Related Experiment Video
Updated: Jan 19, 2026
11:18
AC Induction Motor; DC Test; No Load Test; Locked Rotor Test
Published on: April 30, 2023
12.5K
Feedback linearization based sensorless direct torque control using stator flux MRAS-sliding mode observer for
Abdelkarim Ammar1, Aissa Kheldoun2, Brahim Metidji2
1Signals and Systems Laboratory (LSS), Institute of Electrical and Electronic Engineering, University of M'hamed BOUGARA of Boumerdes, Boumerdes, Algeria; Electrical Engineering Laboratory of Biskra (LGEB), Electrical Engineering Department, University of Mohamed KHIDER of Biskra, Algeria.
ISA Transactions
|September 10, 2019
Summary
This study introduces a sensorless direct torque control (DTC) for induction motors, enhancing performance and reliability. The new method improves speed and flux estimation, especially at low speeds, reducing system costs.
Area of Science:
- Electrical Engineering
- Control Systems
- Power Electronics
Background:
- High-performance Direct Torque Control (DTC) relies on accurate flux and speed data.
- Sensorless drives reduce cost, size, and enhance reliability of electric drive systems.
Purpose of the Study:
- To propose an effective sensorless direct torque control (DTC) scheme for induction motor drives.
- To enhance decoupling structure and variable estimation for improved control accuracy and robustness.
Main Methods:
- Implemented an enhanced direct flux and torque control using feedback linearization for decoupled control and minimized ripples.
- Combined a sliding mode observer (SMO) and model reference adaptive system (MRAS) for sensorless rotor speed and flux estimation.
Main Results:
- Achieved linear decoupled control with minimized flux and torque ripples.
- Enhanced SMO performance at low speeds and reduced sensitivity to noise and uncertainties.
- Validated the control algorithm through MATLAB/Simulink simulations and dSpace 1104 experimental implementation.
Conclusions:
- The proposed sensorless DTC scheme effectively controls induction motors with improved accuracy and robustness.
- The combined SMO-MRAS approach significantly enhances low-speed performance and system reliability.
- This sensorless strategy offers a cost-effective and reliable solution for electric drive systems.
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