双三相永磁同步电机的多矢量模型预测电流控制策略  

Multi-Vector Model Predictive Current Control Strategy for Dual Three Phase Permanent Magnet Synchronous Motor

作　　者：张伟 赵耀 ZHANG Wei;ZHAO Yao(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《上海电力大学学报》2024年第5期475-483,共9页Journal of Shanghai University of Electric Power

摘　　要：针对双三相永磁同步电机在传统矢量控制中电流脉动较大的问题,提出了一种基于电压矢量合成原理的多矢量模型预测电流控制策略。首先,通过结合双dq解耦变换与三相解耦脉宽调制(PWM)算法,将电机的每组三相绕组视为基本单元。其次,在每个控制扇区内,通过选择2个有效电压矢量和1个零矢量,构造出所需的目标电压矢量,并将其纳入备选电压矢量集,以实现任意方向和幅值的电压覆盖。最后,采用dq轴电流的无差拍算法确定各矢量的作用时间。仿真结果表明,所提控制策略显著降低了电流脉动,增强了系统稳定性。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 

分 类 号：TM301.2[电气工程—电机]