Renewable energy sources based power converter with voltage and load angle control

Abstract

This paper presents an integrated solution for the interconnection of photovoltaic cells with the main grid. Solar energy provides a promising solution for the energy crisis. PWM charge controller and 3-level SPWM inverter is designed with load angle control and synchronization. The system is simulated using Proteus and PIC18f4520 is used for control and switching signals. Simulation results verified the lower value of harmonic content in the SPWM and the switching frequency confirmed the applicability of microcontroller in the power system.