基于输入-输出线性化的交流励磁发电机控制

根据单机无穷大系统中交流发电机(ACEG)的状态方程,推导出ACEG的四阶控制模型。基于模型的多变量、非线性,将输入-输出线性化理论应用到交流励磁发电机的控制中,得到输入-输出线性化方程。对线性方程用线性最优控制,得出以发电机功角、有功功率和无功功率为反馈控制量的非线性励磁控制规律。对线性化中重要的零动态问题进行了研究,保证所得控制系统的稳定性。单机无穷大系统仿真结果表明,这种输入-输出线性化的控制对增强系统稳定性具有一定的作用。

Excitation Control of AC-excited Generator Based on Input-output Linearization

Based on the state equation of AC-excited generator (ACEG) in a single-machine infinite bus system, a four-step dynamic analysis model is presented. Based on the nonlinearity of model and adjustable variables, input-output linearization is applied to excitation control of ACEG, to realize input-output linearization equation, optimally control the linear system,and draw a set of non-linear excitation control law, in which the power angle, active power and reactive power are control variables. To guarantee stability of control system, important linearization zero dynamic problem is studied. The simulation results of a single-machine infinite bus show that this design method is feasible and effectual.