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A method for thermoelectric coupling analysis of double-glass photovoltaic modules

A dual-glass photovoltaic and thermoelectric coupling technology, applied in electrical digital data processing, instruments, design optimization/simulation, etc., can solve problems such as the inability to meet the analysis requirements of double-glass photovoltaic modules, and achieve the effect of filling the gap.

Active Publication Date: 2019-06-25
HOHAI UNIV CHANGZHOU
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Problems solved by technology

Therefore, the existing methods cannot well meet the analysis requirements of double-glass photovoltaic modules

Method used

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  • A method for thermoelectric coupling analysis of double-glass photovoltaic modules
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  • A method for thermoelectric coupling analysis of double-glass photovoltaic modules

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Embodiment 1

[0130] The data used in this example was collected by the double-glass photovoltaic module testing platform of Hohai University. The experimental platform is equipped with a small weather station, which can measure environmental parameters such as ambient temperature, humidity, horizontal radiation, slope radiation, wind speed and direction, and the sampling rate is once a minute. Use the measured data on July 29, 2015 to compare with the simulation results. image 3 are the irradiance and wind speed, Figure 4 and Figure 6 The temperature and power comparison charts of the simulation data and the measured data are respectively, Figure 5 and Figure 7 The temperature and power error distribution diagrams of the simulated data and the measured data are respectively.

[0131] Through the comparison and analysis of the temperature simulation and the actual measurement on July 29, the change trend of the simulated temperature is consistent with the measured temperature on th...

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Abstract

The invention discloses a method for thermoelectric coupling analysis of a double-glass photovoltaic module. Firstly, a simplified engineering mathematic model of the photovoltaic module is obtained according to physical models such as a single diode of a photovoltaic battery, and a simulation model of the photovoltaic module is established. Secondly, a heat exchange manner of the double-glass photovoltaic module is analyzed according to structure characteristics, physical characteristics and optical characteristics of the double-glass photovoltaic module; according to an energy balance equation, a relation equation of temperature, power, convection and thermal radiation of the module is established; and a temperature physical equation of the module is obtained. Finally, a thermoelectric coupling simulation model is established in combination with the engineering mathematic model and the temperature physical equation of the module, so that the thermoelectric coupling analysis of performance of the double-glass photovoltaic module can be achieved. The method disclosed by the invention makes up deficiency of existing models in consideration of temperature influences generated during performance research of the double-glass module, effectively makes up vacancy in the field, facilitates the performance research of the double-glass photovoltaic assembly and also facilitates further marketization of the double-glass photovoltaic module.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a thermocouple analysis method for a double-glass photovoltaic module. Background technique [0002] With the rapid development of photovoltaic technology, module products that meet various actual needs and environmental requirements are constantly coming out. Double-glass photovoltaic modules adopt a double-sided glass symmetrical structure, which has great advantages over ordinary modules in terms of anti-crack, fire prevention and anti-PID attenuation, and has increasingly become the focus of module manufacturers and users. [0003] In the case of constant ambient irradiation conditions, temperature changes will cause changes in module output power. For general silicon cells, the open circuit voltage V OC decrease by about 0.37%, while the short-circuit current I SC Add about 0.05%. An increase in battery temperature will cause the maximum power point of the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 丁坤刘振飞覃思宇高列茅静王越丁汉祥
Owner HOHAI UNIV CHANGZHOU
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