CAJ | 학술논문

研究了交流磁扰动对高温超导块材和永磁体之间悬浮力的影响.实验分析了在零场冷(ZFC)条件下,不同频率的交流磁场扰动下的悬浮力曲线;另外还研究了交流磁扰动在永磁体下降和上升过程中对悬浮力的影响,发现上升过程中悬浮力受交流磁场影响较大,而在下降过程中影响则较为不明显,同时随着交流磁场幅值的增大,悬浮力的滞回曲线逐渐加宽.说明交流磁场导致了超导块磁滞损耗的增加,对超导磁浮特性的研究具有理论意义.
연구료교류자우동대고온초도괴재화영자체지간현부력적영향.실험분석료재령장랭(ZFC)조건하,불동빈솔적교류자장우동하적현부력곡선;령외환연구료교류자우동재영자체하강화상승과정중대현부력적영향,발현상승과정중현부력수교류자장영향교대,이재하강과정중영향칙교위불명현,동시수착교류자장폭치적증대,현부력적체회곡선축점가관.설명교류자장도치료초도괴자체손모적증가,대초도자부특성적연구구유이론의의.
Behavior of magnetic levitation force between a HTS bulk and a permanent magnet in changing alternating magnetic disturbance is investigated systemically. The levitation force was measured under the different frequency of alternating magnetic field in zero field cooling (ZFC) model. The results show the influence is not obvious in the falling process while significant obvious in the rising process. The levitation force hysteresis curves were gradually widened when the alternating magnetic amplitude increases. This is due to external alternating magnetic field caused by hysteresis strengthening of superconductor bulk. It was also observed that the levitation force is influenced by the applied magnetic field most seriously under frequency of 300Hz.