金属化薄膜电容器噪声产生的机理分析
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摘要
金属化薄膜电容器的噪声是薄膜在交流电场下振动引起,如何消除至今在电容器行业中仍是一个技术难题。通过对有噪声产品解剖观测和对噪声现象特点的分析研究,提出了揭示噪声产生原因和噪声与温度关系的"气泡噪声"机理,认为热定型工序的高温生成薄膜层间的气泡是产生噪声的根本原因。材料筛选、工艺改进能改善噪声强度和发生概率,但只要热定型工序存在要杜绝噪声的产生就是十分困难的。
The noise of metallized film capacitors is caused by the vibration of thin film in AC electric field and how to eliminate it is still a technical problem in the present capacitor industry. The mechanism of the reason of noise generation and the "bubble noise" between noise and temperature are revealed through anatomy of the noisy product and analysis of noise feature, affirming that the bubble between the film layers due to high temperature of the heat setting process is the root cause of the noise. The noise strength and occurrence probability can be improved by material selection and process modification. However, it is very difficult to eliminate the noise by only thermal setting process.
The noise of metallized film capacitors is caused by the vibration of thin film in AC electric field and how to eliminate it is still a technical problem in the present capacitor industry. The mechanism of the reason of noise generation and the "bubble noise" between noise and temperature are revealed through anatomy of the noisy product and analysis of noise feature, affirming that the bubble between the film layers due to high temperature of the heat setting process is the root cause of the noise. The noise strength and occurrence probability can be improved by material selection and process modification. However, it is very difficult to eliminate the noise by only thermal setting process.
引文
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[2]塑料薄膜电容器产品说明书[Z]日本日立AIC株式会社.
[3]吴国斌. CBB61交流电动机电容器交流声探讨[J]. IT时代周刊论文专版,2015:161-163.WU Guobin. Researching CBB61 metallized film of AC motor capacitor[J]. IT Time Weekly 2015:161-163.
[4]于凌宇,牛红军.金属化聚丙烯薄膜电容器交流声形成机理及消声技术研究[J].电力电容器,2000(4):7-11.
[5]汤泽波.交流电动机电容器交流声研讨[J].电力电容器,2007,28(6):35-39.TANG Zebo. AC motor capacitor noise investigation[J].Power Capacitor, 2007,28(6):35-39.
[6]祝令瑜,汲胜昌,曹涛,等.电容器噪声传播规律的研究[C]2013输变电年会论文集,2013:445-449.
[7]董修峰,孙东,张祝平,等.电力电容器单元噪声试验及降噪方法探讨[C]//2010输变电年会论文集,2010:441-498.
[8]杨家莉,杨家元,徐永海.一种谐波对电力电容器噪声影响程度的分析方法[J].电力电容器与无功补偿,2016,37(3):56-61.YANG Jiali, YANG Jiayuan, XU Yonghai. Analysis method on the influence of harmonic to noise degree of power capacitor[J]. Power Capacitor&Reactive Power Compensation, 2016,37(3):56-61.
[9]陈厚锦,刘夫云,旷冬伟,等.电力电容器心子振动建模方法研究[J].电力电容器与无功补偿,2017(4):30-35.CHEN Houjin, LIU Fuyun, KUANG Dongwei, et al. Research on vibration modeling and simulation of power capacitor core[J]. Power Capacitor&Reactive Power Compensation,2017(4):30-35.
[10]左强林,冯春林,李志远.HVDC用低噪声电容器研制[C]2012输变电年会论文集,2012:418-423.
[11]电容器检验规范:QJ/GD 41. 10. 012[S]珠海格力电器股份有限公司.
[12]彭波.金属化膜电容器自愈关键参数研究[D].武汉:华中科技大学,2010.
[13]李天勇,高儒昌.金属化聚丙烯膜电容器交流声消除措施探讨[C]//电力电容器无功补偿技术论文集,2005:114-116.
[14]潘毓娴,G77型柔直输变电装置用金属化膜电容器的工艺控制[C]//输变电年会论文集,2016:799-801.