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Nonlinear adaptive backstepping controller design for controlling bidirectional power flow of BESSs in DC microgrids

Roy, T. K., Mahmud, M. A., Oo, A. M. T., Haque, M. E., Muttaqi, K. and Mendis, N. 2016, Nonlinear adaptive backstepping controller design for controlling bidirectional power flow of BESSs in DC microgrids, in IACC 2016 : Proceedings of the 51st IEEE IAS Industrial Automation and Control Committee Annual Meeting, IEEE, Piscataway, N. J., pp. 1-8, doi: 10.1109/IAS.2016.7731875.

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Title Nonlinear adaptive backstepping controller design for controlling bidirectional power flow of BESSs in DC microgrids
Author(s) Roy, T. K.
Mahmud, M. A.ORCID iD for Mahmud, M. A. orcid.org/0000-0002-5302-5338
Oo, A. M. T.
Haque, M. E.ORCID iD for Haque, M. E. orcid.org/0000-0002-8893-2181
Muttaqi, K.
Mendis, N.
Conference name IEEE Industrial Automation and Control Committee. Annual Meeting (51st : 2016 : Portland, Oregon)
Conference location Portland, Oregon
Conference dates 2-6 Oct. 2016
Title of proceedings IACC 2016 : Proceedings of the 51st IEEE IAS Industrial Automation and Control Committee Annual Meeting
Editor(s) [Unknown]
Publication date 2016
Conference series IEEE Industrial Automation and Control Committee Annual Meeting
Start page 1
End page 8
Total pages 8
Publisher IEEE
Place of publication Piscataway, N. J.
Keyword(s) adaptive backstepping controller
battery energy storage system
control Lyapunov function
DC microgrid
renewable energy sources
Summary In this paper, a nonlinear adaptive backstepping controlleris designed to control the bidirectional power flow (charging/discharging) of battery energy storage systems (BESSs) in a DCmicrogrid under different operating conditions. The controller isdesigned in such a manner that the BESSs can store the excess energyfrom the renewable energy sources (RESs) in a DC microgrid aftersatisfying the load demand and also feeding back the stored energyto the load when RESs are not sufficient. The proposed controller isalso designed to maintain a constant voltage at the DC bus, whereall components of DC microgrids are connected, while controllingthe power flow of BESSs. This paper considers solar photovoltaic(PV) systems as the RES whereas a diesel generator equipped witha rectifier is used as a backup supply to maintain the continuity ofpower supply in the case of emergency situations. The controller isdesigned recursively based on the Lyapunov control theory whereall parameters within the model of BESSs are assumed to beunknown. These unknown parameters are then estimated throughthe adaptation laws and whose stability is ensured by formulatingsuitable control Lyapunov functions (CLFs) at different stages ofthe design process. Moreover, a scheme is also presented to monitorthe state of charge (SOC) of the BESS. Finally, the performanceof the proposed controller is verified on a test DC microgrid undervarious operating conditions. The proposed controller ensures the DCbus voltage regulation within the acceptable limits under differentoperating conditions.
ISBN 9781479983971
Language eng
DOI 10.1109/IAS.2016.7731875
Field of Research 090601 Circuits and Systems
091302 Automation and Control Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2016, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084029

Document type: Conference Paper
Collections: School of Engineering
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