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公开(公告)号：US20240297558A1
公开(公告)日：2024-09-05
申请号：US18176650
申请日：2023-03-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vinod Chowdary Peddi , Song He
Abstract: A propulsion system for an electric vehicle includes an induction electric motor configured to generate torque for propulsion. The system includes a controller having a processor and tangible, non-transitory memory on which instructions are recorded for a method of suppressing tonal noises in a predefined motor speed range of the electric motor. The controller is adapted to simultaneously inject flux harmonics through respective injections in a rotor reference frame, a first flux reference frame and a second flux reference frame. The rotor reference frame is based in part on a rotor bar order and a rotor position. The first flux reference frame is based in part on a first induction order, the rotor position and a slip position. The second flux reference frame is based in part on a second induction order, the rotor position and the slip position.
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公开(公告)号：US20240154555A1
公开(公告)日：2024-05-09
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
IPC: H02P21/22
CPC classification number: H02P21/22
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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公开(公告)号：US11660969B2
公开(公告)日：2023-05-30
申请号：US17061921
申请日：2020-10-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Song He , Brent S. Gagas , Brian A. Welchko , Kerrie M. Spaven
IPC: B60L50/51 , B60W10/08 , H02P9/44 , H02P25/024 , H02P27/04
CPC classification number: B60L50/51 , B60W10/08 , B60L2210/40 , B60W2520/10 , B60W2720/10 , H02P9/44 , H02P25/024 , H02P27/04
Abstract: Control of an AC motor includes rotation over an operating speed range with the output from an inverter by operating the inverter at switching frequencies that vary in proportion to rotor speed. The operating speed range is parsed into a plurality of speed regions and the switching frequencies within each operating speed region may correspond to a respective pulse ratio that is different from the respective pulse ratio corresponding to an adjacent speed region.
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公开(公告)号：US20220105813A1
公开(公告)日：2022-04-07
申请号：US17061921
申请日：2020-10-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Song He , Brent S. Gagas , Brian A. Welchko , Kerrie M. Spaven
Abstract: Control of an AC motor includes rotation over an operating speed range with the output from an inverter by operating the inverter at switching frequencies that vary in proportion to rotor speed. The operating speed range is parsed into a plurality of speed regions and the switching frequencies within each operating speed region may correspond to a respective pulse ratio that is different from the respective pulse ratio corresponding to an adjacent speed region.
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公开(公告)号：US10985629B2
公开(公告)日：2021-04-20
申请号：US16124906
申请日：2018-09-07
Applicant: GM Global Technology Operations LLC
Inventor： Seongchan Pack , Su Jung Han , Martin S. Kramer , Song He
Abstract: An integrated power electronics component configured for mitigating noise, vibration, and harshness includes a case formed from metal and configured to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction. The case has a first surface and a second surface spaced apart from the first surface, a first stiffness, and a first strength, and the first and second surfaces include a structure defining a plurality of recessions therein. The component includes a cured polymer formed from a composition disposed on at least one of the first and second surfaces in each of the recessions to thereby dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude.
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Patent Agency Ranking
公开(公告)号：US11482895B2
公开(公告)日：2022-10-25
申请号：US16990475
申请日：2020-08-11
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Hongliang Wang , Yew Sum Leong , Song He , Edward L. Kaiser , John S. Agapiou
Abstract: An electric machine may include a substantially annular stator stack having a plurality of laminations which include mounting ears. A fraction of the laminations may be oriented such that the mounting ears are angularly offset from the others. The stator may be secured to a housing at both mounting ear locations thus improving structural rigidity and enhancing performance.
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公开(公告)号：US20210184520A1
公开(公告)日：2021-06-17
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：US20200185982A1
公开(公告)日：2020-06-11
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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19.发明申请公开(公告)号：US20200083778A1
公开(公告)日：2020-03-12
申请号：US16124906
申请日：2018-09-07
Applicant: GM Global Technology Operations LLC
Inventor： Seongchan Pack , Su Jung Han , Martin S. Kramer , Song He
Abstract: An integrated power electronics component configured for mitigating noise, vibration, and harshness includes a case formed from metal and configured to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction. The case has a first surface and a second surface spaced apart from the first surface, a first stiffness, and a first strength, and the first and second surfaces include a structure defining a plurality of recessions therein. The component includes a cured polymer formed from a composition disposed on at least one of the first and second surfaces in each of the recessions to thereby dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude.
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20.发明授权公开(公告)号：US12212190B2
公开(公告)日：2025-01-28
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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