what is known as commutator??
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The reversal of current in the armature winding by means of commutator segment bar and carbon brushes provided is known as commutation process.
Why Commutation In DC Machine is required?…….
Commutation helps to solve two purposes,
1. It converts alternating current to direct current
2 It maintains rotor magnetomotive force stationary in space.
Concept of Commutation in DC Machine
Let we consider that commutator bar width is equal to brush width and insulation between the commutator bar is of negligible thickness.
❤❤❤❤❤❤❤❤❤❤❤
Why Commutation In DC Machine is required?…….
Commutation helps to solve two purposes,
1. It converts alternating current to direct current
2 It maintains rotor magnetomotive force stationary in space.
Concept of Commutation in DC Machine
Let we consider that commutator bar width is equal to brush width and insulation between the commutator bar is of negligible thickness.
❤❤❤❤❤❤❤❤❤❤❤
Answered by
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keep the torque on a DC motor from reversing every time the coil moves through the plane perpendicular to the magnetic field, a split-ring device called a commutator is used to reverse the current at that point. The electrical contacts to the rotating ring are called "brushes" since copper brush contacts were used in early motors. Modern motors normally use spring-loaded carbon contacts, but the historical name for the contacts has persisted.
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