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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
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.
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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
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.
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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
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.
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公开(公告)号：US11108286B2
公开(公告)日：2021-08-31
申请号：US15992393
申请日：2018-05-30
Applicant: Trane International Inc.
Inventor： Fredrik Boxberg
Abstract: An electrical machine has passages in the coil ends of a stator. The passages have an inlet port and an exit port disposed at different locations. The passages remove heat from the electrical machine during operation. The passages formed in the coil ends can receive a cooling fluid discharged from cooling passages formed in a stator core. Tooling can be used to form the passages. In some embodiments passages are also formed in the rotor. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for electrical machines and the cooling of electrical machine rotors and/or stators.
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