DBD high-frequency high-voltage power supply system

Abstract

The invention discloses a DBD high-frequency high-voltage power supply system including a main circuit and a control circuit. The main circuit includes a silicon controlled rectifier, an AC / DC conversion module, an IGBT inverter and a boosting transformer; the control circuit comprises an auxiliary power supply, a main control chip, a driving circuit, an isolation type adjustable potentiometer anda sampling feedback circuit; the auxiliary power supply, the isolation type adjustable potentiometer and the sampling feedback circuit are all connected with the main control chip; the alternating-current voltage input into the main circuit sequentially passes through the silicon controlled rectifier, the AC / DC conversion module, the IGBT inverter and the boosting transformer, and then the high-voltage alternating-current voltage is output; the sampling feedback circuit is used for sampling the high-voltage alternating-current voltage and feeding the voltage signals and the frequency signalsback to the main control chip, the main control chip controls the voltage regulation or frequency modulation, and the auxiliary power supply supplies power to the main circuit and the control circuit.The frequency and voltage independent adjustable function of the alternating current voltage is realized, and the frequency modulation can be stabilized at the same time.

Description

technical field [0001] The invention relates to the technical field of power supply equipment, in particular to a DBD high-frequency high-voltage power supply system. Background technique [0002] Dielectric Barrier Discharge (DBD) refers to a non-equilibrium gas discharge in which an insulating medium is inserted into the discharge space and a sufficient AC voltage is applied to generate plasma. In the DBD discharge area, a large number of active substances will be produced, such as high-energy electrons, free radicals, ions and excited molecules, etc., making it suitable for environmental deodorization, industrial waste purification, material surface treatment and modification, ozone generation and other applications. , possibly achieving higher efficiency. In addition, the plasma is generated under atmospheric pressure, which saves the vacuum chamber device, reduces the cost of equipment, and has broad application prospects in the industrial field. [0003] In the exist...

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Problems solved by technology

[0004] In order to solve the deficiencies of the prior art, the present invention provides a DBD high-frequency high-voltage power supply system. A control circuit is added to the DBD power supply system, which can realize the independent adjustable function of the frequency and voltage of the AC output voltage, making up for the frequency modulation At the same time, the corresponding pressure regulation cannot be realized

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