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The Journal of The Korea Institute of Intelligent Transport Systems Vol.8 No.6 pp.181-187
비선형부하에 대한 전해 커패시터의 특성 해석과 커패시턴스 용량 추정 알고리즘
A Characteristic Analysis and Capacitance Estimation Algorithm of Electrolytic Capacitor for Non-linear Loads
Abstract
Due to the large capacity and low cost, electrolytic capacitors with of energy storage and voltage regulation are used for almost all types of non-linear load as the DC/DC converter. Electrolytic capacitor, which is the most of the time affected by the aging effect, plays very important role for the power converter system quality and reliability. Therefore, this paper proposes a new method to detect the changes the capacitance value of an electrolytic capacitor in order to analyze the internal characteristic and worn-out state of an electrolytic capacitor. Simulation results by frequency analysis show the validity of the proposed capacitance estimation algorithm.
