公开(公告)号：US20200312592A1

公开(公告)日：2020-10-01

申请号：US16826141

申请日：2020-03-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Stefan Halén ,  Lars Jonsson

IPC: H01H33/02 ,  H01H33/59 ,  H01H9/00 ,  H01H9/56 ,  H05B7/02

Abstract: A method of performing a circuit-breaking and closing operation in a three-phase system having a first phase, a second phase lagging the first phase by 120°, and a third phase lagging the first phase by 240°, includes: a) opening only one of the first phase, the second phase and the third phase before a zero crossing of a current of the corresponding phase, b) opening the remaining phases of the first phase, the second phase and the third phase after step a), and c) closing the first phase, the second phase and the third phase simultaneously or essentially simultaneously at a phase to ground voltage of the phase of the first phase, the second phase and the third phase which lagging the phase that was opened in step a) by 120° in a time range from 60° before a peak of the phase to 90° after the peak.

公开(公告)号：US10181726B2

公开(公告)日：2019-01-15

申请号：US15555884

申请日：2015-03-06

Applicant: ABB SCHWEIZ AG

Inventor： Lars Jonsson ,  Nan Chen ,  Stefan Thorburn

IPC: H02J3/26 ,  H02J3/12 ,  H02J3/18

Abstract: An AC power transformer includes primary and secondary windings for at least a first AC phase and a second AC phase, and a core for said at least first and second phases. The transformer further includes a control unit for transferring power from the first phase to the second phase via magnetic coupling in the core such that the sum of the phase vectors of all of the at least first and second phases is substantially zero.

公开(公告)号：US11075036B2

公开(公告)日：2021-07-27

申请号：US16641547

申请日：2018-06-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Andrea Bianco ,  Andrea Ricci ,  Lars Jonsson ,  Stefan Halén ,  Lars Liljestrand

IPC: H01H3/26 ,  H01H11/00

Abstract: The present invention relates to a method for controlling a motor-driven vacuum circuit breaker. The method comprises initiate opening (S100) the circuit breaker, wherein the circuit breaker moves with an average opening speed of a contact pair of the circuit breaker, from a closed position to an open position of the circuit breaker, and decelerating (S110) the opening speed of the contact pair to below the average opening speed before the open position is reached to avoid overshoot, and initiate closing (S120) the circuit breaker, wherein the circuit breaker moves with an average closing speed of the contact pair, from the open position to the closed position, and decelerating (S130) the closing speed of the contact pair to below the average closing speed before contact touch at the closed position, wherein the circuit breaker moves with the decelerated speed at contact touch. A motor-driven vacuum circuit breaker, a computer program and a computer program product are also presented.

公开(公告)号：US11145470B2

公开(公告)日：2021-10-12

申请号：US16641547

申请日：2018-06-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Andrea Bianco ,  Andrea Ricci ,  Lars Jonsson ,  Stefan Halén ,  Lars Liljestrand

IPC: H01H3/26 ,  H01H11/00

Abstract: The present invention relates to a method for controlling a motor-driven vacuum circuit breaker. The method comprises initiate opening (S100) the circuit breaker, wherein the circuit breaker moves with an average opening speed of a contact pair of the circuit breaker, from a closed position to an open position of the circuit breaker, and decelerating (S110) the opening speed of the contact pair to below the average opening speed before the open position is reached to avoid overshoot, and initiate closing (S120) the circuit breaker, wherein the circuit breaker moves with an average closing speed of the contact pair, from the open position to the closed position, and decelerating (S130) the closing speed of the contact pair to below the average closing speed before contact touch at the closed position, wherein the circuit breaker moves with the decelerated speed at contact touch. A motor-driven vacuum circuit breaker, a computer program and a computer program product are also presented.

公开(公告)号：US20200266008A1

公开(公告)日：2020-08-20

申请号：US16641547

申请日：2018-06-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Andrea Bianco ,  Andrea Ricci ,  Lars Jonsson ,  Stefan Halén ,  Lars Liljestrand

IPC: H01H3/26 ,  H01H11/00

Abstract: The present invention relates to a method for controlling a motor-driven vacuum circuit breaker. The method comprises initiate opening (S100) the circuit breaker, wherein the circuit breaker moves with an average opening speed of a contact pair of the circuit breaker, from a closed position to an open position of the circuit breaker, and decelerating (S110) the opening speed of the contact pair to below the average opening speed before the open position is reached to avoid overshoot, and initiate closing (S120) the circuit breaker, wherein the circuit breaker moves with an average closing speed of the contact pair, from the open position to the closed position, and decelerating (S130) the closing speed of the contact pair to below the average closing speed before contact touch at the closed position, wherein the circuit breaker moves with the decelerated speed at contact touch. A motor-driven vacuum circuit breaker, a computer program and a computer program product are also presented.