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A Seminar Presentation

On

“Brushless permanent magnet D.C motor for Electric Bike and impulse charging for their battery“

submitted in partial fulfillment

for the award of the Degree of

Bachelor of Technology in Electrical Engineering

Supervisor: Submitted By:

Mr. Mayank Ranjan Kamaldeep singh Asst. Proff.

Department of Electrical Engineering Sri Balaji Technical Campus, Jaipur

Rajasthan Technical University, Kota March-2015

Introduction

The introduction of the Research contain the following points have been discussed –

• Why this research is useful?

• Study the literature survey of this research.

• About Ebike

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Pollution

Petrol fumes choke our

atmosphere everyday and brings

new evidence that our appetite for

oil is poisoning the planet. If the

state of affairs is already so bad,

imagine the kind of the world

future generations will inherit.

Solution

There is a solution for this –

Electric Vehicles. They run on

batteries, so there is zero

expenditure on petrol and better

still, no air pollution.

Aside from being light

on your pocket and

light on your conscience, the

no-petrol vehicle is easy to use,

light weight and maintenance

free, providing stress free

experience.

The advantages are obvious and the potential is

limited only by your imagination. Clean, Green and

Healthy.

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1 Research Background

•The recent development of integrated electric drives is closely related to the evolution of smart

motor technologies. However, the development of new motor structures imposes higher

requirements than conventional one.

•Exemplary for vehicles for disabled people, electric bikes or electric scooter. In such a motors

family induction motor and PM could take a Dominating role.

• It wasn’t until 1998 when there were at least 49 different bikes manufactured by various

companies. Production grew from 1993 to 2004 by an estimated 35%.Today, we are planning to

continue on with the concept of the electric bike and look for new ways of making a more

efficient and practical electric bike.

What is an Electric Bike?Fundamentally, an e-bike is just a regular bicycle

with an electric motor to provide additional

assistance. You can pedal normally and just use

the motor to help out on hills and headwinds, or

use the motor all the time just to make riding

easier. The experience is entirely different from

riding say a gas scooter or motorbike. Here the

electric assistance is perfectly smooth and silent,

and it complements rather than supplants human

power.

Motor Application

• The proposed the direct drive of electric bicycle, while the brushless

PMDCM is mounted in hub of the ahead wheel of a bicycle has been seen

in Figure. Authors propose, instead classical bike structure where second

wheel is driven, ahead wheel to be driven. This philosophy of wheel

driving gives the manufacturer to assemble such a bike according to the

customer demand. The battery supplying system consists of two lead-acid

accumulators. One part of the electronics control system is mounted on the

handlebar, but the other one is mounted on the front guide fork.

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Cross section of the BLDCM

General view of Ebike

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Batteries in Electric Bikes

• Electric bikes use one of three types of batteries:

1) Lead Acid

2) Nickel Metal Hydride

3) Lithium Ion (Li Ion).

• A typical battery in an electric bike will have

approximately 250W – 500W power.

• 1 types of batteries are explained as follows:

Lithium Ion (Li Ion) batteries:

The newest technology in batteries. They're pretty comparable to NiMH batteries, with the exception of these two differences:

Lithium Ion batteries are a little bit lighter.

A Lithium Ion battery will last about 800 full charge cycles before it needs to be replaced.

Impulse Charging

In order to extend the battery working time,

leading to increase the bike travelling distance, the

impulse electric circuit of transferring the energy

coming from induced electromotive forces in DC

motor windings is proposed. The battery charging

goes during the so called generator braking.

Approximate expense for 4 years

Electric Bike 29,200km 10Ps for =1 Km= Rs 2,920

Bike Cost = Rs 48,000Battery cost= Rs 10,000

Total Expense= Rs 60,920

Petrol Bike29,200 km 584 litre = Rs 47888

Bike Cost = Rs 50,000

Total Expense= Rs 97,888

Conclusion

Purchase Electric

bikes and save

our Mother Earth.IT IS YOU! WHO CAN STOPPOLLUTION AND

START A REVOLUTION!!

References

1. Zhang Z., Profumo F., Tenconi A,�” Wheels axial flux machines for

electric vehicle applications�”, International Conference Electrical

Machines (ICEM�’94), Conference Proceedings, Paris, Sept. 1994.

2. Consoli A, �“Propulsion Drives for Light Electric Vehicles�”,

International Conference Electrical Machines (ICEM�’94), Conference

Proceedings, Paris, Sept. 1994.

3. Wiak S., Welfle H., Kom za K., Mendrela E., �“Electromagnetic Field

Analysis of Disk-type Induction Motor�”,International

ConferenceElectrical Machines (ICEM 98), vol. 2/3, pp. 735-739, 2- 4

September 1998, Istanbul, Turkey16

References

4. Nadolski R., Gaw cki Z., Staszak J. Ludwinek K., “Gearless drive oflight electric

vehicles on the example of the bicycle driven withbrushless DC motor with

three�–phase winding�”, 4th International Workshop on Research and Education

in Mechatronics 2003,October 2003, University of Applied Sciences, Bochum,

Germany.

5. Wiak, S., Nadolski, R.: Disc Type Motors for Light Electric Vehicles -Comparative

Study", The First Slovenian - Polish Joint Seminar onComputational and Applied

Electromagnetics, September 10 �– 12, Maribor, S owenia 2001.

6. Wiak, S., Welfle, H., Nadolski, R.: Static and dynamic states analysis of disc type

motors for light electric vehicles. 15-th International Conference on Electrical

Machines ICEM'2002, 25-28 august 2002, Brugge - Belgium.

7. Wiak S., Nadolski R., Ludwinek K., Gaw cki Z.: DC Permananet Magnet Motor for

Electric Bike and their Impulse System for Battery Charging. 16-th International

Conference on Electrical Machine ICEM'2004, 5-8 September 2004, Cracov .17

Any Question/Suggestion?

Thank for your kind

attention

Please.

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