研究目的
To evaluate the performance of PV modules under different climate conditions by introducing a thermal-electrical model that calculates the electrical parameters and temperature of the PV module after reaching steady-state condition.
研究成果
The thermal-electrical model effectively estimates PV module performance under various climate conditions, with simulation and experimental results showing good agreement. The model's ability to consider heat sources in different materials and detailed layer analysis enhances accuracy. Future studies could explore dynamic conditions and local temperature variations.
研究不足
The model assumes steady-state conditions and homogeneous temperature on the module surface, neglecting local variations. Accurate measurement of module temperature requires inserting thermal sensors inside the stack, which can introduce noise and defects.
1：Experimental Design and Method Selection:
The study employs a thermal-electrical model based on a previously developed optical-electrical model to evaluate PV module performance under various climate conditions. The model considers heat sources in different materials and divides layers into several sub-layers for detailed analysis.
2：Sample Selection and Data Sources:
A mini-module with a two-busbar solar cell, glass, EVA, and backsheet is used for validation. Electrical and thermal properties of the module components are based on measurements and simulations.
3：List of Experimental Equipment and Materials:
The study uses a sun simulator with a Xenon lamp for testing, and the module is placed over four stands to avoid direct contact with the measurement table.
4：Experimental Procedures and Operational Workflow:
The mini-module is exposed to 1000 W/m2 irradiation for about 15 min, with electrical characteristics measured every 30 s. The module's inactive area is covered with a black mask to reduce noise.
5：Data Analysis Methods:
The study compares simulation and experimental results, with deviations around 1% indicating good agreement. An exponential fit estimates the time to reach steady-state condition.
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