Hybrid Modulation for Reduced Switches AC-AC Multi Frequency Converter

Abstract

This paper presents the Hybrid Modulation Technique for single-phase AC-AC multi-Frequency converter to overcome the local square wave overshoot in the output waveform, which is responsible for harmonics content in the converter and to get better smooth voltage waveform. Additionally, by using SPWM (Sinusoidal Pulse Width Modulation) and TPWM (Trapezoidal Pulse Width Modulation), a comparative analysis is done; it shows how converters behave with different modulation techniques. The detailed study of converter and modulation techniques is done here, including operation, block diagram, and mathematical calculations. All the studies and experimental operations are performed using MATLAB Simulink model simulation, and the switch used for the converter is MOSFET.