Controlling Induction Motor Speed with Fixed Frequency Supply

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strokebow
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If I have an induction motor connected to a fixed frequency supply then it is essentially a constand speed drive.

How can I control the speed of such a machine?
 
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strokebow said:
If I have an induction motor connected to a fixed frequency supply then it is essentially a constand speed drive.

How can I control the speed of such a machine?

Use a variable frequency drive (VFD) or change the number of poles.

CS