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An alternative LQR-based excitation controller design for power systems to enhance small-signal stability

Mahmud, M.A. 2014, An alternative LQR-based excitation controller design for power systems to enhance small-signal stability, International journal of electrical power and energy systems, vol. 63, pp. 1-7, doi: 10.1016/j.ijepes.2014.05.045.

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Title An alternative LQR-based excitation controller design for power systems to enhance small-signal stability
Author(s) Mahmud, M.A.ORCID iD for Mahmud, M.A. orcid.org/0000-0002-5302-5338
Journal name International journal of electrical power and energy systems
Volume number 63
Start page 1
End page 7
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2014-12
ISSN 1879-3517
Summary This paper presents a new approach to design excitation controller for power systems to enhance small-signal stability. Partial feedback linearization scheme is used to design the controller for a linearized power system model which transforms a part of this model into a new system through linear coordinate transformation. In this paper, the excitation control law as a function of state variables is determined from the dynamics of the partly transformed new system provided that the controller stabilizes the remaining dynamics of the system which are not transformed through feedback linearization. The stability of the remaining dynamics is also discussed in this paper. Since the proposed control scheme uses state variables as feedback, it is analogous to a linear quadratic regulator (LQR) based excitation controller. Therefore, the performance of the proposed scheme is evaluated on a single machine infinite bus (SMIB) system and compared to that of an LQR controller.
Language eng
DOI 10.1016/j.ijepes.2014.05.045
Field of Research 090602 Control Systems, Robotics and Automation
090603 Industrial Electronics
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084013

Document type: Journal Article
Collection: School of Engineering
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