Design of Two-stage Soft-switched Module Inverter for Photovoltaic Applications

In this paper two stage boost photovoltaic micro inverter system using maximum power point tracking is presented. First the photovoltaic module is analyzed using SIMULINK software. The main aim of the paper is the boost converter with microinverter to be used along with a Maximum Power Point Tracking control mechanism. The MPPT is responsible for extracting the maximum possible power from the photovoltaic and feed it to the load via the boost converter which is used to steps up the voltage to required magnitude. Both the boost converter, and the solar cell are modelledusing Sim Power System blocks. Here the voltage source inverter is cascaded and it injects sinusoidal current to the grid. The dynamic stiffness are obtained when load or solar insolation changing rapidly. This paper investigates in the detail concept of Maximum PowerPoint Tracking (MPPT) which significantly increases the efficiency of the solar photovoltaic system.