Mechanical to Electrical systems

HOW WIND TURBINES GENERATE ELECTRICITY

there all composed of the same 3 basic parts.

A. Rotor Blades

B. Shaft

C. Generator

Basic Parts

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.

B. Shaft

Its main purpose is to transfer the rotational mechanical energy of

the rotor blades to the generator.

Basic Parts

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.

Basic Processes

B. Converting to Electricity

A. Capturing Wind Energy

Basic ProcessesA. Capturing Wind Energy

Wind energy is captured using the wind turbine’s rotor blades.

Basic ProcessesA. Capturing Wind Energy

When wind passes through the blades, two aerodynamic forces are at work.

Basic ProcessesA. Capturing Wind Energy

LIFT

DRAG

Rotor Blade

Basic ProcessesA. Capturing Wind EnergyThese 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)

Basic ProcessesB. Converting to Electricity

Which makes the generator

produce electricity!

the shaft also turns.

When the rotor blades turn,

Basic ProcessesB. Converting to Electricity

In this process, the rotational mechanical energy of the shaft is

converted to electricity by the generator.

CreditsSlide # Source

1 http://www.flickr.com/photos/hddod/141018304/

9http://www.flickr.com/photos/stuartwildlife/3451992116/

http://www.flickr.com/photos/question_everything/4320484939/http://www.flickr.com/photos/krisgriffon/23263069/

29http://www.flickr.com/photos/ali_pk/2349831732/30

31

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