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arXiv 1702.04321cond-mat.supr-con
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两个环形YBaCuO超导体与电流Ia和Ib的相互作用

Interaction Between Two Ring Shaped YBaCuO Superconductors with currents ia and ib

G. Briones Galán, G. Domarco, L. Romaní

摘要:

带有电流ia和ib的两个环变成了磁铁,它们可以互相吸引,也可以互相排斥。如果从这个环系统中提取机械功,或者通过吸引使环靠近,或者通过排斥使它们分开,环的能量,系统中唯一存在的能量来源,减少了:$\frac{1}{2}LI_{a}^{2}+\frac{1}{2}LI_{b}^{2}$如果吸引或排斥的能量被传递到系统,(与力相反)它的能量增加,即环中的电流增加。发生这种情况是因为环中存在的电流是自由的,即不与任何施加电流的设备(电源、恒流)相连。类似地,电磁感应的效应可以增加或减少电流,并且相应的机械功与这些发展相关联。在吸引过程中,环中的电流不仅会随着它们的靠近而减少,而且还可以被抵消,如果这种效应继续下去,它甚至可能改变方向。悬浮训练就是一种已经存在的应用。它被轨道吸引并保持在轨道上,但如果由于货物的重量而非常接近轨道,则会发生强烈的排斥(悬浮)。另一个应用是在这些环中积累能量,在这些环中,它们可以消耗大量的电流,这不仅是因为其高临界电流,而且还因为磁通量保持恒定的事实,不能增加。这种存储系统的另一个优点是其在电磁能和机械功的交换中的可逆性。在储能系统中,流过环的电流越大,其能量就越大。为了实现这一点,人们研究了储存尽可能多的能量的理想条件。

英文摘要:

Two rings with currents ia and ib become magnets that can either attract or repel each other. If mechanical work is extracted from this ring system, either by bringing closer the rings during an attraction or by separating them as the result of a repulsion, the energy of the rings, the only existing source of energy in the system, decreases: $\frac{1}{2}LI_{a}^{2}+\frac{1}{2}LI_{b}^{2}$ If an energy either of attraction or repulsion is communicated to the system, (working against the forces) its energy increases, i.e. the currents in the rings increase. This happens because the currents existing in the rings are free, i.e. not linked to any device which imposes a current (power supply, constant current). Similarly, the effect of electromagnetic induction can increase or decrease the currents with the corresponding mechanical work linked to these developments. Not only does the current in the rings decrease as they get closer during the attraction, but it also can be cancelled and, if the effect continues, it may even change its direction. An application that already exists is the levitation train. It is attracted by the rail and held on it, but if it is very close to this due to the weight of the goods a strong repulsion (levitation) occurs. Another application would be the accumulation of energy in these rings, where they can spend large amounts of current, not only because of its high critical currents but also by the fact that the magnetic flux remains constant, cannot increase. Another advantage in this storage system is its reversibility in the exchange of electromagnetic energy and mechanical work. In the energy storage system, the greater the current flowing through the ring, the greater its energy is. In order to attain this, there has been made a study of the ideal conditions to store as much energy as possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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