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One of the most significant reliability issues in switching-mode power supplies is electrolytic capacitor degradation caused by aging. This paper proposes an output voltage transient analysis method to detect capacitor wear-out at the output stage of a step-down dc–dc converter. Changes in the converter output voltage dynamics are evaluated by analyzing the output voltage step response with respect...
Small PV system installed on the roof of Faculty of Electrical Engineering and Information Technology building in Bratislava has been monitored during three years and its parameters determined. After three years of operation time the changes in photovoltaic module properties have been evaluated by means of various electrical measurements and ageing process estimated using the capacitance, dissipation...
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