| Summary: | 碩士 === 國立屏東科技大學 === 車輛工程系所 === 100 === This work has collected the module temperature and power associated to a high-concentration photovoltaic (HCPV) module. Also, the ambient climate conditions, including the ambient temperature, the direct normal irradiance (DNI), the wind speed, the wind direction, and the ambient humidity, have been collected. It was found that the DNI is the most greatest in February and August but the weakest in March and April. The values of DNI fluctuated more vigorously in the afternoon. This phenomenon is related to the place where the HCPV is located. The HCPV module temperature is the highest about 70°C in the summer but about 50°C in the winter. Present measurement show the module temperature is proportionally related to the ambient temperature and the DNI value but inversely proportional to the humidity. In this thesis, empirical correlations were proposed to predict the module temperature and the module power. The wind direction was decomposed according to the instantaneous orientation of the HCPV module and thus wind direction factors were introduced. The use of these wind direction factors was found to improve the prediction of the correlations. Although using wind direction factors could be more complicated, the prediction of module temperature for the HCPV module yielded an R2 value of 0.752, which is about 0.022 greater than that used the overall wind direction factor. Among the four correlations to predict the power of the HCPV, the best correlation yielded an R2 value of 0.953. The HCPV module investigated in this work had been installed outdoor and exposed to the sun for more than two years. Its power efficiency was about 20%. To examine its aging effect, it was compared to a control unit. Bothe these experimental and control units were connected to a relay so that their individual module power could be recorded almost simultaneously. A parameter called effectiveness was defined as the ratio of the power generation of the experiment module to the control unit. It was found that the effectiveness was about 80%~90%.
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