Stabilization of unstable equilibrium points by time-delayed feedback control method in an induction motor drive system

Author

Li, Hongmei ; Wang, Xiaochen ; Li, Wensheng

Author_Institution

Dept. of Electr. Eng., Hefei Univ. of Technol., Hefei

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

1082

Lastpage

1085

Abstract

In this paper, the time-delayed feedback control method is introduced to stabilize unstable equilibrium points undergoing Hopf bifurcation for an induction motor (IM) drive system. Stability criterion of a nonlinear time-delayed system is first established, and then an effective procedure is shown how to stabilize the unstable equilibrium points by suitably select the feedback gain k and the time-delay tau in the condition of variant input voltage for an IM drive system. Finally, simulation researches validate the correctness of theoretical analysis.

Keywords

bifurcation; feedback; induction motor drives; machine control; stability; Hopf bifurcation; feedback gain; induction motor drive system; nonlinear time-delayed system; time-delayed feedback control method; unstable equilibrium point stabilization; Bifurcation; Cities and towns; Delay effects; Equations; Feedback control; Frequency; Induction motor drives; Induction motors; Nonlinear systems; Stability criteria;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4770879