摘要
在光伏发电系统中,针对传统的最大功率点跟踪控制方法难以同时满足追踪精度与追踪速度的问题,提出了一种新的改进P&O和MPC相结合的光伏MPPT控制方法,先将扰动之后的电压和电流作为参数输入MPC控制器,再由控制器的两步长函数分析预测出未来变量的动作并生成输出曲线。仿真结果表明,相较于传统的扰动观察法,该算法可以同时满足追踪精度与追踪速度的要求。
In the photovoltaic power generation system, the traditional maximum power point tracking control method is difficult to satisfy both tracking accuracy and tracking speed. A new improved P&O method combining MPC algorithm was proposed to control MPPT. First, the voltage and the current after the disturbance as parameters were inputted to the MPC controller, and then the two-step function of the controller could predict the action of future variables and generate the output curve. The simulation results show that the algorithm can meet the requirements of both tracking precision and tracking speed comparing with the traditional disturbance observation method.
作者
李恒杰
李治廷
陈伟
曾贤强
LI Heng-jie;LI Zhi-ting;CHEN Wei;ZENG Xian-qiang(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China;Key Laboratory of Advanced Industrial Process Control in Gansu Province,Lanzhou Gansu 730050,China;Electrical and Control Engineering National Experimental Teaching Demonstration Center,Lanzhou University of Technology,Lanzhou Gansu 730050,China)
出处
《电源技术》
CAS
北大核心
2019年第11期1843-1846,共4页
Chinese Journal of Power Sources
关键词
光伏发电系统
最大功率点跟踪
扰动观察法
模型预测法
photovoltaic power generation system
maximum power point tracking
perturbation observation
model prediction method
