MODELLING AND STUDY OF EXCITATION PHENOMENA IN INDUCTION GENERATORS
MODELLING AND STUDY OF EXCITATION PHENOMENA IN INDUCTION GENERATORS
No Thumbnail Available
Date
1994-03-21
Authors
ADAMU, SUNUSI SANI
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The recent energy crisis has led to renewed interest in induction generators as
sources of electrical power . This is due to certain advantages they possess.
For example, they are of simple construction ; of low cost and rugged.
Moreover, they can be easily coupled to many types of motive sources , thus
they can be utilised in rural areas of developing countries. In such situations
the reliability of the self excitation process is of paramount importance. The
survey of previous works on induction generators indicated that most of the
authors are concerned with, steady-state conditions , well after the machine
has built-up. Furthermore, there is no adequate model that could be used to
study the transient build-up stage. The aim of this work was to develop such
a model with a view to study the effect of machine parameters and other
external effects.
The machine is modelled in a quasi-stationary d-q reference frame in which
the mutual inductances are considered non-linear . The derived machine
equations are of the form already developed by other authors [40,65] for
motor operation Appropriate changes are then carried out in order to
investigate the induction generator conditions of excitation.
A computer program was then developed using PASCAL language in order to
study various excitation methods ,with a unique attempt to study the
possibility of excitation from the rotor side. The model indicated a need for
further work in the area of excitation from the rotor side. Using the results of
the simulations, suggestions are then given on how to improve the reliability
of the self-excitation process.
Description
A thesis submitted to the postgraduate school, Ahmadu Bello University, in
partial fulfillment of the requirements for the degree of:
Master of Science (Msc) Power and Machines
Department of: Electrical Engineering
Ahmadu Bello University, Zaria
Keywords
MODELLING,, STUDY,, EXCITATION,, PHENOMENA,, INDUCTION,, GENERATORS,