权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

High-performance conductors and coils used for superconducting power machines cooled by liquid nitrogen

用于液氮冷却超导电机的高性能导体和线圈

基本信息

批准号：
14350149
负责人：
SUMIYOSHI Fumio
金额：
$ 9.54万
依托单位：
Kagoshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350149/
关键词：
high temperature superconductor tape conductor coil loss electromagnetic property poynting vector power applocation

项目摘要

In order to realize superconducting power machines cooled by liquid nitrogen, superconducting conductors and coils wound with them are required to have high performance. The purposes of this study are as follows :(1)Development of new systems to measure electromagnetic properties of long and large superconducting conductors under various conditions of external magnetic fields and transport currents, which is based on our original 'Poynting vector method' adequate for short, straight tape samples, (2)Clarification of electromagnetic properties of Bi-2223 tapes in large conductors wound into coils, and (3)The most suitable design of superconductors as the winding of high performance coils.The feature of this study is constructions of two original equipments of measuring the above mentioned properties. Completed Equipment 1 can be measured Poynting vectors at both inner and outer surfaces of single layered, solenoidal coils wound with long Bi-2223 tapes or concuctors. By using this Equipment 1, the loss properties of this sample coil under the simultaneous sweep of external transverse magnetic fields and transport currents are clarified experimentally at liquid nitrogen temperature. On the other hand, Equipment 2 is also completed ; in this equipment a pair of straight large sample conductors with high current capacities is set inside NbTi split magnets cooled in liquid helium and the temperature of the sample can be changed as 4.2K, 66K or 77K. By using this Equipment 2, inter-strand coupling losses produced in Bi-2212 Rutherford cables with large current capacities are not so serious compared with large hysteresis losses. The coupling time constant of this cable is about 10msec. This result comes from metallurgical treatments of Bi-2212 strand surfaces before heat treatment.

为了实现液氮冷却的超导电机，要求超导导体及其缠绕的线圈具有高性能。本研究的目的如下：(1)开发新的系统来测量长而大的超导导体在各种外部磁场和输运电流条件下的电磁特性，这是基于我们原来的“Poynting矢量法”，适用于短而直的磁带样品；(2)澄清Bi-2223磁带在绕成线圈的大导体中的电磁特性；(3)超导体作为高性能线圈绕组的最合适设计。本研究的特点是建造了两台原始的测量上述性能的设备。完整的设备1可以在单层，用长Bi-2223磁带或导体缠绕的螺线管线圈的内外表面测量坡印亭矢量。利用该设备1，在液氮温度下实验研究了该样品线圈在外加横向磁场和输运电流同时扫描下的损耗特性。另一方面，设备2也完成了；本设备在液氦冷却的NbTi分体磁体内设置一对具有大电流容量的直大样品导体，样品温度可在4.2K、66K或77K之间变化。采用该设备2，大电流容量Bi-2212卢瑟福电缆的股间耦合损耗与大磁滞损耗相比，没有那么严重。该电缆的耦合时间常数约为10msec。这一结果来自于热处理前对Bi-2212钢条表面的冶金处理。

项目成果

期刊论文数量（42）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Critical current properties of CICC inset the Bi-2223 transposed parallel conductor with twist angles around its axis

CICC 的临界电流特性嵌入 Bi-2223 转置平行导体，绕其轴有扭转角

DOI：
发表时间：
2003
期刊：
IEEJ, The Papers of Technical Meeting on Application of Superconductivity
影响因子：
0
作者：
Kazuya Kikuchi;Francois Gibon;Yukio Saito;Toshimasa Haneyoshi;Hiroshi Negoto;Toru Oshima;Tomohiko Hujikawa;Tomohiko Hujikawa;松下明広;Hidemne Wakamatsu
通讯作者：
Hidemne Wakamatsu

Hirofumi Kasahara: "AC losses in long Bi-2223 tapes wound into a solenoidal-coil"IEEE Trans.Appl.Supercond.. (to be published). (2004)

Hirofumi Kasahara：“缠绕在螺线管线圈中的长 Bi-2223 磁带中的交流损耗”IEEE Trans.Appl.Supercond..（待出版）。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Development of New Conductors of the Cable-in-Conduit Type for HTS Coils with High Performances

高性能高温超导线圈用电缆套管型新型导体的研制

DOI：
发表时间：
2005
期刊：
IEEJ Trans.PE Vol.124, No.10
影响因子：
0
作者：
O.Sakamoto;T.Nakano;T.Nitta;H.Kameda;T.Kumano;M.Asada;A.Izumi;Akifumi Kawagoe
通讯作者：
Akifumi Kawagoe

F.Sumiyoshi: "Current capacity of a Bi-2223 CIC-type conductor within a transposed parallel cable with biased cross section"Proc.of EUCAS-2003. (to be published). (2004)

F.Sumiyoshi：“具有偏置横截面的转位平行电缆内 Bi-2223 CIC 型导体的电流容量”Proc.of EUCAS-2003。