摘要
详细研究了带非线性负荷的交直流并联系统发电机励磁控制和直流系统控制,将M导数、M括号以及MIMO微分代数系统反馈线性化技术应用到交直流并联多机系统非线性控制器设计中,提出了具有微分代数形式的零动态设计。通过合理选择输出量作为坐标变换量,得到微分代数系统模型的Bronovsky标准形式。针对一个含有AC/DC的多机系统进行仿真,研究结果表明,所设计的非线性控制器与传统的PID控制器相比具有较好的阻尼特性,该控制器能进一步提高系统的动态稳定性。
The excitation control and HVDC control of AC/DC parallel power system with nonlinear load are studied in this paper. The M derivative, M bracket and MIMO feedback linearization based on nonlinear differential algebraic system （NDAS） are introduced into the design of nonlinear controller for parallel AC/DC multi-machine power system, and the zero dynamics design with differential algebraic form are presented. By selecting appropriately the output variables as the coordinate transformation variables, Bronovsky normal form for NDAS is derived. The simulation results for a multi-machine power system with parallel AC/DC transmission lines show that the nonlinear controllers have better damping characteristic and can improve the dynamic stability of the studied system in comparison with the conventional PID controller.
出处
《电工技术学报》
EI
CSCD
北大核心
2007年第1期114-119,共6页
Transactions of China Electrotechnical Society
