-
公开(公告)号：US12257873B2
公开(公告)日：2025-03-25
申请号：US17863514
申请日：2022-07-13
Applicant: GM Global Technology Operations LLC
Inventor： Alireza Fatemi , Thomas W. Nehl , Chandra S. Namuduri , Brian K Saylor , Nilesh D. Mankame , Anthony Michael Coppola
Abstract: A vehicle, suspension system and method of dampening a force on the suspension system is disclosed. The suspension system includes a damper having a first damping element and a second damping element configured to rotate relative to each other in response to a force received at the suspension system. The second damping element induces an eddy current in the first damping element during relative rotation. A feature of one at least one of the first damping element and the second damping element provides a first electrical resistance to the eddy current during relative rotation in a first direction and a second electrical resistance to the eddy current during relative rotation in a second direction. The first electrical resistance generates a first damping force and the second electrical resistance generates a second damping force.
-
公开(公告)号：US20240072703A1
公开(公告)日：2024-02-29
申请号：US17895366
申请日：2022-08-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chandra S. Namuduri , Suresh Gopalakrishnan , Norman K. Bucknor , Alireza Fatemi , Thomas W. Nehl
CPC classification number: H02P23/02 , B60L15/2045 , H02P23/14 , B60L2240/12 , B60L2240/423
Abstract: A method of controlling an electric motor of a vehicle includes monitoring torque command signals from a vehicle system to the electric motor, each torque command signal configured to cause the electric motor to output a commanded torque, and monitoring a speed of the vehicle and an output torque of the electric motor, the output torque responsive to a drive signal generated based on the torque command signals. The method also includes, based on the output torque and the vehicle speed indicating a low motor efficiency condition, modulating the drive signal between a first torque value and a second torque value that is less than the first torque value, the first torque value greater than the commanded torque and selected to increase an efficiency of the electric motor.
-
公开(公告)号：US20240051386A1
公开(公告)日：2024-02-15
申请号：US17884029
申请日：2022-08-09
Applicant: GM Global Technology Operations LLC
Inventor： Dongxu Li , Edward W. Mellet , Norman K. Bucknor , Clinton E. Carey , Thomas W. Nehl
IPC: B60K17/346 , B60K23/08
CPC classification number: B60K17/3462 , B60K23/0808 , B60Y2200/91
Abstract: An electric vehicle, system, and method for operating the vehicle. The electric vehicle has a first motor, a second motor and a processor. The processor is configured to select the first motor for disengagement from a first axle, adjust a torque provided from the first motor to the first axle to zero, disengage the first motor from the first axle, and reduce a speed of the first motor to zero.
-
公开(公告)号：US11770039B2
公开(公告)日：2023-09-26
申请号：US17201251
申请日：2021-03-15
Applicant: GM Global Technology Operations LLC
Inventor： Xiaofeng Yang , Thomas W. Nehl
Abstract: A rotor core for an electric motor includes a core stack including a plurality of identical lamination plates, each lamination plate including a plurality of magnet slots formed therein, the magnet slots of each of the lamination plates axially aligned and adapted to support a plurality of permanent magnets therein, and a plurality of heat conductive inserts extending axially through the core stack and adapted to conduct heat from inner portions of the core stack outward toward distal ends of the core stack.
-
75.发明公开公开(公告)号：US20230274880A1
公开(公告)日：2023-08-31
申请号：US17724618
申请日：2022-04-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jian Yao , Denghao Fan , Alan G. Holmes , Yusheng Zou , Thomas W. Nehl
CPC classification number: H01F41/0286 , H02K15/03
Abstract: A method of manufacturing a permanent magnet for a rotor of an axial flux electric machine is described herein. The method includes forming multiple permanent magnet (PM) pieces to have the same shape. Each of the PM pieces has an inner radial surface, an outer radial surface, and a pair of side surfaces extending between the inner and outer radial surfaces. The method further includes attaching at least one of the side surfaces of each of the PM pieces to one of the side surfaces of another one of the PM pieces to form partitions configured to extend in a radial direction of the rotor.
