复合材料飞机接地回流网络建模与阻抗分析

刘建英; 隋政; 张起浩; 杨占刚

doi:10.13700/j.bh.1001-5965.2020.0083

复合材料飞机接地回流网络建模与阻抗分析

doi: 10.13700/j.bh.1001-5965.2020.0083

中国民航大学电子信息与自动化学院, 天津 300300

基金项目:

航空科学基金 20170267002

中央高校基本科研业务费专项资金 3122018D005

天津市高等学校创新团队培养计划 TD13-5071

详细信息

作者简介:
刘建英女，硕士，副教授，硕士生导师。主要研究方向：多电飞机电力系统。

杨占刚男，博士，副教授，硕士生导师。主要研究方向：多电飞机电力系统。

通讯作者:
杨占刚, E-mail:yangcauc@163.com

中图分类号: V242.2;TB553
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-05
- 录用日期: 2020-06-06
- 网络出版日期: 2021-05-20

Modeling and impedance analysis of composite material aircraft grounded return network

College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China

Funds:

Aeronautical Science Foundation of China 20170267002

the Fundamental Research Funds of the Central Universities 3122018D005

Funding for the University Innovation Team Training Program of Tianjin TD13-5071

More Information

Corresponding author: YANG Zhangang, E-mail:yangcauc@163.com

摘要

摘要:
为保证飞行安全，复合材料飞机需增设金属电流回流网络来满足机上电气系统的接地需求。针对复合材料与金属电流回流网络搭接的阻抗计算问题，采用一种基于导体和电介质的部分元等效电路（PEEC）法，对包括金属导轨和复合材料蒙皮的接地回流网络进行了建模，计算接地回流网络在不同参数、结构下的阻抗，实现任意节点之间的阻抗计算，并分析了不同频率下接地回流网络中构件部分参数对阻抗值的影响及不同类别接地点间阻抗值的差异。仿真计算实例验证了所提方法的适用性及计算结果的正确性，可为复合材料飞机接地回流网络在故障管理及电气保护系统设计等方面提供参考。
- 复合材料飞机 /
- 接地 /
- 电流回流网络 /
- 阻抗 /
- 部分元等效电路(PEEC)法
Abstract:
To ensure flight safety, a metal current return network is added for composite material aircraft to meet the grounding requirements of the electrical system on board. For the calculation problem of the impedance of the composite material and the metal current return network, a Partial Element Equivalent Circuit (PEEC) method is used based on conductors and dielectrics. The grounded reflux network is modeled including metal bar and composite material skin to calculate the impedance under different parameters and structures as well as the impedance between any nodes, and the influence of some component parameters on the impedance value is analyzed. The simulation calculation results verify the applicability of the algorithm in this paper and the correctness of calculation results, and provide further references for the composite material aircraft grounded reflux network in terms of fault management and electrical protection system design.
- composite material aircraft /
- grounding /
- current return network /
- impedance /
- Partial Element Equivalent Ciruit (PEEC) method

HTML全文

图 1 复合材料蒙皮与金属接地回流网络搭接模型

Figure 1. Overlap model of composite material skin and metal grounded return network

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图 2 经过网格划分后的2个相邻导体单元示意图

Figure 2. Schematic diagram of two adjacent conductorelements after meshing

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图 3 两个相邻导体单元的PEEC等效电路

Figure 3. PEEC equivalent circuit of two adjacent conductor units

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图 4 两个相邻电介质单元的PEEC等效电路

Figure 4. PEEC equivalent circuit of two adjacent dielectric units

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图 5 金属导轨截面形状及尺寸

Figure 5. Cross-sectional shape and size of metal bar

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图 6 三种方法计算结果对比

Figure 6. Comparison of calculation results among three methods

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图 7 金属导轨阻抗计算结果

Figure 7. Calculation results of metal bar impedance

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图 8 搭接复合材料蒙皮前后阻抗计算结果

Figure 8. Impedance calculation results of overlapped andnon-lapped composite material skin

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图 9 搭接不同电导率的复合材料蒙皮的阻抗计算结果

Figure 9. Impedance calculation results of overlapped composite material skin with different conductivity

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图 10 不同截面形状金属导轨的阻抗计算结果

Figure 10. Impedance calculation results of different cross-sectional shapes of metal bar

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图 11 复合材料蒙皮与接地回流网络搭接模型

Figure 11. Overlap model of composite material skin and grounded return network

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图 12 接地回流网络平面示意图

Figure 12. Schematic diagram of grounded return network

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图 13 边界节点与边界节点间的阻抗

Figure 13. Impedance between boundary nodes

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图 14 边界节点与内部节点间的阻抗

Figure 14. Impedance between boundary node and internal node

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图 15 内部节点与内部节点间的阻抗

Figure 15. Impedance between internal nodes

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表 1 材料对应电磁参数

Table 1. Electromagnetic parameters of materials

材料	电导率/(S·m^-1)	相对磁导率/(H·m^-1)
铝	3.77×10⁷	1.0
CFRP	2×10⁴	1.0

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表 2 部件外部尺寸

Table 2. External dimensions of components

部件	长/mm	宽/mm	高/mm
金属导轨	2 000	50	30
复合材料板	2 000	1 000	4

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表 3 仿真项目及相关参数设置

Table 3. Simulation project and related parameter setting

项目名称	金属导轨截面形状	搭接的CFRP电导率/(S·m^-1)
A	工字形
B	工字形	20 000
C	工字形	2 000
D	正方形	20 000

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表 4 不同参数设置下的节点间阻抗值

Table 4. Impedance between nodes under different parameter settings

频率/Hz	阻抗/Ω
频率/Hz	A	B	C	D
0	7.737×10^-5	7.426×10^-5	7.427×10^-5	7.426×10^-5
10⁰	7.773×10^-5	7.463×10^-5	7.464×10^-5	8.037×10^-5
10¹	1.079×10^-4	1.048×10^-4	1.048×10^-4	1.175×10^-4
10²	7.460×10^-4	7.325×10^-4	7.326×10^-4	8.586×10^-4
10³	7.157×10^-3	7.017×10^-3	7.030×10^-3	8.191×10^-3
10⁴	7.064×10^-2	6.882×10^-2	6.930×10^-2	7.983×10^-2
10⁵	7.024×10^-1	6.841×10^-1	6.843×10^-1	7.926×10^-1
10⁶	7.015	6.832	6.834	7.913

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