SEMINAR ON

FOOTSTEP POWER GENERATION

SYSTEMAKHIL P VEEE NO : 8

CONTENT Introduction Piezoelectric

material Piezoelectric effect Working Principle Block diagram Footstep

arrangement

Battery Inverter Advantage Disadvantage Application Conclusion References

INTRODUCTIONo 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

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 orthophosphateTourmaline

PIEZOELECTRIC EFFECT

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

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

.

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

BLOCK DIAGRAM Footstep

arrangementPiezoelectric transducers

array

Unidirectional current

controller AC ripple

filter

Rechargeable battery Inverter

load

FOOTSTEP ARRANGEMENT

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

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

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

DISADVANTAGES

Initial cost is too high

Implementation is difficult

Less maintenance , but difficult

APPLICATIONFootstep 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

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

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

THANKYOU