Concept of wind turbine in car

1. TEAM DRIFT
GROUP 7
TOPIC:-1. WIND TURBINE
2. AERODYNAMICS
3. FAST CHARGING TECHNOLOGY
Sakaldev Yadav
Vinisha
Ritika Somya
Vivekanand Ojha
Nikita Sundi

2. INTRODUCTION
In modern automobile,the operations, performance and efficiency of motor
driven electric Vehicle are much better than engine driven vehicle,at the same
time electric vehicle are very much environment friendly.Still electric vehicle
are falling behind in automobiles industries due to problems of storage of
energy.So here we are sharing a little thought based on the concept of
charging the batteries of an electric vehicle when it is in motion or propelling.

3. OBJECTIVE
This may be done by using the energy of wind which is caused
by relative motion between vehicle and wind surronding
it.Wind turbine can be mounted on the body structure of the
vehicle to generate electricity in such a way that it must not
create any additional drag force upon the vehicle.We can
control this aerodynamically.

4. 1. WIND TURBINE WITH VERTICAL AXIS
PROPOSED DESIGN OF WIND TURBINE ON CAR

5. Principle of operation

6.  The wind turbine consist of bottom plate and Deflectors are assembled to form an enclosure
wherein the turbine blade rotate. The enclosure has two sections right section and left
section.
 The wind that enters into the right section of the blades at high speed and cause the
rotation of the blades in the counter clockwise direction.
 The wind that enters in the left section in deflected towards right side and enters additional
pressure on the blades thus exterts additional pressure on the blades thus reinforcing the
rotation in the counterclockwise direction.
 The front deflector prevent the wind entering into the left section of the turbine and
therefore the wind entering from left does not create any resistance to the rotation of the
turbine .Actually the front deflector deflect the wind at an angle that further push the blades
in the counterclockwise direction.
 Apart from the wind entering the turbine from the front, part of wind moving out of the
turbine will also be deflected back into the turbine with the help of rear right defector .
consequently the blades will be pushed not only from the front but also from back.This will
make the blades rotate faster(high RPM) and more power will be generated.

7. 2. WIND TURBINE WITH HORIZONTAL AXIS

9. The assembled turbine is fastened to a frame like
structure provided on the roof of the vehicle with
the inlet facing the front part of the vehicle . The
diffuser augmented wind turbine is chosen for the
design since that is most efficient wind turbine.

10. The main components of this turbine are
1. rotor,
2. main shaft,
4. main bearing coupling,
5. generator,
6. top-shroud,
7. base-shroud,
8. inlet safety guard,
9. exhaust safety guard.

11. PRINCIPLE OF OPERATION
When the vehicle start moving the opposing air stream directly in front
of the turbine passes through the turbine blades there by providing a
torque which rotate the rotor. The energy of rotor then transferred to
the generator through main shaft. The generator is electrically connect
to the charging system of vehicle .The batteries are therefore charged
continuously while the vehicle is moving.

12. CHARGING OF HEAVY ELECTRIC VEHICLE
For the charging heavy electric
vehicle like Daimler truck, buses,
XUVs we can use new concept wind
generator.

14. CALCULATION
The force required to overcome the drag = ½(air density)*drag area*(speed2)
[F=1/2* ρ* Ad*v2 ]
ρ= air density
v= relative velocity w.r.t air
Ad= drag area
Reference Area * Cd
Drag coefficient (depends on car shape)
Power lost by car due to drag
= F*v
=> P=1/2* ρ* Ad*v3
Energy lost per second =1/2* ρ* Ad*v3
Now ,
Output power turbine = Cp*Pin
Pout =Cp*Pin
Pout= ηt*ηm* ηe*Pin

16. 2019 Porsche Taycan
Ad=0.513m2
ρ(dry air)= 1.225kg/m3
Assume Porsche Taycan is moving at speed
of 120km/h or 33.33m/s
So, Power loses at this speed
= ½*ρ*A
d
*(33.33)3
=1/2*1.225*0.513*(33.33)3
=11.634KW

17. AERODYNAMICS
 Aerodynamics is the way air moves around things. It even acts on cars, since the air flows
around cars.
When ever a car is moving, practically it is swimming through an endless ocean of air.
 In this era of fast-depleting natural resources and ever-growing prices of fuel, manufacturers
are in a voyage to produce efficient vehicles with lower emissions.
 Having strict rules over emissions, we should concentrate on a different approach to reach
our current demands.
 One of the sought-after ways is to improve the of aerodynamics of velicles.
 The aerodynamics of a car has a tremendous effect on the way an automobile accelerates.

