摘要
为保证光伏系统高效稳定运行,对光伏发电最大功率点跟踪Boost变换器的动力学特性进行了研究。首先基于光伏电池等效模型及阻抗匹配原则确定系统结构。然后推导了系统的数学模型,通过数值仿真研究系统的非线性行为,并根据系统状态平均方程的雅可比矩阵特征值进行理论分析,确定了系统的输入参数R_(eq)和E、控制参数K_(p)、滤波参数C_(f)的稳定域以及E-R_(eq)构成的二维参数平面上的稳定性边界。最后通过Matlab/Simulink仿真验证理论分析的正确性。结果表明:研究光伏发电最大功率点跟踪Boost变换器的动力学特性,可确定其稳定工作域,为实际工程的设计及调试提供理论依据。
To ensure the efficient and stable operation of photovoltaic(PV)system,the dynamics characteristics of a Boost converter in PV maximum power point tracking(MPPT)were studied.First,the system structure was determined based on the equivalent model of PV cell and the impedance matching principle.Then,a mathematical model of the system was deduced,and its nonlinear behavior was studied through numerical simulations.In addition,according to the eigenvalues of Jacobian matrix for the system state average equation,theoretical analysis was performed,and the stability range of input parameters R_(eq) and E,control parameter K_(p),and filtering parameter C_(f) and the stability boundary on the two-dimensional parameter plane composed of E and R_(eq) were determined.Finally,the theoretical analysis was verified by simulations using Matlab/Simulink.Results show that the research on the dynamics characteristics of the Boost converter in PV MPPT can determine its stable working range and provide a theoretical basis for the design and commissioning of practical projects.
作者
陶慧
赵世彬
贾春华
TAO Hui;ZHAO Shibin;JIA Chunhua(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2022年第5期26-34,共9页
Proceedings of the CSU-EPSA
关键词
光伏发电
最大功率点跟踪
BOOST变换器
稳定性分析
photovoltaic power generation
maximum power point tracking(MPPT)
Boost converter
stability analysis
