Title :
PI and fuzzy estimators for tuning the stator resistance in direct torque control of induction machines
Author :
Mir, Sayeed ; Elbuluk, Malik E. ; Zinger, Donald S.
Author_Institution :
Dept. of Electr. Eng., Akron Univ., OH, USA
Abstract :
Direct torque control (DTC) uses the stator resistance of the machine for the estimation of stator flux. The variation of stator resistance due to temperature changes in the machine, makes the operations difficult at low speeds. A method for the estimation of changes in stator resistance during the operation of the machine is presented. The estimation is implemented with PI control and fuzzy logic control schemes. The estimators observe the stator current vector of the machine to detect the changes in stator resistance. The performance of the two methods is compared using simulation and experimental results
Keywords :
electric drives; electric resistance; fuzzy control; induction motors; machine control; machine theory; magnetic flux; parameter estimation; stators; torque control; two-term control; PI control; PI estimator; direct torque control; fuzzy estimator; fuzzy logic control; induction machines; induction motor drives; stator current vector; stator flux estimation; stator resistance tuning; stator resistance variation; Electric resistance; Electric variables control; Equations; Fuzzy control; Fuzzy logic; Induction machines; Induction motors; Pi control; Sliding mode control; Stators; Temperature; Torque control;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349655
