Grid connected hybrid PV wind battery based system for house hold applications

Abstract

The increasing global demand for sustainable, reliable, and decentralized energy solutions has driven significant advancements in hybrid renewable energy systems (HRES), particularly for residential applications. This thesis presents a comprehensive investigation into the modeling, control, and optimization of a solar wind battery hybrid system designed to deliver uninterrupted, clean energy to household loads while ensuring power quality and cost-effectiveness. newlineThe proposed system integrates photovoltaic (PV) and wind energy as primary sources, supported by a lithium-ion battery energy storage system (BESS) to compensate for resource intermittency and load fluctuations. To maximize energy extraction, advanced Maximum Power Point Tracking (MPPT) techniques such as Incremental Conductance and Tip-Speed Ratio methods are implemented for PV and wind subsystems, respectively. Power conversion and quality control are achieved using a Cascaded H-Bridge Multilevel Inverter (CHB-MLI), chosen for its high efficiency, low total harmonic distortion (THD), and modular structure. Additionally, a smart Energy Management System (EMS) coordinates energy flow between sources, storage, and the load, using a fuzzy-logic-based control strategy to enhance self-consumption, reduce dependency on the grid, and extend battery life. newlineGrid integration challenges, including voltage sags, harmonics, and frequency instability, are addressed using Unified Power Quality Conditioner (UPQC) and reactive power support mechanisms embedded in the inverter architecture. Simulation models developed in MATLAB/Simulink demonstrate the technical viability and operational robustness of the system under various weather, load, and fault conditions. This research contributes to the growing body of literature by offering a unified, scalable, and intelligent control framework that incorporates generation forecasting, power quality regulation, and economic operation in residential hybrid energy systems.