公开(公告)号：US10665404B2

公开(公告)日：2020-05-26

申请号：US16466955

申请日：2017-11-22

Applicant: ABB Schweiz AG

Inventor： Erik Johansson ,  Zichi Zhang ,  Stefan Valdemarsson

IPC: H01H33/59 ,  H01H33/10 ,  H01H9/36 ,  H02H3/16 ,  H02H3/087

Abstract: An electrical DC switching system for extinguishing an electric arc, wherein the electrical DC switching system includes: a contact arrangement having a first contact and a second contact, a current injection circuit including a resonance circuit configured to be connected across the contact arrangement, and a first switch connected to the resonance circuit and to the first contact, wherein the first switch is configured to be switched between an open state and a closed state, wherein in the closed state the first switch is configured to enable an injection current to flow through the resonance circuit in a first flow direction and into the contact arrangement in a direction opposite to a flow direction of a contact arrangement arc current, and an arc chute assembly including a plurality of splitter plates configured to extinguish an electric arc across the first contact and the second contact, wherein each splitter plate of the plurality of splitter plates has a layered configuration including a magnetic layer and two non-magnetic layers.

公开(公告)号：US20210358701A1

公开(公告)日：2021-11-18

申请号：US17312491

申请日：2019-12-18

Applicant: ABB Schweiz AG

Inventor： Zichi Zhang ,  Stefan Valdemarsson

IPC: H01H33/18 ,  H01H33/42 ,  H01H33/53

Abstract: An electrical switching device including: a main contact arrangement including a fixed contact and a movable contact, a plurality of splitter plates, each having a loop structure, the splitter plates being coaxially stacked with respect to their loop structure to form a stack of splitter plates, wherein one of the splitter plates of the stack of splitter plates is a first outermost splitter plate and another one of the splitter plates of the stack of splitter plates is a second outermost splitter plate, a first arc runner electrically connected to the second outermost splitter plate and a second arc runner electrically connected to the first outermost splitter plate, the first arc runner and the second arc runner being configured to direct a main arc from the main contact arrangement to the stack of splitter plates to thereby split the main arc into a plurality of secondary arcs between the splitter plates, and a first drive coil electrically connected to the second arc runner and to the movable contact or to the first arc runner and to the fixed contact, wherein the first drive coil has a first force increasing coil portion extending in parallel with the first arc runner in a direction towards the splitter plates such that the first force increasing coil portion is able to carry current in the same direction as and in parallel with a main current flow in the first arc runner to increase the magnetic field to thereby increase the Lorenz force applied to the main arc between the first arc runner and the second arc runner, when energised, is configured to create a blowing magnetic field in the stack of splitter plates, causing the secondary arcs to move circumferentially along the loops structures of the splitter plates.

公开(公告)号：US10734834B2

公开(公告)日：2020-08-04

申请号：US15997120

申请日：2018-06-04

Applicant: ABB Schweiz AG

Inventor： Zhiguo Pan ,  Adil Oudrhiri ,  Zichi Zhang ,  Yu Du

IPC: H02J9/06 ,  H02J3/18 ,  H02J7/00 ,  H02J4/00 ,  H03K17/56

Abstract: A resonant turn-off circuit is provided to disconnect an inadequate power source and transfer a load to an alternate power source. In the circuit, a main switch is turned off before the AC cycle of the power source crosses zero. As a result, the main switch may be turned off quickly to transfer electric power supplied to a load to a second power source. The circuit may include resonant switches, a capacitor, a pre-charging power supply and an inductor. When it is desired to turn off the main switch, a resonant switch is turned off to cause a voltage reversal across the switch.

公开(公告)号：US20190372389A1

公开(公告)日：2019-12-05

申请号：US15997120

申请日：2018-06-04

Applicant: ABB Schweiz AG

Inventor： Zhiguo Pan ,  Adil Oudrhiri ,  Zichi Zhang ,  Yu Du

IPC: H02J9/06

Abstract: A resonant turn-off circuit is provided to disconnect an inadequate power source and transfer a load to an alternate power source. In the circuit, a main switch is turned off before the AC cycle of the power source crosses zero. As a result, the main switch may be turned off quickly to transfer electric power supplied to a load to a second power source. The circuit may include resonant switches, a capacitor, a pre-charging power supply and an inductor. When it is desired to turn off the main switch, a resonant switch is turned off to cause a voltage reversal across the switch.

公开(公告)号：US11335524B2

公开(公告)日：2022-05-17

申请号：US17312491

申请日：2019-12-18

Applicant: ABB Schweiz AG

Inventor： Zichi Zhang ,  Stefan Valdemarsson

IPC: H01H33/18 ,  H01H33/42 ,  H01H33/53

Abstract: An electrical switching device includes: a main contact arrangement including a fixed contact and a movable contact, a plurality of splitter plates, each having a loop structure, the splitter plates being coaxially stacked with respect to their loop structure to form a stack, wherein one splitter plate is a first outermost plate and another splitter plate is a second outermost plate, a first arc runner electrically connected to the second outermost plate and a second arc runner electrically connected to the first outermost plate, the first and second arc runners being configured to direct a main arc from the main contact arrangement to the stack to thereby split the main arc into a plurality of secondary arcs between the splitter plates, and a first drive coil electrically connected to the second arc runner and to the movable contact or to the first arc runner and to the fixed contact.

公开(公告)号：US20190355533A1

公开(公告)日：2019-11-21

申请号：US16477107

申请日：2017-01-13

Applicant: ABB Schweiz AG

Inventor： Zichi Zhang ,  Stefan Valdemarsson

IPC: H01H33/08 ,  H01H33/60

Abstract: A switchgear includes a circuit breaking section having a moveable contact bridging element and at least one first arc chutes adjacent the contact bridging element, each arc chute including a base plate for connecting to the contact bridging element and a group of splitter plates placed adjacent the base plate, where the splitter plates of the groups are separated from the base plate and each other via air gaps and resistors interconnect at least some of the plates in at least a first of the arc chutes for bypassing corresponding air gaps, wherein the resistors have values in the range 5 kΩ-1 MΩ, current ratings below 100 mA and power ratings below 1 W.