| Summary: | 碩士 === 國立屏東科技大學 === 車輛工程系所 === 101 === In this study, the HCPV cell operating temperature direct measurement method is proposed, and its electrical parameters including open circuit voltage (Voc), short circuit current (Isc), output power (Pm) and fill factor (FF) under different irradiances and operating temperatures are investigated. In the ambient temperature 25℃ and 500, 600, 700, 800 W/m2 solar irradiance conditions, experimental results show the solar cell temperatures were 39.8℃, 41.1℃, 49.9℃ and 54.1 ℃, and the aluminum plate temperatures were 35.1℃ , 36℃, 41.3℃ and 44.2℃. The temperature difference between the backplane and the solar cell are 4.6℃, 6.02℃, 8.5℃ and 9.9℃. The corresponding conversion efficiency percentages were 14.1%, 14.2%, 14.6%, 14.4% in the ambient temperature 30℃.
The relationships of the irradiance and electrical parameters were measured by the controlled solar simulator. The output power increased to about 0.3~0.5W when the irradiance increased by 100 W/m2. Moreover, open-circuit voltage (Voc), short circuit current (Isc), maximum power (Wmpp) and fill factor (FF) electrical parameters varied with the HCPV cell’s operating temperature. The open circuit voltage (Voc) decreased 0.03~0.04% / ℃, and the fill factor (FF) decreased by about 0.08~0.09% / ℃. In contrast, the short-circuit current (Isc) increased about 0.1%~0.14/ ℃. The electrical parameters of the temperature coefficients of photovoltaic module are: open-circuit voltage (Voc) －0.0048 V / ℃ ~ －0.004 V / ℃, short circuit current (Isc) 0.00084 A / ℃ ~ 0.00016 A / ℃, maximum output power (Pm) －0.003 W / ℃ ~ －0.004 W / ℃, conversion efficiency (η) －0.035% / ℃ ~ －0.027% / V and fill factor (FF) －0.085% / ℃ ~ －0.072% / ℃.
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