A dbd 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 DBD discharge research is not systematic enough, the frequency is not high, the working frequency is not high, so as to facilitate the expansion of application, withstand voltage and flow Effects of capacity increase and circuit simplification
Active Publication Date: 2019-06-04
CHONGQING UNIV
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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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[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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The invention discloses a DBD high-frequency bipolar nanosecond pulse generator based on magnetic pulse compression, which includes a power supply system, a solid-state switch system, a control circuit and a magnetic pulse compression system. A DBD high-frequency bipolar nanosecond pulse generator based on magnetic pulse compression is essentially a kind of pulse voltage compression using a saturable inductance, thereby increasing the rising edge of the voltage wave, and at the same time, in order to increase the operating frequency of the generator , A full-bridge inverter circuit is used to generate bipolar pulses, which can save the magnetic core reset circuit. The test results show that through the bipolar magnetic compression system, the nanosecond pulse voltage that can be output at both ends of the load has the following parameters: the amplitude is adjustable from 5 to 13kV, the rising edge is about 100ns, and the repetition frequency can be 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...
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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