Modified Bidirectional Dc-dc Boost Converter Fed Three-Phase Four-Wire PV-DVR

Abstract

Abstract In this article, a photovoltaic (PV)-integrated bidirectional two-winding coupled inductor–based dc-dc converter-fed three-phase four-wire (3P4W) photovoltaic dynamic voltage restorer (PV-DVR) is proposed. The PV interconnected DVR, connected with the power distribution network, effectively compensates the long-term voltage sag, voltage swell, and interruptions. The conventional PV-DVRs designed with the cascaded connection of dc-dc converters offer high boosting gain with increased losses and cost. The proposed PV-DVR based on two-winding coupled inductor–based bidirectional dc-dc converter is designed to provide high boosting gain with increased efficiency and reduced components. The performance of the proposed scheme is validated by simulation using MATLAB/SIMULINK (MathWorks, Natick, MA) and experimentally under different operating conditions. The results show the effectiveness of the proposed topology in mitigating the long-term voltage sag, voltage swell, and interruptions.