A Study of Partial Discharge in High Voltage DC Distribution Systems for Hybrid Electric Aircraft
A Study of Partial Discharge in High Voltage DC Distribution Systems for Hybrid Electric Aircraft
复制标题
混合动力飞机高压直流配电系统局部放电研究
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
C. Lents
中科院分区：
文献类型：
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作者：
Wu Xin;R. Mahmoudi;C. Lents
+1兆瓦混合动力推进系统的电力传动系统需要在高电压（+1000 V）下运行，以控制配电馈线和组件的重量。在商用飞机的运行高度上，引起局部放电（PD）的起始电压和引起瞬间失效的电弧显著降低。因此，目前主要通过测试经验开发的设计实践将操作限制在230 VAC，以防止PC和电弧。目前的研究正在开发一种通用的方法来首先预测高压硬件中的电场，当与预测PD起始电压作为海拔函数的模型相结合时，将提供一种确定PD是否会发生的分析方法。这是开发设计系统的第一步，用于设计配电硬件在高压下运行而不会产生局部放电。电缆系统为这种通用方法提供了具体应用。
The electric drive train of +1 MW hybrid electric propulsion systems will need to operate at high voltages (+1000 V) in order to manage the weight of the electric distribution feeders and components. The initiation voltage for partial discharge (PD), which causes damage over time decreasing life, and arcing, which can lead to instantaneous failure, is significantly reduced at the operating altitudes of commercial aircraft. Thus, current design practices, developed mainly through testing experience, limit operation to 230 VAC to prevent PC and arc. The current research is developing a general approach for first predicting the electric field in high voltage hardware, which when coupled with a model for predicting PD inception voltage as a function of altitude will provide an analytical method for determining if PD will occur. This is the first step in developing a design system for designing distribution hardware to operate at high voltage without incurring PD. Cable systems provide the concrete application for this general approach.