Patents by Inventor Wen Ouyang
Wen Ouyang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11935049Abstract: Provided is a graph data processing method, including: acquiring a degree of association of each node in a network graph; splitting the network graph to obtain a dense subgraph according to the degree of association of each node; determining stable nodes in the network graph and coreness of the stable nodes based on the dense subgraph, the coreness of the stable nodes being greater than a preset threshold; obtaining a sparse subgraph in the network graph according to the preset threshold, and remaining nodes in the network graph other than the stable nodes and connecting edges between the remaining nodes; and determining the coreness of each node in the sparse subgraph based on the sparse subgraph and the stable nodes.Type: GrantFiled: September 20, 2022Date of Patent: March 19, 2024Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Jie Xu, Xiaosen Li, Wen Ouyang, Pin Xiao, Yangyu Tao
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Publication number: 20230056760Abstract: A graph data processing method includes acquiring a directed graph, where a directed edge in the directed graph is represented as pointing to a destination vertex from a start vertex; representing the directed edge in a unified form according to a specified order between a vertex identifier of the start vertex and a vertex identifier of the destination vertex; generating a tagged edge for recording an original edge direction of the directed edge, to obtain a tagged directed graph; and identifying a category of a triangle constituted by a vertex in the tagged directed graph, a neighbor vertex of the vertex, and a common vertex commonly adjacent to the vertex and the neighbor vertex, based on tagged edges between two of the vertex, the neighbor vertex, and the common vertex.Type: ApplicationFiled: October 31, 2022Publication date: February 23, 2023Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LTDInventors: Jie XU, Xiaosen LI, Wen OUYANG, Pin XIAO, Yangyu TAO
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Publication number: 20230033019Abstract: This application belongs to the technical field of artificial intelligence, and particularly relates to a data processing method, a data processing apparatus, a computer-readable medium, and an electronic device.Type: ApplicationFiled: October 12, 2022Publication date: February 2, 2023Inventors: Xiaosen LI, Jie XU, Wen OUYANG, Yangyu TAO, Pin XIAO
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Publication number: 20230013392Abstract: Provided is a graph data processing method, including: acquiring a degree of association of each node in a network graph; splitting the network graph to obtain a dense subgraph according to the degree of association of each node; determining stable nodes in the network graph and coreness of the stable nodes based on the dense subgraph, the coreness of the stable nodes being greater than a preset threshold; obtaining a sparse subgraph in the network graph according to the preset threshold, and remaining nodes in the network graph other than the stable nodes and connecting edges between the remaining nodes; and determining the coreness of each node in the sparse subgraph based on the sparse subgraph and the stable nodes.Type: ApplicationFiled: September 20, 2022Publication date: January 19, 2023Inventors: Jie XU, Xiaosen LI, Wen OUYANG, Pin XIAO, Yangyu TAO
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Publication number: 20220181931Abstract: In an example, a rotor for an electric motor includes an inner hub, an outer rim, and a plurality of slats. Each slat of the plurality of slats has a first end at the inner hub and a second end at the outer rim. The rotor is configured to drive a plurality of propeller blades that provide force for an aerial vehicle. Additionally or alternatively, a rotor for an electric motor includes a housing that includes a first retaining structure and a second retaining structure that are configured to apply a force that is directed radially outward against a magnet to hold the magnet against the housing. The rotor is configured to drive a plurality of propeller blades that provide force for an aerial vehicle.Type: ApplicationFiled: October 19, 2021Publication date: June 9, 2022Inventors: Kang Li, Edward C. Lovelace, Wen Ouyang
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Patent number: 11183322Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.Type: GrantFiled: April 20, 2018Date of Patent: November 23, 2021Assignee: ABB Schweiz AGInventors: Harish Suryanarayana, Jiaqi Liang, Jukka Pekka Kittila, Wen Ouyang
