Inversor trifásico sem barramento CC aplicado ao bombeamento fotovoltaico.

Abstract

The developed theme consists of the study, characterization and analysis of a High- frequency pulsating DC-link three-phase inverter without electrolytic capacitor for pumping of fluids using the energy generated by photovoltaic panels. During the study, the choice of the DC/DC converter to be used in the DC power stage, the design of the magnetic components, the reasons for not using the electrolytic capacitors and the switching strategies for DC/DC, DC/AC and for the snubber circuit are discussed. The importance of replacing the electrolytic capacitor by a pulsating DC-link, or by another type of capacitor is addressed. Simulation and experimental results of the proposed inverter are addressed to validate this work.