DBD (dielectric barrier discharge) high-frequency bipolar nanosecond pulse generator based on magnetic compression

A nanosecond pulse, bipolar technology, applied in the direction of plasma, electrical components, etc., can solve the problems of low operating frequency, low frequency, insufficient DBD discharge research, etc., to achieve increased withstand voltage and flow capacity, Simplify the circuit and help expand the application effect

Active Publication Date: 2017-09-01
CHONGQING UNIV
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  • Abstract
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Problems solved by technology

However, the application of the above-mentioned magnetic compression system to DBD plasma discharge has the following disadvantages: ①The frequency is usually not high
Limited by the reset of the magnetic switch or the low-voltage control switch, usually the operating frequency of these magnetic compression systems is not high, basically below 1-2kHz, but the current research on DBD discharge at high frequencies is not systematic enough
②The magnetic compression system studied above generally works under the condition of unipolarity, but the research shows that the discharge process of DBD under bipolar pulse voltage is obviously different from that of unipolar

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  • DBD (dielectric barrier discharge) high-frequency bipolar nanosecond pulse generator based on magnetic compression
  • DBD (dielectric barrier discharge) high-frequency bipolar nanosecond pulse generator based on magnetic compression
  • DBD (dielectric barrier discharge) high-frequency bipolar nanosecond pulse generator based on magnetic compression

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

[0036] see figure 1 , A DBD high-frequency bipolar nanosecond pulse generator based on magnetic compression in this embodiment includes: a power supply system 1 , a solid-state switching system 2 , a control circuit 3 and a magnetic pulse compression system 4 .

[0037] see figure 2 , the power supply system 1 includes a high-voltage DC power supply 101 , a charging resistor 102 and a parallel capacitor 103 . A charging resistor 102 and a parallel capacitor 103 are connected in series between ...

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Abstract

The invention discloses a DBD (dielectric barrier discharge) high-frequency bipolar nanosecond pulse generator based on magnetic compression, which comprises a power supply system, a solid state switch system, a control circuit and a magnetic pulse compression system. According to the DBD high-frequency bipolar nanosecond pulse generator based on magnetic compression, actually, a saturable inductor is used to compress pulse voltage, the rising edge of voltage waves is thus improved, and in order to improve the working frequency of the generator, a full-bridge inverter circuit is used to generate bipolar pulses, and a magnetic core reset circuit can be saved. A test result shows that through the bipolar magnetic compression system, the nanosecond pulse voltage outputted at two ends of a load has the following parameters: adjustable amplitude between 5 to 13 kV, the rising edge around 100 ns, and the repeated frequency as high as several kHz.

Description

technical field [0001] The invention relates to the technical field of plasma discharge, and specifically designs a DBD high-frequency bipolar nanosecond pulse generator based on magnetic pulse compression. Background technique [0002] In recent years, atmospheric pressure non-equilibrium plasma has received more and more attention because of its unique advantages. Because it is a low-temperature plasma that discharges in the surrounding atmosphere, it makes the applications that were difficult to realize, such as biomedicine; The cost is greatly reduced, and one of the very important applications is the surface modification of materials. [0003] DBD (dielectric barrier discharge) plasma is of great industrial application value because of its ability to generate large-area uniform glow discharge or Townsend discharge under atmospheric pressure. Its final application effect is closely related to the plasma characteristics, and the plasma characteristics are mainly determi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
CPCH05H1/2406H05H2242/22
Inventor 米彦万佳仑彭文成卞昌浩姚陈果李成祥
Owner CHONGQING UNIV
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