Design and Implementation of a Cascaded H-Bridge Multi-Level Inverter for Renewable Energy Applications

Abstract

This paper presents the design and implementation of a Cascaded H-Bridge Multi-Level Inverter (CHB-MLI) tailored for renewable energy applications. The CHB-MLI topology is selected due to its modular structure, ability to produce high-quality output waveforms with reduced Total Harmonic Distortion (THD), and increased efficiency, making it particularly well-suited for integrating renewable energy sources such as photovoltaic (PV) systems and wind turbines into the power grid.The design process involves detailed consideration of the inverter's power circuit, control strategies, and the choice of components to ensure optimal performance. Simulation studies are conducted using MATLAB/Simulink to evaluate the inverter's performance under various operating conditions, demonstrating its capability to maintain a stable output with low THD and high efficiency. Additionally, a prototype is developed to experimentally validate the simulation results, with measurements confirming the inverter's effectiveness in real-world applications.The results highlight the CHB-MLI's potential to enhance the integration of renewable energy into the grid by improving power quality and reducing losses, thereby contributing to the broader adoption of renewable energy technologies. This research provides valuable insights into the practical implementation of CHB-MLI and lays the groundwork for future advancements in inverter technology for sustainable energy systems.