公开(公告)号：US20240313589A1

公开(公告)日：2024-09-19

申请号：US18589674

申请日：2024-02-28

Applicant: ROLLS-ROYCE PLC

Inventor： Seamus D. GARVEY ,  Mark J. BODEN ,  Sophoclis PATSIAS

IPC: H02K1/14 ,  F02C6/20 ,  F02C7/268 ,  H02K7/18 ,  H02K11/21 ,  H02K11/30

CPC classification number: H02K1/146 ,  F02C6/20 ,  F02C7/268 ,  H02K7/1823 ,  H02K11/21 ,  H02K11/30

Abstract: An electric machine includes a stator having a phase arrangement, and a rotor. The phase arrangement includes legs connected in parallel at first and second primary junctions. Each leg includes a plurality of coils connected in series through a respective intermediate junction. Each leg is connected to at least one other leg by a branch at the respective intermediate junctions such that the phase arrangement is a bridge circuit. The phase arrangement conducts a motor current through the respective coils between the first and second primary junctions. The phase arrangement permits an alignment current to flow between the first and second primary junctions along an alignment current path which passes through at least one coil of two different legs via a respective branch. The motor currents cause a torque to be applied to the rotor, and the alignment current causes a translational force to be applied to the rotor.

公开(公告)号：US20230133728A1

公开(公告)日：2023-05-04

申请号：US17958996

申请日：2022-10-03

Applicant: ROLLS-ROYCE plc

Inventor： Duncan A MACDOUGALL ,  Julian M REED ,  Sophoclis PATSIAS ,  Antonio PELLEGRINO ,  Clive R SIVIOUR ,  Daniel EAKINS ,  Yuan XU ,  Junyi ZHOU

IPC: G01N3/30 ,  G01N3/02

Abstract: A system for measuring loading on a test specimen. The system includes the test specimen arranged between a first loading bar and a second loading bar. The system further includes a first loading unit and a second loading unit configured to apply a first load and a second load to the first and second loading bars, respectively. The system further includes a first clamp and a second clamp configured to hold the first and second loading bars against the first and second loads, respectively. The system further includes a clamp actuating unit configured to selectively release at least the first clamp. The clamp actuating unit further includes a controller configured to electrically actuate at least one first electromechanical transducer from a retained state to a released state to release the first clamp, such that the first loading bar applies a first loading wave to the test specimen.