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Produce rotating magnetic field in three phase induction machine

 Rotating magnetic field produce in three phase induction machine. 


When a three phase supply is produced in three phase induction machine then stator winding are energized and magmatic flux is produced . this magmatic flux are 120° different from each other.and it's roted anticlockwise direction due to this inertia the magnetic flux is cut to the rotor conductor.

For it a emf is induced on rotor conductor .for this  mmf  the rotor is rotated with synchronous speed.


RMF in Induction Motor is Rotating


To demonstrate that this RMF is pivoting we will: 


Stage 1: We will discover the upsides of complete motion ɸT for various upsides of θ like 0, 60, 120 , 180 … .. 360o. 


Stage 2: For each worth of θ in sync 1, we will draw the phasor charts. 


By noticing these phasor digrams you can see effectively that ɸT continue to move its situation from 90o to 30o to – 30o to – 90o, etc. As such ɸT turns the clock insightful way.


Bearing of Turning Attractive Field 

The bearing of turning attractive field relies on the stage succession of the air conditioner supply associated across the stator winding. In the event that we exchange any two periods of the air conditioner supply, we will get new stage succession, then, at that point, the bearing of pivoting attractive field in three stage acceptance engine will turn around. It will begin pivoting backward course thus does the rotor. 


Since a stator and its twisting of three stage acceptance engine is equivalent to that of a coordinated engine. So all above conversation about RMF in acceptance engine is something very similar for RMF in coordinated engine too.

basic principal of three phase induction motor

Assuming two attractive fields are available in a machine, a force will be made which will in general arrange the two attractive fields. On the off chance that one attractive field is delivered by the stator of an air conditioner machine and the other one is created by the rotor of the machine, then, at that point, a force will be initiated in the rotor which will make the rotor turn and fall in line with the stator attractive field. Assuming there were some way of making the stator attractive field turn, the initiated force in the rotor would make it continually \"chase\" the stator attractive field around all around. This, more or less, is the essential standard of all air conditioner engine activity.



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