汽轮发电机自适应Terminal滑模综合控制

Integrated adaptive Terminal sliding mode controller for turbo-generator

提出了汽轮发电机励磁与汽门协调Terminal滑模控制。针对发电机综合控制存在的两个输入变量,通过构造两个非奇异的Terminal滑模面,实现解耦控制。Terminal滑模面中含有非线性函数,使得误差能够快速收敛,从而取得良好的控制效果。利用自适应律实时估计扰动上界,从而使控制器具有很强的鲁棒性。通过李亚普洛夫理论证明了控制系统的稳定性。仿真结果表明,所设计的汽轮发电机自适应Terminal滑模综合控制器能够快速阻尼功率振荡,提高电力系统的稳定性,维持机端电压。

A coordinated Terminal sliding mode control of turbo-generator excitation and valve is proposed.Two non-singular Terminal sliding surface are constructed to realize decoupling control of two input variables existing in integrated control of generators.Terminal sliding surface contains a non-linear function,allowing the error a fast convergence to achieve good control effect.Using adaptive law to estimate disturbance upper bound,it makes the controller have strong robustness.According to Lyapunov theory,the stability of this control system is proved.The simulation results show that the turbo-generator integrated adaptive Terminal sliding mode controller can quickly damp power oscillations,improve power system stability,and maintain the terminal voltage.