-
Patent Agency Ranking
76.发明申请公开(公告)号：US20230018618A1
公开(公告)日：2023-01-19
申请号：US17375101
申请日：2021-07-14
Applicant: GM Global Technology Operations LLC
Inventor： Alireza Fatemi , Mohammad F. Momen , Thomas W. Nehl
Abstract: An electric machine includes a housing, a rotor rotatably mounted to the housing, and a stator mounted to the housing about the rotor. The stator includes a stator body formed from a plurality of laminations. The plurality of laminations include an outer annular surface defining a radius, an inner annular surface spaced from the rotor, and a plurality of radially inwardly extending stator teeth spaced one from another by plurality of gaps. Each of the plurality of gaps extend along the radius and include an opening exposed at the inner annular surface. The opening has a first side portion and a second side portion each extending at an angle relative to the radius.
-
公开(公告)号：US11451123B2
公开(公告)日：2022-09-20
申请号：US17083747
申请日：2020-10-29
Applicant: GM Global Technology Operations LLC
Inventor： Alireza Fatemi , Thomas W. Nehl , Derek F. Lahr
Abstract: An electric machine includes a stator and a rotor positioned in operational engagement with one another and defining a radial gap extending circumferentially between the stator and the rotor, the rotor including a plurality of rotor segments defining a plurality of segment gaps between adjacent pairs of the plurality of rotor segments, the rotor segments radially moveable relative to the stator, wherein movement of the plurality of rotor segments radially outward increases the radial gap between the stator and the rotor and the segment gaps between adjacent pairs of the plurality of rotor segments.
-
公开(公告)号：US20220216756A1
公开(公告)日：2022-07-07
申请号：US17702848
申请日：2022-03-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Thomas W. Nehl , Alireza Fatemi
IPC: H02K3/14 , H02K1/16 , H02K1/276 , H02K3/02 , H02K3/34 , H02K15/03 , H02K15/06 , H02K15/10 , B60K1/00 , H02K7/00
Abstract: Presented are segmented hairpin bar conductors for electric machines, methods for making/using such segmented bar conductors, electromagnetic motors using such segmented bar conductors, and vehicles equipped with an induction motor generator unit using segmented hairpin bar conductors. An electric machine includes a stator that defines multiple circumferentially spaced, radially elongated stator slots. A rotor is located adjacent and movable with respect to the stator. One or more permanent magnets are mounted to the rotor, and one or more U-shaped hairpin windings are mounted to the stator in juxtaposed spaced relation to the magnet(s). Each hairpin winding is formed from an array of collimated, electrically conductive wires that are bundled together into a unitary bar conductor. The segmented hairpin winding has a pair of hairpin legs, each of which adjoins and projects from a respective end of a hairpin crown. Each hairpin leg inserts into a respective one the stator slots.
-
公开(公告)号：US20220037944A1
公开(公告)日：2022-02-03
申请号：US16944578
申请日：2020-07-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Anil K. Sachdev , Thomas W. Nehl
Abstract: A method for constructing a lamination for a rotary electric machine includes forming an annular lamination from a ferrous core material having a first relative magnetic permeability. The lamination defines through-openings, e.g., for permanent magnets or conductors. Peripheral bridges of the core material extend between the through-openings and an outer or inner diameter surface of the lamination. The method includes diffusing an alloy material having a second relative magnetic permeability into the bridges to form austenitic bridges, with the second relative magnetic permeability being less than the first relative magnetic permeability. A rotary electric machine includes a stator and rotor. A vehicle includes a rotary electric machine connected to the battery pack and to road wheels, and having a rotor and/or a stator constructed in accordance with the method.
-
公开(公告)号：US20210402887A1
公开(公告)日：2021-12-30
申请号：US16915296
申请日：2020-06-29
Applicant: GM Global Technology Operations LLC
Inventor： Rashmi Prasad , Chandra S. Namuduri , Suresh Gopalakrishnan , Thomas W. Nehl
Abstract: A method of controlling fast charging of at least one battery pack within a high voltage electrical propulsion system includes identifying an operating condition, wherein the operating condition is one of charging mode and propulsion mode, and, when the electrical system is in charging mode, initiating charging of the at least one battery pack, terminating charging of the at least one battery pack and connecting the at least one battery pack to power components of the electrical propulsion system when there is a request to terminate charging of the at least one battery pack, and terminating charging of the at least one battery pack and connecting the at least one battery pack to power components of the electrical propulsion system when there is no request to terminate charging of the at least one battery pack and the charging of the at least one battery pack is complete.
-
-
-
-
-
-
-
-
-
Search Results
128
records
(took 0.018 seconds)
