Title :
A new current control scheme for AC motor drives
Author :
Enjeti, Prasad N. ; Ziogas, Phoivos D. ; Lindsay, James F. ; Rashid, Muhammad H.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A current control scheme based on programmed PWM switching patterns is presented for AC motor drives. In this scheme, reference and feedback current correspondence is maintained with simultaneous optimization of a performance objective. The proposed scheme overcomes the disadvantages of the existing current regulators using the direct control approach and exhibits several advantages in terms of reduced switching frequency, minimum current/torque ripple, higher efficiency, and improved performance in the AC motor drive. Analytical and experimental investigations on a current-regulated induction motor drive confirm the predicted advantages of the scheme
Keywords :
electric current control; electric drives; induction motors; machine control; pulse width modulation; AC motor drives; current control; current-regulated induction motor drive; direct control approach; feedback current; high efficiency; minimum current/torque ripple; programmed PWM switching patterns; reduced switching frequency; reference current; AC motors; Current control; Feedback; Hysteresis; Industry Applications Society; Motor drives; Pulse width modulation; Regulators; Steady-state; Switching frequency;
Journal_Title :
Industry Applications, IEEE Transactions on
