公开(公告)号：US20220368184A1

公开(公告)日：2022-11-17

申请号：US17317088

申请日：2021-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Song He ,  Peng Zhang ,  Michael C. Muir ,  Yew Sum Leong

IPC: H02K1/28 ,  H02K1/27 ,  H02K15/02

Abstract: An electric machine may include a rotor having a notch at each pole wherein each notch is skewed by some mechanical angle. Notches may fluidly couple one end of the rotor to the other end of the rotor and provide pumping functionality for fluid therein.

公开(公告)号：US20220131490A1

公开(公告)日：2022-04-28

申请号：US17078346

申请日：2020-10-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vinod Chowdary Peddi ,  Anno Yoo ,  Brent S. Gagas ,  Song He

IPC: H02P23/30 ,  H02P6/10 ,  H02P23/04 ,  H02P27/06 ,  H02K7/00

Abstract: A method for controlling operation of a rotary electric machine includes receiving, via a bandwidth-partitioning harmonic compensation regulator (HCR) of a controller, a commanded torque and rotational speed of the electric machine, and calculating, via the HCR in response to enabling conditions, a dq harmonic compensation current and a dq harmonic compensation voltage for one or more predetermined harmonic orders using the commanded torque and the rotational speed. The harmonic compensation current and voltage cancel torque ripple and current ripple in the one or more predetermined harmonic orders. The method may include injecting an acoustic tone at a predetermined harmonic order. The method additionally includes adding the dq harmonic compensation current and voltage to a dq current and voltage command, respectively, to generate adjusted dq current and voltage commands. The electric machine is then controlled using the adjusted dq current and voltage commands.

公开(公告)号：US20220115922A1

公开(公告)日：2022-04-14

申请号：US17066520

申请日：2020-10-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anthony M. Coppola ,  Alireza Fatemi ,  William T. Ivan ,  Song He ,  Yew Sum Leong

IPC: H02K1/18 ,  H02K1/20 ,  H02K9/19 ,  H02K11/01 ,  H02K15/02 ,  H02K15/12

Abstract: An electric motor assembly includes a housing having a generally cylindrical inner surface defining a generally cylindrical cavity within the housing, a stator operatively disposed within the generally cylindrical cavity, the stator including a plurality of stacked laminations wherein each lamination has an outer circumferential edge and a plurality of finger elements extending inward, and a layer of polymer disposed between a generally cylindrical outer surface of the stator and the generally cylindrical inner surface of the housing, such that the stator is fastened to the housing by the polymer. A method of manufacturing the electric motor assembly includes disposing a stator within a housing such that a gap is defined between the stator and the housing and the stator is not directly connected to the housing, and substantially filling the gap with a polymer capable of fastening the stator to the housing by only the polymer.

公开(公告)号：US11116097B2

公开(公告)日：2021-09-07

申请号：US16528848

申请日：2019-08-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Song He ,  Seongchan Pack ,  Angela P. Willis

IPC: H05K5/03 ,  G10K11/168 ,  B60R16/02 ,  B32B5/18 ,  B32B15/04 ,  B32B15/20 ,  H05K7/20

Abstract: A damping cover for an integrated power electronics module (IPEM), the damping cover generally defined by a top side and a bottom side, wherein the bottom side is configured to mate adjacent with or contiguous to a power inverter module (PIM) of the IPEM. The damping cover can include an aluminum foam core including a top surface generally corresponding to the top side of the damping cover and a bottom surface generally corresponding to the bottom side of the damping cover and a polymeric over-molding or non-porous aluminum outer layer covering the top surface and/or a polymeric over-molding or non-porous aluminum outer layer covering the bottom surface. The bottom side of the damping cover can mate adjacent with or contiguous to the PIM. The polymeric material over-molding can completely impregnate the aluminum foam core. The aluminum foam core can have a density of about 0.15 g/cm3 to about 1.0 g/cm3.

公开(公告)号：US10658889B2

公开(公告)日：2020-05-19

申请号：US16128632

申请日：2018-09-12

Applicant: GM Global Technology Operations LLC

Inventor： Xuan Q. Tran ,  Edward L. Kaiser ,  Song He

IPC: H02K5/24 ,  H02K1/18 ,  H02K1/20

Abstract: An electromagnetic machine includes a motor housing defining a cavity therein, and a stator disposed within the cavity. The stator has an external surface and a plurality of mounting ears each configured to receive a fastener and extending from the external surface towards the motor housing. The assembly includes a tunable insert ring disposed between the motor housing and the stator. The tunable insert ring and the stator define at least one cooling channel therebetween. The tunable insert ring encircles the external surface and includes a plurality of projections each extending towards and disposed in contact with the stator to thereby stiffen the electromagnetic machine and minimize vibration of the stator within the motor housing. A device including the electromagnetic machine is also described.

公开(公告)号：US10319360B1

公开(公告)日：2019-06-11

申请号：US15913412

申请日：2018-03-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Song He ,  Yo Chan Son ,  Gilsu Choi ,  Caleb W. Secrest ,  Aja Anjilivelil ,  Scott M. Reilly ,  John P. Miller

IPC: G10K11/175

Abstract: In various embodiments, methods, systems, and vehicles are provided for masking a tonal noise of a motor. In certain embodiments, a vehicle includes a drive system and an active masking acoustic signal generator (AMAG). The drive system includes a motor generating a tonal noise. The AMAG is configured to at least facilitate masking the tonal noise, by introducing a complementary harmonic tone, injecting dithering into the motor, or both.

公开(公告)号：US20190172441A1

公开(公告)日：2019-06-06

申请号：US15831994

申请日：2017-12-05

Applicant: GM Global Technology Operations LLC

Inventor： Frank C. Valeri ,  Scott M. Reilly ,  John Miller ,  Song He

IPC: G10K11/24 ,  B60K6/405 ,  B60K7/00

Abstract: A powertrain component for a vehicle including a housing, and a mechanical system arranged in the housing. The mechanical system provides motive power to the vehicle. A passive sound enhancement system includes a bracket mounted to the housing. The bracket is selectively tuned to respond to one or more selected frequencies of the powertrain component.