单电源驱动多路电弧方法对比研究

A Comparative Study on the Methods of Multiple Arcs Driven by One Power Supply

多路电弧的产生方法对提升材料处理或气体合成的效率具有重要意义,而目前产生多路电弧时通常需要多个电源,显著增加了应用成本。因此,本文重点对比研究了单电源驱动多路电弧的方法,设计了多对电极串联、多对电极并联(支路串联电容)以及多对电极并联(支路串联电容或电感)共三种电路结构,均实现了起弧与电弧稳定维持,并对击穿特性、电弧稳定电压电流特性进行了分析。结果表明:在多对电极串联时,多路起弧与电源输出电压紧密相关,即电极对数越多所需开路电压越高;在多对电极并联(支路串联电容)时,多路起弧与电源输出电流紧密相关,即电极对数越多则所需输出电流越大;在多对电极并联(支路串联电容或电感)时,电路中电感的磁饱和效应造成各元件电压电流的突变,影响各电弧的稳定与功率分配。本文对比研究了单电源产生多路电弧的三种方法,可有效降低应用成本,为电弧在材料处理与气体合成应用提供技术支撑。

The method of generating multiple arcs is of great significance for improving the efficiency of material processing or organic gas synthesizing. At present, multiple power sources are usually required when multiple arcs are generated, which significantly increases the application cost. Therefore, this article focuses on the comparative study of the method of driving multiple arcs with a single power supply and designs three circuits: multiple pairs of electrodes in series, multiple pairs of electrodes in parallel(series capacitors in branch), and multiple pairs of electrodes in parallel(series capacitors or inductances in branch). All the circuits have realized the function of starting and maintaining the stability of multiple arcs. The article analyzes the breakdown characteristics and the voltage or current characteristics of the arc and draws the following conclusions: when multiple pairs of electrodes are connected in series, multiple arc starting is closely related to the output voltage of the power supply, that is, the more electrode pairs, the higher the required open-circuit voltage;when multiple pairs of electrodes are connected in parallel(series capacitors in branch), multiple arc starting is closely related to the output current of the power supply, that is, the more the electrode pairs, the greater the required output current;when multiple pairs of electrodes are connected in parallel(series capacitors or inductances in branch), the magnetic saturation effect of the inductor in the circuit causes a sudden change in the voltage and current of each element, which affects the stability and power distribution of each arc. So, this article compares and studies three methods of generating multiple arcs from a single power supply, which can effectively reduce application costs and provide technical support for arc applications in material processing and organic gas synthesizing.