Application of MRAS Observer in Induction Motor Drive with Direct Torque Control

Huu Hau Vo

Disertační práce

Anotace:

The PhD thesis describes model reference adaptive system speed observers for a speed sensorless induction motor drive with direct torque control methods. A mathematical description of components in control system such as induction motor, frequency converter is given. Theoretical analyses and assumptions of the direct torque control and the model reference adaptive system are presented. Simulations are used to verify the assumptions and choose the suitable direct torque control method and model reference adaptive system speed observer. A description of laboratory workplace is given. Fuzzy logic is applied in the speed controller of control structures. Verification the application of the model reference adaptive system in sensorless induction motor drive with direct torque control is experimentally carried out in various conditions. Advantages and disadvantages of the direct torque control methods and the model reference adaptive system speed observer, and the role of fuzzy logic are concluded.

Abstract:

The PhD thesis describes model reference adaptive system speed observers for a speed sensorless induction motor drive with direct torque control methods. A mathematical description of components in control system such as induction motor, frequency converter is given. Theoretical analyses and assumptions of the direct torque control and the model reference adaptive system are presented. Simulations are used to verify the assumptions and choose the suitable direct torque control method and model reference adaptive system speed observer. A description of laboratory workplace is given. Fuzzy logic is applied in the speed controller of control structures. Verification the application of the model reference adaptive system in sensorless induction motor drive with direct torque control is experimentally carried out in various conditions. Advantages and disadvantages of the direct torque control methods and the model reference adaptive system speed observer, and the role of fuzzy logic are concluded.

Klíčová slova

induction motor drive, direct torque control, pulse-width modulator, sensorless control, model reference adaptive system, fuzzy logic

Keywords

induction motor drive, direct torque control, pulse-width modulator, sensorless control, model reference adaptive system, fuzzy logic

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 2. 11. 2017

Obhajoba závěrečné práce

• Obhajoba proběhla 7. 12. 2017
• Vedoucí: Pavel Brandštetter
• Oponent: Petr Palacký, Jiří Lettl, Pavel Hlisnikovský

VŠB - Technická univerzita Ostrava

Fakulta elektrotechniky a informatiky

Doktorský studijní program / obor:
Elektrotechnika / Elektrické stroje, přístroje a pohony