Abstract:The three-level inverter is suitable for high voltage and large capacity occasions for its advantages such as simple topology,less devices,and small voltage stress on each power transistor.Compared with the legacy two-level inverter,three-level inverter has more output levels,lower voltage and current harmonic content,and better sine waveform.A Model Predictive Current Control (MPCC) scheme is proposed for Interior Permanent Magnet Synchronous Motor (IPMSM) to improve its current dynamic response speed,and a second-order delay compensation strategy is presented to solve the time delay in control system.Validity of the proposed MPCC scheme is confirmed by simulation.The simulation results showed that the IPMSM-MPCC driven by three-level inverter has smaller harmonic content in output current waveform,better dynamic and steady-state performance,compared with that driven by two-level inverter.