异步电机直接转矩控制系统的Matlab仿真

异步电机直接转矩控制系统的Matlab仿真:在对直接转矩控制的基本原理进行充分分析的基础上,采用圆形磁链轨迹控制方法,建立了异步电机直接转矩控制系统的利用Matlab/ Simulink 软件模型。在对磁链、转矩估算模型的分析中,综合了现有几种模型的优点,设计出了磁链转矩估算的U I 模型,并制定了优先调节转矩的控制策略。仿真结果表明,所设计的系统模型基本上是成功的。

关键词:异步电机;直接转矩;仿真;Matlab

Abstract : The flux and torque of stator of asynchronous machine are directly t racked , calculated and cont rolled in the stator oriented coordinates ,using the method of Park vector. The signal of PWM is built by dint of the discrete band band adjustment in order to cont rol opTImally the state of the switches of inverter and get the opTImal system′s dynaTIc and staTIc response. This text adopt s the method of chain orbit of round magnetism cont rolling on the foundation of fully analysis of basic principle of DTC. It also has set up the Matlab/ SIMUL IN K sof tware model of the direct torque cont rol system of asynchronous motor. In the process of analyzing and designing the model of calculating the torque and flux ,the U - I model is designed based on synthesizing the virtue of a few models and the st rategy of giving the torque priority is chosen. According to the result of the emulation ,the model designed in the thesis is proved correct ,and the result is satisfying.

Keywords :asynchronous elect rical machinery ;direct torque ;emulation ;Matlab