Hot spots, MPPT technology and the differential power processing (DPP) for wearable PV applications

Abstract

The PV cell connected in series experience several addressable problems which reduce the efficiency of power output in the solar system. Some of the serious issues are mismatching, shading issues, generation of ‘hot spot’, dust, and obstacles over the panel, solar charge controller design. This problem of overall decreased output power could be improved by introducing the converter design technique of differential power processing. DPP architecture achieves high system efficiency by processing the fraction of total power. This report is mainly focused on the home rooftop solar panel requirements, irradiance obstacles on the solar panel, factors affecting the efficiency of the solar panel system, and converter design for wearable PV application. PV cells can be used for wearable PV applications where fluctuation in illumination is observed. With the help of DPP technique, the MPPT for each cell is traced and the cell operates around that point. The DPP converter design is controlled with the help of the DC-DC controller design which is discussed in the report.