摘要
实验与仿真表明,当系统参数配合不合理时,带阻容负载的独立发电机整流系统存在静态稳定性问题,通过理论计算、实验与仿真分析较为系统地研究了这一问题。其中理论计算需要建立包括二阶发电机简化模型、整流桥动态平均值模型、负载动态模型在内的系统状态空间模型,在此基础上运用一阶线性化方法在稳态运行点得到系统的小信号模型,最后运用特征值理论进行系统静态稳定性判断。通过实验、仿真及理论计算,总结了上述系统运行稳定性问题的规律,分析了系统静态稳定性问题的物理机理,并分别从参数与控制策略的角度提出了抑制系统静态不稳定的方法。
Results of experiment and simulation show that low-frequency oscillation will come forth in a standalone generator-rectifier system with capacitor-resistor load when its system parameters are not reasonable.This paper detailedly studies the issue by the methods of theory computation,experiment and simulation.The system state-space model must be built firstly to finish the theory computation,which includes the simplified 2-dimension model of generator,the dynamic average-value model of diode-bridge rectifier and dynamic model of load.Then the small-signal model of system will be obtained by the linearing method at a steady-state operation point.And finally the eigenvalue theory is used to estimate the system stability.On the ground of the experiments,simulations and theory computation,this paper summarizes the law of steady-state stability of such system,analyzes the physics mechanism,and presents the control methods for the issue from points of view of parameters and controller.
出处
《电工技术学报》
EI
CSCD
北大核心
2012年第10期228-234,共7页
Transactions of China Electrotechnical Society
关键词
发电机整流系统
阻容负载
静态稳定性
特征值法
Generator-rectifier system
capacitor-resistor load
steady-state stability
eigenvalue method
