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)

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 3dTo fabricate the bicycle using different componentsTo test the vehicle under different cicumstances

INTRODUCTION

Solar bicycle also known as solar e-bike is an electric bicycle Solar bicycle also known as solar e-bike is an electric bicycle with an electric motor which is driven by the use of power from with an electric motor which is driven by the use of power from the battery which is being charged using solar energy by solar the battery which is being charged using solar energy by solar panels. panels.

Photovoltaic (PV) cells contained in solar panels convert the Photovoltaic (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).

Working Principle• The Solar Bike will work on the The Solar Bike will work on the

principle of “The Photovoltaic principle of “The Photovoltaic Effect”Effect”

• The bicycle will consists of a The bicycle will consists of a battery which will be charged by battery which will be charged by the solar panels.the solar panels.

• Another source of charging the Another source of charging the battery is the use of a dynamo in battery is the use of a dynamo in case of cloudy, rainy days and case of cloudy, rainy days and during night time.during night time.

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 ViewFront ViewTop ViewSide View

Isometric View

Front View

Top View

Side View

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).

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

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. 

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

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.

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%

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