الفهرس 
Renewable Energy ResourcesOnly 14 pages are availabe for public view
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Abstract
Self-excited induction generators (SEIG) have been widely used
in electric power generation during the last decades especially in isolated
areas as a part of wind energy systems. However, the main drawback
with the usage of SEIG in electric power generation is the difficulty of
adjusting its terminal voltage and frequency at fixed pre-determined
required values.
This thesis deals with the modeling, simulation and control of a
stand-alone SEIG scheme. The system consists of an induction generator,
a capacitor bank for self-excitation, and linear and non-linear loads. The
non-linear load consists of a three-phase uncontrolled bridge rectifier, a
DC filter, and a linear load or an inverter connected to a three-phase
balanced resistive load. This is a typical system for windmill
applications.
The system is modeled and simulated when either the speed or
the input torque is considered constant. The performance of the system
under study is determined for no-load and loading conditions. The results
demonstrate the effect of various parameters such as speed, excitation
capacitance, and load constants (R, L) on the transient and steady-state
generated voltages, frequency, and output power.