CFD Simulation of Water-Based Hybrid Nanofluid Inside a Porous Enclosure Employing Lorentz Forces
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Author list: Shah Z., Sheikholeslami M., Kumam P., Shutaywi M., Thounthong P.
Publication year: 2019
Journal: International Journal of Innovative Computing, Information and Control (1349-4198)
Volume number: 7
Start page: 177177
End page: 177186
Number of pages: 10
ISSN: 1349-4198
Languages: English-Great Britain (EN-GB)
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Abstract
In this paper, an improved backstepping sliding mode controller is present- ed for stabilizing an electric power system including a superconducting magnetic energy storage (SMES) system. In the first two steps of the design procedure, a feedback stabi- lizing control law is designed through improved backstepping strategy while a sliding mode surface is included in the final step. The resulting control law is employed not only to enhance transient stability and voltage regulation of the system including SMES device, but also to ensure the overall closed-loop system stability. The developed control law is evaluated on a single-machine infinite bus (SMIB) power system with SMES. The simu- lation results are used to demonstrate the performance of the designed scheme compared with that of a conventional backstepping control and an immersion and invariance (I&I) control. From the simulation, the proposed method has dynamic performances almost equal to the I&I one. Further, it is capable of improving both transiently stability and the dynamic properties better than the conventional backstepping method in spite of the presence of a large disturbance or a small disturbance. ฉ 2019, ICIC International.
Keywords
Backstepping sliding mode method, Nonlinear control, Transient stabilization
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