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
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