In order to achieve the global optimal performance of dual voltage vectors in the control cycle,this paper proposes a direct model predictive torque control method for permanent magnet synchronous motors(PMSMs)with parallel selection of voltage vector combination,which adopts parallel selection mode for voltage vectors to ensure the optimality of voltage vector combination and the effectiveness of action time.Firstly,based on the mathematical model of PMSMs,the forward Euler method is used to derive the prediction model in the stationary coordinate system.Then,based on the principle of dead-beat control,their respective sectors are located,and candidate voltage vectors and their combination methods are determined.Finally,by dividing the sectors into sub-regions,the optimal voltage vector combination is directly obtained without the use of weighting coefficients.The experimental result shows that the proposed method has the advantages of small current ripple,fast response speed,and short execution time,and the research results provide a method for ensuring the global optimality of voltage vector combination in cascade control mode.
direct model predictive torque controlpermanent magnet synchronous motorvoltage vectorcost function
维普
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