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Nonlinear backstepping controller design for sharing active and reactive power in three-phase grid-connected photovoltaic systems

Roy, T. K., Mahmud, M. A., Hossain, M. J. and Maung Than Oo, A. 2015, Nonlinear backstepping controller design for sharing active and reactive power in three-phase grid-connected photovoltaic systems, in AUPEC 2015 : Challenges for future grids : Proceedings of the 25th Australian Universities Power Engineering Conference, IEEE, Piscataway, N.J., pp. 1-6.

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Title Nonlinear backstepping controller design for sharing active and reactive power in three-phase grid-connected photovoltaic systems
Author(s) Roy, T. K.
Mahmud, M. A.ORCID iD for Mahmud, M. A. orcid.org/0000-0002-5302-5338
Hossain, M. J.
Maung Than Oo, A.
Conference name Australian Universities Power Engineering. Conference (25th : 2015 : Wollongong, New South Wales)
Conference location Wollongong, N.S.W.
Conference dates 27-30 Sep. 2015
Title of proceedings AUPEC 2015 : Challenges for future grids : Proceedings of the 25th Australian Universities Power Engineering Conference
Publication date 2015
Start page 1
End page 6
Total pages 6
Publisher IEEE
Place of publication Piscataway, N.J.
Summary In this paper, a nonlinear backstepping controller is designed for three-phase grid-connected solar photovoltaic (PV) systems to share active and reactive power. A cascaded control structure is considered for the purpose of sharing appropriate amount of power. In this cascaded control structure, the dc-link voltage controller is designed for balancing the power flow within the system and the current controller is designed to shape the grid current into a pure sinusoidal waveform. In order to balance the power flow, it is always essential to maintain a constant voltage across the dc-link capacitor for which an incremental conductance (IC) method is used in this paper. This approach also ensures the operation of solar PV arrays at the maximum power point (MPP) under rapidly changing atmospheric conditions. The proposed current controller is designed to guarantee the current injection into the grid in such a way that the system operates at a power factor other than unity which is essential for sharing active and reactive power. The performance of the proposed backstepping approach is verified on a three-phase grid-connected PV system under different atmospheric conditions. Simulation results show the effectiveness of the proposed control scheme in terms of achieving desired control objectives.
ISBN 9781479987252
Language eng
Field of Research 090602 Control Systems, Robotics and Automation
090603 Industrial Electronics
090608 Renewable Power and Energy Systems Engineering (excl Solar Cells)
Socio Economic Objective 850504 Solar-Photovoltaic Energy
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2015, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080954

Document type: Conference Paper
Collection: School of Engineering
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