Title :
Fault diagnosis and failure prediction of aluminum electrolytic capacitors in power electronic converters
Author :
Ma, Hao ; Wang, Linguo
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
This paper gives the equivalent circuit model of aluminum electrolytic capacitor, and analyzes the main degradation mechanism, based on which the life model and degradation parameter of aluminum electrolytic capacitor is discussed in detail. To realize online fault diagnosis of aluminum electrolytic capacitor in power electronic converters, a parameter identification method to identify the equivalent series resistance (ESR) based on the circuit model is presented, and the trend of ESR with time is also deduced to realize failure prediction
Keywords :
aluminium; electrolytic capacitors; failure analysis; fault diagnosis; parameter estimation; power convertors; ESR; aluminum electrolytic capacitors; equivalent circuit model; equivalent series resistance; fault diagnosis; parameter identification; power electronic converters; Aluminum; Anodes; Cathodes; Degradation; Equivalent circuits; Fault diagnosis; Power capacitors; Power electronics; Predictive models; Voltage;
Conference_Titel :
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
0-7803-9252-3
DOI :
10.1109/IECON.2005.1569014
