Insulation Design and Optimization of Laminated Busbar for More Electric Aircraft Motor Drive under High Altitude and Depressurized Environments

Zhao Yuan, Yalin Wang, A. Emon, Zhongjing Wang, B. Narayanasamy, A. Deshpande, Hongwu Peng, F. Luo
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引用次数: 6

Abstract

More electric aircrafts (MEA) recently attracts increasing attention due to improvements to efficiency, reduce weight, fuel cost, and carbon emissions. High-specific-power machines, and corresponding integrated motor drives have been identified as the crucial enabling technology for the realization of more electric aircraft propulsion. Such a concept requires converter working under depressurized environments, which poses challenges to the electric insulation due to partial discharge (PD). This threatens the reliability of the drive system. This paper proposes an insulation design and optimization methodology for a laminated busbar in a 450-kVA electric-aircraft motor drive. The design aims to avoid any partial discharge in the insulation and also achieves optimized busbar stray inductance. To achieve the targets, partial discharge inception voltage (PDIV) with respect to air pressure was obtained by the experiment, and the experimental results were used as PD -free design criteria in electric field simulation of the laminated busbar. Then, the insulation structure regarding insulation material selection and thickness selection was optimized by taking both the PD-free criteria and parasitic inductance into consideration. The proposed design procedure provides valuable references for future laminated busbar design, which is used for the MEA system.
高空降压环境下多电飞机电机驱动层压母线的绝缘设计与优化
最近,电动飞机(MEA)因提高效率、减轻重量、降低燃料成本和减少碳排放而受到越来越多的关注。高比功率电机及其相应的集成电机驱动已被确定为实现更多电动飞机推进的关键使能技术。这种概念要求变流器在降压环境下工作,这对局部放电(PD)造成的电绝缘提出了挑战。这将威胁到驱动系统的可靠性。提出了一种450kva电动飞机电机驱动层压母线的绝缘设计与优化方法。该设计旨在避免绝缘部分放电,并实现母线杂散电感的优化。为实现上述目标,通过实验获得了局部放电起始电压(PDIV)与气压的关系,并将实验结果作为无PD设计准则用于层压母线的电场仿真。然后,综合考虑无pd准则和寄生电感,对绝缘材料的选择和厚度的选择进行了优化。所提出的设计方法为今后叠层母线的设计提供了有价值的参考,并应用于MEA系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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