How wind turbines generate electricity
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The document summarizes the basic parts and processes of how a wind turbine generates electricity. It explains that a wind turbine is composed of three main parts: rotor blades, a shaft, and a generator. The rotor blades capture the wind's kinetic energy and turn it into mechanical energy, causing the shaft to spin and transfer this energy to the generator. The generator then converts this mechanical energy into electrical energy using electromagnetic induction.
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Wind turbines convert the kinetic energy of wind into mechanical energy using rotor blades, a shaft, and a generator. As wind passes through rotor blades, lift and drag forces cause them to spin, transferring mechanical energy to the generator via the shaft. Within the generator, this mechanical energy is converted into electrical energy via electromagnetic induction. Additional gearing is often used to increase the rotor shaft's RPM to a rate suitable for efficient electricity production. Horizontal axis wind turbines also use yaw systems to face rotor blades into the wind for maximum energy capture as wind direction changes. Braking mechanisms limit blade speed during high winds to prevent equipment damage.
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Wind turbines convert the kinetic energy of wind into mechanical energy that can be used to generate electricity. Windmills have been used since ancient times, but the first modern wind turbine for electricity generation was invented in 1887. The power output of a wind turbine depends on the swept area, wind speed, and air density, with higher rotational speeds achieved through lift-based blade designs. Horizontal axis wind turbines are more efficient but require orientation into the wind, while vertical axis turbines can harness wind from any direction but have lower power output.
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Wind turbines convert the kinetic energy of wind into mechanical energy using rotor blades, a shaft, and a generator. As wind passes through rotor blades, lift and drag forces cause them to spin, transferring mechanical energy to the generator via the shaft. Within the generator, this mechanical energy is converted into electrical energy via electromagnetic induction. Additional gearing is often used to increase the rotor shaft's RPM to a rate suitable for efficient electricity production. Horizontal axis wind turbines also use yaw systems to face rotor blades into the wind for maximum energy capture as wind direction changes. Braking mechanisms limit blade speed during high winds to prevent equipment damage.
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How wind turbines generate electricity
- 2. HOW WIND TURBINES GENERATE ELECTRICITY
- 4. there all composed of the same 3 basic parts.
- 5. A. Rotor Blades B. Shaft C. Generator Basic Parts
- 6. A. Rotor Blades When wind passes, it forces these rotor blades to turn. Basic Parts The shaft is a rod that connects the rotor blades to the generator.
- 7. B. Shaft Its main purpose is to transfer the rotational mechanical energy of the rotor blades to the generator. Basic Parts
- 8. C. Generator 3 Basic Parts Finally, the generator is a device designed to convert mechanical energy into electrical energy. It uses the principle of electromagnetic induction.
- 9. Basic Processes B. Converting to Electricity A. Capturing Wind Energy
- 10. Basic Processes A. Capturing Wind Energy Wind energy is captured using the wind turbine’s rotor blades.
- 11. Basic Processes A. Capturing Wind Energy When wind passes through the blades, two aerodynamic forces are at work.
- 12. Basic Processes A. Capturing Wind Energy
- 13. Basic Processes A. Capturing Wind Energy These two forces cause the rotor blades to turn, depending on how much force the wind exerts on them. The process converts the wind’s kinetic energy to mechanical energy (turning of rotor blades)
- 14. Basic Processes B. Converting to Electricity Which makes the generator produce electricity! the shaft also turns. When the rotor blades turn,
- 15. Basic Processes B. Converting to Electricity In this process, the rotational mechanical energy of the shaft is converted to electricity by the generator.
- 16. Credits Slide # Source 1 http://www.flickr.com/photos/hddod/141018304/ 9 http://www.flickr.com/photos/stuartwildlife/3451992116/ http://www.flickr.com/photos/question_everything/4320484939/ http://www.flickr.com/photos/krisgriffon/23263069/ 29 http://www.flickr.com/photos/ali_pk/2349831732/30 31 All other illustrations are properties of: WINDTURBINES.NET
- 17. END
Editor's Notes
- Put illustration of lift and drag on turbine blade