Title :
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
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;
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
