自控式同步电动机调速系统的仿真研究

Simulation Study on a Self-controlled Synchronous Motor Variable Speed Drive System

建立了自控式同步电动机调速系统的数字仿真模型。主要考查了在起动、变速、突加及突减负载情况下，系统直流环节的电流和电机转速的变化。试验表明：起动时间及电流幅值的计算误差小于５％，转速及电流变化曲线与实际情况基本吻合。证明数学模型和计算程序是正确的。提供的仿真程序简单实用，在ＰＣ机上即可运行。

A computer simulation model has been set up to study a variable speed drive system for self-controlled synchronous motors. The research is focused on the simulation of the DC link current transient and speed changes under different operating conditions. such as starting. speed controlling, loading and unloading. etc. Experimental results show that the calculating errors about starting time and peak current during starting is less than 5%, and the current and speed curves agree well with the test results. It is verified that the simulation model and the programme used are correct. Tte simulation programme is simple and easy to use. and can be used on personal computers.