摘要:介绍了三相异步电机的结构和原理，以及几种常见的交流调速系统，并着重阐述了调压调速系统。通过对调压调速系统各模块的分析，利用Matlab/Simulink建立了三相异步电机调压调速系统开环和闭环模型，得出了两种情况下的仿真结果，并对结果进行了分析、比较。本次仿真运用了软件中许多现成的模块，并将实验中所建模块封装起来，以便下次使用。使用时只需调出所需模块并置入相应的电机参数，就可方便地进行仿真，而且仿真的各变量结果可靠、稳定，证明该模型具有快捷、灵活、方便、直观等一系列优点。通过对三相异步电机的调压调速系统的仿真，验证了建模方法的有效性，并为以后在此基础上进行其他电机或调速系统研究提供了借鉴和方便。
关键词：三相异步电机；调压调速；Matlab/Simulink；仿真
Abstract:Three-phase asynchronous motor is introduced the structure and principle, and several common exchange speed control system, and discusses the pressure regulating speed regulation system. Through to the pressure regulating speed regulation system of each module in analysis, using Matlab/Simulink established a three-phase asynchronous motor speed system pressure regulating open loop and closed-loop model, it is concluded that the two cases of simulation results, and the results are analyzed and compared. The simulation using the software many ready-made module, and will be built in the experiments that module package up, so that the next time use. Use only needed module and inserting accesses the corresponding motor parameters, can be convenient to the simulation, and the simulation results of the variables reliable, stable, prove the model has a fast, flexible, convenient, intuitive and so on a series of advantages. Through the surge of three-phase asynchronous motor speed system of simulation proves the validity of the method of modeling, and is later on that basis other motor or speed regulation system provides a reference for research and convenient.
Key words：three-phase asynchronous motor；voltage control；Matlab/Simulink；simulation
在用SIMULINK工具箱对开闭环系统进行仿真时，各模块均可从SimPowerSystem和Simulink模块库中找到。为了简化仿真模型，可先将同步六脉冲触发器电路和三相交流调压电路进行封装，使用时直接打开即可。需要注意的是，不仅各个模块间的连线要正确，各个模块的调节参数也必须互相匹配，如果不太匹配，那么这个系统的性能就会受到很大影响，往往会得不到想要的仿真结果。在调试当中往往会遇到这样的问题：电路的连接明明是对的，但是仿真结果就是不理想。后来查看了很多的资料才知道是各个模块的参数没有整定好，最后在老师的指导下下，不断更改相关参数设定，才得到了预期的仿真结果。所以，实验的成功，不仅仅要有正确的连线，参数的设定非常重要，我们要通过不断改变参数来实现实验的优化。
