基于双参考系的感应电机模型预测转矩控制  

Predictive Torque Control of Induction Motor Drives Based on Dual Reference Frame

作　　者：杨鹏 廖晓群 江元 张勇红 侯应龙 YANG Peng;LIAO Xiaoqun;JIANG Yuan;ZHANG Yonghong;HOU Yinglong(State Grid Gansu Electric Power Company,Lanzhou 730050,Gansu,China;School of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710054,Shaanxi,China)

机构地区：[1]国网甘肃省电力公司,甘肃兰州730050 [2]西安科技大学通信与信息工程学院,陕西西安710054

出　　处：《电气传动》2021年第19期29-35,共7页Electric Drive

基　　金：国网甘肃省电力公司科技项目(52272317000c)。

摘　　要：在基于无速度传感器的感应电机控制策略中,以转子速度作为自适应变量的模型参考自适应观测器多作为转速估计的基本方法。然而,该方法中转子速度的估计精度不仅影响定子磁链的观测精度,同时也影响电磁转矩预测模型的预测精度。为消除上述缺点,提出了一种基于双坐标参考系的定子磁链观测器,其基本原则是在定子坐标系表示电压模型,在转子磁链矢量坐标系表示电流模型,以取消速度自适应项的方式分离了定子磁链的观测与转子速度估计。此外,与双参考系观测器相匹配,提出了基于双参考系的感应电机电磁转矩预测模型。提出的算法在2.2 kW感应电机实验平台上进行了实验验证,实验结果表明,所提出的控制算法在感应电机全速范围内均具有良好的性能表现。For sensorless control of induction motor,model reference adaptive observers are usually used,where rotor speed is considered as an adaptive variable.The accuracy of rotor speed estimation not only affects the accuracy of flux observation,but also affects the accuracy of the torque prediction model.To overcome the drawbacks,a stator flux observer based on two coordinate reference frame was proposed,which represents voltage and current mode in stator and rotor flux reference frames,respectively.The proposed observer decouples flux observation and speed estimation by eliminating speed adaptation.In addition,a prediction model of induction motor electromagnetic torque based on double reference frame was proposed to match the double reference frame observer.The proposed algorithm was verified on a 2.2 kW induction motor experimental platform.Experimental results show that the proposed algorithm has good performance in both low-speed and high-speed areas.

关 键 词：感应电机 模型预测控制 双参考系 鲁棒性 

分 类 号：TM28[一般工业技术—材料科学与工程]