A Renewable Energy based Hybrid Autonomous Grid

A paradigm shift to renewable energy based autonomous grids are being observed worldwide. The dc autonomous systems are being explored in addition to the ac autonomous systems to provide power to many electronics appliances without going through rectification and filtering. This paper explores the possibilities of having a hybrid autonomous grid providing quality power to both ac and dc loads directly. An Induction Generators based ac grid is proposed whose requirement of reactive power under dynamic mode is met by a DSTATCOM. The dc bus of the DSTATCOM is supplied by a Solar PV source. The dc bus forms the dc grid and directly supplies the dc loads. The autonomous grid is simulated as a hybrid grid to supply both ac and dc power. The entire simulation is carried out on a MATLAB platform.