends of the power input line to eliminate differential mode interference, EMI filtering, and spark elimination circuits to ensure that the finished electronic products meet EMC requirements.

[0026] Y capacitor: a safety capacitor, used to suppress the electromagnetic interference of the power supply. In the application, they are usually connected across the power output line and the protective ground respectively to suppress common mode interference, and generally appear in pairs (live wire-protective ground, neutral wire-protective ground).

[0027] Common-mode inductors, also ca...

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Abstract

The invention relates to a filter, a power circuit and an air conditioner and relates to the technical field of electronic engineering. By means of the embodiment of the invention, the distributed capacitance of the filter can be effectively reduced, and the disturbance of high-frequency-band EMC can be better restrained. The filter comprises a first common mode inductor which includes a magneticcore and a first coil winding wound on the magnetic core, wherein the first coil winding is formed in the mode that a flat wire is laid and wound, and the flat wire is high in thickness in the direction of the radius of the magnetic core section and low in thickness in the magnetic core extending direction. The filter is used for restraining the disturbance of the EMC.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a filter, a power circuit and an air conditioner. Background technique [0002] Electromagnetic Compatibility (Electro Magnetic Compatibility, EMC) refers to the ability of a device or system to operate in compliance with the requirements in its electromagnetic environment without causing unbearable electromagnetic interference to any equipment in its environment. EMC includes two requirements: on the one hand, it means that the electromagnetic interference generated by the equipment during normal operation cannot exceed a certain limit; on the other hand, it means that the equipment has a certain degree of immunity to the electromagnetic Immunity, or electromagnetic susceptibility. In the prior art, the electromagnetic interference between devices is usually suppressed by adding an EMC filter to the circuit. [0003] In view of the above situation, the inventors ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44H01F17/00H01F17/06H01F27/28
Inventor 陶淦李虎赵连池刘洋
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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