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基于最小势能原理导出光伏组件晶体硅电池片位移场及应力场的级数解,并对面板尺寸为1580 mm×808 mm的195W单晶硅标准组件在风荷载作用下晶体硅电池片的应力进行计算和分析,考虑不同风压及EVA胶膜的厚度和剪切模量变化时对应力的影响。结果表明:最大应力发生在电池片的中点,电池片的应力随EVA胶膜剪切模量的增加而呈非线性增大,随EVA胶膜厚度的增加而呈非线性减小。
Based on the principle of minimum potential energy, the series solutions of the displacement field and the stress field of PV modules were deduced. The stress of the crystalline silicon cells under the wind load was evaluated for the standard components of 195W monocrystalline silicon with the panel size of 1580 mm × 808 mm Calculation and analysis, consider the different wind pressure and EVA film thickness and shear modulus changes in the impact of stress. The results show that the maximum stress occurs at the midpoint of the cell sheet. The stress of the cell sheet increases nonlinearly with the increase of the shear modulus of EVA film, and decreases non-linearly with the increase of EVA film thickness.