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Design of Super-twisting algorithm stator flux observer for induction motor

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[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2016年05
Page:
60-67
Research Field:
Publishing date:

Info

Title:
Design of Super-twisting algorithm stator flux observer for induction motor

Author(s):
PAN Yue-dou12 CHEN Tao12 CHEN Ze-ping12
( 1. School of Automation,University of Science and Technology Beijing,Beijing 100083,China; 2. Key Laboratory of Advanced Control of Iron and Steel Process ( Ministry of Education) ,Beijing 100083,China)
Keywords:
induction motor super-twisting algorithm flux estimation current estimation direct torque control
PACS:
TM 343
DOI:
10. 15938 / j. emc. 2016. 05. 009
Abstract:
In order to improve the observation accuracy of stator flux of induction motor,a stator flux esti-mation method based on Super-twisting algorithm was proposed. A stator flux observer was designed and applied for direct torque control of induction motor. According to the robustness of sliding mode variable structure control,the disturbance of the multiple input multiple output stator flux observer system was re-strained. By using the advantages of Super-twisting algorithm which require less information to design a simple control law,and thus more suitable for practical engineering applications. The speed and amount of coupling were regarded as disturbances in the analysis of the stability of observer,and the sufficient condi-tions of the system uniformly asymptotically stable was presented. Compared with the u-i model observer, the proposed observer based on Super-twisting algorithm is more accurate and has better robustness to the change of stator resistance. Simulation and experiment results validate the proposed method.

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Last Update: 2016-06-26