Design and analysis of solar photovoltaic-fed Z-source inverter-based dynamic voltage restorer

Document Type : Research Note

Authors

1 Department of Electrical Engineering, NIT Jamshedpur, Jharkhand, India

2 Faculty of Engineering, Department of Electrical & Electronics Engineering, NIT Jamshedpur, India

3 Faculty of Engineering, Department of Electrical Power & Machines, Ain Shams University, Cairo, Egypt

Abstract

Impedance source inverter or Z-source inverter (ZSI) is an emerging power electronic device. The one kind of feature of ZSI is that dissimilar the conventional inverters such as voltage source inverter and current source inverter it can be open and short-circuited which provides a mechanism for the main circuit to step-up and step-down the voltage as wanted. This work introduces a solar photovoltaic fed Z-source inverter (ZSI) based Dynamic Voltage Restorer (DVR) for the alleviation of destructive voltage swell and harmonics under sudden addition of a balanced three-phase nonlinear load. This article also focuses on perturbation and observation (P&O) method for automatically find the PV systems operating voltage that produces a maximum power output. The design, modeling, and simulation of the proposed PV-ZSI-DVR are implemented in MATLAB/SIMULINK for mitigation of voltage swell and harmonics balanced three-phase nonlinear load and the obtained results are compared with traditional SPV fed voltage and current source inverter based DVRs.

Keywords


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