고집광형 PV 모듈 성능 비교 연구

Relatively higher electricity generation costs of PV due to the use of expensive PV raw materials is one of the barrier to its wide spread utilization as a clean and environmental friendly electricity source. One option to overcome this cost barrier is the use of concentrating photovoltaic(CPV) system. A CPV system with a linear Fresnel film collector has been proposed to make a focal line over PV module which can be rotated manually along two axes to track the sun and the measurement system. The experiments to analyze outdoor current and voltage on the CPV module were made on January 23, 2006 in Daejeon. As results, the electrical power output of the CPV module was 4 times higher than the PV module during the measurement duration. The power at the maximum point at the PV module was 15.3W at the 25℃. The fill factor and efficiency were 0.7 and 19.46% respectively. While the measurement temperature was 55℃ under concentration of 3.2 sun. The fill factor of the CPV module due to concentration and higher operating temperature was deteriorated as evident from the shape of the I-V curve. The efficiency and fill factor were 12.8% and 0.5 respectively. The power, current and voltage at the maximum power point concentration were 32.2W, 3.8A and 8.6V.