永磁同步电机直接转矩控制系统

Permanent magnet synchronous motor direct torque control system

针对永磁同步电机直接转矩控制系统,首先阐述了直接转矩控制原理,它是在维持定子磁链幅值恒定的前提下,通过电压空间矢量来调节定子磁链的旋转速度,从而控制转矩和转速。其次,在此理论基础上,简单地建立了系统的模型,说明了它的工作过程以及与异步电机直接转矩控制系统的不同。最后用SIMULINK仿真软件对其进行了建模和仿真,仿真结果表明了直接转矩控制应用于永磁同步电机的正确性和可行性,永磁同步电机直接转矩控制系统具有良好的稳态跟踪性能和优异的动态响应。

In view of permanent magnet synchronous motor direct torque control system, elaborates direct torque control theory , it is under the maintenance of stator flux linkage peak-to-peak value premise , adjusts the rotational speed of stator flux linkage by voltage space vector, thus controling torque and rotational speed .On this theory, the article establishes the system model simply, explains its work process and the difference from asynchronous motor direct torque control system. Finally uses SIMULINK simulation software is used to carry on the model and simulation, the simulation results manifest the accuracy and feasibility of direct torque control which is applied in permanent magnet synchronous motor. Permanent magnet synchronous motor direct torque control system has good stable and track performance and the outstanding dynamic response.