Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What are the Methods of Improving Commutation?Commutation definitionCommutation is the process of reversing the current in the coil to keep the motor running efficiently.There are three main methods of improving commutation. Resistance commutation E.M.F. commutation Compensating windingsResistance CommutationIn this method of commutation we use high electrical resistance brushes for getting spark less commutation. This can be obtained by replacing low resistance copper brushes with high resistan

What is Commutation in DC Machine?Commutation definitionCommutation 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 contactThis process requires continuous contact between the commutator segment and the brush to maintain the current conversion.Ideal commutationIdeal commutation means that the current is reversed within the commutation cycle to avoid sparks and damage.Curr