摘要
光伏发电系统的核心是三相电压型逆变器,通过对两相同步旋转坐标系下的数学模型的研究分析,提出了电压电流的双环控制方法,综合分析d-q坐标下电流电压的耦合和解耦关系,精确选择PI调节器系统参数,提高系统的动态及快速跟随能力,利用Matlab搭建光伏发电系统模型并进行仿真验证。采用电压电流双闭环逆变器控制模型,在多种运行方式下,光伏发电系统均能输出三相平衡电压。
The core components of photovoltaic power generation system is three-phase voltage inverter,under the research and analysis of the mathematical model in two-phase synchronous rotating coordinate system,The double-loop control strategy based on voltage current is adopted.Comprehensive analysis the coupling and decoupling of current and voltage under the d-q coordinates,By precisely choosing the PI regulator system parameters,in order to improve the system’s dynamic and rapid follow-up capabilities,Using the Matlab to build a photovoltaic system model and simulation.The double closed-loop inverter control model of voltage and current,Photovoltaic power generation system can output three-phase equilibrium voltage in a variety of operating modes.
作者
庄岩
徐伟明
李树卿
袁敏
金祝飞
ZHUANG Yan;XU Wei-ming;LI Shu-qing;YUAN Min;JIN Zhu-fei(Jiaxing State Grid Power Company, Jiaxing 314000, China)
出处
《电气开关》
2019年第4期55-57,63,共4页
Electric Switchgear
关键词
光伏发电
电压电流双环
PI调节器
解耦
耦合
the photovoltaic generation
the voltage and current double loop
the controller of PI
decoupling
coupling
