公开(公告)号：US20250149880A1

公开(公告)日：2025-05-08

申请号：US18504573

申请日：2023-11-08

Applicant: ABB Schweiz AG

Inventor： Govind S. Chavan ,  Chunmeng Xu ,  Zhou Dong ,  Pietro Cairoli

IPC: H02H7/26 ,  G01R15/18 ,  G01R15/20 ,  H02H1/00

Abstract: Embodiments of the present disclosure provide an electrical circuit and a method for detecting short circuit faults with a solid-state circuit breaker (SSCB) in a direct current (DC) electrical system. The electrical circuit includes a first sensor configured to detect a fault current of an electrical system, and the first sensor is configured for installation on a main current path of an SSCB pole; a second sensor configured to detect a derivative of the fault current of the electrical system with respect to time, and the second sensor is configured for installation on the main current path of the SSCB pole; and an analog circuit, and an output of the first sensor and an output of the second sensor are connected to the analog circuit.