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In this paper, an optimal secondary voltage control (SVC) strategy has been proposed for an islanded multibus microgrid (MG). The proposed strategy consists of a multiobjective function, power flow equality constraints, and four sets of inequality constraints. The multiobjective function aims to achieve a compromise between multibus voltage regulation and reactive power distribution among voltage...
The monitoring and supervision of grid-connected solar and wind energy sources with consumers require further improvement of the performance and the stability of energy transfer. Therefore, the effective communication between the power generation and the supervisory nodes of power grids are necessary to manage electrical generation from renewable energy sources. The communication interface, which...
Wind/hydrogen/diesel cogeneration systems can be quite attractive for the energy supplies of remote communities in terms of economic and environmental factors. For such a weak grid, a power electronics-based dump load controller is usually deployed for frequency regulation to balance the generation and demand. This paper presents a two-leg IGBT-based load controller, which can be operated in low power,...
A typical micro-grid with multi-energy generators (MGMEG) is composed of renewable energy generation systems including wind, photovoltaic, biomass etc., and fuel cells, energy storages and local loads. The most important feature of a MGMEG is its ability to separate and isolate itself from the utility system, during a utility grid disturbance. Power electronic interfaces, typically voltage source...
In the districts where solar energy and wind energy are naturally complementary, the application of wind-solar hybrid generation systems (WSHGS) can reduce the storage capacity of batteries and the total cost of the system compared with stand-alone PV or wind generation system. This paper presents a cost-effect controller system for 1 kW to 5 kW WSHGS with low DC voltage input (24 V DC or 48 V DC)...
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