• Swastik Vaidya
• Dr. Omprakash Rajankar

The rapid proliferation of electrical loads, the proliferation of electronic devices & communication equipment has resulted in a substantial energy imbalance. Traditional energy sources including coal, gasoline, and natural gas are expected to approach their limitations by 2050 as stated by International Energy Agency. To address this challenge, researchers have turned to renewable energy sources like solar power to meet the growing energy demand. Various technologies have been developed to harness energy from these sources, with multilevel inverters (MLI) emerging as a preferred choice among researchers. Modularity, low voltage stress, low common mode voltage, enhanced harmonic profiles, along with fault tolerance are some benefits of MLIs. However, traditional MLI configurations involve a multitude of components, including switches, diodes, capacitors, and isolated DC sources, resulting in increased system volume, weight, cost, and reduced reliability. A proposed single-phase multilevel inverter with an improved modulation technique is presented, featuring a circuit configuration with power diodes, dc bus capacitors, and power switches an H-bridge is integrated to generate negative voltage levels, thereby reducing the usage of power switches. The study investigates 3-level, 5-level, and 7-level inverters, underscoring the significance of enhanced modulation techniques such as Sinusoidal Pulse Width Modulation (SPWM). Simulation results demonstrate the effectiveness of the proposed inverters, with the 7-level inverter exhibiting superior functionality as measured by Total Harmonic Distortion, efficiency, and power factor. The findings highlight the potential for more efficient and reliable multilevel inverters in renewable energy applications, contributing to sustainable energy development.

Multilevel Inverter, PWM Techniques, Total Harmonic Distortion.

"ENHANCING MULTILEVEL INVERTER PERFORMANCE IN RENEWABLE ENERGY SYSTEMS WITH IMPROVED MODULATION TECHNIQUE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 5, page no.f189-f211, May-2024, Available :http://www.jetir.org/papers/JETIR2405522.pdf

"ENHANCING MULTILEVEL INVERTER PERFORMANCE IN RENEWABLE ENERGY SYSTEMS WITH IMPROVED MODULATION TECHNIQUE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 5, page no. ppf189-f211, May-2024, Available at : http://www.jetir.org/papers/JETIR2405522.pdf