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Efficient and effective use of renewable energy, distributed generation and energy storage can potentially solve global problems such as energy crisis and climate change. A promising solution to interconnecting these distributed energy resources with the grid is the microgrid paradigm. A microgrid may comprise a variety of inverter-interfaced distributed energy resources such as photovoltaic arrays,...
Due to the rapid increase in global energy consumption and the diminishing of fossil fuels, the customer demand for new generation capacities and efficient energy production, delivery and utilization keeps rising. Utilizing distributed generation, renewable energy and energy storage can potentially solve such problems as energy shortage and global warming. A promising structure to interconnect these...
This paper presents a microgrid paradigm with both DC and AC links, which may provide an effective way to integrate a heterogeneous set of small-size distributed energy resources into the existing electric power infrastructure. The collection of aggregated energy resource units at each level represents those distributed resources to the upper level as a single self-regulated entity (as a DC or AC,...
This paper describes an approach to hierarchical integration of DC and AC microgrids containing distributed energy resources (DERs) into the existing electric power distribution infrastructure. Power electronic interfaces and controls permit the aggregated units at each level to represent themselves to a higher level as a single self-controlled entity (DC or AC, load or generator). At the top level...
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