Title :
Deterioration diagnosis of electrolytic capacitor in a buck-boost converter
Author :
Harada, Koosuke ; Katsuki, Akih Iko
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
Abstract :
A method is proposed for diagnosing the deterioration of an electrolytic capacitor with a finite life span used in the active circuit of a buck-boost converter. Such information is needed for preventive maintenance of DC-to-DC converters. The method is based on the fact that the equivalent series resistance (ESR) of the electrolytic capacitor increases as it deteriorates, which causes in turn an increased ripple in direct proportion to the ESR.<>
Keywords :
electrolytic capacitors; power convertors; DC-to-DC converters; active circuit; buck-boost converter; deterioration diagnosis; electrolytic capacitor; equivalent series resistance; finite life span; preventive maintenance; Anodes; Biomembranes; Capacitance; Capacitors; Cathodes; DC-DC power converters; Electrodes; Paramagnetic resonance; Particle separators; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18249
