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Frequency Analysis Method Based Fault Diagnosis of an Electrolytic Capacitor for Voltage Smoothing  

Shon, Jin-Geun (경원대학교 전기공학과)
Kim, Jin-Sik ((주) 미디어디바이스)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.58, no.2, 2009 , pp. 207-213 More about this Journal
Abstract
Electrolytic capacitors have been widely used in power electronics system because of the features of large capacitance, small size, high-voltage, and low-cost. Electrolytic capacitors, which is most of the time affected by aging effect, plays a very important role for the power electronics system quality and reliability. Therefore it is important to estimate the parameter of an electrolytic capacitor to predict the failure. This paper proposed a novel fault diagnosis method of an electrolytic capacitor used for voltage smoothing in boost DC converter. The equivalent series resistance(ESR) of electrolytic capacitor estimated from FFT result of filtered waveform of capacitor voltage/current. Main advantage of the proposed method include circuit simplicity and easy implementation. Simulation and experimental results are shown to verify the performance of the proposed method.
Keywords
Electrolytic Capacitor; Equivalent Series Resistance(ESR); Fault Diagnosis; Boost Converter; Frequency Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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