PMSM fed by 3-level NPC sinusoidal inverter with discrete state feedback controller

What is it about?

In this paper designing process of discrete non-stationary linear-quadratic speed regulator for PMSM is depicted. In order to reduce electromagnetic torque ripple of motor, controlled sinus wave inverter with LC filter is used.

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Why is it important?

The novelty of the proposed system consists in one state feedback controller used in order to control speed of the motor and to provide true sine wave of the motor voltages. Use of non-stationary controller causes that linearization process of the plant (i.e. motor with inverter and LC filter) is not needed. Simulation results are compared with results obtained for classical structure (i.e. PMSM fed by 2-level inverter).