文章基本信息

标题：Estimation of Parasitic Resistance of Electrolytic Capacitor and Filter Inductor and Prediction of Input Filter Induced Oscillations in a Switch-Mode Magnet Power Supply
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作者：Rajul Lal Gour ; Mangesh Borage ; Alok Singh 等
期刊名称：Advances in Power Electronics
印刷版ISSN：2090-181X
电子版ISSN：2090-1828
出版年度：2016
卷号：2016
DOI：10.1155/2016/7609103
出版社：Hindawi Publishing Corporation
摘要：In switch-mode power converters with large ratings, it is important to be able to predict the parasitic resistances associated with circuit elements such as electrolytic capacitor and filter inductor in the initial converter design stage itself to avoid the cost and time associated with actual design, prototype fabrication, and testing of these components. Knowing the values of parasitic elements is also important as they decide the possibility of closed-loop instability, besides affecting the other circuit parameters. In this paper, a way to estimate the equivalent series resistance of electrolytic capacitor and the winding resistance of filter inductor is proposed leading to their closed form expressions in terms of system parameters. Using these, procedure to predict the closed-loop instability induced due to the input filter is exemplified with illustrative calculations.