Title :
Four quadrant robust quick response optimally efficient inverter fed induction motor drive
Author :
Islam, Syed M. ; Rashid, Muhammad H.
Author_Institution :
Res. Inst., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
A new approach for controlling the speed of an inverter-fed induction motor which operates with variable flux for high-efficiency purposes is presented. An optimal efficiency calculator provides optimum flux and torque producing current, while a supervisory control eliminates the intricate boot-strap effect of the flux-torque loop. A model reference-based adaptive speed controller guarantees quick speed response and robustness of the drive system. Simulation results with a 100-hp motor show that up to 80% savings in controllable losses are achievable at light load, and the motor can reach rated speed in just 750 ms. The control algorithms developed are readily implementable with present-day microprocessors
Keywords :
induction motors; invertors; model reference adaptive control systems; variable speed drives; velocity control; control algorithms; inverter fed induction motor drive; light load; model reference-based adaptive speed controller; optimal efficiency calculator; optimum flux; rated speed; robustness; speed response; supervisory control; torque producing current; variable flux; AC motors; Adaptive control; Induction motor drives; Induction motors; Inverters; Machine vector control; Robust control; Robustness; Torque control; Voltage;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101968
