Robust Sensorless Sliding Mode Flux Observer for DTC-SVM-based Drive with Inverter Nonlinearity Compensation

被引:16
作者
Aimad, Ahriche [1 ]
Madjid, Kidouche [1 ]
Mekhilef, Saad [2 ]
机构
[1] Univ Boumerdes, Dept Automat, Appl Automat Lab, Boumerdes, Algeria
[2] Univ Malaya, Dept Elect Engn, Power Elect & Renewable Energy Res Lab, Kuala Lumpur, Malaysia
关键词
Dead time compensation; Direct torque control; Induction motor; Sliding mode observer; Voltage source inverter; DEAD-TIME COMPENSATION; DIRECT TORQUE CONTROL; MOTOR; STRATEGY; VSI;
D O I
10.6113/JPE.2014.14.1.125
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
This paper presents a robust and speed-sensorless stator flux estimation for induction motor direct torque control. The proposed observer is based on sliding mode approach. Stator electrical equations are used in the rotor orientation reference frame to eliminate the observer dependence on rotor speed. Lyapunov's concept for systems stability is adopted to confme the observer gain. Furthermore, the sensitivity of the observer to parameter mismatch is recovered with an adaptation technique. The nonlinearities of the pulse width modulation voltage source inverter are estimated and compensated to enhance stability at low speeds. Therefore, a new method based on the model reference adaptive system is proposed. Simulation and experimental results are shown to verify the feasibility and effectiveness of the proposed algorithms.
引用
收藏
页码:125 / 134
页数:10
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