All solid state high voltage nanosecond pulse power supply

A nanosecond pulse, all-solid-state technology, applied in the field of power supply, can solve problems such as restricting applications, and achieve the effects of high withstand voltage level, high operating frequency and long life

Inactive Publication Date: 2009-09-16
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difficulty of the direct series connection technology of semiconductor switches lies in the transient voltage equalization problem of each switching tube at the moment of turning on or turning off. Since this problem has not been well solved, it rest

Method used

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  • All solid state high voltage nanosecond pulse power supply
  • All solid state high voltage nanosecond pulse power supply
  • All solid state high voltage nanosecond pulse power supply

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Embodiment Construction

[0033] The present invention relates to systems and methods for generating voltage pulses. The invention can control the amplitude of the voltage pulse and the duration of the voltage pulse, and make the rising edge of the output voltage less than one hundred nanoseconds.

[0034] Embodiments of the invention include a series of voltage cells with capacitors and switches in series, as well as intermediate storage capacitors (or sharpening capacitors) and magnetic switches for pulse compression. A charging switch in each voltage cell provides a path for the charging current applied through the diode. The advantage of this circuit structure is that it is not necessary to use common reactors, resistors and power frequency charging power sources in traditional pulse generators, and at the same time, it can output voltage pulses with fast rising edges. Additionally, the reduction in system volume reduces ground parasitic capacitance associated with the systems and methods describe...

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Abstract

The invention belongs to the technical field of the power supply, in particular to an all solid state high voltage nanosecond pulse power supply. The power supply is divided into the following two parts: a series voltage booster circuit and a pulse compression circuit, wherein the series voltage booster circuit consists of a series of voltage units which are connected in series to realize the function of voltage boost; each voltage unit is provided with a capacitor connected with a switch which can be connected and disconnected, and capacitors of the series of the voltage units form a capacitor unit; one part in the switch is a charge switch to charge the capacitors in parallel, while the other part is a discharge switch to discharge the capacitors in series; the pulse compression circuit is connected with a magnetic switch in a series connection mode by an energy storage capacitor or a sharpening capacitor. The power supply reduces system volume to connect more voltage units in series, and uses a direct current charge power supply with lower voltage to charge a pulse generator; the adopted switch device generator has longer service life and higher frequency; and the used magnetic switch reduces rise time of voltage pulse output by a Marx circuit, and is free of maintenance and has low failure rate.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to an all-solid-state high-voltage nanosecond pulse power supply. Background technique [0002] Many applications require pulsed power supplies capable of generating high voltage pulses. Intense particle beam accelerators, high-power pulsed lasers, high-power microwaves, material surface treatment and ion implantation, flash X-ray radiography, pulsed plasma discharges and their industrial applications are examples of applications that require high-voltage pulses. In traditional systems, pulse power supplies use capacitors, inductors, etc. for energy storage, use cascade methods or pulse transformers for boosting, and use trigger tubes and thyristors for switch control. [0003] The above-mentioned type of pulsed power supply is usually formed using the principle of a Marx generator. A Marx generator is a circuit that generates high voltage pulses by charging a b...

Claims

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Application Information

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IPC IPC(8): H02M9/00
Inventor 刘克富邱剑王冬冬
Owner FUDAN UNIV
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