Title :
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
fDate :
8/1/2009 12:00:00 AM
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 ¿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.;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2009.5211857
