Volume - 4 | Issue - 1 | march 2022
DOI
10.36548/jucct.2022.1.005
Published
09 May, 2022
This paper proposes Level shifted Pulse Width Modulation (PWM) methods for single phase transformerless Multi Level Inverter (MLI). Many of the existing topologies have high variations in Common Mode Voltage (CMV) and high leakage current. The proposed topology with level shifted PWM technique for five level single phase MLI, reduces the variations in CMV, minimizes the leakage current according to VDE0126-1-1 standard and the reduced number of switches makes the losses less than the conventional topologies. This topology reduces the current THD. Finally, simulations are carried in MATLAB/Simulink for different inverter topologies.
KeywordsLevel Shifted PWM single phase Multi Level transformer less inverter topologies Leakage current reduction Common Mode Voltage