Addressing the Challenges of Lightweight Aircraft Electric Propulsion through Electrical Machines with Air-gap Windings
Addressing the Challenges of Lightweight Aircraft Electric Propulsion through Electrical Machines with Air-gap Windings
复制标题
通过采用气隙绕组的电机应对轻型飞机电力推进的挑战
DOI：
10.1109/ecce.2019.8911841
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
I. Bond
中科院分区：
文献类型：
--
作者：
P. Mellor;C. Heath;S. Collins;N. Simpson;I. Bond
用于飞机推进的功率密度电驱动的发展可能需要彻底改变电机的制造方式。软磁材料的磁通承载限制和重量正在成为进一步提高功率密度的主要障碍。用气隙绕组拓扑结构取代传统的齿形定子设计已被证明具有重量优势。然而，气隙绕组的实现提出了新的设计挑战和要求。本文回顾了这些要求，并提出了一种新的多功能材料解决方案的基础上，玻璃增强铝导体复合材料。使用从这种新的绕组层材料的样品测得的电和热性能的重量节省的潜力进行评估，对现有的飞机电力推进电机开发的旋翼机应用。研究结果表明，它可能会减少多达60%的定子有源组件的重量，虽然这些好处是部分抵消了永磁转子的重量增加。
The development of power dense electrical drives for aircraft propulsion is likely to require radical changes to the way electrical machines are manufactured. The flux carrying limitations and weight of soft magnetic materials are becoming a major barrier to further improvements in power density. The replacement of conventional toothed stator designs with air-gap winding topologies have been shown to have weight advantages. However, the implementation of an air-gap winding imposes new design challenges and requirements. The paper reviews these requirements and proposes a novel multi-functional material solution based on a glass reinforced aluminum conductor composite. Using electrical and thermal properties measured from a sample of this new winding layer material the weight saving potential is assessed against an existing aircraft electric propulsion motor developed for a rotorcraft application. The findings suggest that it may be possible to reduce the weight of the stator active components by as much as 60%, although these benefits are partly offset by an increase in the weight of the permanent magnet rotor.