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Grid-connected variable speed generator application with doubly-fed induction machine

Demirok, Erhan (2007) Grid-connected variable speed generator application with doubly-fed induction machine. [Thesis]

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Official URL: http://risc01.sabanciuniv.edu/record=b1169195 (Table of Contents)

Abstract

The thesis deals with power flow between grid and generator. Possible grid connection concepts are described and the topology of variable speed constant frequency with doubly-fed induction machine is emphasized among different topologies. The dynamical model and power flow analysis are realized to investigate the concept. In literature, the most preferred and implemented control method of doubly-fed induction generator, stator flux-oriented active-reactive power decoupling, is studied, simulated in the thesis and important drawbacks of the method are underlined. A nonlinear controller with disturbance observer is implemented to eliminate the drawbacks of flux-oriented based decoupling of active -reactive power. The proposed method brings in orientation-free and simple implementation to the concept. Stability analysis must be realized to satisfy exponential stability for controller performance and boundness of rotor voltages is provided during simulations.

Item Type:Thesis
Uncontrolled Keywords:Active and reactive power decoupling. -- Generator. --Renewable energy. -- Disturbance observer. -- Doubly-fed induction machine. -- Variable speed operation. -- Aktif ve reaktif güç ayrıştırma. -- Generatör. -- Yenilenebilir enerji. -- Bozucu etken gözlemleyici. -- Bilezikli asenkron makina. -- Değişken hızda çalışma
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:8494
Deposited By:IC-Cataloging
Deposited On:14 May 2008 16:35
Last Modified:25 Dec 2008 14:17

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