Compenstation scheme for the voltage droop of solid-state marx modulators

• US 20120326528A1
• Filed: 07/10/2012
• Published: 12/27/2012
• Est. Priority Date: 03/02/2010
• Status: Abandoned Application

• Current Assignee: David U.L. Yu, Martin L. Lundquist, Ping Chen
• Original Assignee: David U.L. Yu, Martin L. Lundquist, Ping Chen
• Inventors: Lundquist, Martin L., Yu, David U.L., Chen, Ping
• Application Number:
  US13/507,589
• Publication Number:
  US 20120326528A1
• Time in Patent Office: Days
• US Class Current: 307/108
• CPC Class Codes: H03K 17/063 in field-effect transistor switches
• CPC Class Codes: H03K 17/74 by the use, as active elements, of diodes by the use of more than one type of semiconductor device H03K17/567; by the use of tunnel diodes H03K17/58; by the use of negative resistance diodes H03K17/70
• CPC Class Codes: H03K 3/57 the switching device being a semiconductor device
• CPC Class Codes: H03K 7/08 Duration or width modulation ; Duty cycle modulation

Abstract

A novel design scheme for the compensation circuitry of solid-state Marx modulators has been described for enhancing the compensation ability of the compensation cells of solid-state Marx modulators and simplifying the entire circuitry of the modulator. High-speed solid-state switches are adopted in the new compensation cell for the control of the compensation actions. Inductive components and diodes are adopted in the design scheme to smooth the flattop of the voltage pulse output by the Marx modulator.

Claims

1. A high voltage compensation cell of solid-state Marx modulator that is capable of being charged to the same high voltage level of a Marx cell, storing electric energy for compensating the voltage droop of the solid-state Marx modulator with high power, long pulse output. Said high voltage compensation cell comprises:

capacitor(s) for charging to the high voltage that is at the same level of a Marx cell so that said high voltage compensation cell can store a large amount of electric energy for compensating voltage drooping of the Marx modulator output;

solid-state switches for regulating the flow of compensation current out from the said capacitor(s) and therefore controlling the fluent of the high voltage electric energy stored so that multiple compensations to the voltage droop of the Marx modulator can be realized from a single said high voltage compensation cell;

inductors for smoothing the voltage fluctuations of the Marx modulator when voltage compensations from said high voltage compensation cell are performed to counteract the voltage droop of said Marx modulator;

diodes for stipulating the flow direction of compensation current;

an intelligent control system for triggering said solid-state switches for regulating the compensation current to make multiple compensation actions.

2. Said high voltage compensation cell of claim 1 in which a method to use inductors and diodes or the combination of inductors, capacitors and diodes in a compensation cell which will form a buck converter structure to regulate the electric energy fluent, under the control of intelligent control system, and smooth the flattop fluctuations of voltage pulse output by solid-state Marx modulators when the pulse is being compensated.

3. A high voltage compensation cell in which a method to use high voltage capacitors, having identical or higher voltage rating than the ones used in Marx cells and being charged to that voltage level of the Marx cells, is employed by the high voltage compensation cell to store high electric energy so that the high voltage compensation cell has strong compensation ability.

4. A method of making one single high voltage compensation cell to have multiple compensations to a solid-state Marx modulator during one output voltage pulse of the Marx modulator.