Title :
A fuzzy adapted field-oriented mechanism for induction motor drive
Author :
Liaw, C.M. ; Wang, J.B. ; Chang, Y.C.
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
3/1/1996 12:00:00 AM
Abstract :
The detuning of an indirect field-oriented induction motor drive due to variation of rotor resistance may lead to low efficiency and poor transient response. To improve this, an induction motor drive with a fuzzy adapted field-oriented mechanism is proposed. During steady state conditions, an adapted slip angular speed signal is synthesized by a fuzzy controller and used to adjust the original estimate of slip angular speed signal such that minimum stator current is obtained. When the transient due to command or load torque change occurs, the fuzzy tuning mechanism is temporarily inhibited and the final value of the adapted signal is held. A discrete two-degree-of-freedom controller (2DOF) is designed to yield good speed command tracking and load regulating responses. The effectiveness of the proposed motor drive is demonstrated experimentally
Keywords :
adaptive control; control system synthesis; controllers; digital control; electric resistance; fuzzy control; induction motor drives; machine control; power engineering computing; rotors; stators; transient response; adapted slip angular speed signal synthesis; digital controller; discrete two-degree-of-freedom controller; fuzzy adapted field-oriented mechanism; fuzzy controller; fuzzy tuning mechanism; good speed command tracking; induction motor drive; load regulating responses; load torque change; low efficiency; minimum stator current; poor transient response; rotor resistance variation; steady state conditions; Fuzzy control; Induction motor drives; Motor drives; Rotors; Signal synthesis; State estimation; Stators; Steady-state; Torque; Transient response;
Journal_Title :
Energy Conversion, IEEE Transactions on
