同步发电机光控无刷励磁系统的研究

基于普通无刷励磁系统存在的问题,提出了一种新型同步发电机无刷励磁控制系统一光控无刷励磁控制系统,它是在普通无刷励磁控制系统中用可控器件取代不可控的二极管整流,通过光电耦合形式实现对励磁电流的直接控制,并且利用Matlab／Simulink仿真软件,分别对普通无刷励磁系统和光控励磁系统进行了建模、分析和仿真,并对仿真结果进行了比较。结果表明：光控励磁系统对于提高同步发电机的响应速度,改善电力系统的暂态和稳态性能有明显效果。

Optical-control Brushless Excitation System of the Synchronization Generator

Because of the problems that exist in the brushless excitation control system.The paper presents a novel brushless excitation control system of the synchro- nization generator-optical control excitation system.It substitutes controllable devices for uncontrollable diode on brushless excitation control system,directly controls excitation current by photoelectric coupler,and Mathemati- cal model,analysis and simulation are given on the soft- ware MATLAB/Simulink about the brushless excitation control system and the optical control excitation system, then the paper contrasts the results of the two systems. The results prove that the optical control excitation sys- tem can promote the response ratio and improve the steady- state and transient state characteristic of the power system.