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Photovoltaic output parameters of a mono-crystalline silicon solar cell with non-uniform horizontal temperature distributions
Temperature inhomogeneity occurs frequently in the application of photovoltaic devices. In the present study, the effect of nonuniform horizontal temperature distributions on the photovoltaic output parameters of a monocrystalline silicon solar cell including short-circuit current, open-circuit voltage, output power, etc. was investigated. A laser beam irradiated on the center of the cell surface was used to obtain nonuniform temperature distributions. The results show that the higher initial temperature region of the solar cell absorbs more heat energy and achieves higher temperature than the lower initial temperature region after exposure to the same sunlight. Meanwhile, the photovoltaic parameters vary with the temperature difference between the center and edge of the solar cell. The maximum output power decreases exponentially with the temperature difference. The output power under an external load resistance of 1 Ω is almost inversely proportional to the temperature difference. According to the experimental results, when the temperature difference between the center and edge of the solar cell changes from 0 K to 60 K, the open-circuit voltage, maximum output power, output current, and power under external load resistance of 1 Ω would decrease by 4.8%, 4.8%, 5.1%, and 9.8%, respectively. The photovoltaic efficiency decreases when the temperature distribution is nonuniform.
Photovoltaic output parameters of a mono-crystalline silicon solar cell with non-uniform horizontal temperature distributions
Temperature inhomogeneity occurs frequently in the application of photovoltaic devices. In the present study, the effect of nonuniform horizontal temperature distributions on the photovoltaic output parameters of a monocrystalline silicon solar cell including short-circuit current, open-circuit voltage, output power, etc. was investigated. A laser beam irradiated on the center of the cell surface was used to obtain nonuniform temperature distributions. The results show that the higher initial temperature region of the solar cell absorbs more heat energy and achieves higher temperature than the lower initial temperature region after exposure to the same sunlight. Meanwhile, the photovoltaic parameters vary with the temperature difference between the center and edge of the solar cell. The maximum output power decreases exponentially with the temperature difference. The output power under an external load resistance of 1 Ω is almost inversely proportional to the temperature difference. According to the experimental results, when the temperature difference between the center and edge of the solar cell changes from 0 K to 60 K, the open-circuit voltage, maximum output power, output current, and power under external load resistance of 1 Ω would decrease by 4.8%, 4.8%, 5.1%, and 9.8%, respectively. The photovoltaic efficiency decreases when the temperature distribution is nonuniform.
Photovoltaic output parameters of a mono-crystalline silicon solar cell with non-uniform horizontal temperature distributions
Zhai, Han (Autor:in) / Zhang, Jia (Autor:in) / Wu, Zihua (Autor:in) / Li, Qiang (Autor:in) / Xie, Huaqing (Autor:in)
01.09.2019
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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