The document describes a solar-powered electric bicycle called the Smart Cycle. It has the following key features: - It is powered by a battery that is charged by solar panels as well as a dynamo for backup charging. - It can travel up to 15-20 mph using a permanent magnet DC motor powered by the battery. - CAD drawings were created to design the frame and show placements of the solar panels, battery, and other components. - The battery is a 12V 10AH lead-acid type for its life and efficiency. The motor is a 400W 24V PMDC motor for its starting torque.

1. SMART CYCLESMART CYCLE ––
A Solar Driven CycleA Solar Driven Cycle
Presented by:- Amandeep Singh (08ME312)Presented by:- Amandeep Singh (08ME312)
Meenakshi Singh (08ME341)Meenakshi Singh (08ME341)
Abhishek Thakur (08ME304)Abhishek Thakur (08ME304)
Aman Narwal (08ME309)Aman Narwal (08ME309)

2. Aim and Objective of the Project
Aim:
Design and Fabrication of the SMART CYCLE (A solar driven
electric bicycle).
Objectives:
To design a solar bicycle on Auto Cad 3d
To fabricate the bicycle using different components
To test the vehicle under different cicumstances

3. INTRODUCTION
 Solar bicycle also known as solar e-bike is an electric bicycleSolar bicycle also known as solar e-bike is an electric bicycle
with an electric motor which is driven by the use of power fromwith an electric motor which is driven by the use of power from
the battery which is being charged using solar energy by solarthe battery which is being charged using solar energy by solar
panels.panels.
 Photovoltaic (PV) cells contained in solar panels convert thePhotovoltaic (PV) cells contained in solar panels convert the
sun's energy directly into electric energy are used.sun's energy directly into electric energy are used.
 It also uses a dynamo to charge the battery of the vehicle.It also uses a dynamo to charge the battery of the vehicle.
 They can travel up to 15 to 20 miles per hour (24 to 32 km/h).They can travel up to 15 to 20 miles per hour (24 to 32 km/h).

4. Working Principle
• The Solar Bike will work on theThe Solar Bike will work on the
principle of “The Photovoltaicprinciple of “The Photovoltaic
Effect”Effect”
• The bicycle will consists of aThe bicycle will consists of a
battery which will be charged bybattery which will be charged by
the solar panels.the solar panels.
• Another source of charging theAnother source of charging the
battery is the use of a dynamo inbattery is the use of a dynamo in
case of cloudy, rainy days andcase of cloudy, rainy days and
during night time.during night time.

5. CAD DRAWINGS
The further growth in our project is in the field of designing the
basic structure of our product. These drawings define the location
of the solar panels to be attached, different mountings and battery
location.
All these drawings are drawn using Auto Cad 2007(AutoCAD is
a CAD software application for 2D and 3D design and drafting,
developed and sold by Autodesk, Inc.)
Following views are presented in these drawings:-
Isometric View
Front View
Top View
Side View

6. Isometric View

7. Front View

8. Top View

9. Side View

10. Analysis
After the completion of the CAD Drawings further step
is to analyze the use of different components such as
the
“Battery” to be used (its rating),
“Solar-Panels” (Number and type),
“Motor” (Type and power).

11. Battery:
Batteries used in our bicycle is lead acid type
because they have good life, requires less
maintenance and have high efficiency.
Rating of Batteries :- 12 V 10 AH

12. Motor:
It is based on the principle that when a current-carrying
conductor is placed in a magnetic field, it experiences a
mechanical force whose direction is given by Fleming's
Left-hand rule and whose magnitude is given by
 Force, F = B I l newton
Where B - magnetic field in weber/m2
,
I - current in amperes,
l - length of the coil in meter.
The force, current and the magnetic field are all in
different directions.

13. PERMANENT MAGNET DC MOTOR
(PMDC):
Due to starting torque and less field losses PMDC is
preferred over other DC motors.
Specification of motor – 400 W 24 V motor

14. SOLAR PANELS:
The solar cell works in three steps:
Photons in sunlight hit the solar panel and are absorbed
by semiconducting materials, such as silicon.
Electrons (negatively charged) are knocked loose from
their atoms, causing an electric potential difference.
Current starts flowing through the material to cancel the
potential and this electricity is captured. Due to the
special composition of solar cells, the electrons are only
allowed to move in a single direction.
An array of solar cells converts solar energy into a
usable amount of direct current (DC) electricity.

15. Formula for calculating efficiency of a solar
cell?
Efficiency = energy out as electricity / energy in as light
Example-At full sun, there is approximately 1000W/m2
Now, if the Wattage is 3.86 W , then the efficiency
would be 3.86 divided by 0.24336, = 15.86%

16. It is indeed a small drop in ocean toIt is indeed a small drop in ocean to
decrease the global warming.decrease the global warming.