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Multilevel inverter is an effective topology for
increasing power demand and reducing harmonics of AC
waveforms. This paper presents an efficient sevenlevel
asymmetric cascaded multilevel inverter suited for renewable
energy applications. A digital control method employing flip
flops has been proposed which reduces Total Harmonic
Distortion (THD) and switching losses compared to the
conventional PWM technique. Various performance
parameters namely THD, switching loss, firstorder distortion
factor (DF1) and secondorder distortion factor (DF2) is
analyzed and a simulation model of the proposed digital
control is developed in MATLAB/SIMULINK. Hardware
prototype will be built to validate the results.
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