Title :
A fuzzy-PWM direct torque control of induction machines for current limitation and reduced torque ripple
Author :
Restrepo, J.A. ; Viola, J.C. ; Ortega, M. ; Guzmán, V.M. ; Giménez, M.I.
Author_Institution :
Simon Bolivar Univ.
Abstract :
In this paper a PWM-fuzzy direct torque controller for induction machines is proposed, with a current limiting function during start-up or for changes in the flux-linkage reference. The use of PWM in the controller provides a constant switching frequency, and provides additional degrees of freedom to regulate the stator current, stator flux-linkage build-up and torque production. Also, these additional degrees of freedom provide smooth state variables, and a reduction in the torque ripple. The proposed scheme is verified by simulations and by experimental test
Keywords :
PWM invertors; asynchronous machines; current limiters; machine control; stators; switching convertors; torque control; current limitation; current limiting function; flux-linkage reference; fuzzy-PWM direct torque control; induction machines; stator current; stator flux-linkage; switching frequency; torque ripple; Bridge circuits; Couplings; Fuzzy control; Induction machines; Pulse width modulation; Pulse width modulation inverters; Stators; Switching frequency; Torque control; Voltage control; AC machine; Current limiter; Direct torque and flux control; Fuzzy control;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219654
