Comparative Performance Analysis of Sinusoidal Pulse Width and Space Vector Pulse Width Modulations for Off-Grid Inverters

Since alternating current is widely used in many systems, it is desired to convert the direct current input voltage to a symmetrical alternating current output voltage with the desired amplitude and frequency. For this purpose, first of all, information about inverters and multilevel inverters is given in the study. Then, pulse width modulation techniques are explained and the working logic of Sinusoidal Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM) techniques are examined in detail among these modulation techniques. Finally, the simulations of the inverters on R (Resistive) and R-L (Resistive-Inductive) loads are modeled using the grid-independent two-level SPWM and three-level SVPWM control method in MATLAB/Simulink environment. These measurements made in the Simulink environment were compared with the theoretical calculations and it was tried to determine which of the models showed the best performance in terms of power quality.