Solid-state microsecond capacitance charger for high voltage...

Details Solid-state microsecond capacitance charger for high voltage... Solid-state microsecond capacitance charger for high voltage...

2007-12-11

2007-12-11

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Wave form or wave shape determinative or pulse-producing...

With capacitor

C307S110000, C323S208000

Reexamination Certificate

active

10351644

ABSTRACT:
A solid-state high-voltage pulse generator based on a three-phase chopper capacitance charger is described. In a first phase, an intermediate capacitor is resonance-charged via a diode. In a second phase, the intermediate capacitor is discharged to the load through one or more solid-state switches. In a third phase, the energy remaining in the intermediate capacitor is returned to a power-supply filter capacitor. In one embodiment, the three-phase chopper includes an intermediate capacitor that is charged by first and fourth branches of a bridge and discharged by second and third branches of a bridge. In one embodiment, each branch of the bridge includes a diode in series with an inductor. In one embodiment, a composite solid-state switch connects the intermediate capacitor to a primary winding of an output transformer such that the intermediate capacitor discharges through the primary winding. In one embodiment, a secondary winding of the output transformer is provided to an output load. In one embodiment, the output load is a reactive load. In one embodiment, the output load is a capacitive load.

REFERENCES:
patent: 3781649 (1973-12-01), Ishida
patent: 4268899 (1981-05-01), Rokas
patent: 4409647 (1983-10-01), Terkanian
patent: 4922396 (1990-05-01), Niggemeyer
patent: 5228770 (1993-07-01), Brunson
patent: 5905646 (1999-05-01), Crewson et al.
patent: 6104147 (2000-08-01), Nakamura et al.
patent: 6188180 (2001-02-01), Diamond
patent: 6411133 (2002-06-01), Matsudai et al.
patent: 08164320 (1996-06-01), None

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