Field-weakening control for SPMSM based on final-state control considering voltage limit

SPMSMs (Surface Permanent Magnet Synchronous Motors) are employed for many industrial applications. SPMSM drive systems should achieve fast torque response and wide operating range. In this paper, in order to fulfill fast response in field-weakening region, field-weakening control based on final state control (FSC) is proposed. FSC settles state variables in a final state from an initial state with feedforward input during finite time. Previously, in the single-input single-output system, FSC considering input limit with linear matrix inequality was proposed. It is adapted to SPMSM which is the two-input two output system in this paper. Finally, simulations and experiments are performed to show that the proposed method can achieve fast field-weakening control.