基于输入对状态反馈线性化的非线性励磁控制

Nonlinear excitation controller based on input-state linearization

将输入对状态反馈线性化的思想应用于发电机励磁控制系统,得出了一套实用的发电机非线性励磁控制规律,应用此方法和采用状态反馈精确线性化的方法推导出的非线性控制规律具有一致性,且比基于微分几何理论的状态反馈精确线性化方法更加简单实用。仿真证明该文提出的非线性励磁控制器在系统发生大扰动时比常规的AVR+PSS更能抑制系统的振荡,对增强系统稳定性具有一定作用。

The nonlinear excitation controller based on input-state linearization theory is proposed. The control law inferred from the proposed method has coherence with the result deduced from the exact linearization based on theory of differential geometry. Moreover, the method presented in this paper is more convenient and practical. Simulation results show that the proposed nonlinear controller can provide better damping characteristics than the general AVR+PSS does when the power system is subject to the small or large disturbance.Consequently the stability of the system could be enhanced with the proposed controller.