Title :
Maximum torque control of an induction machine in the field weakening region
Author :
Kim, Sang-Hoon ; Sul, Seung-Ki
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper, a new approach to the induction machine control that ensures the production of maximum torque per ampere over the entire field weakening region is presented. Considering the limitations of voltage and current, the optimal current condition for yielding the maximum torque is obtained. Also, since the onset of the field weakening operation is automatically adjusted according to the flux level, the current limit and the voltage limit, smooth and precise transition can be obtained. The proposed scheme is verified through simulation and experiment with a 5-hp laboratory induction motor drive system
Keywords :
control system analysis; control system synthesis; electric current control; induction motor drives; machine control; machine testing; machine theory; optimal control; torque control; 5 hp; current limit; experiment; field weakening region; flux level; induction machine; induction motor drive; maximum torque control; optimal current condition; simulation; voltage limit; Frequency; Inductance; Induction machines; Industry Applications Society; Inverters; Laboratories; Production; Stators; Torque control; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on