磁驱动滑移弧功率变化过程的研究

Study of the power variation of the gliding arc driven by the magnetic field

讨论了在相距25.0mm长度40.0mm的平行电极间的由强度可达6040Gs的外磁场驱动的滑移弧功率变化过程,分析了滑移弧等离子体所处的状态。当电弧运行在电极平行段时,电弧功率在0.65kW附近剧烈振荡;当电弧接近平行电极顶端时,电弧功率由约0.65kW迅速增加到约2.0kW。在一个放电周期内,电弧功率基本上是从小到大持续增加的,由弧电源提供能量来维持滑移弧等离子体的平衡状态。根据Ozlem Mutaf-Yardimici等人的理论,此时滑移弧等离子体仍处于平衡态。

The power variation of gilding arc driven by the magnetic field with the highest value 6040Gs in the parallel electrodes 25mm apart with 40mm length is discussed.The phase of gliding arc plasma is also analyzed. When arc moves on the parallel part of electrodes, the arc power is drastically fluctuated at 0.65kW. When arc is moving to the top of electrodes, the arc power increases rapidly from 0.65kW to 2,0kW. In generally, the arc power increases in one cycle of arc discharge and the arc plasma continuously obtains energy form power supply to maintain the equilibrium phase of arc plasma. According to the theory of Ozlem Mutaf-Yardirnici, the phase of the gliding arc plasma is in equilibrium.