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

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Three phase induction motor definitionThe three-phase induction motor is defined as a type of electric motor that is most widely used in industry due to its efficient power delivery and simple structure.Main component The motor consists of a stationary component called a stator and a rotating component called a rotor. Three-phase asynchronous motor statorStator frameIt is the exterior of the three-phase induction motor. Its main function is to support the stator core and the excitation winding.

Three phase induction motor definitionA three-phase induction motor is an asynchronous motor that operates at a different speed than a synchronous one and uses a three-phase power supply.StatorThe stator is the stationary part of the motor that receives a three-phase power supply to generate a rotating magnetic field.Major component compositionStator frameThe stator frame is the exterior of the three-phase induction motor. It supports the stator core and the field windings, providing protection

Torque equation definitionThe torque in the three-phase induction motor is calculated based on rotor current, magnetic flux and power factor.Rotor currentThe rotor current is critical for generating torque and is affected by the induced electromotive force and impedance of the rotor.Starting torqueStarting torque is the torque generated when the induction motor is started. We know that at the beginning of the rotor speed, N is zero.Therefore, just by placing the value of s=1 in the torque equati

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What is The Speed Control of Three Phase Induction Motor?Three-phase induction motorA three-phase induction motor is an electromechanical device that operates primarily at a constant speed unless a specific control method is used.V/f controlBy maintaining a constant voltage frequency (V/f) ratio, this method effectively controls the speed of the induction motor while preventing core saturation.Rotor and stator controlSpeed adjustment can be made from the rotor side, by increasing the resistance

What is a 3 Phase Induction Motor ?Three phase induction motor definitionA three-phase induction motor is a self-starting motor that converts three-phase AC electrical energy into mechanical energy without the need for an additional starting mechanism.Main componentThree-phase induction motor statorThe stator of a three-phase induction motor consists of a number of slots to build a three-phase winding circuit, which we connect to a three-phase AC power supply. We arrange the three-phase windings

What is Induction Motor Rotor?Induction motor rotor definitionThe rotor is a rotating part of a motor in which current is induced by a rotating magnetic field.Type of rotor Squirrel cage rotor Wound rotorSquirrel cage rotor featuresIn this type of rotor, the rotor winding consists of conductors that are embedded in semi-closed slots in the form of copper or aluminum strips in the laminated rotor core. In order to facilitate the formation of a closed path in the rotor circuit, both sides of the r