Integration of Renewable Energy Resources into a Power Electronic Power System

The use of renewable energy sources (RES) has increased exponentially during the present years. Even though the energy production through the renewable sources had increased, they are unable to integrate it into the utility power grid directly. This happens due to the frequency instability and other differences which are existing between the utility power grid and that of micro grids (WECS or SPV). If we are able to integrate the renewable sources to the utility grid, the overall power production will be large and thus the increased energy demand can be easily met. Here in this paper we are discussing about the possibility of integration of different renewable energy resources to the utility grid with the help of a power electronic transformer in combination with a variable frequency converter and also the methods to solve the existing frequency instability in the utility power system.