A repetitive high voltage pulse adder based on solid state switches

Author

Liu, Kefu ; Luo, Yan ; Qiu, Jian

Author_Institution

Inst. of Electr. Light Sources, Fudan Univ., Shanghai, China

Volume

16

Issue

4

fYear

2009

fDate

8/1/2009 12:00:00 AM

Firstpage

1076

Lastpage

1080

Abstract

A repetitive high voltage pulse adder based on solid state switches with isolated recharge is described. All capacitors in the modulator are recharged separately through a corresponding magnetic core transformer by a common high frequency power supply. This circuit configuration simplifies the insulation design and arrangement. This scheme is suitable for high frequency pulse discharge due to its high charge efficiency. At the same time it retains the inherent switch protection capability similar to a solid-state Marx modulator. In our present work, a 22-stage test modulator has been built and successfully operated at output voltage of 20 kV with repetitive rate of 20 kHz, rise time of 150 ns and pulse width of 3 Â¿s. The primary experiments verified the system feasibility.

Keywords

adders; power transformers; pulse generators; pulsed power supplies; switches; capacitors; frequency 20 kHz; high charge efficiency; high frequency power supply; high frequency pulse discharge; insulation design; magnetic core transformer; modulator; pulse width; repetitive high voltage pulse adder; solid state switches; solid-state Marx modulator; switch protection capability; test modulator; time 150 ns; voltage 20 kV; Adders; Capacitors; Frequency; Power transformer insulation; Pulse transformers; Pulse width modulation; Pulsed power supplies; Solid state circuits; Switches; Voltage; Pulsed power modulator, pulse voltage adder, solid state switches.;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2009.5211857

Filename

5211857