P. Aravindan , T. Vidya
Parallel operation of number of Voltage Source Inverters (VSIs) composed of Microgrids (MGs). The steps towards the standardization of these MGs have been fulfilled in this paper. In this sagacity, a hierarchical control scheme for the parallel operated VSI system is urbanized self-possessed of two control levels. The primary control encloses the droop method pursued by the virtual impedance loops. The secondary control renovates the frequency and amplitude deviations twisted by the above method. In order to connect the MG to the main grid, a synchronization algorithm is obtainable. Simulation results are provided to accomplish the good frequency and voltage amplitude and also augment the consistency of the MG control system.
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