1. 1
Traction motors
Traction motor refers to an electric motor providing
the primary rotational torque of a machine, usually for
conversion into linear motion ie traction.
Linear motion is motion along a straight line

2. 2
Rail vehicles
Traditionally, these are DC series-wound motors,
usually running on approximately 600 volts. The
availability of high-powered semiconductors (such
as thyristors and the IGBT) has now made
practical the use of much simpler, higher-
reliability. AC induction motors known as
asynchronous traction motors. Synchronous AC
motors are also occasionally used, as in the French
TGV.

3. 3
The TGV Duplex power cars use a more streamlined nose
than previous TGVs.

4. 4
Thyristor
Also called a silicon-controlled rectifier (SCR)
Circuit symbol for a thyristor
IGBT
The insulated gate bipolar transistor or IGBT is a
three-terminal power semiconductor device, noted
for high efficiency and fast switching

5. 5
Electric Motor
Meaning : a motor that converts electricity
to mechanical work
1. Induction motor
An induction motor (IM) is a type of alternating
current motor where power is supplied to the
rotating device by means of electromagnetic
induction. It is also called asynchronous motor.
Induction motors are most commonly built to run on
single-phase or three-phase power, but two -phase
motors also exist

6. 6
2. Synchronous motor
A synchronous electric motor is an AC motor
distinguished1
by a rotor spinning with coils passing
magnets at the same rate as the alternating current
and resulting magnetic field which drives it. Another
way of saying this is that it has zero s lip under usual
operating conditions.

7. 7
3. DC Motors
A DC motor is designed to run on DC electric power
A: shunt B: series C: compound

8. 8
There are five types of DC motor:
1.DC series motor
2.DC shunt motor
3.DC compound motor - there are also two types:
1.cumulative compound
2.differentially compounded
4.Permanent Magnet DC Motor
5. Separtely excited DC Motor