AATechnical Seminar Technical Seminar

OnOn SOLAR CAR SOLAR CAR

SYNERGY INSTITUTE OF ENGINEERING & TECHNOLOGY , DHENKANAL

Submitted By:-VIMAL SHARMA

Roll No.:- ME-13-62Regd. No.:- 1301230247

Submitted To:-

Dept. of Mechanical Engineering

An Overview on Solar Vehicle :-An Overview on Solar Vehicle :- Its powered by Sun’s energy.Its powered by Sun’s energy. Solar array collects the energy from the Sun and Solar array collects the energy from the Sun and

converts it into usable electrical energy.converts it into usable electrical energy. Power trackers convert it into the required voltage. Power trackers convert it into the required voltage. Motor controller sends power to the motor.Motor controller sends power to the motor. Divided into three categories :-Divided into three categories :-

• Driver Controls & Mechanical Systems Driver Controls & Mechanical Systems • Solar Array Solar Array • Body and ChassisBody and Chassis

Borealis III , racing with the Sun - A Photo taken by Colin Burnett

DRIVER CONTROLS & DRIVER CONTROLS & MECHANICAL SYSTEMS :-MECHANICAL SYSTEMS :-

Standard features :-Standard features :- SteeringSteering

• Precise steering alignment Precise steering alignment • SUNRUNNER utilized a rack and pinion system SUNRUNNER utilized a rack and pinion system

that was attached to the steering arms by means of that was attached to the steering arms by means of tie rodstie rods

BrakeBrake• Designed to move freely by eliminating brake dragDesigned to move freely by eliminating brake drag • Hydraulic disc brakes Hydraulic disc brakes • Regenerative brakingRegenerative braking

SuspensionSuspension

• front suspension- MacPhearson struts or double a arms front suspension- MacPhearson struts or double a arms • MacPhearson strut requires a large vertical clearance MacPhearson strut requires a large vertical clearance • Double A arms require less vertical clearance, but Double A arms require less vertical clearance, but

consist of more componentsconsist of more components• Rear suspensionRear suspension is a trailing arm, similar to that in is a trailing arm, similar to that in

motor cyclesmotor cycles

WheelsWheels• rolling resistance rolling resistance • three or four wheelsthree or four wheels• wheel designs are similar to those of bicycle tires wheel designs are similar to those of bicycle tires

Peak Power TrackersPeak Power Trackers

• maximize the power maximize the power • protect the batteries from being damaged by protect the batteries from being damaged by

overchargingovercharging• efficiencies above 95%efficiencies above 95%

Motor Controllers Motor Controllers • decides how much current actually reaches the motordecides how much current actually reaches the motor• up to 90% efficient up to 90% efficient

Energy Flow Diagram of a Solar Car

SOLAR ARRAYSOLAR ARRAY Its made from silicon, by Its made from silicon, by

joining an n-type and a p-joining an n-type and a p-type semiconductor.type semiconductor.

Its grouped into space grade Its grouped into space grade and terrestrial grade and terrestrial grade categories .categories .

Encapsulation Encapsulation ArrayArray SUNRUNNER'S array SUNRUNNER'S array

consisted of 14,057 razor-consisted of 14,057 razor-blade sized, 16% efficient blade sized, 16% efficient space grade cells.space grade cells.

LIMITATIONS :- LIMITATIONS :- • Only 1000 W/m2 of energy reaches the earth’s surface Only 1000 W/m2 of energy reaches the earth’s surface

in an hour of “peak sun” .in an hour of “peak sun” .• Average solar array configuration spans 8m² .Average solar array configuration spans 8m² .• Average solar cells are only able to convert 12% to Average solar cells are only able to convert 12% to

18% to electricity. 18% to electricity. • The total amount of converted energy available to a car The total amount of converted energy available to a car

consists of 700-1500 Watts . consists of 700-1500 Watts . • Three primary areas of energy loss consist of Three primary areas of energy loss consist of aerodynamic drag, braking, and rolling resistanceaerodynamic drag, braking, and rolling resistance . .

BODY & CHASSISBODY & CHASSIS

Goals :-Goals :-• Its minimizes the Its minimizes the

aerodynamic drag. aerodynamic drag. • Its maximizes the Its maximizes the

exposure to solar exposure to solar insolation .insolation .

• Its minimizes weight.Its minimizes weight.• Its maximizes safety. Its maximizes safety.

Body ShapesBody Shapes

• Unified aero body and panelUnified aero body and panel • Fixed or tilting, flat panels with a separate driver cab Fixed or tilting, flat panels with a separate driver cab • Catamaran shapeCatamaran shape• uniquely designed shape uniquely designed shape

MAIZE & BLUE and SUNRUNNER are catamaran MAIZE & BLUE and SUNRUNNER are catamaran shaped.shaped.

Chassis Chassis • space framespace frame

• welded tube structure to support the loads and the body welded tube structure to support the loads and the body • body is a lightweight, non-load bearing, composite shellbody is a lightweight, non-load bearing, composite shell

• Semi - monocoque or carbon beamSemi - monocoque or carbon beam • composite beams and bulkheads to support the loads composite beams and bulkheads to support the loads • integrated into a non-load bearing composite belly panintegrated into a non-load bearing composite belly pan

• monocoquemonocoque • uses the body structure to support the loadsuses the body structure to support the loads

MATERIALS USEDMATERIALS USED

composite materialcomposite material combination of a filler material sandwiched between combination of a filler material sandwiched between

layers of a structural material layers of a structural material structural materialsstructural materials

• Carbon fibre, Kevlar and fibre glass Carbon fibre, Kevlar and fibre glass filler materials filler materials

• Honeycomb and foam Honeycomb and foam bonded together using epoxy resinsbonded together using epoxy resins

CONCLUSION :-CONCLUSION :- Solar energy and more specifically solar Solar energy and more specifically solar

vehicle would be an amazing advancement in vehicle would be an amazing advancement in future vehicle technology. They would allow future vehicle technology. They would allow for free travel and nearly unlimited for free travel and nearly unlimited accessibility. Time will tell if all the problems accessibility. Time will tell if all the problems associated with harnessing the world’s oldest associated with harnessing the world’s oldest energy source can be dealt with. If the energy source can be dealt with. If the hurdles can be passed then for sure hurdles can be passed then for sure solar solar vehicle vehicle will be the wave of the future. will be the wave of the future.

THANK YOUTHANK YOU