Multiple-Source Single-Output Buck-Boost DC–DC Converter with Increased Reliability for Photovoltaic (PV) Applications

This paper presents an improved topology for a DC–DC converter suitable PV applications. The proposed has the ability to be energized from multiple DC sources. Hence, it can two, three or higher number of sources according modules adopted in its design. supply single load with power at voltage lower than summation all excitation voltages non-reversed polarity output. Moreover, provides more reliable operation compared other converters due partial failures exciting In this paper, theoretical discussion is presented considering construction and principle operation. performance theoretically evaluated using simulation based on (PSIM) software different conditions. PSIM photovoltaic (PV) as input show validity renewable energy For evaluation, experimental work carried out by building prototype testing operating