公开(公告)号：US11722025B2

公开(公告)日：2023-08-08

申请号：US17139253

申请日：2020-12-31

Applicant: TRANE INTERNATIONAL INC.

Inventor： Fredrik Boxberg ,  Charles J. Peterson ,  Yubo Nian ,  Petri J. Mäki-Ontto ,  Lauri Juhani Salmia ,  Russell T. Abbott ,  Tomas Fajt ,  Seth M. McGill

IPC: H02K1/27 ,  H02K15/03 ,  H02K11/01 ,  H02K1/28 ,  H02K1/278

CPC classification number: H02K1/278 ,  H02K11/012 ,  H02K15/03

Abstract: Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.

公开(公告)号：US20240030763A1

公开(公告)日：2024-01-25

申请号：US18366344

申请日：2023-08-07

Applicant: TRANE INTERNATIONAL INC.

Inventor： Fredrik Boxberg ,  Charles J. Peterson ,  Yubo Nian ,  Petri J. Mäki-Ontto ,  Lauri Juhani Salmia ,  Russell T. Abbott ,  Tomas Fajt ,  Seth M. McGill

IPC: H02K1/278 ,  H02K11/01 ,  H02K15/03

CPC classification number: H02K1/278 ,  H02K11/012 ,  H02K15/03

Abstract: Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.

公开(公告)号：US20220209598A1

公开(公告)日：2022-06-30

申请号：US17139253

申请日：2020-12-31

Applicant: TRANE INTERNATIONAL INC.

Inventor： Fredrik Boxberg ,  Charles J. Peterson ,  Yubo Nian ,  Petri J. Mäki-Ontto ,  Lauri Juhani Salmia ,  Russell T. Abbott ,  Tomas Fajt ,  Seth M. McGill

IPC: H02K1/27 ,  H02K11/01 ,  H02K15/03

Abstract: Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.