Control Technique for Single Phase Inverter Connected to the Grid
Linda Hassaine& Mohamed Rida Bengourina
Centre de Développement des Energies Renouvelables, Bouzareah, Algeria

In photovoltaic system connected to the grid, the main goal is to control the power that the inverter injects into the grid from the energy provided by the photovoltaic generator. In this paper is proposed, a control technique for a photovoltaic system connected to the grid based on the digital pulse-width modulation (DSPWM) which can synchronise a sinusoidal current output with a grid voltage and control a power factor.  This control is based on the inverter controlled by bipolar PWM Switching. The electrical scheme of the system is presented. The approach is widely explained. Simulations results of output voltage and current validate the impact of this method to determinate the appropriate control of the system.  A digital design of a generator PWM using VHDL is proposed and implemented on an Xilinx FPGA.

Area: Sub-Area 10.1: Power Converter Design and Control