Higher Order Sliding Mode Observer Based Fast Composite Backstepping Control for HESS in DC MicrogridsShow others and affiliations
2024 (English)In: IEEE Transactions on Sustainable Energy, ISSN 1949-3029, E-ISSN 1949-3037, Vol. 15, no 3, p. 1627-1639Article in journal (Refereed) Published
Abstract [en]
Hybrid energy storage system (HESS) is effective to compensate for fluctuation power in renewables and fast fluctuation loads in DC microgrids. To regulate DC bus voltage, a power management strategy is an essential issue. In the meantime, the increasing integration of constant power loads (CPLs) in DC microgrids brings great challenges to stable operation due to their negative incremental impedance. In this paper, a fast composite backstepping control (FBC) method is proposed for the HESS to achieve faster dynamics, smaller voltage variations, and large-signal stabilization. In the FBC method, a higher order sliding mode observer (HOSMO) is adopted to estimate the coupled disturbances. Furthermore, the FBC method is integrated with the droop control; so that the FBC-based decentralized power allocation (FBC-DPA) strategy for HESS in DC microgrids is developed. The proposed FBC method is designed based on the Lyapunov function to ensure its stability. Moreover, the design guidelines are provided to facilitate the application of the proposed method. Both simulation and experimental studies under different operating scenarios show that the proposed method achieves faster voltage recovery and smaller voltage variations than the conventional backstepping control method.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2024. Vol. 15, no 3, p. 1627-1639
Keywords [en]
Microgrids, Voltage control, Stability analysis, Observers, Resource management, Energy storage, Backstepping, Backstepping control, higher order sliding mode observer, decentralized control, constant power loads, hybrid energy storage system, dc microgrid
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-350504DOI: 10.1109/TSTE.2024.3364653ISI: 001252808200035Scopus ID: 2-s2.0-85187280431OAI: oai:DiVA.org:kth-350504DiVA, id: diva2:1884385
Note
QC 20240716
2024-07-162024-07-162024-07-16Bibliographically approved