【作者】 王西田； 于达仁； 陈陈； 杨秀；

【机构】 上海交通大学电器工程系； 哈尔滨工业大学动力工程系；

【摘要】 提出将同步发电机及其励磁系统看作扭振励磁控制的执行元件,采用直接反馈线性化方法补偿其非线性因素,避免小偏差线性化模型的参数摄动问题,从而提高扭振励磁控制系统的鲁棒性。综合 H_∞扭振模态观测器、独立模态空间鲁棒控制器和非线性反馈补偿律提出一种轴系扭振的鲁棒非线性控制策略, 在大范围工况下具有一致的全局性能,并且三个组成部分可以分别独立设计,另外可以方便地与常规非线性励磁控制律综合在一起而不影响后者阻尼低频振荡的性能。更多还原

【Abstract】 By considering the synchronous machine and excitation system as the actuator of torsional excitation control,it is suggested to use direct feedback linearization to compensate nonlinear characteristics of the actuator of torsional excitation control to avoid model parameter perturbation caused by deviation linearization and improve the robustness of torsional control system.A robust nonlinear control strategy of shaft torsional oscillations is proposed by integrating the H_∞ torsional modal observer,the independent modal space robust controller and the nonlinear feedback compensated law together,which have consistent performance over wide range operating conditions.Three components of the strategy can be designed respectively with little influence on each other.In addition,the robust nonlinear control strategy of shaft torsional oscillations can be expediently integrated with the conventional nonlinear excitation control without effect on performance of the latter.更多还原