Model Predictive Current Control for Multi-Level Inverter fed Speed Sensorless PMSM Drive

In this paper, to show the effectiveness of the torque ripple characteristics of a Permanent Magnet Synchronous Motor (PMSM) drive with respect to level of the inverter, the performance characteristics are analyzed for 2-level inverter, 3-leevel and 5-level inverters respectively. In the chronology of control strategies and in their developments Model Predictive Control (MPC) has been found as advanced and simplest control algorithm in motor control applications. Among them, Model Predictive Current Control (MPCC) doesn’t include weighing factors and unlike conventional control strategies it doesn’t involves cascaded PI blocks which made the control algorithm easier. Speed sensor usually exposed to more failures and the most dependent part for proper control action. Speed Sensorless operation is much needed. Model Reference adaptive system (MRAS) based approach is considered for speed sensorless operation. The operating behavior of the PMSM drive for 2-level inverter, 3-level inverter, and 5-level inverter fed MPCC based speed sensorless PMSM drive are simulated in MATLAB/SIMULINK simulation tool platform under various conditions as zero load, with load, and change in speed conditions.