High energy overcurrent protective device

Details High energy overcurrent protective device High energy overcurrent protective device

1981-05-18

1982-11-09

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 43, 361 58, H02H 902

Patent

active

043588085

ABSTRACT:
Electrical loads connected to capacitance elements in high voltage direct current systems are protected from damage by capacitance discharge overcurrents by connecting between the capacitance element and the load, a longitudinal inductor comprising a bifilar winding wound about a magnetic core, which forms an incomplete magnetic circuit. A diode is connected across a portion of the bifilar winding which conducts a unidirectional current only. Energy discharged from the capacitance element is stored in the inductor and then dissipated in an L-R circuit including the diode and the coil winding. Multiple high voltage circuits having capacitance elements may be connected to loads through bifilar windings all wound about the aforementioned magnetic core.

REFERENCES:
patent: 3453494 (1969-07-01), Allen
patent: 3968408 (1976-07-01), Allen
patent: 4054933 (1977-10-01), Praeg
"Present and Future Technology of High Voltage Systems for Neutral Beam Injectors"--Baker et al.; Lawrence Berkely Lab. Pub. LBL-7261, 1/27/78.
"Overcurrent Protection for the TFTR Neutral Beam Sources During Spark Down"--Praeg; IEEE Pub. No. 79CH1441-5 NPS, 11/79.

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