Chaos control using self-feedback delay controller and electronic implementation in IFOC of 3-phase induction motor

Abstract

The dynamical behaviors and chaos control in Indirect Field Oriented Control (IFOC) of 3-phase induction motor is investigated in the present paper. The IFOC of 3-phase induction motor exhibits steady state behavior, Hopf bifurcation and chaotic behavior through period-doubling. The chaotic behavior is strewed with periodic oscillation. To eliminate the chaotic oscillations in IFOC of 3-phase induction motor, two self-feedback delay controllers are designed: The first is the simple controller and the second controller is with sliding mode method. Numerical simulations are used to show the efficiency of the both controllers. Among the both controllers, the simple self-feedback delay controller gives the better results by comparison to sliding mode self-feedback delay controller. Finally, the physical feasibility of simple self-feedback delay controller applied to IFOC of 3-phase induction motor is validated through electronic circuit’s implementation on OrCAD-PSpice software. The OrCAD-Pspice results are in agreement with the numerical results.

Keywords

• chaotic attractor
• hopf birfucation
• ifoc of 3-phase induction motor
• simple selffeedback delay controller
• circuit implementation.