感应电动机交叉耦合电压的内模解耦研究  

Research of Internal Model Control Decoupling for Induction Motor the Cross-coupling Voltage

作　　者：周渊深[1] 

机构地区：[1]淮海工学院电子工程系,江苏连云港222005

出　　处：《机床与液压》2008年第B07期357-360,292,共5页Machine Tool & Hydraulics

基　　金：江苏省高校自然科学基金项目(03KJD470036)

摘　　要：矢量变换后感应电动机数学模型中还存在M轴和T轴间交叉电势的耦合作用,影响调速系统的控制性能。在分析交叉耦合电势前馈解耦、反馈解耦原理和不足的基础上,研究了内模控制解耦方法。理论分析和仿真结果表明:前馈解耦要求电机的实际参数与模型参数匹配、实际电流准确复现给定电流;反馈解耦的条件是电机的实际参数与模型参数匹配。而内模解耦效果基本上不受电机参数变化和电流偏差的影响,解耦效果对电机参数变化的敏感性大为减小。In a vector-controlled induction motor （ IM）, the cross-coupling voltage between the M and the T components of the stator current impairs the characteristics of torque response. The principle and the deficiencys were analysed for the feedforward decoupling and feedback decoupling, and the decoupling control strategy was discussed based on Internal Model Control （IMC）. Theoreti- cal analysis and simulation results show that the feedforward decoupling performance is affected by the IM parameters and the stator current deviation, the feedback decoupling is only affected by the IM parameters deviation, but the IM parameters and the stator current deviation do not affect IMC decoupling effects, the sensitivity of decoupling effects to the IM parameters changes is reduced.

关 键 词：感应电动机 交叉耦合电势 内模解耦 

分 类 号：TM346[电气工程—电机]