公开(公告)号：US20250020708A1

公开(公告)日：2025-01-16

申请号：US18350183

申请日：2023-07-11

Applicant: ABB Schweiz AG

Inventor： Mohammad Razeghi-Jahromi ,  Moein Choobineh ,  Rostan Rodrigues

IPC: G01R31/08

Abstract: A system and method for detecting high impedance faults (HIFs) in an electrical distribution system may include obtaining a first current signal of a first electrical conductor, determining, based on a time period, a first moving window for the first current signal and a second moving window for a second current signal, determining a first instantaneous phase of the first moving window and a second instantaneous phase of the second moving window, determining a first frequency spectrum and a second frequency spectrum based on the first instantaneous phase and second instantaneous phase respectively, determining an error spectrum corresponding to a difference between points of the first frequency spectrum and the second frequency spectrum respectively, generating an error index based on the error spectrum, and identifying a trigger event at the first electrical conductor based on a comparison between the error index and a reference threshold.

公开(公告)号：US20240071704A1

公开(公告)日：2024-02-29

申请号：US17894740

申请日：2022-08-24

Applicant: ABB Schweiz AG

Inventor： Rostan Rodrigues ,  Pietro Cairoli ,  Utkarsh Raheja

IPC: H01H71/12 ,  H01L29/747 ,  H02H1/00 ,  H02H3/093

CPC classification number: H01H71/123 ,  H01L29/747 ,  H02H1/0007 ,  H02H3/093

Abstract: In one aspect, a solid-state circuit breaker (SSCB) is provided. The SSCB is configured to generate a first output representative of a current through a current path of the SSCB. An analog fault detection circuit is coupled with first output and is configured to assert a second output in response to the current exceeding a trip current level. At least one analog-to-digital converter (ADC) is configured to generate samples of the first output, where the at least one ADC has a di/dt detection bandwidth that is less than a di/dt detection bandwidth of the analog fault detection circuit. The SSCB is further configured to disable the current path through the SSCB in response to determining, asynchronously, that either the second output is being asserted by the analog fault detection circuit or the samples indicate that the current through the current path exceeds the trip current level.

公开(公告)号：US20220178999A1

公开(公告)日：2022-06-09

申请号：US17113578

申请日：2020-12-07

Applicant: ABB Schweiz AG

Inventor： Rostan Rodrigues ,  David Coats

IPC: G01R31/327 ,  G01R31/28

Abstract: Systems, methods, techniques and apparatuses of prognostic testing are disclosed. One exemplary embodiment is a power switch system comprising a power switch; a current sensor; a test current injection circuit comprising: a first direct current (DC) bus rail including an output terminal and a first power supply terminal, a second DC bus rail including an input terminal and a second power supply terminal, a diode coupled to the first DC bus rail, and a leg coupled to the first DC bus rail between the diode and the first power supply terminal and coupled to the second DC bus rail between the input terminal and the second power supply terminal, the leg including a capacitor and a semiconductor device coupled in series; and a controller configured to operate the test current injection circuit to transmit a test current to the current sensor and receive a voltage based on the test current.

公开(公告)号：US12148590B2

公开(公告)日：2024-11-19

申请号：US17894740

申请日：2022-08-24

Applicant: ABB Schweiz AG

Inventor： Rostan Rodrigues ,  Pietro Cairoli ,  Utkarsh Raheja

IPC: H01H71/12 ,  H01L29/747 ,  H02H1/00 ,  H02H3/093

Abstract: Solid-state circuit breakers and method of operating same are provided. A solid-state circuit breaker (SSCB) is configured to generate a first output representative of a current through a current path of the SSCB. An analog fault detection circuit is coupled with first output and is configured to assert a second output in response to the current exceeding a trip current level. At least one analog-to-digital converter (ADC) is configured to generate samples of the first output, where the at least one ADC has a di/dt detection bandwidth that is less than a di/dt detection bandwidth of the analog fault detection circuit. The SSCB is further configured to disable the current path through the SSCB in response to determining, asynchronously, that either the second output is being asserted by the analog fault detection circuit or the samples indicate that the current through the current path exceeds the trip current level.

公开(公告)号：US11587856B2

公开(公告)日：2023-02-21

申请号：US16494569

申请日：2018-03-08

Applicant: ABB Schweiz AG

Inventor： Paolo Antonello ,  Luca Ghezzi ,  Yu Du ,  Taosha Jiang ,  Rostan Rodrigues

IPC: H01L23/495 ,  H01L23/367 ,  H01L23/373

Abstract: Solid state switching device including: a pair of line terminals including first and second line terminals for electrical connection with a corresponding phase conductor of an electric line; a switching assembly including one or more solid state power switches, the switching assembly having a first and second power terminals electrically connected with the first and second lines terminals, respectively; a heat sink element in thermal coupling with the switching assembly to adsorb heat from the switching assembly; an additional heat extraction arrangement to extract heat from the switching assembly and convey at least a portion of the adsorbed heat along the phase conductor through the first and second line terminals.

公开(公告)号：US20210118777A1

公开(公告)日：2021-04-22

申请号：US16494569

申请日：2018-03-08

Applicant: ABB Schweiz AG

Inventor： Paolo Antonello ,  Luca Ghezzi ,  Yu Du ,  Taosha Jiang ,  Rostan Rodrigues

IPC: H01L23/495 ,  H01L23/367 ,  H01L23/373

Abstract: Solid state switching device including: a pair of line terminals including first and second line terminals for electrical connection with a corresponding phase conductor of an electric line; a switching assembly including one or more solid state power switches, the switching assembly having a first and second power terminals electrically connected with the first and second lines terminals, respectively; a heat sink element in thermal coupling with the switching assembly to adsorb heat from the switching assembly; an additional heat extraction arrangement to extract heat from the switching assembly and convey at least a portion of the adsorbed heat along the phase conductor through the first and second line terminals.