Title :
A non-invasive technique for fault diagnosis of SMPS
Author :
Amaral, Acácio M R ; Cardoso, A. J Marques
Author_Institution :
Polytech. Inst. of Coimbra/ISEC-DEIS, Coimbra
Abstract :
This paper presents an on-line non-invasive fault diagnostic technique that can predict the condition of aluminum electrolytic capacitors used in the output filter of switch mode power supplies (SMPS). The aluminum electrolytic capacitors aging process manifest itself by the increase of their equivalent series resistance (ESS). The proposed method uses the input current, the output voltage ripple, the discrete Fourier transform (DFT) and the least mean squares (LMS) algorithm to predict the ESR value.
Keywords :
ageing; aluminium; discrete Fourier transforms; electrolytic capacitors; fault diagnosis; least mean squares methods; power supply circuits; Al; aging process; aluminum electrolytic capacitors; discrete Fourier transform; equivalent series resistance; input current; least mean squares algorithm; on-line noninvasive fault diagnostic technique; output filter; output voltage ripple; switch mode power supplies; Aging; Aluminum; Capacitors; Discrete Fourier transforms; Electronic switching systems; Fault diagnosis; Filters; Switched-mode power supply; Switches; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE
Conference_Location :
Rhodes
Print_ISBN :
978-1-4244-1667-7
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2008.4592252
