To improve the accuracy of the PV module' s simulation model, a new multi-parameter model of photovoltaic module is presented in this paper, which is based on double-expenential equation. The proposed model accepts irradiance and temperature as variable parameters, and can exactly simulate the current-voltage characteristic ofphotovoltaic module, utilizing short-circuit current Isc and open-circuit voltage in the standard conditions of the photovoltaic module working performance. Then a program for the model is also designed. The quality factor n, series resister Rs and parallel resister Rp are concerned in this program to reflect the influence of these experimental data, and makes them optional input parameters. Furthermore, a Newton-Raphson method is used to make the calculation more accurate and faster. To satisfy the new simulation model and the program proposed in this paper, a particular typical 60W photovoltaic module is chosen for experiment. And a comparison between the experimental and simulation results has been made. The results show that the simulation curves and experimental data have excellent correspondence.%为提高太阳能电池模型的仿真精度,提出了一种新的太阳能电池多参数模型,以双曲线方程为基础,引入太阳辐射和环境温度作为可变参数,利用太阳能电池在标准条件下的短路电流I和开路电压V精确地模拟太阳能电池的输出I-V特性.仿真算法程序考虑到了品质因数n,串联电阻R和并联电阻R等初始条件对太阳能电池输出特性仿真结果的影响,并将这些能够从实验室获得的数据作为可选输入参数.此外,为实现快速和精确的运算,程序采用了牛顿-拉夫逊算法.为验证所提出的模型和算法程序,选用一块典型60W太阳能电池作为实验对象,对实验数据和仿真数据进行对比.结果证明,仿真程序能够精确地模拟太阳能电池板的输出特性曲线.
展开▼
