New solid-state Marx topology for bipolar repetitive high-voltage pulses

A novel bipolar high-voltage modulator topology, based on the Marx generator concept, is proposed for high-voltage repetitive pulsed power applications. The proposed topology is a generalized version of the negative and positive all-solid-state Marx modulator concepts, which takes advantage of the intensive use of power semiconductor switches to increase the performance of the classical circuit, strongly reducing losses and increasing the pulse repetition frequency. Additionally, the proposed topology enables the use of typical half-bridge semiconductor structures while ensuring that the maximum voltage blocked by the semiconductors is the voltage of the capacitor in each stage. Due to semiconductor topology used the output voltage is very flexible. Hence, it is possible to change from negative to positive unipolar to bipolar pulse, with different duty cycles and different switching patterns. Experimental results are presented and discussed. A laboratory prototype with 10 kW peak power, of this bipolar solid-state modulator circuit, was assembled 1200 V IGBTs and diodes, operating with 1000 V d-c input voltage and 10 kHz frequency, giving 2 kV bipolar pulses, 5 A, with 5 mus into a resistive load.

[1]  R.L. Cassel,et al.  A solid state high voltage pulse modulator which is compact and without oil or a pulse transformer , 2004, Conference Record of the Twenty-Sixth International Power Modulator Symposium, 2004 and 2004 High-Voltage Workshop..

[2]  D de Cogan,et al.  A bipolar pulse tester for semiconductor devices , 1986 .

[3]  Geun-Hie Rim,et al.  High voltage pulse power supply using Marx generator & solid-state switches , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[4]  P. V. Birke,et al.  Distributed magnetic coupling synchronizes a stacked 25-kV MOSFET switch , 2000 .

[5]  P. Tavares,et al.  All Silicon Marx-bank Topology for High-voltage, High-frequency Rectangular Pulses , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[6]  Changjiang Wang,et al.  A 12 kV solid state high voltage pulse generator for a bench top PEF machine , 2000, Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435).

[7]  T. Hawkey,et al.  A solid state pulsed power system for food processing , 2001, PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251).

[8]  Herbert L. Hess,et al.  Transformerless capacitive coupling of gate signals for series operation of power MOS devices , 2000 .

[10]  R. J. Baker,et al.  Series operation of power MOSFETs for high‐speed, high‐voltage switching applications , 1993 .

[11]  T.-F. Wu,et al.  A Combined Wide and Narrow Pulse Generators for Processing Microbes , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.