Experimental Study of 13-Level Cascaded H-Bridge Multilevel Inverter Using Sinusoidal Switching Angle Technique

A highly effective solution for medium voltage and high power applications is the multilevel inverter. Since it is not possible to directly link the power semiconductor switch to the high voltage network, the demand for Multilevel Inverters is rising. The fact that the THD (Total Harmonic Distortion) of these output-voltage waveforms decreases as the number of levels grows is one of the most crucial characteristics of the multilevel Inverter. This paper presents an experimental study on a 13-level cascade H-bridge multilevel inverter incorporating sinusoidal angle modulation technique. The study highlights the advantages of multilevel inverters and provides insights into voltage waveform quality, harmonic distortion, and overall system performance. Also the simulation analysis has been performed using PSIM software. The Inverter system has been developed by IGBT and Arduino Mega 2560 controller for creating PWM pulses. Experimental results have been compared with simulation results. The experimental validation confirms the accuracy and feasibility of the proposed modulation techniques. This research contributes to the advancement of multilevel inverter technology and offers guidance for future applications.