Design, Implementation, and Analysis for Reducing Energy Losses in Solar Inverters through the Use of SiC MOSFETs

Abstract

The integration of Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) in solar inverters has emerged as a promising solution for enhancing energy conversion efficiency. This study presents the design and performance analysis of a high-efficiency solar inverter utilizing SiC MOSFETs, targeting increased power output and improved reliability in photovoltaic (PV) systems. The proposed inverter design focuses on reducing switching losses, minimizing heat dissipation, and achieving higher switching frequencies compared to traditional silicon-based devices. The adoption of SiC technology enables reduced conduction and switching losses due to its superior thermal properties and high breakdown voltage, making it ideal for solar inverter applications. Simulation results demonstrate significant improvements in efficiency—exceeding 98%—under varying load conditions. Additionally, the inverter’s performance was evaluated in terms of total harmonic distortion (THD), with values well within acceptable limits, ensuring clean and stable power output. The thermal management capabilities of SiC MOSFETs are also highlighted, showing reduced heat sink requirements and longer operational lifetimes. This research further explores the practical implementation challenges, such as gate driver considerations and EMI suppression, to optimize inverter design for real-world scenarios. The findings suggest that utilizing SiC MOSFETs in solar inverters not only enhances energy efficiency but also contributes to system compactness, potentially reducing the overall cost of PV installations. The study concludes with recommendations for future developments in SiC-based power electronics for renewable energy applications.