一种并行选择电压矢量组合的永磁同步电机直接模型预测转矩控制方法  

A Direct Model Predictive Torque Control Method for Permanent Magnet Synchronous Motors with Parallel Selection of Voltage Vector Combination

作　　者：许宇豪 乔社娟 肖海峰 高文 马昭 XU Yuhao;QIAO Shejuan;XIAO Haifeng;Gao Wen;Ma Zhao(School of Electronic Engineering,Xi′an Aeronautical Institute,Xi′an 710077,China)

机构地区：[1]西安航空学院电子工程学院,西安710077

出　　处：《西安航空学院学报》2024年第5期46-51,共6页Journal of Xi’an Aeronautical Institute

基　　金：陕西省科学技术厅自然科学基础研究计划项目(2024JC-YBQN-0440);陕西省教育厅服务地方专项(23JK0496);西安航空学院校级科研基金项目(21KY0208)。

摘　　要：为了实现双电压矢量在整个控制周期内的全局最优性能。提出一种并行选择电压矢量组合的永磁同步电机直接模型预测转矩控制方法,所提方法采用并行模式选择电压矢量,以确保电压矢量组合的最优性和作用时间的有效性。首先,根据永磁同步电机数学模型,采用前向欧拉法推导静止坐标系下的预测模型并给出成本函数;其次,基于无差拍控制原理,从参考定子磁链中获得参考电压矢量,定位其所在的扇区,确定候选电压矢量及其组合方式;最后,通过划分扇区的子区域,在不使用权重系数的情况下直接获得最优电压矢量组合。实验结果表明,所提方法电流纹波小、响应速度快、执行时间短。研究结果为级联控制方式保证电压矢量组合的全局最优性提供方法。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.

关 键 词：直接模型预测转矩控制 永磁同步电机 电压矢量 成本函数 

分 类 号：TM341[电气工程—电机]