[物理]论文.doc

摘要 励磁控制系统是同步发电机的重要组成部分，它的特性好坏直接影响电机及电力系统运行的可靠性和稳定性。本文利用仿真的方式对励磁控制系统进行了研究并给出了相关结论，同时提出了一些新的控制算法，并建立了一个励磁控制系统仿真平台。 本文从同步电机和励磁系统的模型入手，根据研究需要修改了同步电机的仿真模型，详细地介绍了检测单元、控制单元和励磁系统主回路模型，在总结普通PID调节方式不足的基础上提出了一种模糊PID控制方式。 除了对通用的励磁控制算法进行仿真分析外，本文还建立你了以状态方程表示的单机-无穷大系统的数学模型。针对这种模型对励磁控制系统进行常规PID仿真，并且进一步引进了模糊控制的基本理论，构建模糊PID控制器，对同步发电机励磁控制系统进行模糊PID仿真研究。 最后，鉴于励磁控制系统仿真的重复性及操作的繁琐性，本文建立了一种基于MATLAB GUI的励磁控制仿真平台， 可以方便地实现对参数的设置与修改、模型的查看和修正、仿真的显示及相关的辅助操作等等，可以极大地简化仿真的操作过程，提高仿真的效率。另外，此平台的实现也为其它系统类型仿真界面的建立提供了重要的参考。 关键词：同步发电机；励磁控制；模糊控制；仿真平台 Abstract Excitation control system is an important part of synchronous generator, it features a direct impact on the motor and power of the system operation reliability and stability. By using the way of simulation of excitation control system are presented and the conclusion, and put forward some new control algorithm, and set up a excitation control system simulation platform. This article from the synchronous motor and the model of excitation system, according to the need to modify the simulation model of synchronous motor and introduced the detection unit, the control unit and excitation system of main circuit model, at the conclusion of the ordinary PID adjustment methods are put forward based on the shortage of a fuzzy PID control method. In addition to general excitation control algorithm the simulation analysis, this paper has established the state equation said to you of single machine-· mathematic model of the system. According to this model for the excitation control system for the conventional PID simulation, and further introduced the basic theory of fuzzy control, constructing fuzzy PID controller, the synchronous generator excitation control system of fuzzy PID simulation. Finally, in view of excitation control system simulation and operation of repeatability of the red tape sex, this paper established a kind of based on MATLAB GUI excitation control simulation platform, can be realized for parameter setting and modificatio