基于有源轴接地的船舶极低频电场抑制技术

为了抑制各型船舶在海水中运行时因轴系变化所产生的极低频电场信号,基于有源轴接地技术,研制出一套极低频电场抑制装置.文中分析了船舶极低频电场产生的机理,提出了抑制该极低频电场产生的改进型控制方案,并研制了原理样机.通过开展数值仿真及实船实验,经过对比研究发现,采用该装置后,船舶极低频电场降低了90%以上,抑制效果明显,从而证实了该极低频电场控制方案的正确性.

Extremely Low Frequency Electronic Fields Suppression Equipment of Vessel Based on Active Shaft-Ground Technique

To suppress extremely low frequency electronic fields of the vessels in the sea,caused by the shaft-rated related modulation of the corrosion current,equipment was invented based on active shaftground technique.Firstly,the mechanics of extremely low frequency electronic fields were analyzed.Then the improved control strategy for suppressing extremely low frequency electronic fields was proposed and a prototype was invented.Finally,the numerical simulation was proceeding and the measurements were taken on the prototype.The comparison experiment results showed that the extremely low frequency electronic fields reduced to a ninety percent after implementing the intervention.Simulation and experiment results validated the proposed control strategy based on active shaft-ground technique.