Download dc motor

ELECTRICAL
MACHINES-
DC MOTOR
DETE 2 SEMSESTER
BY- PRASAD A. PAWASKAR SPN NO.-0903055
Take a ride of motor!







This presentation consists of the following concepts related to the
electrical machine which is used everywhere called ‘DC MOTOR’.
What are electrical machines?
What’s a Dc Motor?
It’s basic parts.
Animated working.
Different Motors.
Compare generator & motor diagrammatically.
Summary.
Electrical Machines
An Electrical machine is a device that
converts mechanical energy to electrical
energy or vice versa, and changes AC
voltage from one level to another level.
Electrical machines are divided into
three parts:
1.Generator
2. Motor
3. Transformer
DC MOTOR
In any electric motor, operation
is based on simple
electromagnetism.
A current-carrying conductor
generates a magnetic field;
when this is then placed in an
external magnetic field, it will
experience a force proportional
to the current in the conductor,
and to the strength of the
external magnetic field.

Dc motor basic parts




Every DC motor has six basic
parts-axle, rotor , stator,
commutator, field magnet(s), and
brushes.
In most common DC motors , the
external magnetic field is
produced by high-strength
permanent magnets,
Stator-stationary part of the
motor
rotor -consists of windings
Detailing of Parts






The two important parts of a Dc motor is the Rotor & Stator.
In simple words Rotor is the rotating part of motor & Stator is the stationary
part of the motor.
The Rotor actually as two sides in middle there is a AXLE, means that it is
like a wheel which helps the Rotor to rotate.
The Rotor is covered with the windings.
These parts are actually placed in another part that’s called the Metal
FRAME.
The most basic part needed for working of any kind of motor is the FIELD
MAGNETS.
Basic words related to a DC Motor



TORQUE- Any kind of Force on the
system(conductor).
STARTER-Device that creates a Force internally that
tends due an internal combination to cause Rotation
of the engine(motor.)
LOAD- External force acting on the mechanism.
Working of a Simple DC MOTOR
Next slide
Types of Motors
There are various types of motors
having the same basic principle:
1. Synchronous Motors
2. Induction Motors
3. Stepper-Motors
4. Universal motors

Compare generator & motor
MOTOR
GENERATOR
Summary
1.
2.
3.
4.
5.
6.
The following are the important points that should be
noted while considering a DC MOTOR:
Dc motor is most used electrical machine.
Converts electrical to mechanical energy.
The mechanical movement produced due to torque.
A Dc motor should never be started without load.
Starters are essential for starting all motors.
Dc motor is simply converse of a Dc Generator.
THANK
YOU!!!!