摘要
提出了一种新的光伏电池数学模型方程,推导出了两个重力场下的质点平抛运动轨迹方程来表达光伏电池I-V输出特性。将该模型的计算数据和真实光伏阵列实测数据进行了对比和相对误差分析,结果表明该模型能满足工程精度的要求,其计算量小,弥补了传统指数模型计算量大的缺点。根据提出模型不含指数运算且为R显函数的特点,推导出了负载工作点电流Iref与负载R的函数关系式,为光伏阵列模拟器的控制器更快地提供准确的参考值,并设计了一个光伏阵列模拟器来验证该模型和算法的正确性。用RT-LAB半实物仿真平台进行了实验,结果表明:该数字式光伏阵列模拟器能完成其模拟功能,并具有良好的动态性能。
This paper proposes a novel mathematical model equation of photovoltaic（PV） cells,and derives particle horizontal projectile motion curve equation under two gravity fields to illustrate the I-V output characteristics of PV cells.After comparing the calculation data of the model with the real measured data of PV arrays,and making the related error analyses,the paper shows the model can meet the requirements of engineering precision because the computation has been greatly reduced when compared with the traditional exponential model.Since the proposed model does not involve the index operation and contains the explicit function for R,a functional relation of the load operating point current Iref and the load R is derived to provide a more instant and accurate value for the controller of the solar array simulator,and a solar array simulator is designed to verify the correctness of the model and algorithm.An experiment with RT-LAB semi-physical simulation platform is conducted,the result of which proves the digital solar array simulator can complete its analog functions with a good dynamic performance.
出处
《华东电力》
北大核心
2011年第3期468-473,共6页
East China Electric Power
基金
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709204)~~
关键词
光伏发电
平抛运动
光伏阵列模拟器
RT-LAB
photovoltaic power generation
horizontal projectile motion
solar array simulator
RT-LAB
