الفهرس 
CHAPTER (1): INTROUCTONOnly 14 pages are availabe for public view
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Abstract
Squirrel cage self-excited induction generator (SEIG) has several advantages
such as low cost, robustness, low maintenance …… etc. Therefore, it is extensively
used in wind farms. This thesis presents the performance analysis of SEIG when
feeding isolated loads (stand-alone generator). SEIG is simulated using MATLAB
SIMULINK and its performance is studied. The performance of SEIG is studied
considering different conditions such as starting, step change in load and step change
in speed. The obtained results confirm the published work that shows terminal voltage
variation with loading.
Therefore, this thesis presents a voltage control of a stand-alone self-excited
induction generator. The voltage control is performed using a static VAR compensator
(SVC). A low pass filter is used with SVC to reduce the harmonic content in voltage
waveforms. This is validated by simulating a system consisting of a stand-alone
induction generator, fixed load, variable load, and SVC using MATLAB SIMULINK.
A proportional integral (PI) controller with fixed gains is used with the control system
with using a low pass filter and without the filter. The results are obtained in both
cases.
Finally, the use of low pass filter with SVC gives an improved performance as
compared to the system without the low pass filter.
This present work is carried out through two stages as follows:
Stage 1
Steady state and transient mathematical model of SEIG has been developed and
Performed in MATLAB program to investigate the generator performance
characteristics. Also, an experimental setup for SEIG control system has been established and tested to confirm the simulation results. When a comparison is held,
good agreement between simulation and experimental results is obtained.
Stage 2
Voltage control of SEIG based on Static Var Compensator (SVC) has been performed
in MATLAB program, this is to predict the generator performance characteristics in
addition, the experimental setup for SVC has been built to regulate the voltage.