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Register a new userPower Flow Analyze for Wind-Farm which using Induction Generator Technique (WTIG) via Computer Programs
تحليل سريان الاستطاعة في مزرعة ريحية تستخدم تقنية المولدات التحريضية (WTIG) باستخدام البرامج الحاسوبية
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في هذا البحث قمنا باجراء نموذج عن كيفية نمذجة المزارع الريحية باستخدام برنامج ETAB, و قد استخدمنا تقنية المولد التحريضي (WTIG)، و من خلال النتائج تبين لنا ان هذه الطريقة هي الأفضل من ناحية تخفيض الضياعات و التكاليف.
In this research we give a pattern that explain how to simulate the wind farms via Etab. We use induction generator technique (WTIG). We can see through results that this method is the best way in reducing the power losses and building-cost.
References used
Simoes,G2006-Renewable Energy Systems Design and Analysis with Induction Generators.CRC press,358p
John F. Walker and Nicholas Jenkins,1997-Wind Energy Technology.John Wiley & Sons
Stephen J. Chapman. 1999-Electric Machinery Fundamentals, McGraw-hill, Inc
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This paper deals with the performance study of the self-excited
induction generator when driven by wind turbine for producing
electrical energy. This was done by modeling both the induction
generator and the wind turbine using the Matlab program,
and
depending on the general theory of electrical machines. method for
this system by studying together the mechanical characteristics of
the wind turbine and operating characteristics of the induction
generator.
Power Flow control is very important procedure when renewable
sources are connected to electric grid. Furthermore, Most common
topologies of grid tied distributed generation have inductor attached
to power converters.
In this article, the role of
inductors linking between power
converters and electric grid is analyzed. Values of these inductors
can affect largely the value of Power flow (Active and Reactive
power) in both sides, while phase angle between voltage of
terminals determines the direction of power flow.
This paper proposes MATLAB/SIMULINK models to study this
impact, for different operation conditions (four quadrants I-V
curves). Two methods of coils calculation are applied, in order to
design the best value calculated in the proposed
MATLAB/SIMULINK models.
This paper treats the issue of wind energy storage, mechanically, using the flywheel
device. We control the speed of the wind turbine and the flywheel by means of traditional
PID controllers. These controllers are designed depending on the system m
odel and its
parameters. Speed control is achieved by electromagnetic rotor flux orientation as called
vector control. Speed reference value of the wind turbine will be generated in order to track
the maximum power point. The flywheel reference speed is generated based on a second
order filter of power which is considered as a new contribution in this field of research.
Frequency converters are not modeled but we only consider the control strategy. The
results of modeling and simulation in Matlab satisfy the power smoothing issue and reflect
the importance of this study.
It is the automatic control engineering knowledge forum, as it
should monitor and control the variables that interact in all
industrial processes to perform functions equipment installations
constructed for her. The automatic control system techno
logy has a
big role in easing the burden of daily life, and make them more
luxury. automatic control applications in most appliances, such as:
air conditioning and stoves, washing machines, etc.Automated
control concepts has been used in various areas of knowledge such
as biology, economics, sociology, medicine and education .
reliance on new and renewable sources of energy has grown in order to obtain
electric power without the use of traditional fossil fuel sources. And thus solve
the problems of the global energy crisis and also maintain a clean environment,
through
the fight against the dangers of global warming and its negative results
Wind power is considered as one of the most important of these alternative
energies.
We will work in this research in order to be able to control wind turbine with
variable speed through pitch angle control in order to organize power and
control the rotational speed in order to make the power ideal.
Where we will be using a fuzzy controller to control pitch angle instead of the
traditional controllers, which is expected to improve system response and
provide ease in the application and modification and reduction in the cost.
By reference study we came to the result showing that most previous studies in
advanced wind energy systems have addressed to control wind turbine using
conventional controllers from PI or PID type. Show we have the problem of the
need to know the exact mathematical model of the system. Where traditional
controllers of wind turbines that operate at variable speed are based on
mathematical models which may be complex and non-linear and neglect often
physical phenomena, for example, magnetic saturation which leads to
complexity in the calculation and unexpected performance of the driven system.
The proposed research aims to provide a complete study through modeling and
simulation using the Matlab about the use of fuzzy controller to control the
wind turbine where traditional controllers of type PI will be designed to control
the pitch angle and to control the rotational speed and fuzzy PI controllers to
control the pitch angle. Results will be get and discussed and conclusion will be
extracted from them.
Research Results showed that the fuzzy control improves transient state
behavior, but the steady-state behavior is better controlled when we use PI
controller. So and based on the result we got, the PI controller can't be replaced
actually with the fuzzy controller.
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