Grid-tied Power Control and Storage Reduction in AC Microgrids with Hybrid Electric Springs

PROJECT TITLE :

Hybrid Electric Springs for Grid-tied Power Control and Storage Reduction in AC Microgrids

ABSTRACT:

Battery energy storage devices are the traditional means by which renewable generation (RG) is connected to the utility grid (BESS). It is the power difference between the RG and grid that passively controls the battery power in this cascaded combination of grid-connected inverter, battery, and RG. This enhances the storage capacity of the battery by compromising the battery's state-of-charge (SoC) regulation. This research proposes a grid-tied power regulation and battery storage capacity reduction in ac microgrids using a hybrid electric spring (HES), which is integrated with the RG and noncritical load (NCL). A battery, NCL, and grid power flow may be managed more easily with such an integrated setup. In addition, the suggested HES is capable of working in a wider range of grid-tied power regulation than the standard BESS and the existing electric springs. The HES is described in terms of its operation, steady-state analysis, and control architecture. Experiments and computer simulations are used to verify the grid-tied power regulation and battery SoC control functions.

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