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@article{145843,
        author = {A.VIJAYA KUMAR REDDY and M. SIVAKOTESWARA RAO},
        title = {COMPENSATION OF LOW-FREQUENCY OSCILLATIONS DAMPING IN MULTIBUS DC MICROGRIDS APPLICATIONS},
        journal = {International Journal of Innovative Research in Technology},
        year = {},
        volume = {4},
        number = {11},
        pages = {979-986},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=145843},
        abstract = {This paper proposes a new active method for low frequency (LF) current/power oscillations damping in droopcontrolled dc microgrids. Since, LF oscillations are mainly affected by droop controllers of voltage controlled (VC) DGs, detailed small-signal analysis of VC-DGs is provided. Analysis shows that each droop-controlled VC-DG creates a pair of LF complex conjugate zeros. In the proposed method, these zeros are damped by a negative feedforward of the disturbance variables (output currents) of VC-DGs. Stability analysis of the overall dc microgrid reveals that the LF zeros of VC-DGs can affect the LF modes of the system. Therefore, in the proposed method, the effective tuning of feedforward gain of each VC-DG can increase the damping factor of microgrid LF modes and consequenctly improve the dynamic response of the whole system. Moreovere, to gurantee the plug-and-play performance of DGs, a coordinanted tuning criterion for adjusting the proper feedforward gains is presented. It is shown that the proposed method is also robust against structural changes in dc microgrids. A complete set of simulation studies using MATLAB/Simulink is provided which further},
        keywords = {},
        month = {},
        }