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    DETECTING WELDED RELAY CONTACTS USING SPANNER VOLTAGE MEASUREMENT
    1.
    发明申请
    DETECTING WELDED RELAY CONTACTS USING SPANNER VOLTAGE MEASUREMENT 有权

    公开(公告)号：US20240426915A1

    公开(公告)日：2024-12-26

    申请号：US18338960

    申请日：2023-06-21

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： David Elmiger ,  Kyle B. Adkins ,  Andrew E. Carlson ,  David M. Messersmith

    IPC: G01R31/327 ,  H01H47/00

    Abstract: A system includes a relay system and a controller. The relay system includes a plurality of relays, each having a first contact on an input side of the respective relay, the input side coupled to a power source, a second contact on a load side of the respective relay coupled to a load, and a spanner configured to close the first and second contacts of the respective relay when activated by a close signal. The load sides of each of the respective relays are coupled through their respective loads. The controller is configured to measure a voltage between a spanner of a first relay and an input side of a second relay. Based on the voltage between the spanner of the first relay and the input side of the second relay, the controller determines whether an electrical weld of one of the contacts of the first relay exists.

    Systems and methods for detecting welded contacts in an electromagnetic switch system
    2.
    发明授权
    Systems and methods for detecting welded contacts in an electromagnetic switch system 有权

    公开(公告)号：US11901145B2

    公开(公告)日：2024-02-13

    申请号：US17485734

    申请日：2021-09-27

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Kyle B. Adkins ,  Andrew E. Carlson ,  David M. Messersmith ,  David Elmiger

    IPC: H02P1/10 ,  H01H47/00 ,  H01H50/18 ,  H01H50/44

    CPC classification number: H01H47/002 ,  H01H50/18 ,  H01H50/44

    Abstract: A non-transitory, computer-readable medium may include instructions executable by at least one processor in a computing device to cause the processor to perform operations that include transmitting, to a first power source, a command to provide power to a coil of a switching device with a fixed current profile. The operations also include receiving one or more voltage measurements associated with the coil during a period of time, determining whether the voltage measurements associated with the coil indicate that one or more movable contacts of the switching device are at least partially welded to one or more contacts of an electric circuit, and transmitting an additional command to a second power source to disconnect a current to the coil in response to determining that the voltage measurements indicate that the movable contacts of the switching device are at least partially welded to the contacts of the electric circuit.

    Systems and methods for controlling contactor bounce
    3.
    发明授权
    Systems and methods for controlling contactor bounce 有权

    公开(公告)号：US11462345B2

    公开(公告)日：2022-10-04

    申请号：US16587988

    申请日：2019-09-30

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Andrew E. Carlson ,  Kyle B. Adkins

    IPC: H01F7/06 ,  H01H47/00 ,  H01H47/22 ,  H01H50/18 ,  H01H50/44 ,  H01H50/54

    Abstract: A relay device may include an armature that moves between a first position that electrically couples the armature to a first contact and a second position that electrically couples the armature to a second contact. The relay device may also include a relay coil that receives a voltage to magnetize the relay coil, thereby causing the armature to move from the first position to the second position. The relay device also includes an additional coil that couples in series with the relay coil via a switch. The relay device also includes a drive circuit that causes the switch to couple the additional coil to the relay coil in response to receiving a signal indicative of the relay coil energizing.

    RELAY COIL DRIVE CIRCUIT
    4.
    发明申请
    RELAY COIL DRIVE CIRCUIT 有权

    公开(公告)号：US20210096185A1

    公开(公告)日：2021-04-01

    申请号：US16587968

    申请日：2019-09-30

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Kyle B. Adkins ,  Andrew E. Carlson

    IPC: G01R31/327 ,  H01H9/56 ,  H01H9/16 ,  H01H47/00 ,  H01H47/02 ,  H01H47/22 ,  H02P1/10 ,  H03K17/18

    Abstract: A relay device may include an armature that moves between a first position that electrically couples the armature to a first contact and a second position that electrically couples the armature to a second contact. The relay device may also include a relay coil that receives a voltage to magnetize the relay coil, thereby causing the armature to move from the first position to the second position. The relay device may also include a drive circuit that couple the voltage to the relay coil, such that the voltage is higher than a rated voltage associated with the relay coil.

    DETECTING WELDED RELAY CONTACTS USING ELECTRICAL PULSE
    6.
    发明申请
    DETECTING WELDED RELAY CONTACTS USING ELECTRICAL PULSE 有权

    公开(公告)号：US20240426912A1

    公开(公告)日：2024-12-26

    申请号：US18338870

    申请日：2023-06-21

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： David Elmiger ,  Kyle B. Adkins ,  Andrew E. Carlson ,  David M. Messersmith

    IPC: G01R31/327

    Abstract: A system includes a relay system and a controller. The relay system includes a plurality of relays. The controller is configured to transmit a close signal to a first relay of the plurality of relays, and to transmit a pulse signal to a second relay of the plurality of relays. The pulse signal is configured to have a sufficient electrical magnitude and duration to close the second relay when the second relay has an electrical weld, and to have an insufficient electrical magnitude and duration to close the first contact and the second contact of the second relay when the second relay has no electrical weld. The controller is also configured to measure a current flow through the second relay in response to the pulse signal; and based on the current flow through the second relay, determine whether the electrical weld exists in the second relay.

    Hybrid circuit breaker with solid-state devices
    7.
    发明授权
    Hybrid circuit breaker with solid-state devices 有权

    公开(公告)号：US12160098B2

    公开(公告)日：2024-12-03

    申请号：US17889199

    申请日：2022-08-16

    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

    Inventor： Andrew E. Carlson ,  Kyle B. Adkins ,  Randall S. Langer ,  David Elmiger ,  Aiman Kerim ,  James P. Miller

    IPC: H02H3/20 ,  H01H1/20 ,  H01H9/54

    Abstract: This disclosure describes a hybrid circuit breaker for an industrial automation system including a mechanical switch and solid-state switching circuit. The hybrid circuit breaker may receive control signals to open and close a current path based on moving a spanner of the mechanical switch. In some cases, moving the spanner of the mechanical switch may generate electrical arcs when the hybrid circuit breaker is conducting electrical current. In such cases, the hybrid circuit breaker may remove the electrical arcs based on operations of the solid-state switching circuit. The solid-state switching circuit may draw arc currents of the electrical arcs by providing a second current path between the spanner and a fixed conductor of the mechanical switch. Moreover, the solid-state switching circuit may open the second current path and absorb electrical power of the electrical arc by one or more solid-state switches, a parallel voltage suppressor, or both.

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