Control system and method of bipolar high voltage pulse power supply

Abstract

The invention discloses a control system and method of a bipolar high voltage pulse power supply. A switching sequence in a solid switch group module through control modules in a high voltage positivepulse generating circuit and a high voltage negative pulse generating circuit to obtain the bipolar high voltage pulse power supply in which a positive / negative pulse rising time, a positive / negative pulse falling time, a time interval between positive and negative pulses within one period, a positive / negative pulse voltage, a positive / negative pulse width, pulse frequency and a pulse number can be flexibly adjusted. The parameter-adjustable bipolar pulse realized by the control system and method disclosed by the invention has very important significance for studying the mechanism and the application of nanosecond pulse discharge.

Description

technical field [0001] The invention belongs to the field of bipolar pulse regulation, and in particular relates to a control system and method for a bipolar high-voltage pulse power supply. Background technique [0002] Gas discharge driven by high-voltage pulse power supply has important and broad application prospects in the fields of material science, energy and environment, biomedicine, military and space science. In a simulation study of an atmospheric pressure pulsed dielectric barrier discharge it was found that [1] , in the bipolar pulse discharge process, the positive half-cycle discharge is basically the same as the unipolar positive pulse, and the second discharge on the falling edge is slightly lower than the first discharge; the negative half-cycle discharge is different from the unipolar negative pulse, and can Occurs in a lower electric field, because there is an interaction between the positive pulse discharge and the negative pulse discharge, the positive ...

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Problems solved by technology

[0003] The existing nanosecond pulse sources at home and abroad are mainly adjustable in nanosecond pulse frequency and amplitude, which cannot make all parameters such as pulse rise / fall time, frequency, amplitude, duty cycle, pulse number, and waveform shape irrelevant and adjustable. Control, poor matching of load characteristics, making it difficult to control the discharge results, it is difficult to obtain the systematic discharge characteristics and laws of nanosecond pulse discharge, and it is difficult to form a consensus on the explanation of the nanosecond pulse discharge mechanism

For example, in the field of energy and chemical industry, it is difficult to match the pulse source and load. In the field of aerospace, it is impossible to obtain continuous flow and surge control. In the field of biomedicine, it is impossible to accurately control the dose of active particles generated by discharge.

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