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Electricity in remote communities is usually provided by diesel power plants at relatively high costs. This issue can be addressed with the addition of renewable energy sources such as wind and PV. However, due to the intermittent and fluctuating characteristics of the power produced by these sources, the dispatch of the diesel gensets for operation with variable (droop-based) frequency, high efficiency...
In this paper (Part II), a control strategy for a single-phase series-connected inverter with the microgrid is proposed to interface ac loads not only to regulate the load voltage under voltage disturbances, but also to control the load power drawn from the microgrid. The inverter compensating voltage works in such a way that, irrespective of any type of disturbances in the microgrid voltage (such...
Cascaded multilevel inverters appear as a promising solution in the development of AC power supplies for renewable energy sources, particularly those with DC output. This paper addresses the development of a distributed generation system consisting of a multilevel inverter supplied by fuel cells and controlled by fuzzy logic. The proposed system operates in grid-connected as well as in stand alone...
Renewable energy sources such as wind and photovoltaics (PV) have great potential for reducing fuel consumption in diesel-based mini-grids in remote communities. However, the fluctuating and intermittent nature of these sources can give rise to a number of problems in mini-grids with high penetration of non-dispatchable renewables with reduced or non-existent storage units. This paper proposes the...
With the increasing concerns for the traditional energy shortage and environment issues, distributed generation (DG) systems based on renewable energy sources (RES) have experienced a fast development in recent years. With more DG units being integrated into the power system, a more recent concept, called microgrid, is developed by grouping a cluster of loads and parallel DG units in a local area...
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