Abstract
A back-stepping adaptive control strategy is proposed to direct torque control (DTC) of surface permanent magnet synchronous motor (SPMSM) in order to solve some problems existed in conventional DTC. The output of the designed controller makes space vector modulation (SVM) possible, which further ensures the inverted switching frequency to be fixed. The stability of the controller is verified via Lyapunov stable theory. Simulation results show that the presented control strategy can solve these problems effectively and show strong robust to external disturbance and noise.
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