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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 aim of this paper is to present a fault simulation technique that could help engineers to study the consequences of faults in the output filter of a switch mode power supply. To do so, in this paper, it is presented two techniques: a new experimental off-line technique based in the DFT algorithmic, which can determine the equivalent circuit of capacitors at the operating frequency of the converter,...
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