US 11,757,276 B2
Fault current limiter circuit breaker
Jesper Magnusson, Åkersberga (SE); and Johan Nohlert, Västerås (SE)
Assigned to ABB Schweiz AG, Baden (CH)
Appl. No. 17/906,058
Filed by ABB Schweiz AG, Baden (CH)
PCT Filed Feb. 1, 2021, PCT No. PCT/EP2021/052320
§ 371(c)(1), (2) Date Sep. 9, 2022,
PCT Pub. No. WO2021/180397, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 20162221 (EP), filed on Mar. 10, 2020.
Prior Publication US 2023/0124793 A1, Apr. 20, 2023
Int. Cl. H02H 9/08 (2006.01); H02H 3/02 (2006.01); H02H 7/22 (2006.01)
CPC H02H 3/025 (2013.01) [H02H 7/22 (2013.01)] 15 Claims
OG exemplary drawing
1. A method of operating a Fault Current Limiter Circuit Breaker, FLCB, comprising a plurality of FLCB modules connected in series, including at least a first module and a second module, each module including a plurality of parallel component legs comprising:
a mechanical switch leg comprising a mechanical switch;
a semiconductor switch leg comprising a semiconductor switch; and
a Metal Oxide Varistor, MOV, leg including a MOV;
the method comprising:
when the FLCB is in an open configuration, obtaining an indication that the FLCB should be closed;
in response to the obtained indication, closing the semiconductor switch of each of the modules; and
after the closing of the semiconductor switches and while the mechanical switch of the second module remains open, closing the mechanical switch of the first module.