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SELF CHARGING ELECTRIC BICYCLE 1 GIRISH B KALLIHAL, 2 ZEIN UL ABEDIN K,

3 SAIFULLA LOHAR, 4 IRSHAD ALI KH

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 www.ijcrt.org © 2018 IJCRT | Volume 6, Issue 2 April 2018 | ISSN: 2320-2882

SELF CHARGING ELECTRIC BICYCLE

1
GIRISH B KALLIHAL, 2ZEIN UL ABEDIN K, 3SAIFULLA LOHAR, 4IRSHAD ALI KH
5
MUZAFFAR AHAMED G
1
ASSISTANT PROFESSOR, 2,3,4,5STUDENTS
DEPARTMENT OF MECHANICAL ENGINEERING,
S T J Institute of Technology, RANEBENNUR, INDIA

Abstract: In this paper, a traction system useful for an autonomous Electric Vehicle of individual use is described. The developed
system is constituted in a first approach by two different power sources: one is constituted by batteries and the other by the dynamo.
This paper describes a technical solution joining and accomplishing the usage of two energy storage systems in the same traction
system. In the developed system, the dynamo run as element that store energy temporarily and that can be used to retrieve energy.
Starting from the functional characteristics of typical electrical vehicles and characterization of a typical routing profile, the energy
consumption is obtained. In order to characterize and design the system, this is described in detail, namely the battery, the dynamo,
the power converters and the implemented strategy of control. According to the obtained results, a control strategy that allows an
effective management of the stored energy in the system regarding the vehicle’s optimal functioning and increasing its autonomy is
also presented and discussed.

KEY POINTS: Cycle, Motor, Dynamo, batteries, Controller,

1. Introduction
In the modern societies, the increasing needs of mobility means sometimes increasing the number of vehicles circulating. Ambient
concerns, as for instance local Electric bikes are new and promising form of urban transportation. The electric bicycles can progress
both cleaner development and moreover a lesser dependent on oil and gas. There is no need of fuel or coolant to run the electric bike
as compare to other automobiles. The electric bikes provide safe and comfortable transportation at free of cost. Electric bikes are
ecofriendly with nature as they do not emit any pollutant gas in the atmosphere pollutant emissions for the atmosphere, influence also,
in nowadays, the technical decisions related with all kind of vehicles. Picking an engine was the initial phase in making a suitable
framework for the electric bicycle. Electrical bicycle uses an electric motor, alternator and battery system, in which riders have to
pedal the bicycle and the generated electricity in the generator, is stored in storage battery. The stored energy can be used for riding
the bicycle. Electrical bicycle can be used for a variety of purpose. At first, the task was to be driven by DC miniaturized scale
engines that were arranged to turn a sprocket. The sprocket is utilized to transmit revolving movement between two shafts. In this
context, new alternatives to the existing internal combustion engines are mandatory. So, vehicles with electric propulsion seem to be
an interesting alternative. The electric bicycle is an errand that can progress both cleaner development and moreover a lesser
dependence on oil. It will continue running on clean electric power with the ability to resuscitate the battery. This is our opportunity to
contribute a greener and more profitable planet.

2. Technologies Used
1. Cycle is driven by using 24V DC motor of 250W.
2. The battery is connected to the controller which maintains the current flow.
3. The speed of motor is controlled by the throttle which is connected to the controller.
4. The battery is charged using 24V DC dynamo.
5. Using flywheel for the continuous and fast rotation of dynamo while the bicycle is driven.
6. The shaft of the dynamo is connected to the rear wheel of the cycle using chain drive and freewheel.

3. Methodology
To achieve the above stated objectives, the following methodologies are to be used:-
1. A mathematical vehicle model will be developed and MATLAB simulation will be carried out for evaluation
of power and energy requirements for a plug-in hybrid electric two wheeler for different driving cycles.
2. A simple control strategy has to be developed for Indian city driving conditions with less
fuel consumption for reducing emissions.
3. A conventional two-wheeler will be converted into a plug-in hybrid electric two-wheeler
by retrofitting a hub motor in the front wheel.
4. Experiments will be carried out on engine and electric hub motor to estimate the power and
torque requirements for various operating conditions.

