1.
SEMINAR
ON
FOOTSTEP POWER
GENERATION
SYSTEM
AKHIL P V
EEE
NO : 8

2.
CONTENT
 Introduction
 Piezoelectric
material
 Piezoelectric effect
 Working
 Principle
 Block diagram
 Footstep
arrangement
 Battery
 Inverter
 Advantage
 Disadvantage
 Application
 Conclusion
 References

3.
INTRODUCTION
o We are generating electrical power non-
conventional method by simply walking or
running on the foot step
 Non conventional energy using foot step is
converting mechanical energy in to the
electrical energy
 The basic principle behind this system is
piezoelectric effect

4.
PIEZOELECTRIC MATERIAL
 certain materials have the ability to build up an
electrical charge from having pressure and strain
applied to them. Piezoelectricity refers to the ability
of some materials to generate an electric potential
in response to applied pressure such materials are
called piezoelectric material
 Eg:
Quartz
Belemnite
Gallium orthophosphate
Tourmaline

5.
PIEZOELECTRIC EFFECT
Piezoelectric Effect is the ability of
certain materials to generate an
electric charge in response to applied
mechanical stress.

6.
WORKING
 The piezoelectric material converts the pressure
applied to it into electrical energy.
 The source of pressure can be either from the
weight of the moving vehicles or from the weight of
the people walking over it.
 The output of the piezoelectric material is not a
steady one. So a bridge circuit is used to convert
this variable voltage into a linear one.
 Again an AC ripple filter is used to filter out any
further fluctuations in the output.
 The output dc voltage is then stored in a
rechargeable battery.
 The inverter is converts the DC into AC

7.
.
 A force is applied along a neutral axis of
the piezoelectric crystal and the charges
are generated along the perpendicular to
the line of force
 The amount of charge depends up on
the
* Geometrical dimensions of the
respective piezoelectric element
* The pressure applied

8.
BLOCK DIAGRAM
Footstep
arrangement
Piezoelectric
transducers
array
Unidirectional
current
controller
AC ripple filter
Rechargeable
battery
Inverter
load

9.
FOOTSTEP ARRANGEMENT

10.
BATTERY
 Lead- Acid Battery
 High quality and reliability
 Long life
 Maintenance free

11.
INVERTER
 Inverter is an electric device that coverts direct
current DC in to alternating current AC
 The converted AC can be at any required voltage
and frequency with the use of appropriate
transformers , switching and control circuits

12.
ADVANTAGES
 Non conventional method, renewable energy
source
 Eco friendly
 Reliable
 Self generating – no external power required
 Less maintenance cost
 Ultra low noise
 An alternative way of power generation

13.
DISADVANTAGES
 Initial cost is too high
 Implementation is difficult
 Less maintenance , but difficult

14.
APPLICATION
Footstep power generation can be
used in emergency power failure
situations
It can be used for Agricultural ,Home
applications , Street lighting and etc…
Metros and Rural applications

15.
CONCLUSION
Footstep power generation system is
economical, affordable energy solution
to common people
It can be used for many application in
rural areas where power availability is
less or totally absence

16.
REFERENCES
 www.google.com
 www.wikipedia.com
 www.ieee.com
 www.slideshare.com
 www.powershow.com
 www.pptplanet.com

17.
THANK
YOU