DESIGN OF DC MICROGRID

A detailed review of various modes of operation and operational structures has been simulated.

DESIGN OF DC MICROGRID

DC loads have proliferated rapidly on the market today and DC micro grids with renewable energies are being built as a potential solution to meet the rising demand for electricity. As different energy sources such as solar, wind, fuel cell, and diesel generators can be incorporated into the DC grid, it is important to control the power flow between the sources. An attempt is made in this project to study the hybrid system consisting of a three energy sources, namely wind energy, photovoltaic power source and Battery. Each of the three energy sources is controlled to deliver uninterrupted power supply to the load. A control strategy for the management of power flows with solar and wind energy sources in DC micro grid are discussed. Given that voltage profile regulation is critical in a standalone system, a dedicated converter should be used to maintain the voltage of the DC connection. The battery circuit regulates DC charging voltage, while the full power is derived from Solar and Wind to power the attached DC bus charges. An algorithm is developed to manage power flow between three outlets. The algorithm is evaluated in MATLAB / SIMULINK environments for different charging conditions and variations in solar and wind energy.

A detailed review of various modes of operation and operational structures has been discussed. In both the modes of operation, a DC microgrid can operate efficiently by implementing a proper power and energy management techniques. By designing a proper controller will reduce the voltage flickering and increase the stabilization in both grid connected and islanded mode. Smooth switching between these modes is also a key area for this project.

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