Polyphase Induction Machine with a Slitted Ferromagnetic Rotor: II - Analysis

This paper attempts the analysis of the polyphase induction machine with a slitted ferromagnetic rotor using Maxwell's field equations and concepts of equivalent permeabilities and resistivities. The analysis satisfactorily accounts for 1) physical dimensions of the slits and their number, 2) the provision of a nonmagnetic conductor, like copper in the slits, and the nature of rotor end terminations.