摘要
本文提出了一种大型汽轮发电机励磁的自适应控制方案.该方案可以根据系统运行点的变化调整反馈增益矩阵,使系统保持设计点的动态品质.本文用数字计算机对自适应励磁控制器的效果进行了仿真研究,并与最优线性控制进行了比较.结果表明所设计的控制器能为系统提供良好的阻尼,显著地改善了系统的动态响应.动态品质及动态稳定性均优于基于二次型性能指标的最优控制.
An adaptive control scheme, with low computational requirements, applied to controlling the excitation of a synchronous generator is described in this paper. The adaption scheme adjusts the feedback gains of linear controller to improve the performance of system from operating point to operating point. Computer simulations are used to compare the response of the adaptive excitation controller with that of a linear optimal controllet. It has heen shown that the designed controller provides effective damping torque for power system and yields better system dynamic performance than that obtained by using linear optimal control.
