Construction of 320 kJ superconducting force-balanced coil
Construction of 320 kJ superconducting force-balanced coil
复制标题
320 kJ超导力平衡线圈的构建
DOI：
10.1109/77.828357
复制
发表时间：
2000
影响因子：
1.8
通讯作者：
Y. Sato
中科院分区：
文献类型：
--
作者：
S. Nomura;K. Yamagata;D. Ajiki;N. Watanabe;H. Ajikawa;S. Tsuji;R. Shimada;M. Kyouto;Y. Sato
高磁场和线圈电流引起的强电磁力是超导储能系统中的一个严重问题。为了科普这个问题，我们提出了力平衡线圈（FBC）的概念应用于超导储能系统。FBC是一个螺旋缠绕的环形线圈，它平衡了中心力和环向力，两者都是在大半径方向上施加的。在FBC的情况下，环形电流分布被调制，使得磁表面之一与环面表面重合，以减小扭转力。这种电流分布可以通过改变螺旋绕组节距来实现。然而，纵横比（大半径/小半径）越小，制造变化的螺旋绕组变得越困难。为了克服这个困难，我们开发了一种缠绕机，可以调节螺旋缠绕。我们还设计了一个实验性的超导流化床锅炉，这是正在使用的缠绕机制造。
Strong electromagnetic force caused by high magnetic fields and coil current is a serious problem in superconducting magnetic energy storage (SMES) systems. To cope with this problem, we propose the concept of force-balanced coil (FBC) applied to SMES. The FBC is a helical-winding torus coil that balances the centering force with the hoop force, both of which are exerted in the major radius direction. In the case of FBC, the toroidal current distribution is modulated so that one of the magnetic surfaces coincides with the torus surface in order to reduce the torsional force. This current distribution can be achieved by varying the helical winding pitch. However, the smaller the aspect ratio (major radius/minor radius), the more difficult it becomes to manufacture the varying helical windings. To overcome this difficulty, we developed a winding machine which can modulate the helical winding. We also designed an experimental superconducting FBC which is being manufactured using the winding machine.