Induction Cup Parameters from Electromagnetic Field Theory and Experimental Analysis

Electromagnetic field theory and an experimental analysis are used to determine the parameters of induction cup machines. Equations for the rotor resistance, rotor self inductance, and stator to rotor mutual inductance are given in terms of machine geometry. Rotor end effects are also considered. A new test procedure is introduced to determine the ratio of rotor reactance to resistance and the ratio of the square of the mutual inductance to rotor self-inductance. This procedure, as well as existing test methods, is used to substantiate, experimentally, the theory.