Sensorless SVM-Direct Torque Control for Induction Motor Drive Using Sliding Mode Observers

This paper presents an improved direct torque control strategy (DTC) for induction motor drive. The conventional DTC suffers from high torque ripples and variable switching frequency due to utilizing hysteresis comparators. The presented technique uses the space vector modulation in order to cover D...

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Bibliographic Details
Published in:Journal of control, automation & electrical systems automation & electrical systems, 2017-04, Vol.28 (2), p.189-202
Main Authors: Ammar, Abdelkarim, Bourek, Amor, Benakcha, Abdelhamid
Format: Article
Language:English
Subjects:
Anti-windup
Comparators
Control
Control and Systems Theory
Electrical Engineering
Engineering
Mechatronics
Motors
Observers
Performance enhancement
Proportional integral
Ripples
Robotics
Robotics and Automation
Sliding mode control
Space vector modulation
Switching
Torque
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Summary:This paper presents an improved direct torque control strategy (DTC) for induction motor drive. The conventional DTC suffers from high torque ripples and variable switching frequency due to utilizing hysteresis comparators. The presented technique uses the space vector modulation in order to cover DTC drawbacks and reduce high torque and flux ripples by maintaining a fixed switching frequency. An anti-windup proportional integral controller is considered for the outer speed loop. Furthermore, the control design is combined with dual sliding mode observers for speed/flux and load torque estimation in order to improve the control performances and reduce different uncertainties. Moreover, they minimize the number of sensors to decrease the cost and increase the reliability of the system. The effectiveness of the sensorless method has been investigated by simulation and experimental validation using MATLAB/Simulink software with real time interface based on dSpace 1104 bored.
ISSN:2195-3880
2195-3899
DOI:10.1007/s40313-016-0294-7