文献类型： 会议论文

第一作者： Zouhaira Ben Mahmoud

作者： Zouhaira Ben Mahmoud ¹ ; Mahmoud Hamouda ¹ ; Adel Khedher ¹ ;

作者机构： 1.Universite de Sousse, ENISO, SAGE

关键词： PV array;Parameter variations;Series resistance;Shunt resistance;Temperature variation;Maximum Power Point Tracking (MPPT)

会议名称： International Conference on Electrical Sciences and Technologies in Maghreb

主办单位：

页码： 77-83

摘要： The photovoltaic (PV) array performance is significantly affected by solar irradiation, temperature and its configuration. Indeed, the array configuration has an impact to modify the series (Rs) and the shunt (Rsh) resistances that appear in its mathematical model. Moreover these resistances are dependent on temperature variation. Hence, the latter can affect I-V and P-V characteristics by modifying the Rs and Rsh resistances. Consequently, the maximum power point (MPP) can be shifted and thus the efficiency and reliability of the entire PV system can be affected. This paper is based on modeling and simulation of the I-V and P-V characteristics of a PV array under non uniform temperature that influences the series and shunt resistances. Simulation results show that, compared to the case when temperature variation do not affect the R_s and R_(sh) resistances, temperature variation effect is always dominated and the resistances effects are more visible for high temperature value. However the comparison R_s and R_(sh) effects shows that the Rs variation effect versus temperature variation is more significant. The proposed PV array study can be used in PV system design and it permits to evaluate its performance not only under standard conditions but also under resistances variations. Indeed, it is very important to predict the PV array behavior to an effective use of a PV system under all conditions.

分类号： TP3-53