A speed estimator for high performance sensorless control of induction motors in the field weakening region

被引：55
|
作者：
Levi, E [1 ]
Wang, MY
机构：
[1] Liverpool John Moores Univ, Sch Engn, Liverpool L3 3AF, Merseyside, England
[2] Chongqing Univ, Coll Elect Engn, Chongquig 400044, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2002年 / 17卷 / 03期
关键词：
D O I：
10.1109/TPEL.2002.1004244
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper proposes a modified version of the model reference adaptive system (MRAS) based speed estimator, whose outputs of the reference and the adjustable model are rotor flux space vectors. The estimator is modified in such a way that the variation in the instantaneous level of the main flux saturation during operation in the field weakening is recognized and properly compensated at all times. The speed estimation scheme is equally applicable to both vector controlled and direct torque controlled induction machines, since it operates in the stationary reference frame and requires measurement of only stator voltages and currents. Verification of the proposed scheme is provided by simulation and by experimentation on an indirect feed-forward rotor flux oriented induction machine for speed references of up to twice the base speed.
引用
收藏
页码：365 / 378
页数：14
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