摘要
针对同步逆变器中传统下垂算法的不足,应用一种改进下垂算法对同步逆变器并联运行进行控制。在Matlab/Simulink中搭建同步逆变器并联运行模型,将改进下垂算法与同步发电机模型结合,控制两台三相同步逆变器并联运行,并对其进行仿真研究和实验验证。仿真和实验结果表明,该改进下垂算法在同步逆变器控制中具有实用性,可以与同步发电机模型很好地结合,控制并联同步逆变器较好地完成电流和功率均分,并且还能提高系统的稳定性能和动态性能,使同步逆变器类似于同步发电机的特性更加显著。
Abstract. In allusion to the shortcomings of traditional droop algorithm in synchronous inverter, an improved droop algorithm is applied to control synchronous inverters running in parallel. A model of synchronous inverters running in parallel is built in MATLAB/Simulink. The improved droop algorithm is combined with the model of synchronous generator to control two three-phase synchronous inverters running in parallel. Some simulations and experiments have been done on inverters parallel running system. The results of simulations and experiments show that the improved droop algorithm has good practicability in synchronous inverter control, can combine well with synchronous generator model to control parallel synchronous inverters to accomplish current and power sharing well, and can still improve the stability and dynamic performance of system, thus make the characteristics of synchronous inverter be more similar to that of synchronous generators.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第14期103-108,共6页
Power System Protection and Control
基金
山东省自然科学基金资助项目(Y2008G14)
关键词
下垂算法
逆变器
并联
同步发电机
仿真
droop algorithm
inverter
parallel
synchronous generator
simulation
