Wednesday, 2 June 2010

Wseas Transactions

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Transactions: WSEAS TRANSACTIONS ON SYSTEMS
Transactions ID Number: 89-881
Full Name: Nizar Jabli
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: 13, Street of sidi fraj al ansari, zawiat Kontech, 5020, Jammal
Country: TUNISIA
Tel: 23556721
Tel prefix: +216
Fax:
E-mail address: jabli.nizar@yahoo.fr
Other E-mails: nj_razin@yahoo.fr
Title of the Paper: Bifurcation and chaos phenomena appearing in induction motor under variation of PI controller parameters
Authors as they appear in the Paper: Nizar Jabli, Hedi Khammari, Mohamed Faouzi Mimouni, Rachid Dhifaoui
Email addresses of all the authors: jabli.nizar@yahoo.fr,gham.hedi@hotmail.com,mfaouzi.mimouni@enim.rnu.tn,Rachid.Dhifaoui@insat.rnu.tn
Number of paper pages: 10
Abstract: Bifurcation theory deals with the change of qualitative behavior in a parameter space of dy- namical systems. This paper provides a numerical approach to better understand the dynamic behavior of an indirect field oriented control (IFOC) of a current-fed induction motor. The focus is on bifurcation analysis of the IFOC motor model parameters, with a particular emphasis on the change that affects the dynamics and stability under small variations of Proportional Integral controller (PI) parameters. In fact, the dynamical properties of this electrical machine exhibit a rich behavior. Indeed equilibrium point and complex oscillatory phenomena such as limit cycle and chaos are observed. Since a perturbation of PI control gains led to the existence of regular behavior and region where chaotic phenomena may occur. Properties of both parametric and phase plane singularities are carried out by using numerical simu- lations. Furthermore, bifurcation diagrams for the equilibr!
ium points and the 2-parametric bifurcation curves are computed based on continuation methods for solving differential equations. This paper also attempts to discuss various types of the transition to chaos in the induction motor model. The analysis of the obtained bifurcation simulations gives useful guidelines for adjusting both motor model and PI controller parameters.
Keywords: Induction motor, PI controller gains, Qualitative behavior, Bifurcation, Chaos.
EXTENSION of the file: .pdf
Special (Invited) Session: Bifurcation scenario and chaos detection under variation of PI controller and induction motor parameters
Organizer of the Session: 633-351
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