異步電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)的Matlab仿真:在對直接轉(zhuǎn)矩控制的基本原理進(jìn)行充分分析的基礎(chǔ)上,采用圓形磁鏈軌跡控制方法,建立了異步電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)的利用Matlab/ Simulink 軟件模型。在對磁鏈、轉(zhuǎn)矩估算模型的分析中,綜合了現(xiàn)有幾種模型的優(yōu)點(diǎn),設(shè)計出了磁鏈轉(zhuǎn)矩估算的U I 模型,并制定了優(yōu)先調(diào)節(jié)轉(zhuǎn)矩的控制策略。仿真結(jié)果表明,所設(shè)計的系統(tǒng)模型基本上是成功的。
關(guān)鍵詞:異步電機(jī);直接轉(zhuǎn)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