范文编号:JD223 字数:17978,页数:42 摘 要 本次设计的主要内容是用仿真的方法实现调速。近几年已经都有包含了电力电子器件和电机的模型,可以用于电力电子电路和电力拖动控制系统的仿真。本设计在电力电子和电力拖动控制系统的仿真就是在MATLAB/SIMULINK环境下,主要使用电力系统模块库和SIMULINK两个模块库进行。它为电力电子电路和系统的分析提供了崭新的方法,可以使复杂的电力电子电路、系统的分析和设计变得更加容易和有效,也是学习电力电子技术和电力拖动控制系统的重要手段。为了提高直流调速系统的动静态性能指标,通常采用闭环控制系统(包括单闭环系统和多闭环系统)。按反馈的方式不同可分为转速反馈,电流反馈,电压反馈。我们采用频域方法初步设计了闭环直流调速系统,给出了直流调速系统框图、参数计算方法与结果,并运用MATLAB/SIMULINK对系统进行了仿真。通过仿真,调节各项参数,得到了比较理想的结果。仿真表明,这种采用频域初步设计和系统仿真相结合的转速闭环直流调速系统的设计方法,方便获得系统良好的动态性能和控制效果,从而使直流调速系统的设计和调试变得更简单、经济、方便。 关键字:电流截止,调速系统,仿真
The design of the paper is to adjust speed by the simulation methods. In recent years there are power electronic devices and motor model to be used to build power circuit and electric drive control system simulation .The design of the power electronics and electronic drive control system simulation under condition of the MATLAB/SIMULINK. i.e. the power system module to SIMULINK, which provide a new way to make complex power electronic circuits systems analysis, design more easily and effectively, and learn an important method of power electronic circuits and systems analysis. DC adjusting speed system to improve the static and dynamic performance, usually use close-loop control system (including single-loop close-loop and multi-closed-loop system) according to feedback theory, feedback can be divided into different kinds of speed feedback, such as speed feedback current feedback and voltage The closed –loop DC adjust speed system is realized by frequency domain method and DC adjusting speed system diagram. Parameter calculation methods and results are given by MATLAB/SIMULINK .Parameters are adjusted and gain good performance .Results of simulation show that using both frequency domain method and simulation .DC adjusting speed system closed-loop speed make the system a good dynamic performance and effectiveness , so that design of DC adjusting speed system is more simple economic and convenient . Key word: current deadline,adjusting speed system,MATLAB 目 录
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