Distribution type high-frequency high-voltage power supply device used for driving DBD plasma source groups

Abstract

The invention provides a distribution type high-frequency high-voltage power supply device used for driving DBD plasma source groups, and belongs to the technical field of special power supply equipment and gas discharge advanced oxidation technology application. According to the device, a full-bridge IGBT power conversion technology or a semi-bridge IGBT power conversion technology is adopted for design of an IGBT high-frequency power conversion controller, high-frequency power of 5-20kHz is input to a power output busbar, and then several to hundreds of independent high-frequency high-voltage power outputs are obtained due to the fact that several to hundreds of high-impedance small high-frequency high-voltage transformers are distributed, so that the distribution type high-frequency high-voltage power supply device is formed to drive atmosphere DBD plasma source groups of different types and different kinds of discharge power. Therefore, inherent resonance frequency of an atmosphere DBD discharge system is improved, effects of a chemical reaction of atmosphere DBD discharge plasmas are improved, and a novel technical device is provided for large-scale application of the advanced oxidation technology.

Description

technical field [0001] The invention belongs to the technical field of application of special power supply equipment and gas discharge advanced oxidation technology, and relates to a high-frequency high-voltage generating device, in particular to a distributed high-frequency high-voltage power supply device for driving a DBD plasma source group. Background technique [0002] In recent years, advanced oxidation technology has made fruitful progress in the application research of ballast water treatment of ocean-going ships, marine red tide disaster prevention, drinking water purification, sewage treatment, chemical oxidation engineering and other fields. The core of advanced oxidation technology is the efficient preparation of hydroxyl radicals ( OH), while active oxygen particles (such as O 3 , 1 o 2 , O, h 2 o 2 etc.) The leading advanced oxidation technology process is the most engineering achievable. Therefore, large-scale, high-efficiency, and high-concentration g...

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Problems solved by technology

However, there are still some problems with this device: ① The small high-frequency high-voltage transformer is integrated with the atmospheric pressure flat-plate dielectric barrier discharge reactor, and no independent high-frequency high-voltage power supply device is formed, which limits the application in other types of DBD plasma source groups , the application range is too narrow and lacks versatility; ②There is no soft-start circuit in the control system, which will cause the system to start the surge current too large during operation, which will affect the reliability and safety of the device; ③The power conversion only uses full-bridge inverter technology , the cost is high for small and medium power power supply devices; ④ Small high-frequency high-voltage transformers need to be equipped with fast fuses to limit fault overcurrent; ⑤ The discharge current sensor is set on the secondary side of small high-frequency high-voltage transformers, and the current sampling signal is too small , affecting the reliability of the power control system

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