Design a new PWM switching technique in multilevel converters

Designing inverter using the traditional Sinusoidal Pulse Width Modulation (SPWM) technique would require adding filter elements to minimize the output voltage signal distortion. A novel algorithm called Clipped Sinusoidal Pulse Width Modulation (CSPWM) is introduced to reduce the THD and eliminate the high order harmonic frequencies. This technique proposed using an isolation transformer to further block the DC component and improve the total harmonic THD. The proposed technique is discussed. The simulation indicated some peculiar characteristics of the proposed inverter. The analysis is successfully carried out using PSIM software