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    OVERVOLTAGE/CURRENT DETECTION AND PROTECTION IN A WIRELESS POWER SYSTEM
    1.
    发明申请
    OVERVOLTAGE/CURRENT DETECTION AND PROTECTION IN A WIRELESS POWER SYSTEM 有权

    公开(公告)号：US20250038513A1

    公开(公告)日：2025-01-30

    申请号：US18782157

    申请日：2024-07-24

    Applicant: Solace Power Inc.

    Inventor： Samer ALDHAHER ,  Mark HICKEY ,  Samuel Robert COVE ,  Jonathan DAWE ,  Paul ARSENAULT

    IPC: H02H3/02 ,  H02H3/06 ,  H02H3/08 ,  H02H3/20 ,  H02H7/22 ,  H02J50/05 ,  H02J50/12

    Abstract: An overcurrent detection circuit for use in a transmitter of a wireless power transfer system is provided. The transmitter comprises a transmitter element for generating a field to transfer power to a receiver of a wireless power transfer system. The circuit is adapted to shut down a transmitter of a wireless power transfer system in response to a detected short circuit event. An overvoltage protection circuit for use in a receiver of a wireless power transfer system is also provided. The receiver comprises a receiver element for extracting power from a field generated by a transmitter of a wireless power transfer system, and a switching element electrically connected to the receiver element. The overvoltage protection circuit is adapted to electrically ground the switching element based on an overvoltage event.

    CIRCUIT BREAKER AND METHOD
    2.
    发明申请
    CIRCUIT BREAKER AND METHOD 有权

    公开(公告)号：US20240404766A1

    公开(公告)日：2024-12-05

    申请号：US18696497

    申请日：2022-09-05

    Applicant: Siemens Aktiengesellschaft

    Inventor： Marvin Tannhäuser

    IPC: H01H9/54 ,  H02H3/02 ,  H02H3/06 ,  H02H3/08

    Abstract: A circuit breaker protecting electric low-voltage circuits includes a housing with grid and load-side connections and a mechanical isolating contact unit connected to an electronic interruption unit. The isolating contact unit pairs with load-side, and the electronic interruption unit pairs with grid-side, connections. The isolating contact unit switches by opening contacts preventing, or closing contacts permitting, current flow in the low-voltage circuit. The electronic interruption unit switches to high-ohmic state of semiconductor-based switch elements preventing, or low-ohmic state permitting, current flow in the low-voltage circuit. Current level in the low-voltage circuit is ascertained. Current flow prevention in the low-voltage circuit initiates upon exceeding current and/or current/time thresholds. With contacts closed and the electronic interruption unit switched to high-ohmic state, the electronic interruption unit switches to low-ohmic state for a first duration checking circuit breaker functionality.

    Resettable electronic fuse for high-power devices
    5.
    发明授权
    Resettable electronic fuse for high-power devices 有权

    公开(公告)号：US11967817B2

    公开(公告)日：2024-04-23

    申请号：US17051504

    申请日：2020-07-17

    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

    Inventor： Jeffrey M. Brozek ,  Benjamin Tesch ,  Chien-Chih Chao

    IPC: H02H3/087 ,  H02H3/06 ,  H02H5/04 ,  H02H7/18

    CPC classification number: H02H3/087 ,  H02H5/047 ,  H02H7/18 ,  H02H3/066

    Abstract: A resettable electronic fuse for a high-power device such as a power tool, a battery pack for the power tool, or a battery pack charger. The resettable electronic fuse is connected in a current path of the device and is operable or configured to selectively interrupt current through the resettable electronic fuse based on a detected condition of the device (e.g., a detected fault condition of the device). The resettable electronic fuse is also configured to be reset after a detected fault condition has ended. In some embodiments, the resettable electronic fuse is configured to reset itself. In other embodiments, the resettable electronic fuse is configured to receive a signal (e.g., from a device controller) to reset.

    Undervoltage protection and control circuit for electronic switches
    7.
    发明授权
    Undervoltage protection and control circuit for electronic switches 有权

    公开(公告)号：US11831148B2

    公开(公告)日：2023-11-28

    申请号：US17465528

    申请日：2021-09-02

    Applicant: Infineon Technologies AG

    Inventor： Michael Asam

    IPC: H02H3/247 ,  H02H3/06

    CPC classification number: H02H3/247 ,  H02H3/066

    Abstract: A method for operating an electronic switch is described hereinafter. According to one exemplary embodiment, the method (for an electronic switch in the switched on state) comprises detecting whether there is an undervoltage condition at a supply voltage node and providing an undervoltage signal which indicates an undervoltage condition. The method further comprises switching off the electronic switch if the undervoltage signal indicates an undervoltage condition and switching (back) on the electronic switch if the undervoltage signal no longer indicates an undervoltage condition. If the undervoltage signal indicates an undervoltage condition during a switch-on process of the electronic switch, the electronic switch is switched off again and switching back on is prevented for a defined period of time, irrespective of the undervoltage signal. Moreover, a corresponding circuit is described.

    Normally open tie pulse testing
    8.
    发明授权
    Normally open tie pulse testing 有权

    公开(公告)号：US11728638B2

    公开(公告)日：2023-08-15

    申请号：US17489947

    申请日：2021-09-30

    Applicant: S&C Electric Company

    Inventor： Michael John Meisinger, Sr. ,  David Klein

    IPC: H02H3/06 ,  H02H3/08

    CPC classification number: H02H3/06 ,  H02H3/083

    Abstract: A control system and method for tie point fault interrupter and sectionalizing recloser devices in an electrical grid feeder. The technique enables automated sectionalizing reclosers equipped with three-phase current sensing and single- or three-phase voltage sensing, and able to detect pulse-closing operations, to isolate faults and restore load based on pulse count rather than requiring source re-energization and waiting for loss of voltage timers. The system includes a fault interrupter initiating a pulse-testing sequence upon detecting loss of voltage, where a number of preliminary pulses are used to distinguish transient faults from persistent faults, and pulses are counted by the sectionalizing reclosers to determine which of these devices should open. An alternate configuration is disclosed for reinitializing faults, including the fault interrupter closing if initial pulse testing indicates no fault, and subsequent cycles cause a sectionalizing recloser adjacent the fault to open, allowing the fault interrupter to close and hold.

    Method for locating and isolating a fault in a power distribution network
    9.
    发明授权
    Method for locating and isolating a fault in a power distribution network 有权

    公开(公告)号：US11719736B2

    公开(公告)日：2023-08-08

    申请号：US17501136

    申请日：2021-10-14

    Applicant: S&C Electric Company

    Inventor： Boris Marendic ,  Yoav Sharon

    IPC: G01R31/08 ,  H02H3/06 ,  H02H7/26

    CPC classification number: G01R31/086 ,  H02H3/063 ,  H02H7/261

    Abstract: A method for fault location and isolation in a power distribution network, where the network includes a plurality of switching devices provided along a feeder, and at least one of the switching devices does not have voltage sensing capabilities. The method includes detecting an overcurrent event in the network from the fault and interrupting the overcurrent event by opening and then immediately locking out or subsequently reclosing and testing the fault. A count value is increased in each switching device that detected the overcurrent event. A message is sent from each of the switching devices that detected the overcurrent event and then detected the loss of voltage upstream to an upstream neighbor switching device. Current measurements in the messages, measured current by the devices and the counts values in the devices determine what devices are opened to isolate the fault.

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