Controlling of Back to Back Converter for Load Sharing in Microgrid and Utility Grid

This paper proposes a method to share a load of utility grid or micro grid using back to back converter. A micro grid which is having distributed generation like photovoltaic power generators, wind power generation, distributed generation using bagaaas as fuel which is wastage material sugar mills. The current availability of biomass in India is estimated at about 500 millions metric tones per year. Studies sponsored by the Ministry has estimated surplus biomass availability at about 120 - 150 million metric tones per annum covering agricultural and forestry residues corresponding to a potential of about 18,000 MW. This apart, about 5000 MW additional power could be generated through bagasse based cogeneration in the country´s 550 Sugar mills, if these sugar mills were to adopt technically and economically optimal levels of cogeneration for extracting power from the bagasse produced by them. This extra distribution generation can be shared with utility grid using back to back converter. The back to back converter also provides frequency isolation between utility grid and micro grid.