Photovoltaic module temperature real-time calculation method based on Lambert W function
A photovoltaic module and function technology, applied in the field of real-time calculation of photovoltaic module temperature, to achieve the effect of saving device costs and improving large errors
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[0036] In this embodiment, a real-time calculation method for the temperature of a photovoltaic module based on the Lambert W function, such as figure 1 shown, including the following steps:
[0037] 1) According to the physical model equation of the photovoltaic module I-V characteristic equation shown in formula (1), the engineering I-V characteristic equation shown in formula (2) is derived:
[0038]
[0039] In formula (1): I ph is the photogenerated current, I 0 is the reverse saturation current, q is the electronic charge (1.6×10 19 C), K is the Boltzmann constant, T is the absolute temperature, A is the diode factor, R sh For parallel resistors, the five parameters I ph , I 0 , R s , R sh , A are not only related to temperature and irradiance, but also difficult to determine, so it is difficult to apply in engineering. To this end, a photovoltaic module model for engineering is proposed. Reasonable simplification based on the physical model equation can repro...
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