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This paper extensively analyzes the operation limits, system stability and disturbance rejection capability of the voltage control loops used in master-slave AC and DC Microgrids (MGs). Two different control schemes are studied analytically, simulated and experimentally tested, focusing on Constant Power Loads (CPL). Additionally, the use of the virtual capacitance (VC) as a tool for response enhancement...
Day by day there is increase in use of renewable sources like solar, wind for generating power because of decrease in availability of non renewable resources of energy like coal, natural gas, oil and tremendous developments in energy storage devices. Microgrids incorporate large amount of non conventional and conventional distributed generation (DG) that are connected to the system either directly...
An AC microgrid connected to a solar energy conversion system (SECS) and a battery energy storage system (BESS) with a novel energy management and control strategy is being presented in this paper. This configuration aims at feeding fixed power to the grid, thus reducing the extra burden on the grid created by local loads. The first stage boosts the PV voltage and harvests maximum power (Pmax) from...
A distributed secondary voltage controller is designed for droop-controlled microgrids in power distribution networks to improve power quality. Microgrids are typically managed by the droop control mechanism that ensures stability but does not guarantee power quality of voltage magnitude. To solve this power quality problem, the proposed distributed secondary voltage controller maintains a constant...
This paper presents the effectiveness of a microgrid (MG) in a distribution system. The combined heat and power (CHP) system is used to enhance the overall efficiency of the power system. Microturbines are used for CHP operation in this paper. The various methods of control of the MG are discussed. A simple low-cost model is proposed for MG based on frequency droop control for active power generation...
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