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，即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。

Optically controlled brushless excitation system of synchronous generators

Based upon the problems existing in the conventional brushless excitation system, a new type synchronous generator burshless excitation system, that is, optically controlled excitation system is put forward. In the new design, the uncontrollable diode rectifier in the conventional brushless control system was replaced by the controllable components and the direct control of the excitation current can be realized by the photoelectric coupling. With MATLAB/Simulink simulation software the modeling, analysis and simulation are carried out respectively for the conventional brushless excitation system and the optically controlled excitation system and the results of the simulation are compared also, showing that the optically controlled excitation system proves very effective on the enhancement of the response velocity of the synchronous generator, and the improvement of the transient and stable behavior of the electric power system.