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

What is Phasor Diagram for AC Series Motor?Phasor diagram definitionThe phasor diagram illustrates the phase relationship between different electrical quantities in AC series motors.Characteristics of AC series motor Power factor characteristic Velocity current characteristic Torque current characteristics Torque speed characteristics Power output characteristicPower factorA high power factor requires low reactance and back electromotive force, which decreases when overloaded.Velocity and back e

PLC controls the start, hold and stop of the three-phase asynchronous motor

What are AC Series Motor?Ac series motor definitionThe AC series motor is an improved version of the DC series motor, suitable for operation under alternating current (AC).Modify requirementNecessary modifications include reducing eddy currents and increasing the power factor to improve the performance of AC power supplies.Compensation winding typeConduction compensated motorThe conductive compensation motor is characterized by a compensation winding in series with the armature, which is located

What is Induction Motor Maintenance ?Induction motor maintenance definitionInduction motor maintenance involves operations that increase the life of the equipment and help it operate more efficiently.Maintenance types of induction motorsSquirrel cage induction motors: Squirrel cage induction motors require much less maintenance because they do not contain brushes, commutators, or slip rings.Coil rotor induction motor: Because it contains slip rings, brushes, so it does need to be maintained from

PLC control three-phase asynchronous motor delay start

What is the Schrage Motor Operation Principle?Schrage Motor DefinitionA Schrage motor is defined as a combination of a wound rotor induction motor and a frequency converter with primary, secondary, and tertiary windings.Operation PrincipleAt standstill, three-phase currents in the primary winding produce a rotating field. This rotating field cuts the secondary winding at synchronous speed (ns).Therefore according to Lenz’s law the rotor will rotate in a direction so as to oppose the cause i.e. t

What are Crawling and Cogging of Induction Motor?Induction Motor PhenomenaCrawling and cogging are important characteristics to understand in the operation of squirrel cage induction motors.Crawling DefinitionThis is when an induction motor runs at much lower speeds than its designed speed, primarily caused by harmonics like the 5th and 7th producing additional torque.Cogging in Induction MotorOccurs when the motor fails to start because the slots of the stator lock up with the rotor slots, ofte

What is a Roter Fed Induction Motor?Inverted Induction Motor DefinitionAn inverted induction motor is defined as a motor where the rotor has a three-phase winding that receives power supply, creating mechanical revolving characteristics in both the stator and rotor.Connection SetupThe stator and rotor both have three-phase windings, with the rotor winding in a star configuration connected to slip rings.Operational PrincipleWhen the rotor and stator windings are fed with a three-phase supply at t

PLC control three-phase asynchronous motor delay stop

PLC controls the positive and negative rotation of three-phase asynchronous motor