Model predictive direct speed control of interior permanent magnet synchronous motor

This paper presents an investigative work about the direct speed control (DSC) of interior permanent magnet synchronous motor (IPMSM) based on finite control set model predictive control (FCS-MPC). A compensation is applied to the speed prediction model because of the unknown load torque and varied rotary inertia. And a multi-constrained cost function with dynamically adjustable weight factors is designed to realize speed tracking and guarantee the currents operating points lay on q-axis in d-q axis frame. The effectiveness of the proposed strategy is evaluated through simulations.

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