Non-dissipative LC snubber circuit

Details Non-dissipative LC snubber circuit Non-dissipative LC snubber circuit

1982-12-08

1984-12-18

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363124, 363134, H02H 7122

Patent

active

044893736

ABSTRACT:
Non-dissipative snubber for a D.C. power switching circuit comprising a main inductance connected in series with a load, a controlled switch, an inductance, and a D.C. voltage source. The snubber includes a branch circuit including a capacitor, a first diode, and an auxiliary inductance in series, mounted in parallel across the switch, with one terminal of the capacitor directly connected to the junction of the switch and the main inductance. The other terminal of the capacitor is connected through a second diode to a point of constant potential having a value about half that withstood by the switch. The snubber permits the use of a capacitor of lower voltage rating than heretofore required.

REFERENCES:
patent: 4093877 (1978-06-01), Pollmeier
patent: 4167776 (1979-09-01), Nygaard
patent: 4336587 (1982-06-01), Boettcher et al.
patent: 4365171 (1982-12-01), Archer
patent: 4370701 (1983-01-01), Western
Proceedings of the Seventh National Solid-State Power Conversion Conference, pp. G4-1 to 9, Shaughnessy, "Modelling and Design of Non-Dissipative LC Snubber Networks", Mar. 1980.
Proceedings of the Sixth National Solid-State Power Conversion Conference, pp. B1-1 to 6, Whitcomb, "Designing Non-Dissipative Current Snubbers for Switched Mode Converters", May 1979.

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