Rotor lamination shaping for minimum core loss in SRMs

摘要

An electrical machine rotor includes a flux-conducting portion and a flux-inhibiting portion. The flux-conducting portion is conducive to conveying an electromagnetic flux and has a plurality of salient rotor poles and a portion of back material. The flux-inhibiting portion is less conducive to conveying an electromagnetic flux than the flux-conducting portion and is disposed entirely outside the boundaries of the rotor poles.

主权项

1. An electrical machine rotor comprising:
a flux-conducting portion, comprising a plurality of salient rotor poles and a portion of back material, that is conducive to conveying an electromagnetic flux; and a flux-inhibiting portion that is less conducive to conveying an electromagnetic flux than the flux-conducting portion, wherein the flux inhibiting portion is disposed entirely outside the boundaries of the rotor poles, the flux-inhibiting portion comprising:
a first plurality of circumferentially-spaced first air slots, wherein each first air slot is aligned with a rotor pole of the plurality of rotor poles; anda second plurality of circumferentially-spaced second air slots, wherein each second air slot is aligned with a space between adjacent rotor poles, the second plurality of second slots positioned radially inward from the first plurality of first slots.