Design and Development of Seven Stage Inverter for Driving AC Induction Motor

This research study proposes a novel three-speed AC motor drive that uses three phases. By connecting four regular 2-level VSIs in series, similar voltage and current analysis might provide more power to the open-end windings of a double 3-stage engine (lopsided six-stage machine). While implementing the proposed control model, the power supplied to the engine will be divided among the four DC sources at each exchanging step, resulting in voltage waveforms with several peaks, similar to those produced by a three-level inverter. The simulation data required to verify the validity of the proposed AC motor drive has also been provided.