Abstract:

Current research interests for renewable energy focuses on solar cells, wind power, hydrogen, as well as bio mass. None of them are, however, technologically mature or rich enough to replace the traditional energy. Solar cell and wind power are, for instance, extremey unstable while hydrogen, as a very clean and abundant energy source, still suffers from the technology barricade associated with cost and safety. It is highy expected that a micro grid that connects those renewablle energy resources are likely to overcome the existing problems and gradually take a position in application. The fundermental properties of the renewable energies and general feature of the micro grid are addressed.
 
 
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