A grid interfacing scheme for renewable energy sources

This paper presents the development of a control scheme for grid tied inverters of renewable energy sources (RES). Hysteresis Current Control (HCC) is carried out in this work. The paper presents results of computer simulation as well as laboratory prototype developed. The experimental results using the hardware developed, proves the simplicity and reliability of the control scheme. Active power transfer through a grid connected inverter from a solar PV panel is also tested. The power delivered to the grid increases as the DC link voltage increases. The inverter is also tested on grid interface on the rotor side of a doubly fed induction generator.