Reactive snubber for inductive load clamp diodes

Details Reactive snubber for inductive load clamp diodes Reactive snubber for inductive load clamp diodes

1981-10-19

1983-07-05

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 56, 361 91, 361111, 361159, H02H 904

Patent

active

043921728

ABSTRACT:
A saturable reactor snubber to improve the recovery characteristics of a clamp diode used in a power switching circuit is provided with a secondary winding to permit saturating the reactor via a secondary current pulse in order to improve the turn-on speed of the clamp diode. The current pulse for saturating the reactor at turn-on is preferably derived from a shunt snubber charging pulse or from an external generator synchronized to the turn-off time of a power switching device in the switching circuit.

REFERENCES:
patent: 3189796 (1965-06-01), Tipton
patent: 3968420 (1976-07-01), Yoshida
patent: 4365171 (1982-12-01), Archer
"Snubber Circuit Design Calculations"; Tobin et al., General Electric Company, Semiconductor Design and Application Guidebook, Nov. 1975.
"Reducing Diode Reverse Recovery Current", Bauman, IBM Tech. Disc. Bulletin, vol. 18, No. 5, pp. 1493-1494, 10/75.
"Transistorised PWM Inverter Asynchronous Motor Drive", Schmidt et al., International Conf. on Elec. Machines, Athens, Greece, 9/80.

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