Predictive torque control of permanent magnet synchronous motor model based on PRD value function
Aiming at the problem that the model predictive torque control(MPTC)algorithm has poor robustness when the model parameters are mismatched,a value function of proportional-resonance-differential(PRD)type is proposed in the MPTC control system of permanent magnet synchronous motor,which can selectively compensate the harmonics at the specified frequency through resonance error operation,so when the resonance frequency and motor speed are consistent,the torque and flux linkage can be adjusted and tracked without error.Through differential error operation,the trend of error change is predicted,and the oscillation change of torque and flux linkage error is suppressed.The simulation results show that MPTC with PRD value function has fast dynamic response,can suppress torque and flux ripple,and reduce the dependence of MPTC on model parameters.
predictive torque controlvalue functionPRD controllerrobustnesspermanent magnet synchronous motor
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