Abstract
A three-phase current-source multilevel inverter is presented in this work. The stepped current waveform at the output is integrated by a first order capacitor filter and provides quasi-sinusoidal output and fast voltage control. A differential DC-DC chopper feeds the DC bus currents from a single voltage/power supply. A Finite Control-Set Model Predictive Control (FCS-MPC) algorithm modulates the multilevel current to synthesize the reference output voltage and also regulate the current on the auxiliary inductors within both cells of the inverter.
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