Design, analysis and simulation of synchronous reference frame based Phase Lock Loop for grid connected inverter

摘要

With the increases in demand of energy, the non renewable energy sources have depleted and also there is a concern of global warming with the use of non renewable source of energy. So there arises a need to find new energy resources which are in bulk and also does not affect the environment. Solar is one of the best solution among all the renewable source of energy available today. Nowadays photovoltaic (PV) system are mostly recognized and widely used for different types of power system applications. Solar panels convert solar energy into electricity, if DC load is there it can be fed directly by panel through DC-DC converter and if alternating current (AC) load is there, which is mostly in residential and industrial applications, inverter is connected to DC-DC converter. As demand has rise maximum utilization of power is also a major concern, the power generated by solar should be fully utilized for the extra power generated is fed to grid by synchronizing solar inverter with grid. This paper presents simulation of Phase Lock Loop (PLL) with grid connected inverter using Synchronous Reference Frame (SRF) method and close loop boost converter.