Effects of Sunlight-Incident Angle and Cell Temperature on Output in Solar Concentrator System

The power of a solar cell system with concentrator is affected by the number of suns, sunlight-incident angle, and the temperature of the solar cell. In this paper the effects of sunlight-incident angle and the cell temperature on a solar concentrator system output are investigated. Here we introduce a simplified equivalent circuit model for a solar cell. In the investigation, the output current and voltage in the solar concentrator system are derived in consideration with sunlight-incident angle on solar panel. In addition, the effect of the cell temperature on a solar concentrator output power is also studied. Computer simulation results for the current-voltage and electric power of the solar concentrator system are shown in reference with conventional solar cell system. The results show that the electric output power in the concentrator system are affected by the cosine value of sunlight-incident angle and that the high temperature of the cell degrades the electric output power.