串并联太阳能电池弧形光伏组件的发电性能研究

将弧形光伏组件安装在建筑和汽车上获取电能,已受到人们越来越多的关注。为获得更高的输出功率,有必要研究由互连太阳能电池组成的、电流不匹配的弧形光伏组件的特性。研究重点关注由串并联太阳能电池组成的弧形光伏组件的发电性能,设计了不同曲率的非平面微型光伏模块,并通过测量获取光伏模块的参数。与平面光伏模块相比,弧形光伏模块的发电量较小。此外,利用二极管模型分析了光伏模块的特性,说明并联比串联功率高的原因。最后研究了实际应用中太阳能电池的互连问题。结果表明,在理想模型下并联能获取更多电能,但大尺寸的光伏模块会产生更大电流,可能会在实际运行中产生额外损耗。因此,在实际应用中设计弧形光伏组件时也应考虑太阳能电池的互连。

Power Generation Performance of Curved Photovoltaic Module with Series-Parallel Connected Solar Cells

Curved photovoltaic (PV) have gained attention for use in well-designed building and vehicle integration. To achieve higher output power, it is necessary to elucidate the characteristics of curved PV modules composed of many connected solar cells with current mismatching. In this study, the power generation of curved PV modules of solar cells connected in series and parallel to the curved surface was investigated. Nonplanar mini-modules with different curvature were fabricated, and the PV module properties were extracted from the current-voltage measurements. The power generation in the curved modules decreased with respect to the reference flat module, which depended on the interconnections of the solar cells. Next, the PV properties were analyzed by using a diode model, which could explain the higher power of the parallel interconnection compared with the series interconnection. Finally, the selection of solar cell interconnections for practical applications was examined. It was determined that the parallel interconnection can obtain higher power in an ideal model. However, it caused higher current for large-sized modules, which may cause additional resistivity losses in practical modules. The findings indicated that solar cell interconnections should be considered when a practical curved PV module was designed.