Soomro Wafa Ali, Guo Youguang, Lu Haiyan, Jin Jianxun, Shen Boyang, Zhu Jianguo
Faculty of Engineering and IT, University of Technology Sydney, Sydney, NSW 2007, Australia.
School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
Materials (Basel). 2023 Jan 9;16(2):633. doi: 10.3390/ma16020633.
High-temperature superconductor (HTS) bulks have demonstrated extremely intriguing potential for industrial and commercial applications due to their capability to trap significantly larger magnetic fields than conventional permanent magnets. The magnetic field in electrical rotating machines is a combination of alternating and rotational fields. In contrast, all previous research on the characterization of electromagnetic properties of HTS have solely engrossed on the alternating AC magnetic fields and the associated AC loss. This research paper gives a thorough examination of the AC loss measurement under various conditions. The obtained results are compared to the finite element-based H-formulation. The AC loss is measured at various amplitudes of circular flux density patterns and compared with the AC loss under one-dimensional alternating flux density. The loss variation has also been studied at other frequencies. The findings in this research paper provide more insights into material characterization, which will be useful in the design of future large-scale HTS applications.
高温超导（HTS）块体因其能够捕获比传统永磁体大得多的磁场，在工业和商业应用中展现出极具吸引力的潜力。旋转电机中的磁场是交变磁场和旋转磁场的组合。相比之下，此前所有关于高温超导电磁特性表征的研究都只专注于交变交流磁场及相关的交流损耗。本文对各种条件下的交流损耗测量进行了全面研究。将所得结果与基于有限元的H公式进行比较。在圆形磁通密度模式的不同幅值下测量交流损耗，并与一维交变磁通密度下的交流损耗进行比较。还研究了其他频率下的损耗变化。本文的研究结果为材料表征提供了更多见解，这将有助于未来大规模高温超导应用的设计。
