All-solid-state high voltage pulse current source with positive and negative pulse output

Abstract

The invention belongs to the technical field of power sources, and particularly relates to an all-solid-state high voltage pulse current source with positive and negative pulse output. The all-solid-state high voltage pulse current source is composed of a series of basic discharging units connected in series, namely, half-bridge circuits connected in series or full-bridge circuits connected in series, and meanwhile inductors are connected with loads in series. According to the all-solid-state high voltage pulse current source, the low-voltage half-bridge or full-bridge circuits are used as the basic discharging units of a series circuit, therefore, the charging voltage of a system can be effectively lowered, the safety and the reliability of the power source can be improved, and the size of the power source is greatly reduced. The power source can have strong adjustability through adjustment of synchronous control signals of switching tubes, and the power source has very strong flexibility in aspects of the output voltage, the pulse width, the working frequency and the like. Detail modification can also be conducted on output pulse waveforms through asynchronous control over all the discharging units, and therefore obtaining of more accurate pulse output is facilitated.

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 pulse current source with positive and negative pulse outputs. Background technique [0002] At present, high-voltage pulsed current sources are widely used in scientific research, national defense and industrial production, such as EDM, plasma discharge, laser power supply, pulsed electromagnetic interference source, accelerator kicker power supply, and preparation and modification of special materials. In traditional systems, high voltage capacitors or pulse forming networks are often used to discharge the load through trigger tubes or thyratrons. [0003] Traditional high-voltage pulsed current sources usually use discrete devices to achieve pulsed high-voltage output, that is, all parts of the power supply are high-voltage devices, such as high-voltage capacitors, high-voltage transmission lines, high-voltage charging sources...

AI Technical Summary

Problems solved by technology

The use of high-voltage discrete devices makes the system bulky and costly. Especially in the occasions that require narrow pulse currents, high-voltage transmission lines and pulse forming networks often require a large space. To a certain extent, the efficiency of the system is reduced, and it is not conducive to the repeated frequency work of the power supply

High-voltage switching devices, such as thyratrons, three-electrode switches, and ignition tubes, cannot be flexibly adjusted in terms of operating voltage, and the operating characteristics are directly related to the operating voltage, so it is not conducive to obtaining stable pulses with adjustable waveforms wave, which also limits the application of high-voltage pulse current source

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