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This paper presents a dc-dc power converter integrated in such a way to obtain, in a single conversion stage, the maximum energy extraction from photovoltaic panels, battery charging and discharging dynamic control, and high voltage step-up to feed the inverter DC bus, also operating with soft-switching capability. Although this idea can be applied to most of the high voltage gain topologies, this paper is based on a structure derived from the half-bridge boost converter. Thus, a 500W prototype, with input voltage of 24V and output voltage of 200V, has been developed with the purpose of obtaining the experimental results and validate the proposed converter. High efficiency is achieved, above 92.5%, confirming the expected operation and functionalities necessary for the proposed application.

A single stage DC-DC converter feasible to battery charging from PV panels with high voltage step up capability