Hybrid high direct current circuit interrupter

Details Hybrid high direct current circuit interrupter Hybrid high direct current circuit interrupter

1996-10-25

1998-08-11

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 93, H02H 300

Patent

active

057935866

ABSTRACT:
A device and a method for interrupting very high direct currents (greater than 100,000 amperes) and simultaneously blocking high voltages (greater than 600 volts). The device utilizes a mechanical switch to carry very high currents continuously with low loss and a silicon controlled rectifier (SCR) to bypass the current around the mechanical switch while its contacts are separating. A commutation circuit, connected in parallel with the SCR, turns off the SCR by utilizing a resonant circuit to divert the SCR current after the switch opens.

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patent: 4723187 (1988-02-01), Howell
patent: 4956738 (1990-09-01), Defosse et al.

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