Observability Analysis for Speed Sensorless Induction Motor Drives With and Without Virtual Voltage Injection

被引：16
|
作者：
Sun, Wei [1 ]
Xu, Dianguo [2 ]
Jiang, Dong [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Wuhan 430074, Hubei, Peoples R China
[2] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Heilongjiang, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2019年 / 34卷 / 09期
关键词：
Induction motor; robustness formotor parameter deviation; signal injection; speed sensorless drives; FULL-ORDER OBSERVER; MACHINES; STRATEGY; ZERO;
D O I：
10.1109/TPEL.2018.2883589
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：
For speed sensorless induction motor drives, the unobservable problem of rotor speed at low synchronous speed has not been solved yet. To obtain a unified observable condition, the local weak observability concept is used in this paper. Based on the result of analysis, virtual voltage injection method is proposed. With this method, the states of induction motor, including rotor speed, are locally weakly observable at zero synchronous. The stability of proposed method is proved by Lyapunov's stability theorem. Finally, the feasibility of proposed method is verified by experiments.
引用
收藏
页码：9236 / 9246
页数：11
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