Electric motors are devices that convert electrical energy into mechanical energy, used in various applications like power tools, industrial machinery, and robotics. Key components include the stator, rotor, commutator, brushes, and housing, with different types of motors such as AC and DC motors. The operation relies on the interaction between a magnetic field and current-carrying conductors, generating force that causes the rotor to rotate.

1. ELECTRIC MOTORS

2. DEFINITION OF ELECTRIC MOTOR
• Electric Motor, any of a class of devices that convert electrical
energy to mechanical energy, usually by employing
electromagnetic phenomena.

3. USES OF ELECTRIC MOTORS
• Electric motors are used in a wide range of applications including:
• Power tools such as (drills, grinders, Jig saw)
• Industrial machinery(Conveyor belts, lifts)
• Robotics
• Elevators
• Wind turbines
• industrial robots
• Air Conditioners

4. Main Components of an Electric Motor
• Stator
• Rotor
• Commutator
• Brushes
• Housing or Frame

5. Stator
• Stator is refers to the stationary part of an electric motor. The
stator can be made up of amateur coil or a permanent magnet
that creates magnetic field.

6. ROTOR AND STATOR

7. Rotor
• Rotor refers to the rotating part of an electric motor, it is either
made up an amateur coil or a permanent magnet .

8. ROTOR AND STATOR CONFIGURATIONS

9. Commutator
• The commutator is a rotary switch that reverses the direction of
current flow in the armature coil, ensuring that the magnetic field
that interacts with the coil changes direction, causing continuous
rotation.

10. Brushes
• The brushes are a set of contacts that transfer current from the
stator to the rotor.
• The Brush is that part of an electric motor that transfer current to
the commutator, it serves as link between the motor’s terminal
and the commutator. It is usually made up of a carbon rod that
wears out gradually due to the friction that exist between
it(brush) and the commutator.

11. Housing or Frame
• The frame refers to the enclosure which houses the main
components of an electric motor. Some frames of an electric
motor helps in dissipating heat though the vents and heat plats
around it.

12. Electromagnet
• An electromagnet is a type of magnet that is created
by passing an electric current through a coil of wire.
• Unlike permanent magnets, which retain their
magnetism without an external power source,
electromagnets produce a magnetic field only when an
electric current flows through the coil. The strength of
the magnetic field generated by an electromagnet can
be controlled by adjusting the amount of current
flowing through the coil.

13. How Electric Motor Work
Electric motors work based on the interaction between a
magnetic field and current-carrying conductors. When an
electric current flows through the conductors in the
presence of a magnetic field, a force is generated, causing
the rotor to rotate.

14. TYPES OF MOTOR

15. AC Motors
• AC motors run on alternating current and include induction and
synchronous motors

16. DC Motors
• A direct current (DC) motor is an electric motor that uses direct
current (DC) electricity to produce mechanical force

17. BRUSHED DC MOTOR
A brushed DC motor is an internally commutated electric motor designed
to be run from a direct current power source and utilizing an electric
brush for contact.

18. PARTS OF A BRUSHED DC MOTOR

19. BRUSHLESS DC MOTOR
A brushless DC motor (BLDC motor) is a type of electric motor that operates using
direct current (DC) but does not rely on physical brushes and a commutator for the
generation of motion.

20. PARTS OF BRUSHLESS DC MOTOR

21. BRUSH OR BRUSHLES?

22. ASSIGNMENT