无刷双馈电机的直接转矩控制仿真  

The Simulation of Brushless Doubly-Fed Machine and Direct Torque Control System

作　　者：宋颖慧[1] 李玉忍[1] 牟海涛[1] 张智慧[1] 

机构地区：[1]西北工业大学,陕西西安710129

出　　处：《微特电机》2012年第10期45-47,共3页Small & Special Electrical Machines

摘　　要：对无刷双馈电机(BDFM)进行了研究,建立其数学模型,通过d-q轴坐标变换,给出了基于转子坐标系的BDFM基本电磁方程、功率方程以及转矩方程。研究直接转矩控制(DTC)策略,建立基于磁链误差和转矩误差逆变器的开关状态表,在MATLAB/Simulink环境中搭建基于U-I磁链模型的DTC系统仿真模块。通过观察在不同情况下的磁链和转矩波形,进一步验证了无刷双馈电机DTC控制的良好调速性能。仿真结果表明,该控制方法可以有效地提高系统性能,大范围调速时有较好的动静态特性。The brushless doubly-fed machine （BDFM） was analyzed and its mathematical model was established. According to d-q coordinate transformation,the basic electromagnetic equations, the power equation and torque equation based on the motor rotor coordinate system were established. The direct torque control （ DTC ） strategy was researched and the switching state table of the inverter based on flux error and torque error was established. The simulation model of BDFM DTC system based on U-I flux model was built in MATLAB/Simulink. Better performance of BDFM DTC system was verified by observing flux and torque waveform in different occasions. The simulation results show that BEFM DTC system using the control method can improve the performance and achieve good dynamic and static characteristics in high speed range.

关 键 词：直接转矩控制 无刷双馈电机 MATLAB/SIMULINK 

分 类 号：TM346[电气工程—电机]