永磁同步电动机双优化三矢量模型预测电流控制  

Double Optimization Three-vector-based Model Predictive Current Control for Permanent Magnet Synchronous Motors

作　　者：徐艳平[1] 王极兵 周钦[1] 张保程 XU Yanping;WANG Jibing;ZHOU Qin;ZHANG Baocheng(Department of Electrical Engineering, Xi＇an University of Technology, Xi＇an 710048, Shaanxi Province, China)

机构地区：[1]西安理工大学电气工程系

出　　处：《中国电机工程学报》2018年第6期1857-1864,共8页Proceedings of the CSEE

摘　　要：在双矢量模型预测电流控制策略中,未对所有可选电压矢量组合进行遍历寻优,备选电压矢量覆盖范围有限,直交轴电流仍有较大的脉动。针对该问题,该文以电流为控制变量,提出一种永磁同步电动机双优化三矢量模型预测电流控制策略,该策略在每个采样周期均作用2个有效电压矢量和1个零矢量,在选择第二个有效电压矢量时对所有可选电压矢量进行寻优,遍历全部可选的5组三矢量组合,扩大备选电压矢量覆盖范围。实验结果表明：所提的双优化三矢量模型预测电流控制策略有效地减小直交轴电流脉动,提高系统的稳态性能。In the two-vector-based model predictive current control strategy,combinations of all optional voltage vectors are not evaluated,and the coverage range of candidate voltage vectors is limited.So direct and quadrature components of current still had large ripples.For this problem,a double optimization three-vector-based model predictive current control strategy for the permanent magnet synchronous motor was proposed in this paper.Two nonzero voltage vectors and one zero vector were applied in each sampling period,and the second effective voltage vector could be selected in the all optional voltage vectors.The optimal voltage vector was selected by evaluating all the optional five groups of three vector combinations,and the coverage range of candidate voltage vectors was expanded.Experimental results show that the proposed control strategy reduces effectively direct and quadrature current ripples and improves the steady-state performance.

关 键 词：永磁同步电动机 双优化 三矢量 模型预测电流控制 电流脉动 

分 类 号：TM351[电气工程—电机]