Design and implementation of a new solar photovoltaic based converter inverter topology for micro inverter applications

Abstract

The predictable reduction of fossil fuels combined with the harmful environmental effects directed to search for clean and inexhaustible alternate energy sources Renewable energy sources such as solar and wind are the most excellent alternative energy sources The solar Photo Voltaic PV modules have become famous due to its recent advances in manufacturing that cut the material cost and advances energy harvesting Also the power generated by the PV panel is the example of harnessing solar energy as it is pollution free clean and flexible Since the PV source is a low voltage dc source it requires the power conversion stage in order to interface with the present electrical utilities In large solar power systems there are many panels connected in series parallel combination to achieve the high level dc voltage that can connect to the centralized inverter If one PV module is subjected to low solar irradiation or low cell temperature during a change in environmental conditions then the output power of the whole system will reduce considerably The series connected solar PV panels results in reducing the output current and hence the power output of the system due to change in operating conditions Moreover the central level Maximum Power Point Tracking MPPT algorithm allows the system to track the local Maximum Power Point MPP instead of true MPP newline