摘要
本文基于光伏电池数学模型,建立了光伏电池仿真模型。该模型能准确反映光伏电池的输出特性,而且参数调节方便。在不同的串联电阻和日照强度变化条件下,对光伏电池输出特性理论分析的基础上,建立实现最大功率跟踪(MPPT)的控制模型,仿真结果证明光伏电池的输出特性呈非线性,并随串联电阻和日照强度的变化而变化。为克服光伏电池输出功率随外部环境或内部参数的变化,采用逐步逼近法和BOOST变换电路实现对光伏电池输出的最大功率跟踪。
Based on the mathematical model of photovoltaic cells,the simulating model of PV cells is built in this paper.The model can reflect the output characteristics of the PV cells exactly and the most parameters can be adjusted conveniently.In different series resistance and sunshine intensity changing conditions,as well as on the basis of theoretical analysis of output characteristics of the PV cells,the control model for maximum power point tracking（MPPT） is established.The simulation results show that the output characteristics of PV cells are nonlinear and are changed with the series resistance and sunshine intensity.In order to overcome the variation of output power of the PV cells with external conditions or internal parameters,the maximum power point tracking of the PV cells is realized by using gradual approximation method and boost DC/DC converter.
出处
《电子技术（上海）》
2011年第9期87-88,83,共3页
Electronic Technology
基金
淮安市科技支撑计划(工业)
项目编号HAG2010026
