전기학회논문지P (The Transactions of the Korean Institute of Electrical Engineers P)

  • 제58권2호
  • /
  • Pages.207-213
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  • 2009
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  • 1229-800X(pISSN)
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  • 2586-7792(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

주파수 분석기법을 이용한 전압 평활용 전해 커패시터의 고장진단

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

  • 발행 : 2009.06.01
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초록

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.

키워드

참고문헌

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