Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/104285
Title: Online condition monitoring system for DC-link capacitor in industrial power converters
Authors: Mohamed Halick Mohamed Sathik
Mohd Tariq
Sundararajan, Prasanth
Sasongko, Firman
Tan, Chuan Seng
Simanjorang, Rejeki
Keywords: Bandpass Filters
Condition Monitoring
Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Sundararajan, P., Mohamed Halick Mohamed Sathik, Sasongko, F., Tan, C. S., Mohd Tariq & Simanjorang, R. (2018). Online condition monitoring system for DC-link capacitor in industrial power converters. IEEE Transactions on Industry Applications, 54(5), 4775-4785. doi:10.1109/TIA.2018.2845889
Series/Report no.: IEEE Transactions on Industry Applications
Abstract: This paper proposes an online condition monitoring system for aluminum electrolytic capacitors used as dc-link capacitors in industrial power converters. Electrolytic capacitors are one of the most fragile components of a power converter system because of their wear-out failures and short lifespan. Therefore, the use of condition monitoring systems for aluminum electrolytic capacitors allow preventive maintenance to be performed, thereby avoiding unexpected shutdown and downtime. The dominant wear-out mechanisms in aluminum electrolytic capacitors are characterized by the increase in equivalent series resistance. Hence, the condition monitoring system proposed in this paper is based on the online estimation of the capacitor's equivalent series resistance using the switching frequency components of the dc-link capacitor voltage and current. The equivalent series resistance estimation method is tested using the PSpice circuit simulator and is validated experimentally using a custom-made inverter. Finally, the equivalent series resistance estimation method is adapted for the condition monitoring of capacitors in industrial power converters and the proposed condition monitoring system is implemented in a commercial ac drive system to prove the applicability of the proposed method to industrial power converters.
URI: https://hdl.handle.net/10356/104285
http://hdl.handle.net/10220/50222
ISSN: 0093-9994
DOI: 10.1109/TIA.2018.2845889
Schools: School of Electrical and Electronic Engineering 
Organisations: Rolls-Royce@NTU Corporate Laboratory
Rights: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/TIA.2018.2845889
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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