摘要
精密品质的400Hz船用中频供电系统是特种装备可靠运行的重要保障,研究高性能的中频同步发电机励磁控制策略和工程应用非常重要。本文分析了中频供电系统瞬变电压调整特性,提出了具有电流前馈的中频无刷励磁系统PID控制算法,能够对励磁机的时间常数进行一定的补偿,降低其滞后效果,因此增加了励磁系统小信号响应带宽的能力,以满足中频供电系统在突加或突卸负载的工况下,中频发电机机端输出瞬变电压具有快速的恢复时间。实验结果与仿真相符合,系统输出电压具有良好的动稳态性能,表明了所提出的控制方案是有效的。
It is very important to study medium frequency synchronous generator＇s excitation control strategy and application in shipboard,for it can guarantee the safe operation of special equipment in high quality 400Hz medium frequency electrical system.In order to make the medium frequency synchronous generator terminal＇s transient voltage restores as quickly as possible under the circumstances of suddenly increased and decreased load,this paper analyzes regulating property of the transient voltage of medium frequency electrical system and puts forward PID with current feed-forward controlling algorithm for medium frequency brushless excitation system,which compensates the exciter time constant to some extent,decreases its delaying effect,and increases the small signal response bandwidth of the excitation system.The simulation and experimental results verify the effectiveness of the proposed algorithm,which demonstrate that the proposed control system has good dynamic stability and steady-state performance.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第6期102-107,共6页
Transactions of China Electrotechnical Society
关键词
中频
同步发电机
励磁控制
电流前馈
Medium frequency
synchronous generator
excitation control
current feed-forward