29. • Rechargeable batteries(Li-ion ) can be enhanced by introducing graphene to the capitalizing on the
material’s conductivity.
• A hybrid of Vanadium Oxide (VO2) and graphene, for example, can be used on Li-ion cathodes for
quick charge and discharge and large charge cycle durability.
• VO2 offers high energy capacity but poor electrical conductivity, which can be solved by using
graphene as a sort of a structural “backbone” on which to attach VO2 - creating a hybrid material
that has both heightened capacity and excellent conductivity.
• Another example is LFP ( Lithium Iron Phosphate) batteries. It has a lower energy density than other
Li-ion batteries but a higher power density (an indicator of of the rate at which energy can be
supplied by the battery). Enhancing LFP cathodes with graphene allowed the batteries to be
lightweight, charge much faster than Li-ion batteries and have a greater capacity than conventional
LFP batteries.
FAST CHARGING TECHNOLOGY

30. Ultracapacitors are charged and discharged via static
electricity, can charge and discharge at much greater rates
than chemical batteries and function for much longer
without deteriorating.
ultracapacitors have a very low energy density.
Certain types of batteries that are able to store a large
amount of energy, they are very large, heavy and release
energy slowly
The use of graphene in this area possibilities for energy storage, with
high charge and discharge rates and even economical affordability and
also increase this cycle.
Graphene batteries combine the advantages of both
batteries and supercapacitors
Graphene battries

31. • it could prolong battery life and reduce the cooling demands of current
battery packs.
• In theory, a battery based on the "graphene ball" material requires only 12
minutes to fully charge, researchers said.
• The battery can maintain a highly stable 60 degree Celsius temperature
• utilized for both the anode protective layer and cathode materials in
lithium-ion batteries. This ensured an increase of charging capacity,
decrease of charging time as well as stable temperatures
Graphene, a sheet of carbon atoms bound together in a honeycomb lattice pattern, is hugely recognized as a “wonder material” due to
the myriad of astonishing attributes it holds. It is a potent conductor of electrical and thermal energy, extremely lightweight chemically
inert, and flexible with a large surface area. It is also considered eco-friendly and sustainable, with unlimited possibilities for numerous
applications.

32. Graphene-based technologies, which charge in 15 seconds. These are
expected to supplement, not replace, traditional EV batteries.
• While lithium-ion batteries use graphite as an electrode, the
StoreDot battery works faster by replacing graphite with
semiconductor nanoparticles that allow ions to pass more easily
and quickly.
• Existing li-ion batteries use graphite as one electrode, into which
the lithium ions are pushed to store charge.
• the ions get congested and can turn into metal and short circuit the
battery.
• replaces graphite with semiconductor nanoparticles into which ions
can pass more quickly and easily. These nanoparticles are based on
germanium (water soluble and easier to handle in manufacturing).
• replace this electrode with silicon, a much cheaper component.
Five-minute charging times

33. REFERENCES
 http://ftexploring.com/wind-energy/wind-power-coefficient.htm
 https://en.m.wikipedia.org/wiki/Automobile_drag_coefficient
 https://www.researchgate.net/publication/302968947_Generation_of_Electrical_Power_by_a_Wind_Tu
rbine_for_Charging_Moving_Electric_Cars#:~:text=significant%20amount%20of-
,electrical%20power%20(about%203.26%20kW)%20is%20restored%20to%20the%20batteries,speed
%20of%20120%20km%2Fh.&text=by%20the%20turbine%20can%20increase,of%20the%20electric%
20car.&text=body%20of%20the%20electric%20cars
 https://youtu.be/BybfndSoIuY
 https://youtu.be/U7ZgG9p-Hz4
 https://www.powerelectronics.com/markets/automotive/article/21864016/hybrid-electric-sports-
car-to-use-micro-turbine-range-extender
 https://www.graphene-info.com/graphene-batteries
 https://youtu.be/TjGHTcrj0ik
 https://www.theceomagazine.com/business/innovation-technology/storedot-battery/