18-12-2010, 08:45 PM
A NEW INTERCONNECTING METHOD FOR WIND TURBINE/GENERATOR IN A WIND FARM
Presented by:
Aswin Das
EEE
College Of Engineering, Trivandrum
Presented by:
Aswin Das
EEE
College Of Engineering, Trivandrum
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CONTENTS
Objectives
Introduction
Selection of site
New method
How system works
Basic equations
Measures against halt
Operating methods
Control strategies
Basic characteristics
OBJECTIVES
A new interconnecting method for wind turbine/generator is proposed.
Through this method electrical energy of high quality with high reliability can be produced.
INTRODUCTION
Major components.
Advantages
Disadvantages of existing methods.
MAJOR COMPONENTS
ADVATAGES
Wind power systems are non polluting , so no adverse effect on environment.
Avoid fuel provision and transport.
On a small scale up to a few kilowatt system is less costly.
DISADVANTAGES OF EXISTING METHODS
Doubly fed induction generator system(DFIG) is more complicated.
Low voltage ride through characteristics are poor.
SELECTION OF SITE
High annual average wind speed.
Wind structure of the proposed site.
Altitude of the proposed site.
Nearness of site to local centers/users.
NEW METHOD
HOW SYSTEM WORKS
Output of AC generator are rectified.
Rectified outputs are integrated in DC link.
The resultant output is converted again with thyristor inverter.
Optimum site can be selected with a long distance DC transmission line.
BASIC EQUATIONS OF THE SYSTEM
MEASURES AGAINST SYSTEM HALT
Short circuit the corresponding converter by means of giving signals to all the gates of the thyristors.
Connect a diode in parallel with each thyristor converter.
OPERATING METHODS
CONTROL STRATEGIES
CONTROL STRATEGIES
Basic Characteristics for Case of Two Wind Turbine Generators
is set to zero.
constant
changes in the range of 0-11m/s.
CONCLUSION
Only one externally commutated thyristor inverter is used.
High quality output power with high quality.
Optimum site for wind turbines can be readily selected.
Dc transmission system is entirely appropriate for the proposed system.
REEFERENCES
[1] Shoji Nishikata, Fujio Tatstuta, “A New Interconnecting Method for Wind Turbine/Generators in a Wind Farm and Basic Performances of the Integrated System,” IEEE Transactions on Industrial Electronics,vol.57,no:2,February 2010.
[2] Shoji Nishikata, Fujio Tatstuta, “A New Interconnecting Method for Wind Turbine/Generators in a Wind Farm and Basic Performances of the Integrated System,” in Proc.13th international Power Electronics and Motion Control Conference, Poznan Poland, Sep 1-3,2008,pp 2342-2348.
[3]M.P Ramesh, “Grid Interconnection of Wind Turbines”, Presentation to GERC Ahmedabad,7 February 2009.
[4]Thomas.A.Wind, ”Distributed wind generation and interconnection”, Transmission interconnection and integrating issues, May 19,2010.
[5] C. Ghita, A.– I. Chirila, I. – D. Deaconu, and D. I.
Ilina, “The magnetizing field of a linear generator
used to obtain electrical energy from waves
Energy”, in Proc. ICREPQ’07, pp. 207-208.
[6] H. James Green, Thomas W, Wind Utility Consulting,” The IEEE Grid Interconnections Standard: How Will it Affect
Wind Power?”, Presented at AWEAs Wind Power 2000 Conference Palm Springs, California April 30May 4, 2000
