Mounting hole 위치 변화를 통한 모듈의 기계하중성능 개선

The purpose of frames for PV(PhotoVoltaic) modules is to fix a PV module on lattice girders and to protect the module performance from the mechanical loads such as wind and snow. To improve mechanical performance of the PV modules, the frame has to be considered not only increasing frame rigidity but also reasonable price and performance. Factors which influenced this performance are shape of the frame, structures of cross section, fixing method, adhesive property, type of solar cell, mounting hole position and etc. Structure variation of the PV module by applying the mechanical load on the module is occurred at two parts of the module. One is the glass part laminated with EVA, Back sheet and solar cells, another is the frame part influenced by glass. Each behavior is closely related with PV modules's mechanical performance. In this paper, the PV module's deformation and mechanical performance were analyzed by changing the mounting hole position in theoretically. The appropriate mounting hole position of the samples with specific mechanical load, 5400Pa, was simulated. MLT(Mechanical Load Test) of the frame samples with the mounting hole position via the result of the simulation was performed. Simulation and experimental results were well matched.