Abstract
In this paper, a single-phase full-bridge grid-tied inverter is considered for home-based photovoltaic applications. The dc-dc converter is inevitable in boosting the voltage and tracking the maximum power from the photovoltaic source. As a result, the size and cost of the home-based photovoltaic grid-tied systems increases. A dc-dc converter is eliminated in this work, and the PV voltage is considered as the input voltage to a single-phase full-bridge inverter system. Also, to overcome the demerits of traditional peak power techniques, a fuzzy logic-based peak power controller is proposed. A fuzzy logic-based dc-link voltage controller is also proposed to overcome the conventional PI-based dc-link voltage controller's demerits. Primarily the theoretical concept is validated by using the MATLAB/SIMULINK tool for simulation analysis. The Spartan-6 FPGA control board is used to implement the controller program. A laboratory prototype is fabricated in the experimental laboratory to verify the theoretical and simulation analysis. Different case studies are comprehended in this work to present the robustness of the recommended control scheme.
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