异步电动机直接转矩控制系统的研究

Study on direct torque control for asynchronous motor

目的为提高直接转矩控制系统的动态性能,对系统进行建模与仿真。方法采用改进的转矩估算模型,通过MATLAB/SIMULINK仿真软件包,建立控制系统和异步电动机的仿真模型。结果建立新的转矩估算模型并应用到控制系统中。结论研究表明采用改进的转矩估算模型可以提高异步电动机直接转矩控制系统的动态性能。

Aim In order to improve the dynamic performance. modeling and simulation based on MATLAB/SIMULINK were used in the control system of the DTC（Direct Torque Control）. Methods By adopting the improved model of the torque estimation, the simulation model of the control system and the asynchronous motor was established in the environment of the MATLAB/SIMULINK software package. Results The new model of the torque estimation, which can be applied to the control system, was constructed. Conclusion The experimental results indicated that the dynamic performance of the DTC control system for asynchronous motor is enhanced by the improved model of the torque estimation.