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In this paper, a bidirectional buck-boost converter for connecting energy storages to a DC microgrid is presented. The integration of energy storages into the microgrid allows an enhanced utilization of renewable energy sources. Therefore, an efficient control of energy storages and corresponding power converters is required. Two operating modes of the converter are considered: current control mode...
According to different operating modes of microgrid, different control strategies for energy storage system are presented. When microgrid parallels in the grid, the bus voltage of microgrid was supported by grid, and the energy storage system serves as the PQ source, using PQ control strategy; When microgrid is off-grid, the energy storage system serves as the main power supply of microgrid, using...
This paper presents the design and implementation of a hybrid microgeneration system based on two renewable energy sources and a storage battery. The wind energy interface is made using a three-phase diode rectifier and a step-up DCDC converter; the photovoltaic panels have a modular DC-DC converter with high voltage gain and based on the micro-inverter approach and the batteries are managed through...
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