What is Commutation in DC Machine?

What is Commutation in DC Machine?

Commutation definition

Commutation in a DC motor is defined as the process of converting alternating current generated in the armature winding to direct current using a commutator and a fixed brush.

Continuous contact

This process requires continuous contact between the commutator segment and the brush to maintain the current conversion.

Ideal commutation

Ideal commutation means that the current is reversed within the commutation cycle to avoid sparks and damage.

Current reversal

During commutation, the current flowing through the armature coil reverses the direction, which is essential for the operation of the DC motor.

Improved commutation

• Resistance commutation

• Voltage commutation

• Compensating winding