异步电动机转子磁场定向控制系统仿真研究毕业论文

本 科 毕 业 论 文（设 计）异步电动机转子磁场定向控制系统仿真讨论The Simulation Research on Asynchronous Motor Control System Based on Rotor Field-Oriented摘 要三电平逆变器因为其可以实现更高的电压等级，输出较少的谐波含量等优势在高压大功率的逆变场合得到了广泛的应用，而转子磁场定向控制是应用最广泛的调速方法。因此，本文对结合三电平逆变器的异步电机转子磁场定向控制的问题进行了讨论。文中在分析了三电平逆变器的拓扑结构与工作原理和三相异步电机的数学模型、坐标变换的基础上，深化讨论了转子磁场定向矢量控制系统的基本原理，设计了磁链和转速双闭环系统并给出了框图。最后，利用 MATLAB/Simulink 对系统进行了仿真。关键词：三电平逆变器；异步电机；转子磁场定向控制；MATLAB 仿真 The Simulation Research on Asynchronous Motor Control System Based on Rotor Field-OrientedAbstractThree-level inverter because it can achieve higher voltage grade, output less harmonic content of advantages in high pressure high-power inverter occasions a wide range of applications, and rotor field-oriented control is the most widely used control method. Therefore, this article chooses three-level inverter induction motor rotor field-oriented control for research. Based on the analysis of the three-level inverter topology structure and working principle and mathematical model of three-phase asynchronous motor, on the basis of the coordinate transformation, the in-depth study of the rotor field-oriented vector control system design, the basic principle of the rotor flux observer, flux and speed double closed loop system. Finally, has completed the design of control system and gives the diagram. MATLAB/Simulink on the system modeling and simulation. Key words：Three-Level Inverter; Asynchronous Motor; rotor field oriented control;MATLAB simulation目 录摘要..................................................................IAbstract..............................