异步电机直接转矩全速范围控制策略  

Direct Torque Control Method of Induction Motor in Whole-speed Range

作　　者：霍健鹏[1] 张金萍[1] 潘玉田[1] 

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《机械工程与自动化》2010年第6期143-145,共3页Mechanical Engineering & Automation

摘　　要：针对直接转矩控制中两种磁链控制策略的缺陷,提出了一种结合两种策略优点的控制方案:在高速区,采用六边形磁链控制方案;在低速区,采用近似圆形磁链控制方案。仿真实验结果表明,该方法能实现六边形磁链和近似圆形磁链轨迹的平滑切换,在全速范围内改善了磁链和转矩控制性能。In light of the shortcomings of two control methods in direct torque control,which are hexagon flux control method and approximate circle flux control method,a control strategy which has the advantages of the two control methods is proposed in this paper.Hexagon flux control method is used in high speed region and approximate circle flux control method is used in low.The simulation results show that this method can achieve smooth translation between the flux track of hexagon and the flux track of approximate circle,and improve the system control performance of flux and torque in whole-speed range.

关 键 词：直接转矩控制 全速范围 磁链控制 

分 类 号：TM343[电气工程—电机]