Synchronous Buck Converter-Based Solar Power for Utility Purpose

This project explores the potential of synchronous buck converters as a vital technology for integrating utility-scale solar power. We focus on the design, implementation, and performance evaluation of a high-efficiency synchronous buck converter tailored for grid-connected photovoltaic (PV) systems. Unlike traditional designs that use diodes, our approach leverages MOSFETs as switching elements, significantly reducing conduction losses and improving efficiency—key factors for maximizing solar energy harvest. The primary objective is to optimize the converter for large-scale applications, emphasizing conversion efficiency, power density, and dynamic response. We develop a detailed mathematical model to analyse its steady-state and dynamic behaviour, forming the basis for an advanced control strategy. This strategy precisely regulates output voltage while incorporating Maximum Power Point Tracking (MPPT) to ensure optimal energy extraction despite variations in solar irradiance and temperature. Beyond efficient power conversion, we explore the converter’s role in grid stability. Our research investigates grid support functionalities, including reactive power injection and harmonic mitigation, which enhance voltage stability and power quality. Additionally, we assess the converter’s performance under grid disturbances, evaluating its fault ride-through capability and contribution to overall grid resilience as renewable energy penetration grows.