Fully superconducting machine for electric aircraft propulsion: study of AC loss for HTS stator
Fully superconducting machine for electric aircraft propulsion: study of AC loss for HTS stator
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DOI：
10.1088/1361-6668/ab9687
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发表时间：
2019-12
影响因子：
3.6
通讯作者：
Fangjing Weng;Min Zhang;Tian Lan;Yawei Wang;W. Yuan
中科院分区：
文献类型：
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作者：
Fangjing Weng;Min Zhang;Tian Lan;Yawei Wang;W. Yuan
全超导电机提供未来电力飞机推进所需的高功率密度。然而，超导绕组在AC电机环境中产生AC损耗。这些交流损耗在低温下很难消除，并且它们给飞机冷却系统增加了额外的负担。由于高温超导电机的冷却损失大，定子的交流损耗是高温超导电机设计中的关键问题之一。为了评估超导定子绕组在旋转电机环境中的交流损耗，设计并搭建了一种新型轴向磁通高温超导电机平台。交流损耗测量是基于液氮的量热蒸发。在旋转磁场条件下测量了高温超导定子的总交流损耗和磁化损耗。该平台代表了研究如何最大限度地减少HTS定子中的交流损耗的关键要素，以最大限度地提高全HTS电机的效率。
Fully superconducting machines provide the high power density required for future electric aircraft propulsion. However, superconducting windings generate AC losses in AC electrical machine environments. These AC losses are difficult to eliminate at low temperatures, and they add an extra burden to the aircraft cooling system. Due to the heavy cooling penalty, AC loss in the HTS stator is one of the key topics in HTS machine design. In order to evaluate the AC loss of superconducting stator windings in a rotational machine environment, we designed and built a novel axial-flux high temperature superconducting (HTS) machine platform. The AC loss measurement is based on the calorimetric boiling-off of liquid nitrogen. Both total AC loss and magnetisation loss in the HTS stator are measured under the condition of a rotational magnetic field. This platform represents a key element in studying ways to minimise AC losses in an HTS stator, in order to maximise the efficiency of fully HTS machines.