Speed Control of Induction Motors: A Thesis Submitted for the Degree of Bachelor of Science, Electrical Engineering Course (Classic Reprint)

Excerpt from Speed Control of Induction Motors: A Thesis Submitted for the Degree of Bachelor of Science, Electrical Engineering Course

Where S is the synchronous speed.in R. P. Mi f is the frequency in cycles per second, and p is the number Of poles per phase. The speed of the motor when Operating under a load is H S (100% s) where N is the speed in R. P. LI., 8 is the synchronous speed, and s is the slip in per cent Of synchronous speed. In all the methods previously classified and hereinafter described, the object, in order to Obtain various speeds, is to change one or two Of the following:- the slip, the frequency, the number Of poles, or the factors controlling them. The various methods, which are used to bring about these changes, will be described somewhat briefly, although not exactly as in the order given. The internal concatenation and Spinner speed con.

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