Protection against circuit faults represents a major technical challenge in the emerging dc
transmission and distribution power networks. A popular prior-art dc hybrid circuit breaker …

Hybrid direct current circuit breakers (DCCBs) have great prospects for the isolation of dc
faults in multi‐terminal dc grids. Current commutation from the mechanical switch branch to …

The hybrid dc circuit breaker (HCB) is an important piece of equipment for clearing dc faults
and maintaining the safe operation of dc grids. The current transition from a mechanical …

Recently the hybrid multi-port DC circuit breaker (MP-DCCB) is becoming popular in
protecting HVDC grids, thanks to their reduction of power electronics devices. In this paper …

Current interruption in dc circuits is more challenging than in their ac counterparts due to the
absence of natural current zero-crossing and resistive nature of the dc grids. This article …

DC circuit breakers are essential building blocks for the protections in the DC network
systems. The hybrid circuit breaker combines the merits of the solid-state circuit breakers …

Analysis and experimental study of current commutation in an ultra-fast, current limiting,
hybrid DC circuit breaker for medium voltage applications is reported in this paper. The …

HVDC transmission systems using voltage source converters (VSC-HVDC) have been
identified as an attractive solution for bulk power delivery over long distance. However if DC …

This article introduces a new dc hybrid circuit breaker (HCB) concept termed electronically
assisted circuit breaker (EACB). A conventional ac mechanical molded case circuit breaker …

Hybrid high voltage direct current circuit breakers (DCCBs) are capable of interrupting fault
current within a few milliseconds, but this technology has high capital cost, especially in a …