三相异步电机毕业设计

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1、 I 摘 要 随着电机控制技术的不断发展,在实际中应用越来越多的交流调速系统已经取代了 直流调速系统。由于异步电机是一种复杂的多变量的、强耦合的非线性系统,所以利用 计算机仿真的办法构造一个实验系统进行异步电机的分析是一种很好的研究手段。 本文主要首先介绍三相异步牵引电动机结构和构造建立电机数学、物理模型，对比 直流电机电磁转矩和异步电动机电磁转矩，结合矢量控制的基本思想和基本概念，完成 了对三相交流异步牵引电动机在三相静止坐标和两相静止坐标系上的数学模型，经过坐 标转换得到交流牵引电机的模型。 然后通过 Matlab/Simulink 的模块简化搭建功能完成三 相异步牵引电动机最终的仿真模型

2、，并在 Mutlab 系统环境下实现对电动机的仿真，观 察异步电机空载转矩和负载转矩过程中的电流、转速、转矩的变化，对结果与理论结果 进行比对分析，证实了该方法的简便直观、高效快捷和真实准确性。 关键词：异步电机；建模；仿真；坐标变换；关键词：异步电机；建模；仿真；坐标变换； II Abstract With the development of motor control technology, AC drive system is used more and more in practice has replaced the DC speed regulating system. The

3、asynchronous motor is a strongly coupled nonlinear system is a complex multivariable, using the way of constructing, analysis and computer simulation of an experimental system of asynchronous motor is a very good research tools. This paper first introduces the structure and the structure of three ph

4、ase a synchronous traction motor mathematical, physical model of motor, compared with DC motor electromagnetic torque and asynchronous motor electro magnetic torque, combined with the basic theory of vector control and the basic concept,the mathematical model in the three-phase static coordinate and

5、 two-phase static coordinate system on the three phase asynchronous traction motor, the AC traction the motor model to get the coordinate conversion. Then through the Matlab/Simulink module to simplify the building function to finish the simulation model of the three-phase asynchronous traction moto

6、r end, and realize the simulation of the motor in the environment of Mutlab system, variable current,speed, torque of asynchronous motor load torque and load torque in the process, the results were compared with the theoretical results and analysis,confirmed this method simple and intuitive, fast and accurate. KeyWords: Induction motor, Modeling, Simulation, Coordinate transformation 目 录 摘 要 . I Abstract. II 目 录 .III 1 绪论 1 1.1 研究背景及意义 . 1 1.2 国内外研究现状 . 1 1.3 本论文研究的主要内容 . 1 2 三相异步电机的构