Estimation method of the energy loss caused by irradiance and incident angle - the estimation method by utilizing irradiance generated power characteristic

摘要

The authors are studying the diagnostic method of a PV system. The influence of the solar irradiance and the incident angle of direct and diffuse solar irradiance on power generation efficiency of the PV module is estimated by irradiance-generated power characteristic. In this paper, it tried separate the influence of those loss factors on generated power. From these results, it is suggested that the energy loss can be estimated by shape of irradiance-generated power characteristic.