Multikilojoule inductive modulator with solid-state opening switches

Author

Kanter, M. ; Singer, S. ; Cerny, R. ; Kaplan, Z.

Author_Institution

Soreq Nucl. Res. Center, Yavna, Israel

Volume

7

Issue

2

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

420

Lastpage

424

Abstract

A four-stage inductive storage XRAM (inverse MARX) circuit was used to amplify current and power. By means of switching action, individual inductors are charged in series and discharged in parallel to the load. A microprocessor controls the timing of the switches, which results in a predetermined load current waveform. The use of present asymmetric GTOs at much higher currents than rated allowed the amplification and shaping of a 2.5 kA charging current to 9.6 kA at the load. An energy of 25 kJ was transferred to the load, yielding 84% efficiency. The losses were mainly due to the winding resistance of the inductors. With the best-performance commercially available GTOs, this circuit may deliver over 100 kJ with an energy density of 1.6 kJ/kg. Simulation and experimental results are presented

Keywords

digital control; inductive energy storage; load (electric); microcomputer applications; power amplifiers; power inductors; switchgear; switching; thyristor applications; 2.5 to 9.5 kA; 25 kJ; 84 percent; GTOs; XRAM; digital control; energy density; inductive energy storage; inductive modulator; inverse MARX circuit; load current waveform; microprocessor; power amplifiers; solid-state opening switches; switchgear; switching; thyristor applications; timing; winding resistance; Circuit simulation; Coils; Coupling circuits; Inductance; Inductors; Shape; Snubbers; Solid state circuits; Switches; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.136260

Filename

136260