Document details

Speed control of induction machine based on direct torque control method

Author(s): Mascarenhas, Manuel Maria Brás Pereira

Date: 2013

Persistent ID: http://hdl.handle.net/10362/9957

Origin: Repositório Institucional da UNL

Subject(s): Induction machine; Multi-level inverter; Neutral point clamped; Direct torque control; Space vector modulation


Description

Multi-level converters have been receiving attention in the recent years and have been proposed as the best choice in a wide variety of medium voltage applications. They enable a commutation at substantially reduced voltages and an improved harmonic spectrum without a series connection of devices, which is the main advantage of a multi-level structure. The use of multi-level inverters contributes to the performances amelioration of the induction machine control. In fact, the use of three level inverter (or multilevel inverter) associated with DTC control can contribute to more reducing harmonics and the ripple torque and to have a high level of output voltage. A variation of DTC-SVM with a three level neutral point clamped inverter is proposed and discussed in the literature. The goal of this project is to study, evaluate and compare the DTC and the proposed DTC-SVM technique when applied to induction machines through simulations. The simulations were carried out using MATLAB/ SIMULINK simulation package. Evaluation was made based on the drive performance, which includes dynamic torque and flux responses, feasibility and the complexity of the systems.

Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores

Document Type Master thesis
Language English
Advisor(s) Valtchev, Stanimir
Contributor(s) Mascarenhas, Manuel Maria Brás Pereira
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