Low energy dissipation superconducting flywheel based on structural design
Low energy dissipation superconducting flywheel based on structural design
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基于结构设计的低耗能超导飞轮
DOI：
10.1063/5.0088076
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发表时间：
2022-05
期刊：
影响因子：
1.6
通讯作者：
Xingyi Zhang
中科院分区：
文献类型：
--
作者：
Yanbin Ma;Baoqiang Zhang;Hongwei Zhao;Xingyi Zhang
超导飞轮在航空航天领域具有潜在的应用价值，其悬浮时间是一个关键因素。旋转引起的交流损耗是影响悬浮时间的重要参数，因此研究如何降低交流损耗具有重要意义。最近，开发了一种通过直接油墨写入（DIW）3D打印制备YBa2Cu3O7 −x（YBCO）高温超导飞轮的方法。本文采用结构优化的思想，对该方法制备的圆孔超导飞轮进行了优化设计。基于有限元法对优化前后的交流损耗进行了计算分析。结果表明，椭圆孔使超导飞轮的交流损耗比圆孔低58.49%。然后，通过DIW 3D打印方法制备了具有优化椭圆结构的YBCO超导飞轮。磁悬浮实验发现，优化后的超导飞轮在相同条件下的悬浮时间由之前的120 s提高到162 s，优化后的结构具有更高的悬浮质量比。将结构优化设计的思想应用于工程实践，为降低超导体的交流损耗提供了理论和实验支持。
Superconducting flywheels have potential application value in aerospace field, and its suspension time is a key factor. Alternating Current (AC) loss associated with rotation is an important parameter that affects the suspension time, so it is very important to study how to reduce the AC loss. Recently, a method of preparing YBa 2 Cu 3 O 7−x (YBCO) high-temperature superconducting flywheels by Direct-Ink-Writing (DIW) 3D printing was developed. In this paper, the circular hole superconducting flywheel prepared by this method is optimized by the idea of structural optimization. Based on the finite element method, the AC loss before and after optimization is calculated and analyzed. It is found that the elliptical holes make the superconducting flywheel have lower AC loss than circular holes, with a reduction of 58.49%. Then, the YBCO superconducting flywheel with an optimized elliptical structure was prepared by the DIW 3D printing method. The magnetic levitation experiment found that the levitation time of the optimized superconducting flywheel was increased to 162 s compared with the previous 120 s under the same conditions, and the optimized structure had a higher levitation mass ratio. It provides theoretical and experimental support for reducing the AC loss of superconductors by applying the idea of structural optimization design in engineering practice.
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影响因子：
19
作者：
Baoqiang Zhang;Qiangqiang Zhang;Peng He;Yanbin Ma;Lei Shen;Xingyi Zhang;Youhe Zhou
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