ON ROAD CHARGINGOF

ELECTRIC VEHICILE

Byy.varun kumarv.jayaprakash

INDUSTRIAL REVOLUTION

PROBLEMS FACING WITH FOSSIL FUELS Green House effectIncrease in oil pricesDepletion of ozone layerAir pollution

To over come this problem Electric vehicles

What next ?

On road charging of electric vehicles

The AC alternator can be used to convert mechanical energy to electrical energy . Thus the power generated can be used for charging the batteries while the car is in motion.

The principle of this idea is to use an alternator that is connected to the shaft of the rear wheels. When the shaft of the alternator is rotating that in turn generates the electrical energy used for charging the batteries.Switching system connected for batteries and motor.

Principle :

USING AC ALTERNATOR

DESIGN OF ELECTRIC VEHICLE USING ALTERNATOR

Simplicity of the concept and design.Applicable and economically viable.It can travel to long distances.There is no problem of charging hours.Reduction of fossil fuel usage.

Advantages

DisadvantagesWe should choose appropriate components that match the different size of the vehicles

The term “Energy Harvesting” refers to the generation of energy from sources such as vibration ,ambient temperature(or) air flow.“Piezoelectric Effect” is the method laid the foundation of piezoelectric harvesters.PrinciplePiezoelectric materials generate electrical energy(at electrical axis) when subjected to mechanical strain(at mechanical axis).•Note : It is not implemented practically i.e, it is just a model that it can also create electrical energy with in electric vehicle body.

Piezoelectric harvesters

Arrangement of piezoelectric materials

Wireless Power Transfer (WPT)

Electric power is transferred to the vehicle by magnetic coupling between a primary coil placed in the sand/epoxy layer of the road and a secondary coil within the car body

Power flow diagram

Electric re-charging line

Overall view of wireless power transfer of electric vehicles

This was implemented by “kaist” company in “south korea”

Power transfer efficiency for this bus is 85%

AC ALTERNATORS

WPT

PIEZOELECTRIC HARVESTERS

Simplicity of the system(1-5,5 is simplest)

5 3 2

Cost of implementation(1-5,5 is lowest cost)

1 1 5

Spatial Efficiency(1-5,5 is most efficient)

1 3 5

Practical feasibility(1-5,5 is most practical)

4 5 1

Total Score(/20) 13 12 13

EVALUATION