噪声与振动控制2019，Vol.39Issue(2)：134-139,6.DOI:10.3969/j.issn.1006-1355.2019.02.026
双底面电力电容器底部空气层尺寸设计方法
Design Method for Bottom Air Layer Size of Double-bottom Power Capacitors
摘要
Abstract
Vibration at the bottom of the capacitor is the main source of the radiated noise of the capacitor. The common method of reducing the noise is to weld a double cavity structure at the bottom of the capacitor. In order to realize the rapid design of the power capacitors with the double cavity bottom structure, a design method of bottom air layer size is proposed. Firstly, the main noise frequency of the power capacitor radiated noise is determined by experimental method. Then, the parameterized model of the double-cavity bottom structure is established in LMS Virtual. Lab, and the characteristic curves of frequency vs. sound insulation are calculated by the acoustic-vibration coupling method. Finally, the optimal size of the air-layer corresponding to the specific noise frequency of the power capacitor is optimized with the sound insulation effect as the optimal target. The results of vibration and noise comparison of capacitor samples are consistent with the trend of the proposed method, which verifies the reliability of the proposed method.关键词
振动与波/电力电容器/底部噪声/双底面/主要噪声频率/空气层尺寸Key words
vibration and wave/ power capacitor/ bottom noise/ double bottom/ main noise frequency/ air layer size分类
建筑与水利引用本文复制引用
李德玺,匡兵,刘夫云,王娇娇,姚春革..双底面电力电容器底部空气层尺寸设计方法[J].噪声与振动控制,2019,39(2):134-139,6.基金项目
广西科技开发资助项目(1598007-51) （1598007-51）
广西科学技术开发资助项目(桂科AC16380078) （桂科AC16380078）
桂林电子科技大学研究生教育创新计划资助项目(2017YJCX02) （2017YJCX02）
