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1.发明公开公开(公告)号：US20230369948A1
公开(公告)日：2023-11-16
申请号：US17743928
申请日：2022-05-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vinod Chowdary Peddi , Song He
Abstract: A method to suppress tonal noises over a wide speed range in an alternating current electric machine by current injection and voltage injection is provided. The method includes, within a computerized processor, monitoring a position sensor measuring a current electric machine frequency of the electric machine, comparing the current electric machine frequency to a sampling frequency of the position sensor, and operating one of a current injection mode and a voltage injection mode to suppress the tonal noises in the electric machine based upon the comparing.
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2.发明授权公开(公告)号：US11658525B2
公开(公告)日：2023-05-23
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
CPC classification number: H02K1/185 , H02K1/20 , H02K9/19 , H02K11/014 , H02K15/028 , 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.
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公开(公告)号：US20210037665A1
公开(公告)日：2021-02-04
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
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.
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公开(公告)号：US20230326444A1
公开(公告)日：2023-10-12
申请号：US17718964
申请日：2022-04-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. SACHDEV , Arianna T. Morales , Song He
IPC: G10K11/168 , B23P15/00
CPC classification number: G10K11/168 , B23P15/00
Abstract: A cover for a housing includes a cast plate-like member having a top side and a bottom side with a plurality of raised ribs on the bottom side, the plurality of raised ribs defining a plurality of spaces therebetween. A noise insulating material is provided in at least some of the plurality of spaces. A sheet metal plate is adhered to a top of the plurality of raised ribs by an adhesive.
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公开(公告)号：US11611305B2
公开(公告)日：2023-03-21
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
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.
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Patent Agency Ranking
公开(公告)号：US11594921B2
公开(公告)日：2023-02-28
申请号：US16710787
申请日：2019-12-11
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Peng Zhang , Song He , Michael C. Muir
Abstract: A rotor assembly for an electric machine, e.g., of an electrified powertrain, includes a rotor having inner and outer diameter surfaces, and a rotor shaft connected to and surrounded by the rotor. The rotor has equally-spaced rotor magnetic poles each having a quadrature-axis (“q-axis”) and a pair of direct-axes (“d-axes”). At each of magnetic pole of the rotor, the rotor defines at least three arcuate notches, including a center notch bisected by the q-axis and a pair of additional arcuate notches symmetrically flanking the center notch. The rotor may include embedded permanent magnets, which may be arranged in a dual V-shaped configuration. Each additional notch may be positioned within a sweep of a top-layer opening angle of the magnets. The center notch and/or the pair of additional notches may define tangentially-continuous fillets which smoothly transition the notch into the outer diameter surface.
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公开(公告)号：US10680472B1
公开(公告)日：2020-06-09
申请号：US16214795
申请日：2018-12-10
Applicant: GM Global Technology Operations LLC
Inventor： Pavan Kumar Patruni , Song He , Edward L. Kaiser , Mithun Sunny
Abstract: A stator for an electromagnetic machine includes a first lamination stack defining a first cavity therein and having a central longitudinal axis. The first lamination stack includes a first plurality of mounting ears disposed opposite the first cavity and each spaced apart from one another about the central longitudinal axis. The stator further includes a second lamination stack abutting the first lamination stack and defining a second cavity therein aligned with the first cavity along the central longitudinal axis. The second lamination stack includes a second plurality of mounting ears disposed opposite the second cavity and each spaced apart from the first plurality of mounting ears and from one another about the central longitudinal axis. An electromagnetic machine including the stator and a device including the electromagnetic machine are also described.
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公开(公告)号：US20200083764A1
公开(公告)日：2020-03-12
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
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.
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公开(公告)号：US12249309B2
公开(公告)日：2025-03-11
申请号：US17873278
申请日：2022-07-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Song He , Arianna T. Morales , Anil K. Sachdev , Pavan Kumar Patruni , Hung-yih Isaac Du
IPC: G10K11/162 , B60R13/08
Abstract: A damping panel includes a first metal and a second metal. The first metal has a first surface and a second surface opposite the first surface. The second metal portion has a third surface and a fourth surface opposite the third surface. A fixed region is where the second surface of the first metal is fixed to the third surface of the second metal. A non-fixed region is where the second surface is not fixed to the third surface. A cavity is disposed between the second surface and the third surface at the non-fixed region. A damping material is disposed on at least one of: at least a portion of the cavity on the second surface, at least a portion of the cavity on the third surface, at least a portion of the first surface, and at least a portion of the fourth surface.
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公开(公告)号：US12119763B2
公开(公告)日：2024-10-15
申请号：US17979215
申请日：2022-11-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vinod Chowdary Peddi , Cheng Gong , Le Chang , Song He
Abstract: A propulsion system for a device includes an electric motor configured to generate torque to propel the device. A controller is in communication with the electric motor and is adapted to select at least one harmonic order for a harmonic current command. The controller is adapted to define a plurality of operating regions, including a first operating region, a second operating region and a third operating region, each associated with a respective objective function for generating the harmonic current command. The controller is adapted to operate the harmonic current command with four degrees of freedom by selectively varying a q-axis current magnitude, a d-axis current magnitude, a q-axis phase and a d-axis phase as a function of the torque and a motor speed.
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