公开(公告)号：EP3683929A1

公开(公告)日：2020-07-22

申请号：EP19216665.0

申请日：2019-12-16

申请人： Rolls-Royce plc

发明人： Chong, Ellis ,  Smith, Alexander ,  Zhou, Yuanpeng

IPC分类号： H02K1/14 ,  H02K1/26 ,  H02K41/02

摘要： An electromechanical system comprising: a rotor comprising a plurality of teeth spaced about a circumference of the rotor, wherein the teeth of the rotor are equally spaced about the rotor according to a tooth spacing angle, and are skewed in an axial direction such that the circumferential positions of the teeth of the rotor vary along the axial length of the rotor, and first and second stator segments, each extending partway about the rotor and comprising a field winding and poles arranged to magnetically interact with the teeth of the rotor such that an alternating current (AC) back-emf is induced in the field winding upon rotation of the rotor. The poles of the first stator segment are angularly displaced about the rotor from the poles of the second stator segment such that the back-emf induced in the field winding of the first stator segment is phase shifted with respect to the back-emf induced in the field winding of the second stator segment.

公开(公告)号：EP3683928A1

公开(公告)日：2020-07-22

申请号：EP19215461.5

申请日：2019-12-12

申请人： Rolls-Royce plc

发明人： Chong, Ellis ,  Smith, Alexander ,  Zhou, Yuanpeng

IPC分类号： H02K1/14 ,  H02K19/06

摘要： The present disclosure relates to an electromechanical system comprising a toothed rotor and a stator segment. The stator segment comprises an armature coil defining a coil interior. The stator segment further comprises first and second stator portions, each stator portion comprising connected inner and outer radially extending poles. Each of the inner poles passes through the coil interior and each of the outer poles is provided outside of the coil interior. The stator segment further comprises a bridge spacing the stator portions and the bridge comprises a magnetic field generator arranged to generate a magnetic field between the stator portions.