Types of DC Motors and their uses

TYPES OF DC MOTORS AND THEIR USES

The DC Motor or direct current motor has a lot of application in today’s field of Engineering and Technology.

  • There are two Electrical elements of a DC motors the field windings and the armature Windings.
  • The Armature windings are made up o current carrying conductors that terminate at a commutator.
  • DC Voltage is applied to the armature windings through carbon brushes which ride on the commutator.
  • Different functional types of DC motor are available in the market for specific requirements.DC MOTOR

There are four Basic Types of DC Motor.

  1. PERMANENT MAGNET MOTOR.
  2. SERIES MOTOR.
  3. SHUNT MOTOR.
  4. COMPOUND MOTOR.

PERMANENT MAGNET MOTORS

 
  • The permanent magnet motor uses a magnet t supply field flux permanent magnet DC motors have excellent starting torque capability with good speed regulation.
  • A disadvantage of permanent magnet DC motors is they are limited to the amount of load they can drive.
  • These motor can be found on low horse power applications.

SERIES MOTORS

 
  • In  a series DC motor the field is connected in series with the armature.
  • The field is wound with a few turns of large wire because it must carry the full armature current.
  • A characteristic of series motors is the motor develops a large amount of starting torque. However speed varies widely between no load and full load.
  • Series motor cannot be used where a constant speed is required under varying loads.

SHUNT MOTOR

  • In a shunt modtor the field is connected in parallel (shunt) with the armature windings.
  • The shunt connected motor offers good speed regulation.
  • The field winding can be separately excited or connected to the same source as the armature.

COMPOUND MOTOR

  • Compound motor have a field connected in series with the armature and a separately excited shunt field.
  • The series field provides better starting torque and the shunt field provides better speed regulation.

Compound Motors are further divided as Two Types

  1. Short shunt compound Motor: This motor field winding is connected in parallel with only the armature winding.
  2. Long shunt compound Motor.: This Motor field winding is connected parallel with the combination of series field winding and armature winding.
Summary
TYPES OF DC MOTORS AND THEIR USES
Article Name
TYPES OF DC MOTORS AND THEIR USES
Description
The DC Motor or direct current motor has a lot of application in today's field of Engineering and Technology.
Author
Publisher Name
Ghulam Hyder
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