| 通过电容器层间压强的增强提高电容器寿命 |
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| 引用本文： | 王文娟,李化,李智威,童勇,林福昌.通过电容器层间压强的增强提高电容器寿命[J].强激光与粒子束,2014,26(4):045015-134. |
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| 作者姓名： | 王文娟 李化 李智威 童勇 林福昌 |
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| 作者单位： | 1.强电磁工程与新技术国家重点实验室华中科技大学, 武汉 430074; |
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| 基金项目： | 国家自然科学基金项目(51377070) |
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| 摘 要： | 通过对圆柱体电容器内部压强进行计算分析,研究提升电容器寿命的方法。首先分析得出,电容器内部层间压强的提高可以减小自愈能量,降低脉冲放电过程中的电容量损失,因此可以提升电容器寿命。其次,提出了电容器内部层间压强的计算模型。试验结果表明:通过合理的热处理工艺,电容器寿命可提高30%;当外包膜层数从20层增加到100层时,电容器寿命提高38%。
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| 关 键 词： | 金属化膜电容器 层间压强 电容器寿命 热处理 外包膜 |
| 收稿时间： | 2013/10/22 |
Lifetime improvement of metallized film capacitors by inner pressure strengthening |
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| Institution: | 1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology,Wuhan 430074,China;2.Southwest Institute of Technical Physics,Chengdu 610041,China |
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| Abstract: | This paper concentrates on the inner pressure in the cylindrical metallized polypropylene film capacitor (MPPFC) winding. Firstly, the influences of inner pressure on self-healing and lifetime are investigated. Lifetime can be extended by inner pressure strengthening. Secondly, an inner pressure calculation formula is presented. Finally, the experimental results show that lifetime can be extended by 30% with rational heat treatment and by 38% when the number of wrapped films increases from 20 to 100. |
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| Keywords: | metallized film capacitor inner pressure capacitor lifetime heat treatment wrapped film |
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