Title :
Fault Diagnosis and Life Prediction of DC-link Aluminum Electrolytic Capacitors Used in Three-phase AC/DC/AC Converters
Author :
Yong Yu ; Tao Zhou ; Mingjun Zhu ; Dianguo Xu
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
A very simple and low-cost strategy for the fault diagnosis and life prediction of DC-link aluminum electrolytic capacitors which is used in three-phase converters is presented in this paper. The main idea of this paper is to calculate the value of ESR and C using the inverter based on Recursive Least Square (RLS) method whenever the motor is stopped. The proposed strategy can provide a quick and accurate estimation of ESR and C with minimal hardware requirements. Theoretical analysis and simulation experiment are implemented to illustrate the efficiency of the proposed technique.
Keywords :
AC-DC power convertors; DC-AC power convertors; aluminium; capacitance; electric resistance; electrolytic capacitors; equivalent circuits; fault diagnosis; invertors; least squares approximations; power capacitors; Al; DC-link aluminum electrolytic capacitors; capacitance; equivalent series resistance; fault diagnosis; inverter; life prediction; recursive least square method; three phase AC-DC-AC converters; Aluminum; Capacitors; Degradation; Equations; Integrated circuit modeling; Inverters; Mathematical model; ESR; aluminum electrolytic capacitors; degradation mechanism; fault diagnosis; lifetime analysis;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
DOI :
10.1109/IMCCC.2012.199
