XING Pengxiang, FU Lijun, WANG Gang, et al. Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid[J]. 2018, 44(7): 2346-2353.
XING Pengxiang, FU Lijun, WANG Gang, et al. Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid[J]. 2018, 44(7): 2346-2353.DOI:
In order to make full use of the virtual synchronous generator(VSG) in frequency modulation
we propose an enhanced VSG for AC/DC hybrid microgrid. The proposed method adds an auxiliary power control loop that is associated with the frequency deviation into the basic VSG control structure
enabling it to provide more power to participate in system frequency modulation after load disturbance and to further reduce the frequency deviation. For the purpose of verification
an AC/DC hybrid microgrid model is built in Matlab/Simulink software
in which the VSG is used as the interface inverter
and a VSG prototype is developed in the laboratory. Simulations and experiments indicate that
compared to the conventional VSG
the enhanced VSG with the given control parameters can further reduce the frequency deviation by about 25% after the same load disturbance
which proved the proposed method to be feasible and effective.