PID励磁控制对比例式励磁调节效果的改善

The limitation of proportional control and the improvement of PID control of the excitation systems

运用小扰动分析法及古典控制理论中的稳态误差理论,分析了比例式励磁控制方式在按系统稳定和按电压调节精度对放大倍数要求之间的矛盾,以及PID励磁控制方式对这一问题的改善.

When proportional control is adopted in the synchronous generator's excitation system, there is a conflict between the stability and the precision of voltage regulation. This paper analyzes this conflict and points out that PID control can solve it by using small disturbance method and control theory.