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

被引:22
作者
Ammar A. [1 ]
Bourek A. [1 ]
Benakcha A. [1 ]
机构
[1] LGEB Laboratory, Department of Electrical Engineering, University of Biskra, BP 145, Biskra
关键词
Anti-windup controller; Direct torque control (DTC); dSpace; 1104; Induction motor; Load torque observer; Sliding mode observer; Space vector modulation (SVM);
D O I
10.1007/s40313-016-0294-7
中图分类号
学科分类号
摘要
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. © 2016, Brazilian Society for Automatics--SBA.
引用
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页码:189 / 202
页数:13
相关论文
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