14 P.14 - A three-phase induction motor with 4 magnetic poles, 60 Hz, rotates with a speed of n=1750 rpm In order to achieve a quick stop we can use a proper swap of 2 phases which normally corresponds to an inversion of rotation direction. For fast crossing, the technique of inversion of the direction of rotation by changing 2 phases is used. At the precise moment we swap the 2 phases, what are the slip, s, and the rotor current frequency, fR, like?

14 P.14 - A three-phase induction motor with 4 magnetic poles, 60 Hz, rotates with a speed of n=1750 rpm In order to achieve a quick stop we can use a proper swap of 2 phases which normally corresponds to an inversion of rotation direction. For fast crossing, the technique of inversion of the direction of rotation by changing 2 phases is used. At the precise moment we swap the 2 phases, what are the slip, s, and the rotor current frequency, fR, like?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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