基于微分代数的发电机非线性励磁控制器的设计

Nonlinear excitation controller design for generator based on differential algebraic models

针对多个控制目标的非线性微分代数系统,将系统模型做适当的变换,借助线性系统的控制规律得出非线性的控制律.以单机无穷大系统为例设计了发电机的非线性励磁控制律.仿真结果表明该控制策略既能较好地增强系统的稳定性,又能提高系统的控制精度,使各个状态量快速地追踪其给定值,能有效地解决微分代数系统的非线性控制设计问题,具有良好的应用价值.

With the appropriate transformation to the system model, this paper proposes a nonlinear control strategy for differential algebraic system based on the linear control law. Applying the method to single machine infinite-bus power system, which belong to a nonlinear differential algebraic model, a nonlinear excitation control law has been designed. Simulation results show that the control law can enhance the sta- bility of the system and improve the regulative precision of generator terminal voltage and make each state trace for their given values rapidly. It is shown that the proposed method can effectively solve the design problem for nonlinear differential algebraic system： and it is valuable for application.