【摘要】 发电机励磁控制中,控制器的超调会使调节系统进入强非线性区,影响控制性能.鲁棒控制分析表明,在强干扰下,控制器性能指标越好,越容易进入超调状态.为此,采用增益矩阵反馈抗饱和理论,设计包含抗饱和补偿环节励磁控制器.通过线性矩阵不等式求解,得到满足限幅约束的可行解,从而得到补偿环节的增益矩阵.当控制器过调时,补偿环节会加以修正.仿真分析表明,在大扰动下,附加抗饱和环节的励磁控制器能有效地抑制控制器超调,提高发电机稳定控制能力.更多还原

【Abstract】 The overshoot of generator excitation controllers often makes the controller operation into the strong nonlinear area with non-ideal control performance.Robust control analysis results reveal that,under the strong interference,the better the controller performance indexes,the easier to get into the overshoot state.Anti-saturation theory based anti-saturation excitation controller with gain matrix feedback is proposed in this paper.By solving the linear matrix inequality,the feasible solution with the amplitude constraint and the gain matrix of compensation part are obtained.When the controller is overshoot,it is adjusted by compensation part.Simulation results show that the extra anti-saturation part is capable of effectively suppress the controller overshoot and improve stability under large disturbances.更多还原