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Patent number: 10804781Abstract: An electrical machine includes a stator and a rotor in magnetic communication with the stator. The rotor has a cage construction, the rotor having a plurality of passages extending therethrough from a first end of the rotor to a second end of the rotor. A rotor cage has two end rings, one of the end rings disposed at each of the first end and the second end of the rotor, and having a plurality of conductor bars extending through the rotor from the first end to the second end and coupled with the end rings. The conductor bars each include a transition region adjacent to each end ring, and a central region disposed between the two transition regions. Each transition region includes at least one conductor bar dimension that increases proximate the end rings.Type: GrantFiled: December 21, 2018Date of Patent: October 13, 2020Assignee: ABB Schweiz AGInventors: Wen Ouyang, Colin Tschida
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Patent number: 10498279Abstract: A electromagnetic machine system includes a rotor and a stator positioned about the rotor. A current injection mechanism is coupled with windings of the stator and structured to inject electrical currents therein so as to change a flux distribution of a magnetic field produced by the stator. The injected currents may be harmonic currents. The rotor further includes an inductor positioned to interact with the magnetic field when the flux distribution is changed, to produce an electrical excitation current for exciting windings in the rotor. The machine system may be a synchronous motor or generator, and may be brushless. Applications of the current injection strategy to direct torque control and vector control are also disclosed.Type: GrantFiled: November 23, 2015Date of Patent: December 3, 2019Assignee: ABB Schweiz AGInventors: Wen Ouyang, Jun Li, Hongrae Kim
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Patent number: 10468952Abstract: A permanent magnet machine with a hybrid cage and methods for operating same are disclosed. According to one aspect, the subject matter described herein includes a rotor and hybrid cage for an electrical machine, the rotor comprising a rotor body having a central axis and including a plurality of permanent magnets positioned to create a plurality of rotor magnetic poles distributed around a peripheral surface of the rotor. The rotor also includes a hybrid cage that includes conductive loops around each of the rotor magnetic poles, where the conductive loops are controllable to form a closed circuit or an open circuit around each of the rotor magnetic poles.Type: GrantFiled: November 20, 2013Date of Patent: November 5, 2019Assignee: ABB Schweiz AGInventors: Darren Dale Tremelling, Wen Ouyang
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Patent number: 10374543Abstract: A synchronous machine system comprising a synchronous motor including a stator, stator winding, rotor, and field winding; an AC power supply circuit structured to transmit current to or from the stator winding of the synchronous motor at a controlled frequency and transmit current to or from a power source at a controlled frequency; a DC exciter unit structured to receive power from a power source, convert the received power to DC power at a desired voltage, and supply the converted power across a DC bus to the field winding of the synchronous motor; and an energy storage circuit coupled to the DC bus of the DC exciter unit having at least one ultracapacitor, and structured to receive power from a power source, to charge the ultracapacitor, and to provide power to the field winding of the synchronous motor following a power failure.Type: GrantFiled: August 29, 2015Date of Patent: August 6, 2019Assignee: ABB Schweiz AGInventors: Jun Li, Zhiguo Pan, Wen Ouyang, Ora Veli-Matti Leppänen, Darren Tremelling
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Publication number: 20190238034Abstract: An electrical machine includes a stator and a rotor in magnetic communication with the stator. The rotor has a cage construction, the rotor having a plurality of passages extending therethrough from a first end of the rotor to a second end of the rotor. A rotor cage has two end rings, one of the end rings disposed at each of the first end and the second end of the rotor, and having a plurality of conductor bars extending through the rotor from the first end to the second end and coupled with the end rings. The conductor bars each include a transition region adjacent to each end ring, and a central region disposed between the two transition regions. Each transition region includes at least one conductor bar dimension that increases proximate the end rings.Type: ApplicationFiled: December 21, 2018Publication date: August 1, 2019Inventors: Wen Ouyang, Colin Tschida
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Patent number: 10097123Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.Type: GrantFiled: October 6, 2017Date of Patent: October 9, 2018Assignee: ABB Schweiz AGInventors: Ghanshyam Shrestha, Darren Tremeling, Waqas Arshad, Wen Ouyang, Jan Westerlund
