Induction Motor Drive System Based on the Flux Observer LESO and LADRC

It is difficult to develop an accurate mathematical model for the induction motor and the robustness of vector control system is poor. This paper firstly uses the linear active disturbance rejection controller (LADRC) in inductor motor drive system. The controller is not overly dependent on the accu...

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Bibliographic Details
Main Authors: Liying Liu, Zhenlin Xu, Qiang Mei
Format: Conference Proceeding
Language:English
Subjects:
Active inductors
Control system synthesis
Control systems
flux observer
induction motor
Induction motor drives
Induction motors
LADRC
LESO
Machine vector control
Mathematical model
Motor drives
Robust control
robustness
Rotors
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Summary:It is difficult to develop an accurate mathematical model for the induction motor and the robustness of vector control system is poor. This paper firstly uses the linear active disturbance rejection controller (LADRC) in inductor motor drive system. The controller is not overly dependent on the accurate mathematical model of motor, so the system is inherently robust, and it can estimate and compensate the general disturbance that includes the unknown internal dynamics and the external disturbance, so the rotor flux decouples with torque completely. Furthermore, the linear extended state observer (LESO) is used to observe rotor flux and it is robust to rotor resistance. Simulations show that the above control strategy has a better static and dynamic performances and the strong robustness.
ISSN:2155-6083
2155-6091
DOI:10.1109/GCIS.2009.218