DC/DC 컨버터를 이용한 DC Bus 커패시터의 간단한 ESR 측정 기법

다국어 초록 (Multilingual 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. The estimation of the equivalent series resistance(ESR) is important parameter in life condition monitoring of electrolytic capacitor.
This paper proposes a simple technique to measure the ESR of an electrolytic capacitor. This method uses a switching DC/DC boost converter to measure the DC Bus capacitor ESR of power converter. Main advantage of the proposed method is very simple in technique, consumes very little time and requires only simple instruments. Simulation results are shown to verify the performance of the proposed method.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 전해 커패시터의 고장과 ESR 특성
• 3. DC/DC컨버터에 의한 ESR 추정 알고리즘
• 4. 모의실험 및 결과의 검증
• 5. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

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2 손진근, "전력변환장치에서의 DC 출력 필터 커패시터의 온라인 고장 검출기법" 대한전기학회 58 (58): 483-489, 2009

3 안치영, "알루미늄 전해 커패시터의 가속열화시험" 1-6, 2006

4 기술표준원 신뢰성전문위원회, "알루미늄 전해 커패시터 해설서 RS C 0005"

5 P. Venet, "Realization of a smart electrolytic capacitor circuit" (1) : 16-20, 2002

6 손진근, "PWM 전력 컨버터에서 DC 링크 커패시터의 개선된 온라인 고장 진단" 대한전기학회 59 (59): 40-46, 2010

7 M.L.Gasperi, "Life Prediction Modeling of Bus Capacitor in AC Variable-Frequency Drives" 41 (41): 1430-1435, 2005

8 Afroz M. Imam, "LMS based Condition Monitoring of Electrolytic Capacitor" 41 (41): 848-853, 2005

9 J.W. Kolar, "Analytical calculation of the RMS current stress on the DC-link capacitor of voltage-PWM converter systems" 153 (153): 535-543, 2006