公开(公告)号：US20180262069A1

公开(公告)日：2018-09-13

申请号：US15451550

申请日：2017-03-07

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Leyi Zhu ,  Lusu Guo ,  Michael W. Degner

IPC: H02K1/27 ,  H02K21/14

CPC classification number: H02K1/2766

Abstract: An electric machine includes a unitary, single material substrate defining a rotor lamination including a first region having a predefined magnetic permeability. The rotor lamination includes an arc-shaped second region having a magnetic permeability less than the first region. The second region is oriented such that it impedes flux associated with magnets contained by the first region and perpendicular to quadrature flux field lines associated with the magnets.