基于ADRC的发电机励磁系统控制研究

Studying on Generator Excitation Control Based on ADRC

针对带有参数不确定及外部扰动的励磁系统数学模型,采用自抗扰控制技术(ADRC)设计了励磁控制器。该方法不需要知道系统的内部模型,能有效克服系统的不确定性,系统响应快,算法简单,易于实现。仿真结果表明,这种控制方法能实时地估计与补偿系统内外扰动,有效提高了电压的控制精度,而且解决了励磁控制的快速性与超调性之间的矛盾,提高了系统的动态性能。

Aiming at differential mathematical of excitation system,under the condition of parameters uncertain and external disturbances,using Active Disturbance Rejection Control Technique(ADRC) design a controller of excitation system. The ADRC control technology can effectively overcome the uncertainty of the system and does not need to know the system's internal model. The system response is fast under this method which is simple and easy to carry out. The simulation results show that this control method not only can estimate and compensate the disturbance both inside and outside,effective in improving the precision of voltage regulation,but also solved the conflicts between the rapid response and overshoot of excitation control. Under this method,the dynamic performance of the system is enhanced.