Department of Electrical and Electronics Engineering

WIND ENERGY CONVERSION SYSTEMS
Unit - 1
INTRODUCTION
Components of WECS-WECS schemes-Power obtained from wind-simple momentumtheory-Power coefficient-Sabinins theory-Aerodynamics of Wind turbine
Unit - 2
WIND TURBINES
HAWT-VAWT-Power developed-Thrust-Efficiency-Rotor selection-Rotor designconsiderations-Tip speed ratio-No. of Blades-Blade profile-Power Regulation-yawcontrol-Pitch angle control-stall control-Schemes for maximum power extraction.
Unit - 3
FIXED SPEED SYSTEMS
Generating Systems- Constant speed constant frequency systems -Choice ofGenerators-Deciding factors-Synchronous Generator-Squirrel Cage Induction Generator-Model of Wind Speed- Model wind turbine rotor - Drive Train model-Generator model forSteady state and Transient stability analysis.
Unit - 4
VARIABLE SPEED SYSTEMS
Need of variable speed systems-Power-wind speed characteristics-Variable speedconstant frequency systems synchronous generator- DFIG- PMSG -Variable speedgenerators modeling - Variable speed variable frequency schemes.
Unit - 5
GRID CONNECTED SYSTEMS
Stand alone and Grid Connected WECS system-Grid connection Issues-Machine side &Grid side controllers-WECS in various countries
Text Books:
1. L.L.Freris Wind Energy conversion Systems, Prentice Hall, 1990 2. Ion Boldea, Variable speed generators, Taylor & Francis group, 2006. 3. E.W.Golding The generation of Electricity by wind power, Redwood burn Ltd., Trowbridge,1976. 4. S.Heir Grid Integration of WECS, Wiley 1998.