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This paper presents a single-phase inverter applied to photovoltaic distributed generation, based on the association of a Boost ZVT converter and a H6 type inverter intended for grid connection. The designed 4.8 kW rated power prototype, which is fed by PV arrays, may demand boost voltage during operation. However, due to its nominal current values the resonant Boost ZVT converter has advantages, considering its low electromagnetic interference, as well as high efficiency. The H6-type inverter allows the design of grid connecting elements with reduced inductance, providing low common mode voltage. A hybrid MPPT system that can act depending on the panel association input voltage is presented which may increase efficiency. Finally, analysis and experimental results are presented considering the main control algorithms for the application.

MPPT Híbrido Aplicado à Associação dos Conversores Boost ZVT e Inversor H6 Para Aplicações Fotovoltaicas