Title :
Transient torque maximizing strategy of induction machine in field weakening region
Author :
Song, Seung-Ho ; Choi, Jong-Woo ; Sul, SeungKi
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper, a new field weakening algorithm which maximizes the output torque not only in steady state but also in transient state is proposed, Considering both voltage and current limits of the system, analytic solutions for optimal torque utilization in field weakening region I and region II are obtained. This algorithm finds optimal currents considering dynamic voltage limit based on flux and speed. So the maximum usage of stator voltage even in transient state results in the maximum torque and fast response time. Simulation and experimental results show the effectiveness of the proposed field weakening scheme
Keywords :
induction motor drives; machine theory; stators; torque; current limit; drives; dynamic voltage limit; field weakening region; induction machine; maximum stator voltage usage; output torque maximisation; steady state; transient torque maximizing strategy; voltage limit; Equations; Induction machines; Inverters; Pulse width modulation; Research and development; Rotors; Stators; Steady-state; Torque control; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703387
