公开(公告)号：US20170141648A1

公开(公告)日：2017-05-18

申请号：US15298941

申请日：2016-10-20

Applicant: ROLLS-ROYCE PLC

Inventor： Ellis F H CHONG ,  Brian E. SIMMERS

IPC: H02K7/116 ,  H02K1/27 ,  F02C7/36 ,  H02K7/08 ,  F02C6/20 ,  H02K41/02 ,  H02K7/18

CPC classification number: H02K7/116 ,  F02C6/203 ,  F02C7/36 ,  H02K1/2706 ,  H02K1/2786 ,  H02K1/2793 ,  H02K7/08 ,  H02K7/1823 ,  H02K16/02 ,  H02K19/06 ,  H02K19/103 ,  H02K41/02

Abstract: An electrical machine including a moveable permanent magnet configured to generate a first magnetic field. A stator including windings configured to excite a second magnetic field. A moveable inter-pole component located between the permanent magnet component and the stator, the inter-pole component comprising an array of magnetic inter-pole pieces. The speed of movement of the inter-pole component is controlled to set a magnetic gear ratio between the first and second magnetic fields. Also a gas turbine engine, propulsor or thruster incorporating the electrical machine.