Assessment of a power electronic conversion system for a self-consumption PV unit

In this paper a 700W PV conversion system, which is representative of an average residential PV installation, is assessed. The power electronic conversion system for this PV application includes a quadratic boost converter to step-up the voltage and to guarantee Maximum Power Point Tracking (MPPT), optimizing the energy production. The DC/AC conversion is performed by a full-bridge single phase inverter using Sinusoidal Pulse Width Modulation (SPWM). A current controller and a voltage controller are designed to guarantee the desired voltage level in the DC link and current waveform in the connection to the grid. Simulation results are obtained and analyzed for different irradiance conditions, and show the proper response of the MPPT system and the output power injected to the grid.