Types of DC Motors – Classification of DC Motors – Motor Types

Types of DC Motors – Classification of DC Motors – Motor Types


The DC Motor or the direct current motor has
a lot of application in today’s field of engineering and technology. As you already know, there are two electrical
elements of a DC motor, the field windings and the armature. The armature windings are made up of 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. In this video we will go to learn different
types of DC Motor. There are four basic types of DC Motor. 1. Permanent Magnet Motors. 2. Series Motors. 3. Shunt Motors. 4. Compound Motors. Permanent Magnet Motors: The permanent magnet motor uses a magnet to
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 motors can be found on low horsepower
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 motors cannot be used where a constant
speed is required under varying loads. Shunt Motors:
In a shunt motor 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 Motors: Compound motors 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 in parallel with the combination of series field winding and armature
winding. Dear sir, Thanks for watching the video. For More update please subscribes our channel
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