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《Journal of Chengde Petroleum College》 2015-01
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Research on Energy Management for DC Micro-Grid

LEI Peng-juan;MA Jun-wei;Department of Electrical and Electronic Engineering,Chengde Petroleum College;Chengde Kingdream Machinery Co. ,Ltd;  
Compared to the previous AC micro power grid,there are many advantages in DC micro power grid. In the DC micro power grid,in order to get stable power output,each power generation unit and energy storage unit need an independent DC-DC converter,which will produce a power conversion for DC and parallel in the DC bus terminal. In this paper,the DC micro grid energy management which made the photovoltaic battery as a power unit,super capacitor and battery as energy storage unit has been studied. The experimental results prove that the different working modes can be switched automatically and the stability of the bus voltage can be maintained by the coordination of energy storage system which is composed of super capacitor and battery.
【CateGory Index】: TM53;TM912
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