Title :
Nonlinear controller for induction motor drive
Author :
Mohanty, K.B. ; De, N.K.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kharagpur, India
Abstract :
An attempt has been made in the present work to improve the dynamic and steady state performances of the vector controlled induction motor (IM) drives. Input-output linearization and decoupling technique based on the concepts of differential geometry, has been used to decouple the speed, or torque from flux. Optimal proportional-integral (P-I) controllers in flux and speed loops are designed to obtain desired dynamic and steady state responses. A new rotor flux observer has been designed to estimate the flux at all speeds. Simulation results show that the performance of the drive system with the designed controller is comparable to that with vector controller and the proposed drive system is more flexible.
Keywords :
control system analysis; control system synthesis; induction motor drives; linearisation techniques; machine theory; machine vector control; nonlinear control systems; observers; optimal control; parameter estimation; two-term control; velocity control; PI control; control design; control simulation; decoupling technique; dynamic performance; induction motor drive; input-output linearization; nonlinear controller; optimal proportional-integral controllers; rotor flux observer; steady-state performance; vector control; Geometry; Induction motor drives; Induction motors; Observers; Optimal control; Pi control; Proportional control; Rotors; Steady-state; Torque;
Conference_Titel :
Industrial Technology 2000. Proceedings of IEEE International Conference on
Print_ISBN :
0-7803-5812-0
DOI :
10.1109/ICIT.2000.854140
