File(s) under permanent embargo
An alternative LQR-based excitation controller design for power systems to enhance small-signal stability
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. © 2014 Elsevier Ltd. All rights reserved.
History
Journal
International Journal of Electrical Power and Energy SystemsVolume
63Pagination
1 - 7Publisher DOI
ISSN
0142-0615Publication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2014, ElsevierUsage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC