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Energy Generation and Distribution

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Title: Energy Generation and Distribution


1
How Does a Bicycle Generator Work?
  • Energy Generation and Distribution

2
A bicycle generator uses human power to generate
electricity
3
A bicycle generator uses human power to generate
electricity But how?
4
Conservation of Energy
Since energy is conserved, the chemical energy in
the persons body is converted into mechanical
energy in the bicycle, then electrical energy in
the motor.
5
Motor
Armature
  • Ampere's law states that an electric charge
    passing through a looped circuit produces a
    magnetic field.

Permanent Magnets
  • Interaction of the internal electromagnet with a
    surrounding fixed magnet produces the attractive
    and repulsive force associated with the poles of
    magnets and causes rotation.

6
Motor
  • A motor uses electrical energy to create
    rotational motion, but the bicycle generator uses
    mechanical energy and converts it into
    electrical energy.
  • The motor can act as a generator if the persons
    pedaling overcomes the electromotive force of the
    battery.

7
Diode
Anode
Cathode
  • A diode allows current to flow in only one
    direction (from anode to cathode). Without it,
    the motor would cause the tire to spin instead of
    the other way around.

8
Generator
  • Michael Faraday discovered that if an object or
    material that conducts electricity passes through
    a magnetic field, then an electric current will
    begin to flow through that material.
  • In other words, the spinning tire causes the
    motor shaft to rotate, which produces a current
    through the leads.

Shaft
Leads
9
Battery
  • The electricity generated could be used to charge
    a battery and be stored, or could be used
    directly to power appliances.

10
Inverter
  • But there are two types of electric current
    direct current (DC) and alternating current (AC).
  • So we cant connect appliances directly to the
    generator unless we use an inverter.

11
Inverter
  • A car battery provides direct current for all the
    electrical components.
  • Our homes, on the other hand, are powered by
    alternating current electricity.

12
  • Once the setup is complete, it can be used to
    power low-wattage household appliances, like
    charging a cell phone.
  • For a challenge, try making a human-powered
    smoothie!

13
Sources
Nicholson, Joseph. "How Does an Electric Motor
Work?." ehow.com. Web. 14 June 2010.
lthttp//www.ehow.com/how_4569196_electric-motor-wo
rk.htmlgt. Orwell, Mark. "How Do Electric
Generators Work?." ehow.com. Web. 14 June 2010.
lthttp//www.ehow.com/how-does_4564423_electric-gen
erators-work.htmlgt. http//shop.jshopdesigns.co.uk
/shopimages/products/normal/742322_30734920.jpg ht
tp//www.istockphoto.com/file_thumbview_approve/40
33602/2/istockphoto_4033602-bike-race.jpg http//w
ww.chicagonow.com/blogs/doctors-next-door/light_bu
lb.png http//www.circuit-magic.com/sinewave.gif h
ttp//thejewishstar.files.wordpress.com/2009/06/sm
oothie.jpg http//www.markallen.com/teaching/ucsd/
147a/lectures/lecture3/5.php
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