Abstract
This paper presents a photovoltaic (PV) array fed three-phase three-wire dynamic voltage restorer (DVR) for voltage regulation in a low voltage (LV) distribution system. Besides the voltage regulation, the proposed DVR reduces the energy consumption from three-phase utility grid by utilizing the rated inverter capability after excessive or equal real power generation to load demand during daytime. The control of DVR is achieved by using minimal energy injection technique. Further, the use of low step-up DC-DC converter with fuzzy based perturb & observe (P&O) maximum power point tracking (MPPT) algorithm eliminates the drawback of the conventional PV based DVR by tracking maximum power point of the PV array. MATLAB/Simulink results are presented to validate the advantage of the proposed system.
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