Universiti Teknologi Malaysia Institutional Repository

Simulation of MRAS based speed sensorless estimation techniques for induction machine drives using matlab/simulink

Haron, Ahmad Razani (2006) Simulation of MRAS based speed sensorless estimation techniques for induction machine drives using matlab/simulink. Masters thesis, Universiti Teknologi Malaysia, Faculty of Electrical Engineering.

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Abstract

This thesis is about the study of the speed sensorless estimation techniques of the induction machine drives. Large variations of techniques are available depending on the estimation requirement. MRAS based speed sensorless estimation is one of the most versatile techniques available due to its good performance and straightforward stability approach. This technique uses two different models (the reference model and the adjustable model) which has made the speed estimation a reliable scheme especially when the motor parameters are poorly known or having large variations. Rotor flux based MRAS (RF-MRAS) and back e.m.f based MRAS (BEMF-MRAS) are two variants of MRAS based speed estimation techniques which differ in terms of quantity used but share almost the same structure realization. These facts give a good platform for comparison. The tracking capability and sensitivity to parameters variation are two key criteria of comparison in assessing the performance of the estimators. Implemented in the direct torque control (DTC) structure and simulated in the MATLAB/Simulink, the results obtained justify the dynamic performance of the RF-MRAS and BEMF-MRAS estimators

Item Type:Thesis (Masters)
Additional Information:Thesis (Master of Engineering (Electrical - Power)) - Universiti Teknologi Malaysia, 2006
Uncontrolled Keywords:Speed sensorless estimation techniques; MRAS; MATLAB/Simulink
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:1274
Deposited By: Ms Zalinda Shuratman
Deposited On:02 Mar 2007 05:42
Last Modified:03 Jul 2012 03:27

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