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Dissipation factor as a degradation indicator for electrolytic capacitors
, Article IEEE Journal of Emerging and Selected Topics in Power Electronics ; 2022 , Pages 1-1 ; 21686777 (ISSN) ; Peyghami, S ; Mokhtari, H ; Wang, H ; Blaabjerg, F ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
Capacitors are one of the most critical components in power electronic converters, yet they are notoriously susceptible to failure. Avoiding unforeseen outages caused by capacitor failures is one of the most effective approaches to increase system availability. Therefore, a variety of methods have been proposed to monitor a capacitor health condition based on different degradation indicators. This paper proposes a new approach based on the accurate measurement of an electrolytic capacitor dissipation factor to detect its end-of-life. Since the dissipation factor is affected by both the capacitor resistance and capacitance simultaneously, it can provide more information about the health...