Implementation of Dual Control Maximum Power Point Tracking-Based DC–DC Converter Fed Solar PV Power Application

Abstract

This article presents an effective power ex traction methodology from photovoltaic (PV) with a front end dc–dc Resonant converter with dual control. Usu ally, conventional dc–dc boost converter shows lower ef f iciency and extra components for soft-switching. Further more, converter power transfer efficiency for PV integra tion is limited. Hence, to address these challenges this article investigates an isolated dc–dc resonant converter with proposed control to attain wider voltage regulation with maximized PV power generation. In addition, this con verter can achieve zero-voltage switching under wider op erating loads. The proposed control method improves the efficiency even under light load condition without effecting digital-signal-processor resolution, along with a simple per tub andobservemaximumpowerpointPIcontrolapproach. A 2.2-kW prototype is built and operated to interface PV system and to verify the performance over entire load. The peak efficiency of the converter is found to be 98.7% at (1.1-kW) 50% of the full load.