The Study of The Performance and Efficiency in a Solar Photovoltaic System Under Partial Shading
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Abstract
This research aims to study the efficiency of solar power generation under Partial Shading Condition (PSC).
The study compares power generation performance under light intensities ranging from 200 to 1000 W/m² using 300-watt solar cells arranged in an 8×6 configuration, connected in a Total Cross Tied (T-C-T) scheme. A total of 26 shading patterns were tested, categorized into four groups based on the number of shaded photovoltaic (PV) modules, ranging from 3 to 6 modules. These shading patterns included both single-row shading and dispersed shading across multiple strings. The MATLAB/Simulink program was used to analyze power generation, voltage, current, and efficiency. The test results showed that the distribution of shaded modules significantly affects system efficiency. Systems with multiple shaded modules within the same string exhibited higher efficiency than systems where the shaded modules were dispersed across multiple strings, even when the total number of shaded modules was the same. For example, shading pattern 16, where 6 modules were shaded within a single string, achieved an efficiency range of 87.55–97.02%. In contrast, shading pattern 26, where 6 shaded modules were distributed across different strings (one module per string), exhibited an efficiency range of 80.88–95.56%. Therefore, it can be concluded that, in addition to light intensity, the shading configuration also significantly affects the efficiency of electricity generation.
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