Performance Analogy of Multilevel Inverter with Flipped Sine PWM

Authors- Shara Kandula, Professor Dr.G.Annapurna

Abstract-Multi-level inverters had the potential of producing better outputs, reduce harmonics in output. They find applications in various fields like motor drives, solar energy systems, and adjustable speed drives. Among different types, cascaded multilevel inverters consists of two DC sources are commonly used in medium to high power needs. This paper compares two control strategies, Sine PWM and flipped Sine PWM, for a cascaded H-Bridge MLI. Inverted/Flipped Sine PWM(ISPWM/FSPWM) technique provides better performance when compared to Sine PWM (SPWM). FSPWM significantly lower the total harmonic distortion (THD) and switching losses compared to traditional SPWM. This paper conducts simulations on three-phase three and five level cascaded H-bridge inverters employing both FSPWM and SPWM control strategies through MATLAB/SIMULINK software.

DOI: /10.61463/ijset.vol.12.issue5.286