Single Phase Grid Connected Inverter for Photovoltaic with MPPT Strategy

摘要

#$%^&*AU2019101156A420191031.pdf#####ABSTRACT The invention belongs to the field of renewable energy source and power electronics. It is a Single Phase Grid Connected Inverter for Photovoltaic. The invention consists of the following steps: firstly, a MPPT modular with particular algorithm is used for finding the maximal power point of PV panels. Secondly, a DC-DC Boost Converter converts PV output power into a 400V DC power. Thirdly, a SPWM Inverter is used to shape it into an AC power which is the same sinusoidal wave as grid current (220V 50Hz). In brief, the present invention can stabilize the output voltage of the photovoltaic power generation system at a given value to meet the power supply requirements. 1S Start PV panel DC-DC Converter DC flow S14 Converter I Filter AC Power 4 Power Grid End Figure P VP PF DC-DC L Converter Inverter -- y) PWM1PWM5 MD,D2 Wt t i * V Figure2 1