Lifetime evaluation and degradation modeling of thin-film solar cell module in operation

研究了非晶硅太阳电池在运行过程中的退化机理，提出了评价太阳电池组件性能的指标。安装了精密太阳光功率计、温湿度传感器和长期观测数据记录器，并开始监测辐射到组件的太阳能功率。太阳能功率是评价组件效率的重要参数，第二年，使用空调和恒定电阻作为组件的负载，对组件的输出特性进行了监测。定期采集短路、开路和负载电路的电压和电流输出数据。对数据的分析是在个人计算机的工作表上进行的。实践证明，该评价系统可用于长期监测运行中的组件特性。

Degradation mechanism of amorphous silicon solar cells is investigated during its operation, and a guideline for evaluation of the solar cell modules is proposed.In the first year, the system for measurement of the output characteristics of the modules was designed. The precise sunlight power meter, temperature and humidity sensor, and data logger for long term observation were installed, and monitoring of the solar power radiated to the modules was started. The solar power is an important parameter for evaluation of the efficiency of the modules.In the second year, the output characteristics of the module were monitored by using an air conditioner and a constant resistance as a load for the modules. The data of the voltage and current outputs for short, open, and loaded circuits were acquired periodically. The analysis of the data was performed on work sheets on a personal computer. It has been demonstrated that the evaluation system is useful for the long period monitoring of the characteristics of the modules in operation.