摘要
通过对光伏组件平面辐照量、电学特性的模拟计算,对在珠海地区采用单、双轴跟踪和固定倾角(朝南22°)布置时,太阳电池组件的太阳辐照量和产出电能情况进行比较、分析;同时对光伏系统在不同负载下,跟踪的意义进行了研究、讨论,发现其跟踪方式对并网系统产出电能有较大提高:双轴和单轴跟踪分别增加23.9%和18.2%;对光伏水泵等负载效果也非常明显,能很大地提高产能降低成本.但在珠海地区对全年均衡型和冬季型负载采用跟踪时效果不够显著.
The hourly output performance of photovoltaic （PV） modules was determined by mathematic models for PV module, and models for estimating the hourly irradiation on the module plane of single axis, double axes tracking and stationary （southern tilted 22°） modes at Zhuhai. PV module output performances of different modes were compared and analyzed, and the tracking effect for different load applications was discussed and investigated. It is found that for grid connected PV systems, tracking can enhance solar electric power by 23.9% and 18. 2% with double axes and single axis respectively; for the summer type load, such as PV-powered pumps, the effect of the tracking fashion can be so significant that it can enhance output greatly and decrease the cost of the PV system. However, for the winter type load andbalanced load, the effect of the tracking fashion would be not very obvious.
基金
国家"十五"攻关项目(2004BA411A09)资助
