公开(公告)号：US20170163135A1

公开(公告)日：2017-06-08

申请号：US15357647

申请日：2016-11-21

Applicant: ROLLS-ROYCE plc

Inventor： James EMBERTON ,  Alexis LAMBOURNE ,  John J A CULLEN

IPC: H02K17/16 ,  H02K15/09 ,  H02K3/48 ,  H02K15/02 ,  H02K1/26 ,  H02K3/32

CPC classification number: H02K17/165 ,  B23K20/122 ,  H02K1/265 ,  H02K3/32 ,  H02K3/48 ,  H02K15/0012 ,  H02K15/024 ,  H02K15/09

Abstract: A method of manufacturing an induction motor rotor assembly, the method includes the steps of: providing a rotor; machining a plurality of re-entrant slots axially along an outer surface of the rotor; positioning a sleeve concentrically over the outer surface of the rotor; applying a friction stir welding process to the sleeve along each re-entrant slot axially along the outer surface of the rotor to cause the sleeve material to plasticise and flow into the axial re-entrant slot to form an axial re-entrant slot bar; and providing an electrical connection at each of the opposing axial ends of the rotor between respective ones of opposing ends of each of the axial re-entrant slot bars to thereby form the induction motor rotor.

公开(公告)号：US20170040881A1

公开(公告)日：2017-02-09

申请号：US15204443

申请日：2016-07-07

Applicant: ROLLS-ROYCE plc

Inventor： Stephen WILLIAMSON ,  Alexander C. SMITH ,  John J A CULLEN ,  Ellis F H CHONG

IPC: H02K55/00 ,  H02K3/28

Abstract: An electrical machine including a rotor and a stator, at least one of the rotor and stator being provided with superconducting first electrical windings; and a set of one or more screen electrical windings, provided in the form of one or more further superconducting electrical windings, arranged around and radially outward of the first electrical windings; wherein the set of screen electrical windings is arranged to be supplied with an electrical current for generating a magnetic field of suitable magnitude and phase to reduce the magnitude of the magnetic field, generated at least by the first electrical windings during operation of the electrical machine, radially outwards of the screen electrical windings.

Abstract translation: 一种包括转子和定子的电机，所述转子和定子中的至少一个设置有超导​​第一电绕组; 以及一组一个或多个屏蔽电绕组，以一个或多个另外的超导电绕组的形式设置，布置在第一电绕组的周围和径向向外; 其中所述屏幕电绕组组被布置成被提供有用于产生具有适当幅度和相位的磁场的电流，以减小至少在所述电机操作期间由所述第一电绕组产生的磁场的大小， 屏幕电气绕组径向向外。