An Intelligent Electronic Fuse for Selective Isolation of Faulty Switching Cells in Power Electronic Converter Legs to Guarantee Continuous Operation

This article proposes a novel device designated as an intelligent electronic fuse (iFuse) intended to be connected in series with any current-bidirectional voltage-unidirectional active switch present power converter. The iFuse duty is selectively isolate its series-associated from the rest of converter circuit immediately after detecting that this has failed short circuit. Nonetheless, it maintains reverse (free-wheeling) current path originally offered by switch. failure detection typically performed when causes shoot-through event. Therefore, able block large currents. allows increasing power-converter fault tolerance and reliability regard short-circuit failures (SCFs), converters featuring switches parallel, redundant legs, multilevel neutral-point-clamped topologies. model analysis two-level leg two parallel per position reveals can increased up four times implemented each feasibility good performance are verified through experimental tests, proving detect associated-switch 6 $\mu \text{s}$ , while stopping currents 1 kA without incurring harmful di / dt values.