CASCADED SOLAR INVERTERS: ADVANCING OUTPUT VOLTAGE STABILITY AND EFFICIENCY

Abstract

The integration of solar energy into modern power systems has increased the demand for reliable and efficient inverter technologies. Cascaded multilevel inverters (CMIs) are widely used for solar photovoltaic (PV) systems due to their ability to generate high-quality voltage waveforms with reduced harmonic distortion. This study focuses on enhancing output voltage regulation in solar-fed CMIs to improve system stability, efficiency, and power quality. By implementing advanced control strategies and voltage balancing techniques, the proposed approach mitigates voltage fluctuations caused by varying solar irradiance and load conditions. Simulation and experimental results demonstrate significant improvements in output voltage stability, reduced total harmonic distortion (THD), and increased overall system efficiency compared to conventional methods. The findings highlight the potential of optimized cascaded inverter topologies to support robust and efficient solar energy integration, contributing to the development of reliable, high-performance renewable energy systems.