The rotor is either a wound type or consists of copper bars short circuited at each end in which case it is known as squirrel cage rotor. How motors work for beginners episode 3.
Types And Construction Of Three Phase Induction Motor
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Induction motors are most commonly run on single phase or three phase power but two phase motors exist.
Three phase induction motor theory. Many single phase motors having two windings can be viewed as two phase motors since a capacitor is used to generate a second power phase 900 from the single phase supply and feeds it to the second motor winding. Like any electric motor a 3 phase induction motor has a stator and a rotor. A 3 phase induction motor consists of two major parts.
In theory induction motors can have any number of phases. Production of a rotating magnetic field. When the primary winding or stator is connected to a three phase alternating current supply it establishes a rotating magnetic field which rotates at a synchronous speed.
The stator of three phase induction motor with written pole technology consists of two sets of three phase stator windings one placed on stator slots while second wound on stator teeth. The power line available for industries is 400v50hz three phase four line ac power and the inductions motors which work on this supply in industries are called three phase induction motors. 3 phase induction motor is self starting hence extra starting motor or any special starting arrangement is not required they also have some disadvantages speed decreases with increase in load just like a dc shunt motor.
Jeremy fielding 289948 views. The stator carries a 3 phase winding called stator winding while the rotor carries a short circuited winding called rotor winding. Only the stator winding is fed from the 3 phase supply.
The suggested design is suitable for electrichybrid vehicles aerospace applications ship propulsion etc. The three phase induction motor carries a three phase winding on its stator. The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 1200.
Construction of three phase induction motor. R 1 0342. Three phase induction motors.
For better understanding the working principle of three phase induction motor let us look into the construction of three phase induction motor. A 3 phase y connected 460 volt line to line 25 horsepower 60 hz 8 pole induction motor has the following constants in ohms per phase referred to the stator.
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