ELECTRIC TRACTION SYSTEMS

1. WELCOME
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2. TOPIC:-
ELECTRIC TRACTION
SYSTEMS
submitted by
Arunlal p
NEC0417507
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3. INTRODUCTION
This system includes straight electrical drive,
diesel electric drive and battery
operated electric drive vehicles. In
this, electrical motors are used for producing
the vehicle movement and are powered by
drawing electricity from utilities or diesel
generators or batteries.
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4. Components
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5. Figure
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6. What Is Electric Traction
System
A system which causes the propulsion of
vehicle in which tractive or driving force
is obtained from various devices such as
diesel engine drives, steam engine
drives, electric motors, etc. is called as
traction system.
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7. Supply System Of Electric
Traction
The way of giving the power supply to locomotive unit is
generally referred as traction electrification system.
Presently, there are four types of track electrification
systems are available based on the availability of supply.
These are
DC traction system
Single phase AC traction system
Three phase AC traction system
Composite traction system
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8. Advantages
DC series motors are employed in electric traction whose
starting torque is high. Due to high starting torque, it is possible
to produce high acceleration rates.
Electric locomotives require less maintenance compared to other
drives.
As it has no smoke it is well suited in underground transport
services
economical operation cost
It is possible to apply regenerative braking in electrical
locomotives. It has the advantage of about 80% of the energy
spent during ascent can be pumped back during descent
Supply of power to the locomotive is easier through the traction
substations.
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9. Disadvantages
Requires high capital cost.
Less flexibility of the routes.
Can cause interference with nearby
communication lines.
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10. Types Of Electric Traction
System
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11. Circuit Diagram
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12. Working
Electric traction allows the use of regenerative
braking, in which the motors are used as brakes
and become generators that transform the
motion of the train into electrical power that is
then fed back into the lines. ...
Most systems have a characteristic voltage and,
in the case of AC power, a system frequency
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13. Applications
AC and DC power supply systems are
used as a classification
of traction motors. ... Used in
various electrical applications such as
elevat
wound rotorors
trtrolleybuses
Olleybuses
electric hybrid vehicles
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14. Conclusion
•No single motor is ideal for traction work
but dc series motor is most suitable for
electric traction.
•Power electronics has been restored to in
a major way for conversion and control
operation.
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15. QUESTION….
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16. THANK YOU
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