Deterioration Diagnosis of Electrolytic Capacitor in Motor Drive System using the System using the System ID Method

시스템 식별론을 이용한 드라이브 시스템에서의 전해 콘덴서 결함 진단

An electrolytic capacitor is widely used in a motor drive system. Therefore, the deterioration diagnosis of an electrolytic capacitor is needed of preventive maintenance of the system. In this paper, we propose a new diagnosis method for the electrolytic capacitor by using the system identification method, which presents the information about the capacitor's interna parameters in on-line operation an use fuzzy algorithm for the deterioration decision. We demonstrated the effectiveness of the proposed control scheme by using computer simulation.