SIMULATIONOF HYBRID PV - WIND ENERGY SYSTEM USING MATLAB/SIMULINK

Abstract

This project focuses on the design and development of a multi-input inverter for a grid-connected hybrid renewable energy system that integrates photovoltaic (PV) and wind energy sources. The proposed system combines a multi-input buck/buck-boost DC–DC converter with a full-bridge DC–AC inverter, enabling efficient power conversion from multiple renewable sources using a single inverter unit. This integrated approach reduces hardware complexity, system cost, and conversion losses while improving overall reliability. To ensure maximum utilization of available renewable energy, a Perturb and Observe (P&O) based Maximum Power Point Tracking (MPPT) algorithm is implemented to extract maximum power from both PV and wind sources under varying environmental conditions. The entire control strategy is implemented using a Digital Signal Processor (DSP), which provides precise and fast control for stable grid interfacing. Additional features such as soft-start operation, overcurrent protection, and voltage regulation are incorporated to enhance system safety and performance. Simulation results validate the proposed inverter’s effectiveness, demonstrating efficient power sharing, high conversion efficiency, and stable grid synchronization. The proposed system offers a practical and cost-effective solution for hybrid renewable energy integration in grid-connected applications.