公开(公告)号：US20170082672A1

公开(公告)日：2017-03-23

申请号：US14862716

申请日：2015-09-23

Applicant: ABB Technology Ltd.

Inventor： Patrick Erik Schneider ,  Jing Xu

IPC: G01R31/02 ,  G01R19/165 ,  H02S50/10 ,  H03H11/12

CPC classification number: G01R31/024 ,  G01R19/165 ,  H02S50/10 ,  H03H11/1217 ,  H03H11/1286

Abstract: A unique electrical system includes a first electrical component and a second electrical component. A conductor electrically couples the first electrical component with the second electrical component. A sensor is constructed to sense an AC power flow in the conductor and output an AC signal proportional to the AC power flow. A band-pass filter is in electrical communication with the sensor and constructed to receive and filter the AC signal and to generate an AC voltage proportional on the AC signal. A controller is in electrical communication with the band-pass filter, and is operative to receive and sample the AC voltage. The controller is configured to execute program instructions to sum sequential AC voltage values received from the band-pass filter over a sample time period, and to determine whether an arc fault has occurred based on the summed AC voltage values.

公开(公告)号：US10078105B2

公开(公告)日：2018-09-18

申请号：US14862716

申请日：2015-09-23

Applicant: ABB Technology Ltd.

Inventor： Patrick Erik Schneider ,  Jing Xu

IPC: G01R31/26 ,  G01R31/02 ,  H03H11/12 ,  G01R19/165 ,  H02S50/10

CPC classification number: G01R31/024 ,  G01R19/165 ,  G01R19/16538 ,  G01R31/1272 ,  G01R31/14 ,  G01R31/40 ,  H02S50/10 ,  H03H11/1217 ,  H03H11/1286

Abstract: A unique electrical system includes a first electrical component and a second electrical component. A conductor electrically couples the first electrical component with the second electrical component. A sensor is constructed to sense an AC power flow in the conductor and output an AC signal proportional to the AC power flow. A band-pass filter is in electrical communication with the sensor and constructed to receive and filter the AC signal and to generate an AC voltage proportional on the AC signal. A controller is in electrical communication with the band-pass filter, and is operative to receive and sample the AC voltage. The controller is configured to execute program instructions to sum sequential AC voltage values received from the band-pass filter over a sample time period, and to determine whether an arc fault has occurred based on the summed AC voltage values.