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5. A detailed investigation will be carried out to estimate the battery energy and power requirements for
various conditions.
6. A cost benefit analysis will be carried out to estimate the battery pack cost and its payback
period.
7. An assessment of annual petroleum saving and greenhouse gas emission reduction from
the two-wheeler segment in India in the next decade will be carried out using a simple
emission model.
8. The controller is powered by batteries which are placed in the control box.
9. Controller connects the main electrical components: the throttle and electric brake
assembly and also the Hub motor. The throttle sends signal to the controller and based on
these signals the controller sends output to the hub motor.
10. Firstly the Hub motor was fit on to the rim using spokes.
11. The fabrication was carried out keeping in mind the maximum load the motor will be able
to withstand.
12. Various fabrication processes were carried out.
13. Tube cutting for the construction of chassis.
14. Edge grinding to provide smoother surface finishing.
15. Welding to join the tubes to form a stable chassis.
16. All the fabricated parts were assembled.
4. Advantages
1. In day to day life the prices of the fuels are increasing rapidly. Within few years the common man couldn’t afford the fuel
powered bikes due to the price.

2. To maintain economy, save money and to save fuel.

3. To encourage ecology.

4. To reduce transportation cost.

5. To make ride comfortable for everyone.
6. To eradicate pollution.

7. Low maintenance cost.

8. Easy and free parking.

9. Weight is lesser compared to motorbikes.

10. To design an electronic circuit that can be appended to an existing hardware (a system comprising a bicycle, a DC generator and a
lead-acid battery) that will make the charging process more comfortable for the user and increase the life-time of the batter human
transportation as a personalized vehicle.
11. In industries for different level personnel to move around to inspect the work progress. In hospitals, Airports, Shopping malls, IT
campuses, Hotels &resorts, Power stations, manufacturing units, etc..
12. Lightweight & easy to control, makes convenient for use by anyone.

13. Controlled speed ensures rider’s safety.

14. Can be used by old aged demography.
15. On site charging facility. No need to visit fuel station.

5. Disadvantages
1. The motor gets heated after so it cannot run for too long hours.
2. The motor cannot carry more than 2 people as there is load limit.
3. Electric bikes do not have too much speed like petrol engines.

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6. BILL OF MATERIALS

1 Cycle 1,100
2 24v DC Motor 4,500
3 Controller 350W 700
4 Throttle 350
5 Reverse Threaded Freewheel 300
6 24V DC Dynamo 1,500
7 Flywheel 270
8 Crank 220
9 Batteries 1,200
TOTAL 10,140

 It is most economical means of transport, it uses muscle energy for it’s

working.
 Cycling enhances the stamina of cyclists and also helps in strengthening the
muscles.
 It doesn’t require much space for parking

Fig.1. cycle

 It is an 24V Dc geared motor .

 Which is used to drive the cycle
 Which is controlled by controller
 And its can be accelerated by throtal

Fig2: motor

 It’s use in our project to charge the battery while discharging.

 When cycle is running dynamo generate dc current and charge
battery’s
 When Cycle is in running position we will connect dynamo with
motor

Fig.3. dynamo

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 It’s a 24V lead-acid battery.

 It is used to supply electricity to motor to run.
 It will be charge with the help of dynamo.

Fig.4. battery

 It is used to drive and control the motor.

 It is analogous to the human brain, processing information and
feeding it back to end user.

Fig.5. controller

7. CONCLUSION
1. Electric bikes are vital part of our future as it makes transportation affordable, quick, easy and convenient.
2. One of the key reason for the increase in electric bike is that batteries and motors have become high efficient, durable and light
weight.
3. No need to charge the battery externally as there is dynamo inbuilt through which battery is charged.

4. If you want to charge battery externally you can charge using an adopter or eliminator and you can also add solar panel if you are
able to bare the expenses.

5. With an electric bike you don’t need to worry about paying for any sort of special license or registration.
6. Electric bikes are one of the cheapest way of traveling.
7. Electric bike riders can tailor the difficulty level of their rides to meet their unique health and fitness needs.
8. You can go peddling incase the battery is totally discharged.
9. The discharged battery gets recharged as you keep peddling or riding the bike.

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Fig.6. Fabricated self-charging electric bicycle.

8. REFERENCES
1. “Electric Bicycle”, Yogesh jadhav et.al -2012

Department of Mechanical Engineering, University Of Mumbai

2. “Design and Development of an Electric Bicycle for Indian Teenagers”, Mohamed Rafi S-2014

M. Sc. (Engg.) in Product Design, M.S.R.S.A.S, Bangalore

3. “Electric Bicycle”, R.G.Deshpande-2015

Mechanical Department, BMS Institute Of Technology, Bangalore

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