直流调速系统的仿真研究

Simulation of DC Speed Control System

直流电机具有良好的启动、制动性能,易于在大范围内实现平滑调速,在许多高性能可控电力拖动系统中得到广泛应用。使用静止的可控整流器来获得可调的直流电压,分别对开环、转速单闭环以及转速电流双闭环直流调速系统的电路原理与性能指标进行了分析研究。最后运用MATLAB工具箱建立了其仿真模型,仿真结果验证了三种调速方法的合理性、可行性,并比较了其优缺点与适用范围。

DC motor is of good performance of starting and braking, easy to control speed smoothly in a wider range, so DC motor has been widely used in high-performance electric drive control system. Adjustable DC voltage has been provided using static SCR rectifier in this paper, then the principle and performance of the circuit have been studied on open-loop control system, single closed-loop controlled system using speed and double closed-loop control system using speed and current separately. Finally the simulation models have been established using MATLAB Simulink toolbox, and the simulation results have verified the feasibility of the three speed control systems, and the features of the three systems have been analyzed.