公开(公告)号：US2497141A

公开(公告)日：1950-02-14

申请号：US9607749

申请日：1949-05-28

Applicant: SCHULTZ FREDERIC W

Inventor： SCHULTZ FREDERIC W

IPC: H02K19/12

CPC classification number: H02K19/12

公开(公告)号：US2407121A

公开(公告)日：1946-09-03

申请号：US51197443

申请日：1943-11-27

Applicant: GEN ELECTRIC

Inventor： WINTER FRED H

IPC: H02K19/12

CPC classification number: H02K19/12 ,  Y10T307/735

公开(公告)号：US1670031A

公开(公告)日：1928-05-15

申请号：US14343126

申请日：1926-10-22

Applicant: FYNN VALERE A

Inventor： FYNN VALERE A

IPC: H02K19/12

CPC classification number: H02K19/12

公开(公告)号：US1535774A

公开(公告)日：1925-04-28

申请号：US33630219

申请日：1919-11-07

Applicant: ELECTRIC MACHINERY MFG CO

Inventor： TRUMAN HIBBARD

IPC: H02K19/12

CPC classification number: H02K19/12

公开(公告)号：US12166388B2

公开(公告)日：2024-12-10

申请号：US18708164

申请日：2022-10-18

Applicant: MAHLE International GmbH

Inventor： Thorsten Grelle ,  Peter Kozlowski ,  Penyo Topalov ,  Philipp Zimmerschied

IPC: H02K19/36 ,  H01F38/18 ,  H02K11/20 ,  H02K19/12 ,  H02K19/26

Abstract: An inductively electrically excited synchronous machine is disclosed. The synchronous machine includes a rotor including at least one rotor coil for generating a magnetic rotor field, a stator, on which the rotor is rotatably mounted about an axis of rotation, and including at least one stator coil for generating a magnetic stator field, and a rotary transformer for inductively transmitting electrical energy to the at least one rotor coil. The rotary transforming includes at least one stator-fixed transformer primary coil and at least one rotor-fixed transformer secondary coil. A machine controller is coupled to the stator coil and to the at transformer primary coil for operation as a motor and/or as a generator. A demagnetizing circuit is provided that includes at least one dynamo winding arranged on the stator. The demagnetizing circuit has at least one switching device for activating and deactivating the demagnetizing circuit.

公开(公告)号：US12081086B2

公开(公告)日：2024-09-03

申请号：US17558578

申请日：2021-12-21

Applicant: Mahle International GmbH

Inventor： Guanqun Chen ,  Stefan Kanz ,  Penyo Topalov ,  Florian Osdoba

IPC: H02K19/12 ,  H02K7/00 ,  H02K7/116

CPC classification number: H02K19/12 ,  H02K7/003 ,  H02K7/116

Abstract: An externally excited electric machine may comprise a stator, a rotor, a primary winding, a secondary winding, and electronics. The rotor may be arranged coaxially to and/or in the stator. The rotor may be rotatable relative to the stator about a rotation axis running in an axial direction. The rotor may have a magnetizable hollow-cylindrical core. The primary winding may be guided axially through the core. An electric primary current may flow through the primary winding. The secondary winding may be wound around the core so that an electric secondary current is induced via the primary winding in the secondary winding. The electronic may be connect to the secondary winding for tapping the secondary current.

公开(公告)号：US20240178726A1

公开(公告)日：2024-05-30

申请号：US18520824

申请日：2023-11-28

Applicant: Volektra Inc.

Inventor： Manish Kumar Seth ,  Luis Pont Lezica

IPC: H02K11/049 ,  H02K7/08 ,  H02K19/12

CPC classification number: H02K11/049 ,  H02K7/083 ,  H02K19/12

Abstract: A synchronous machine (100) includes a housing, a shaft (106) to mount a three-phase rectifier (124), main motor (116) and a rotating transformer (RT) (108). The main rotor (110) is concentrically and co-axially mounted on shaft (106), and main stator (112) is concentrically and co-axially assembled over main rotor (110). Main rotor (110) includes Direct Current field windings and main stator (112) includes Alternating Current poly-phased distributed windings. Further, the RT (108) includes an RT rotor (120) and RT stator (122). RT rotor (120) and RT stator (122) may include AC poly-phase distributed windings and second predefined number of poles. Further, RT rotor (120) may be configured to be rotatably coupled on first end (106A) of shaft (106). The RT stator (122) may be configured to concentrically and co-axially assembled over RT rotor (120).

公开(公告)号：US11777385B2

公开(公告)日：2023-10-03

申请号：US16764686

申请日：2018-11-16

Applicant: Cummins Generator Technologies Limited

Inventor： Anthony Spargo ,  Peethamparam Anpalahan

IPC: H02K19/28 ,  H02K1/24 ,  H02K9/06 ,  H02K19/12 ,  H02K15/16

CPC classification number: H02K19/28 ,  H02K1/24 ,  H02K9/06 ,  H02K19/12 ,  H02K15/165

Abstract: An excitation system (15) is disclosed for providing excitation to a main rotating electrical machine (2). The excitation system comprises an exciter (50) and an auxiliary generator (52). The exciter and the auxiliary generator have separate stator cores (14, 18) and share a common rotor core (16). The common rotor (16) core may be located between the two stator cores (14, 18). This may help to optimize space, improve material usage and reduce the total rotating mass. A mounting arrangement for the common rotor core is also disclosed.

公开(公告)号：US11509175B1

公开(公告)日：2022-11-22

申请号：US17714846

申请日：2022-04-06

Applicant: John Sheung-Chun Hsu

Inventor： John Sheung-Chun Hsu

IPC: H02K1/14 ,  H02K1/24 ,  H02K1/30 ,  H02K19/10 ,  H02K19/12 ,  H02K19/20

Abstract: A homopolar multi-core energy conversion device is an apparatus that uses magnetic flux commutation instead of a combination of electrical current commutation and brushes. The apparatus includes a first discontinuous annular stator core, a second discontinuous annular stator core, and a rotor core. The first discontinuous annular stator core is configured to generate a circumferentially-segmented clockwise magnetic flux around the rotor core, while second discontinuous annular stator core is configured to generate a circumferentially-segmented counter-clockwise magnetic flux around the rotor core. The rotor core is configured to radially partition a traversing magnetic flux. The circumferentially-segmented clockwise magnetic flux, the circumferentially-segmented counter-clockwise magnetic flux, and the traversing magnetic flux interact with each other so that the apparatus can function either as a motor or as a generator. The aforementioned components of the apparatus can be configured into different embodiment to achieve the same function.

公开(公告)号：US11489420B2

公开(公告)日：2022-11-01

申请号：US16797821

申请日：2020-02-21

Applicant: Vitesco Technologies GMBH

Inventor： Michael Bulatow ,  Wilhelm Hackmann

IPC: H02K15/12 ,  H02K15/02 ,  H02J50/10 ,  H01F38/18 ,  H02K1/30 ,  H02K3/51 ,  H02K3/52 ,  H02K11/00 ,  H02K11/042 ,  H02K15/06 ,  H02K15/16 ,  H02K19/12

Abstract: A method for manufacturing a rotor for an electric machine with a contactless power transmission system, wherein an end winding cover is arranged on one end face of a laminated core of the rotor. The invention provides that a secondary unit (SEC) of the power transmission system is integrated in the end winding cover and, as a result, after the end winding cover has been arranged, the secondary unit (SEC) is held on the rotor indirectly via the end winding cover.