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Capacitor with relatively low operation noise

A capacitor and noise technology, applied in the field of capacitors, can solve the problems of complete bandgap without directionality and difficult propagation of elastic waves, etc., to reduce noise pollution, improve the effect, and reduce the effect of capacitor noise

Active Publication Date: 2018-01-19
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this measure is that the microperforated plate must be designed for the noise band of the specific capacitor
However, the complete bandgap has no directionality, and it will be difficult for elastic waves in all directions to propagate in such structures

Method used

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  • Capacitor with relatively low operation noise
  • Capacitor with relatively low operation noise
  • Capacitor with relatively low operation noise

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 Shown is a schematic diagram of the structure of the phononic crystal capacitor of the present invention. The phononic crystal capacitor includes a case 5, a capacitor core 6 and a noise reduction plate 7; the noise reduction plate 7 is located around the capacitor core 6 and installed on the bottom of the case 5 and side walls. Such as figure 2 image 3 Shown are cross-sectional views of two arrangements of the noise reduction plate 7 and the phononic crystal unit cell 4 . Figure 4 is a schematic diagram of the unit cell structure of the phononic crystal of the noise reduction board; Figure 4 It includes a metal ball vibrator 1, a covering body 2 and a substrate 3. The covering body 2 covers the vibrator 1 to form a unit cell 4. The unit cells 4 are arranged in an orderly array and wrapped in the material of th...

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Abstract

The invention discloses a capacitor with relatively low operation noise. The capacitor comprises a box shell, a capacitor core and a noise reduction plate; the capacitor core is positioned in the boxshell; the noise reduction plate is positioned on the periphery of the capacitor core, and the bottom layer and the side wall of the box shell; and the noise reduction plate is processed by phonon crystal to lower capacitor noise pollution. The noise reduction plate is formed by embedding phonon crystal unit cells in an epoxy resin substrate, wherein each phonon crystal unit cell consists of a metal sphere vibrator and a silicone rubber coating body. A vibrator performs energy depletion on the capacitor noise to reduce noise pollution, and the substrate can play an effect of sound insulation and is applicable to noise pollution treatment of the capacitor; the phonon crystal is high in noise reduction performance, so that the capacitor noise can be lowered effectively; and by virtue of thespecial structure of the phonon crystal, an obvious capacitor noise relieving effect can be achieved.

Description

technical field [0001] The invention relates to a phononic crystal noise reduction technology, in particular to a capacitor with lower noise. Background technique [0002] With the continuous investment and research and development of high-voltage and ultra-high voltage direct current transmission projects, more and more high-voltage and ultra-high voltage direct current transmission projects are under construction, among which power capacitors are important equipment for filtering and reactive power compensation in the process of direct current transmission. Capacitors The noise generated by the device during the working process makes people exposed to the noise environment for a long time, causing damage to the auditory system and nervous system of the human body. The audible noise pollution of filters is a common problem in HV and UHV converter stations. Therefore, it is of great significance to study the topic of capacitor noise reduction. [0003] The capacitor is comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/224H01G4/35
Inventor 严飞尹婷王子建韩赛飞范本壮
Owner CHINA ELECTRIC POWER RES INST
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