Aiming at the problem of large current ripple in traditional vector control of dual three-phase permanent magnet synchronous motor,this paper proposes a multi-vector model predictive current control strategy based on voltage vector synthesis principle.Firstly,this method regards each group of three-phase windings of the motor as a basic unit by combining dual dq decoupling transformation with three-phase decoupling pulse-width modulation(PWM)algorithm.Secondly,in each control sector,by selecting two effective voltage vectors and a zero vector,the required target voltage vector is constructed and incorporated into the set of alternative voltage vectors to achieve voltage coverage in any direction and amplitude.Finally,the deadbeat algorithm of dq axis current is used to determine the action time of each vector.The simulation results show that the proposed control strategy significantly reduces the current ripple and enhances the system stability.
关键词
双三相永磁同步电机/电流脉动/模型预测电流控制/矢量作用时间
Key words
dual three-phase permanent magnet synchronous motor/current ripple/model predictive current control/vector action time
维普
万方数据