Modeling electromagnetic processes in electromagnetic brakes and slip clutches with hollow ferromagnetic rotors

摘要

A mathematical and a computer model have been obtained; the moment of electromagnetic brakes with a hollow ferromagnetic rotor has been estimated based on these models. Mechanical characteristics derived from these equations match with experimental ones after introduction of the edge effect factor. The equation enables researches of impacts of various structural parameters on the moment of electromagnetic brakes and slip clutches and to improve the design of these devices. The analysis of obtained models has revealed features of electromagnetic processes within the hollow electromagnetic rotor which has a non-linear magnetic characteristic. The characteristic curves provided illustrate effect of rotation frequency on non-uniform distribution of current density and magnetic induction over the rotor section.