Aspects of renewable energy supply to small consumers

Whether it is using renewable energy photovoltaic or wind type, the problem is that this energy to be delivered at constant parameters. Classic storage on lithium-ion or lead-acid battery, ensure some stability of the voltage supplied, but when new alternative storage solutions arise, the stability of the voltage supplied can be improve. For example, for systems off - grid can go on the DC-DC converters. Article proposes a study on replacing classic batteries with supercapacitors battery and converter pair. Supercapacitor can be considered a promising device. It can be used virtually maintenance free. It is analyzed several operating schematics (inverter and SEPIC) of buck-boost type converters that can be used together with supercapacitors. The converter is designed to maintain a constant output. Designing such a converter is, considering the work situation, to achieve high efficiency and a wide range of input voltage.