Abstract

This paper presents a new four port full bridge isolated dc-dc converter combining photovoltaic power generation, permanent magnet synchronous generator based wind energy system and energy storage device like battery. The converter is designed in order to show high performance compared to conventional multiport converters. A power factor correction cuk converter is used for voltage boosting and power quality enhancement of wind side converter. Sepic based converter is applied for photovoltaic generation side and a isolation transformer unit is added at output to decrease THD of the converter by operating it at nominal frequency. A full bridge dc to ac converter is used before isolation transformer and a full bridge rectifier is added at the output for DC microgrid applications. The proposed four port full bridge isolated dc-dc converter combining PV, PMSG wind and battery is simulated in MATLAB/SIMULINK software to verify the performance of the converter.

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