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Publication number: 20180241300Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.Type: ApplicationFiled: April 20, 2018Publication date: August 23, 2018Inventors: Harish Suryanarayana, Jiaqi Liang, Jukka Pekka Kittila, Wen Ouyang
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Patent number: 9985483Abstract: One embodiment is a unique Vernier machine comprising a rotor and a stator. The rotor comprises a back portion and a plurality of permanent magnets. The stator comprises a plurality of ferromagnetic arm structures, a plurality of ferromagnetic pole structures extending from each of the ferromagnetic arm structures in a direction toward the permanent magnets, and a plurality of conductive windings disposed about respective ones of the plurality of ferromagnetic arm structures. The ferromagnetic pole structures are structured to collect magnetic flux from the permanent magnets. The ferromagnetic pole structures of each of said ferromagnetic arm structures are spaced apart from one another according to a non-uniform pattern such that the ferromagnetic pole structures of a given ferromagnetic arm structure have substantially the same angular position relative to the permanent magnets radially opposite from the ferromagnetic pole structures of the given ferromagnetic arm structure.Type: GrantFiled: May 24, 2016Date of Patent: May 29, 2018Assignee: ABB Schweiz AGInventors: Wen Ouyang, Varagur Ramanan
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Patent number: 9979273Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.Type: GrantFiled: May 19, 2016Date of Patent: May 22, 2018Assignee: ABB Schweiz AGInventors: Harish Suryanarayana, Jiaqi Liang, Jukka-Pekka Kittila, Wen Ouyang
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Publication number: 20180034396Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.Type: ApplicationFiled: October 6, 2017Publication date: February 1, 2018Inventors: Ghanshyam Shrestha, Darren Tremeling, Waqas Arshad, Wen Ouyang, Jan Westerlund
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Publication number: 20170346352Abstract: One embodiment is a unique Vernier machine comprising a rotor and a stator. The rotor comprises a back portion and a plurality of permanent magnets. The stator comprises a plurality of ferromagnetic arm structures, a plurality of ferromagnetic pole structures extending from each of the ferromagnetic arm structures in a direction toward the permanent magnets, and a plurality of conductive windings disposed about respective ones of the plurality of ferromagnetic arm structures. The ferromagnetic pole structures are structured to collect magnetic flux from the permanent magnets. The ferromagnetic pole structures of each of said ferromagnetic arm structures are spaced apart from one another according to a non-uniform pattern such that the ferromagnetic pole structures of a given ferromagnetic arm structure have substantially the same angular position relative to the permanent magnets radially opposite from the ferromagnetic pole structures of the given ferromagnetic arm structure.Type: ApplicationFiled: May 24, 2016Publication date: November 30, 2017Inventors: Wen Ouyang, Varagur Ramanan
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Publication number: 20170338730Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.Type: ApplicationFiled: May 19, 2016Publication date: November 23, 2017Inventors: Harish Suryanarayana, Jiaqi Liang, Jukka-Pekka Kittila, Wen Ouyang
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Patent number: 9813004Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.Type: GrantFiled: January 16, 2015Date of Patent: November 7, 2017Assignee: ABB Schweiz AGInventors: Ghanshyam Shrestha, Darren Tremelling, Waqas Arshad, Wen Ouyang, Jan Westerlund
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Publication number: 20170161750Abstract: An identity authentication method, terminal device and system are provided. A terminal device scans a two-dimensional code after receiving a two-dimensional code scanning instruction. After receiving the two-dimensional code scanning instruction, the terminal device automatically opens a biometric information acquisition function, and acquires the biometric information of a user currently operating the terminal device. Identity authentication is performed on the biometric information, to determine whether the user has an operation authority corresponding to the two-dimensional code.Type: ApplicationFiled: February 13, 2017Publication date: June 8, 2017Applicant: Tencent Technology (Shenzhen) Company LimitedInventors: Longyang YAO, Zhangqun FAN, Wen OUYANG, Runqian ZHAO