摘要
研究光伏电池的动态参数对设计光伏发电系统相应后级控制器至关重要。从分析光伏电池物理机理出发,推导出光伏电池单体/模组/阵列的结电容与偏置电压之间的较精确表达式;在提取模型中等效串联电阻和饱和电流的值的基础上,使用Lambert W函数推导出偏置电压与输出电压之间的显式表达式;采用工程数学模型结合本征载流子浓度表达式推导了结电容与温度的较精确关系式;分别在不同串并联个数和温度下对结电容的影响做了仿真分析。仿真结果与部分文献的实验结果相吻合,验证了理论的正确性。
The study to the dynamic parameters of the photovoltaic cell is of crucial importance for the design of the corresponding afterward stage controller in the photovoltaic power generation system.Beginning with the analysis to physical mechanism of the photovoltaic cell,more accurate equivalent formulation of the junction voltage and bias voltage of the photovoltaic cells /module/array was deduced,and the explicit formulation between the bias voltage and output voltage was received by using the Lambert W function based on equivalent series resistance and the saturation current.The formulation was adopted which combined the engineering mathematics model and intrinsic carrier concentration to deduce the precise relation between the equivalent capacitance and the temperature.The simulated analysis was made to the impact of the equivalent junction capacitance respectively under different serial/parallel numbers and different temperatures.The simulated result is in accordance with the experimental result of parts of literatures,which verifies the validity of the theory.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2015年第6期1394-1400,共7页
Journal of System Simulation
关键词
光伏电池
光伏模组(阵列)
动态模型
结电容
温度
photovoltaic cells
photovoltaic module(array)
dynamic model
junction capacitance
temperature
