Novel Degradation Diagnosis Algorithm for Solar Cell Modules by Taking into Account Electrical Characteristics and Ambient Factors

The Korean national policies have enforced to spread the RES (renewable energy sources) as one of the alternative solutions to solve the environmental pollution problems caused by global climate change.Under these circumstances, installations of solar cell systems are considered due to the global concern in eco-friendly and renewable solar energy sources.Nevertheless, electrical performance results and lifetime of solar cell modules installed outside of the buildings have been gradually reduced due to the varied outer ambient circumstances such as temperature, humidity, ultra-violet rays that may cause the reduction of solar cell modules efficiency.Therefore, to solve these issues, this study aims to present a diagnosis algorithm and also perform a diagnosis algorithm to reduce a condition of solar cell modules by taking into account ambient factors and the electrical performance which is energetically related to annual degradation of solar cell modules.Furthermore, this study focused on the implementation of the diagnosis system of solar cell modules with the proposed evaluation algorithm.In addition, the results show that the proposed evaluation and diagnosis system of solar cell modules are practical and useful tools for the improvement of operational efficiency in the solar cell system.