JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course objectives: to prepare the students to

• understand the fundamentals of wind energy and its conversion system
• learn gear coupled generator wind turbine components
• learn modern wind turbine control & monitoring.

Course Outcomes

Student will be able to:

• Know the energy conversion techniques in wind energy
• Learn about wind turbine components and their constructions.
• Understand the modern wind turbine control & monitoring.

UNIT - I

Wind Energy Fundamentals & Wind Measurements: Wind Energy Basics, Wind Speeds and scales, Terrain, Roughness, Wind Mechanics, Power Content, Class of wind turbines, Atmospheric Boundary Layers, Turbulence. Instrumentation for wind measurements, Wind data analysis, tabulation, Wind resource estimation, Betz’s Limit, Turbulence Analysis.

UNIT - II

Aerodynamics Theory & Wind Turbine Types: Airfoil terminology, Blade element theory, Blade design, Rotor performance and dynamics, Balancing technique (Rotor & Blade), Types of loads; Sources of loads Vertical Axis Type, Horizontal Axis, Constant Speed Constant Frequency, Variable speed Variable Frequency, Up Wind, Down Wind, Stall Control, Pitch Control, Gear Coupled Generator type, Direct Generator Drive /PMG/Rotor Excited Sync Generator.

UNIT - III

Gear Coupled Generator Wind Turbine Components And Their Construction: Electronics Sensors/Encoder/Resolvers, Wind Measurement : Anemometer & Wind Vane, Grid Synchronisation System, Soft Starter, Switchgear[ACB/VCB], Transformer, Cables and assembly, Compensation Panel, Programmable Logic Control, UPS, Yaw & Pitch System : AC Drives, Safety Chain Circuits, Generator Rotor Resistor controller (Flexi Slip), Differential Protection Relay for Generator, Battery/Super Capacitor Charger & Batteries/ Super Capacitor for Pitch System, Transient Suppressor/Lightning Arrestors, Oscillation & Vibration sensing.

UNIT - IV

Direct Rotor Coupled Generator (Multipole) [Variable Speed Variable Freq.]: Excited Rotor Synch, Generator/PMG Generator, Control Rectifier, Capacitor Banks, Step Up/Boost Converter (DC- DC Step Up), Grid Tied Inverter, Power Management, Grid Monitoring Unit (Voltage and Current), Transformer, Safety Chain Circuits

UNIT - V

Modern Wind Turbine Control & Monitoring System: Details of Pitch System & Control Algorithms, Protections used & Safety Consideration in Wind turbines, Wind Turbine Monitoring with Error codes, SCADA & Databases: Remote Monitoring and Generation Reports, Operation & Maintenance for Product Life Cycle, Balancing technique (Rotor & Blade), FACTS control & LVRT & New trends for new Grid Codes.

TEXT BOOKS:

• 1. Renewable Energy Sources, Twidell J.W. and Weir A., EFN Spon Ltd., 1983. R19 M.TECH M. TECH. PEES
• 2. Renewable Energy, Power for a Sustainable Future, Godfrey Boyle Oxford University Press, 1996.

REFERENCES BOOKS:

• 1. C-Wet: Wind Energy Resources Survey in India VI.
• 2. Solar Engineering of Thermal Processes, Duffie A. and Beckmann W. A., John Wiley, 1991.
• 3. Wind Energy Conversion Systems, Freris L.L., Prentice Hall, 1990.
• 4. Wind Energy Systems, John D Sorensen and Jens N Sorensen, Woodhead Publishing Ltd, 2011.
• 5. Stand – alone and Hybrid Wind Energy Systems, Kaldellis J.K., CRC Press, 2010.
• 6. Wind Energy Systems, Mario Garcia –Sanz, Constantine H. Houpis, CRC Press 2012.
• 7. Wind Turbine Technology: Fundamental concepts of Wind Turbine Engineering, Spera D.A., ASME Press, 1994.
• 8. NPTEL online course, Non-Conventional Wind Energy Systems, https://www.youtube.com/playlist?list=PL3QMEfkolRFbGhXveCE7RFDBgY0_gRxkh
• 9. NPTEL online course, Energy Resouces and Technology, https://www.youtube.com/playlist?list=PLB8D62518BDBD6B9C R19 M.TECH M. TECH. PEES M. TECH. I Year II Sem. (PEES)