MULTILAYER ANALYSIS OF INDUCTION MACHINES, USING THE CONCEPT OF SUBLAYER IMPEDANCES

摘要

Multilayer analysis based on concept of sublayer impedances is performed for induction machines with composite rotors. The term "Sublayer Impedance' is proposed by authors and its concept is explained in this paper. It is shown that the simplified function relation concerning the sublayer impedance and the electromagnetic properties of media, such as conductivity and / or permeability, appears fairly distinct. Due to adopted media with different permeability and / or conductivity in outer sleeve, of composite rotors, the influences on the rotor surface impedance and machine performances are specially discussed in detail.