Abstract
Shingled photovoltaic (PV) modules with increased output have attracted growing interest compared to conventional PV modules. However, the area per unit solar cell of shingled PV modules is smaller because these modules are manufactured by dividing and bonding solar cells, which means that shingled PV modules can easily have inferior shading characteristics. Therefore, analysis of the extent to which the shadow affects the output loss is essential, and the circuit needs to be designed accordingly. In this study, the loss resulting from the shading of the shingled string used to manufacture the shingled module was analyzed using simulation. A divided cell was modeled using a double-diode model, and a shingled string was formed by connecting the cell in series. The shading pattern was simulated according to the shading ratio of the vertical and horizontal patterns, and in the case of the shingled string, greater losses occurred in the vertical direction than the horizontal direction. In addition, it was modularized and compared with a conventional PV module and a shingled PV module. The results confirmed that the shingled PV module delivered higher shading output than the conventional PV module in less shade, and the result of the shading characteristic simulation of the shingled PV module was confirmed to be accurate within an error of 1%.
Highlights
Global warming has caused the intensity and frequency of heat waves, droughts, and typhoons to intensify worldwide [1]
The shading pattern applied to the shingled PV module was measured by extending the shading in a horizontal direction in the same way as using the shingled string andsimulator compared with the simulation
These results show that the maximum error rate of the measured characteristics of the shingled PV module and the power ratio value was approximately 0.65, and the output decreased with a similar trend
Summary
Global warming has caused the intensity and frequency of heat waves, droughts, and typhoons to intensify worldwide [1]. The solar generation market requires high-efficiency modules to generate power in a limited space. PV modules are manufactured by connecting 6-inch solar cells with metal ribbons, and because this type of system requires space for installing insulation between solar cells, these modules experience spatial output loss [6,7]. The space required for insulation between solar cells is reduced, potentially making them more efficient than conventional. For insulation between solar cells is reduced, potentially making them more efficient than conventional PV modules [10]. It is necessary according to the shading type and design the module structure such that the shading loss to analyze the output loss of a shingled PV module with high accuracy according to the is minimized. PV module, shading the shading characteristics in the shingled string were analyzed analysis.
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