【作者】 曾志； 李益国； 沈炯；

【Author】 Zeng Zhi;Li Yiguo;School of Energy and Environment,Southeast University;

【机构】 东南大学能源与环境学院；

【摘要】 为了提高光伏发电系统的效率和可靠性,需要对光伏发电系统中最大功率点进行跟踪。在分析了光伏电池的物理模型和特性的基础上,提出了滑模极值搜索控制方法。分析了该控制算法的原理,并设计了相应的控制系统。在Matlab/Simulink环境下建立动态模型进行仿真研究,实现了对光伏发电系统的最大功率点快速、准确地跟踪,提高了系统稳定性和能量转换效率,具有一定的实用价值。更多还原

【Abstract】 In order to improve the efficiency and reliability of the photovoltaic(PV) power generation systems,the PV systerms must contain a maximum power point tracking function.By analyzing the physical model and the electrical characteristic of PV cell,a extremum seeking control approach with sliding mode was proposed.The principle of this control algorithm was analyzed and the corresponding control system was designed using Matlab/Simulink.Simulation results demonstrat that the extremum seeking control with sliding mode could track the maximum power point of the PV systerms quickly and accurately,while improving the stability and efficiency of the energy conversion system.更多还原