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

fYear

2008

fDate

15-19 June 2008

Firstpage

2097

Lastpage

2102

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Conference_Location

Rhodes

ISSN

0275-9306

Print_ISBN

978-1-4244-1667-7

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2008.4592252

Filename

4592252