Experimental Study of the Characteristic of Concentrating Silicon Solar Cell Arrays on Trough Concentration System

The performance tests of two types of domestic concentrating silicon cell arrays with parallel and inverted square grid-line distribution have been carried out on trough concentrating photovoltaic/thermal system respectively. Experimental results indicated that photoelectric efficiency of the two selected concentrating silicon cell arrays reached 11.42% and 13.89%, also the maximum power amplified 16.1 times and 19.3 times respectively with real concentrating ratio 20 times. The temperature coefficients of Pm, FF, and η of cell arrays were -0.047W/K,-0.45%/K,-0.035%/K and -0.029W/K,-0.176%/K, -0.105%/K separately. All those works are benefits for choosing solar cells and cosmically utilizing trough concentration PV system.