Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (3): 1009-1016.doi: 10.13229/j.cnki.jdxbgxb20180083

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Fast equivalent method for vehicle cables under high intensity electromagnetic pulse illumination

Yu ZHAO1(),Ya⁃fei HUO2   

  1. 1. College of Communication and Engineering, Jilin University, Changchun 130012, China
    2. SAIC MOTOR Passenger Vehicle Co. , Shanghai 201800, China
  • Received:2018-01-23 Online:2019-05-01 Published:2019-07-12

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Abstract:

Fast equivalent cable bundle model is an approximate to traditional equivalent cable bundle method (ECBM), which the electromagnetic behavior of the cable bundle can be equivalent to only one cable if observed from a certain distance away. Compared with ECBM, cable grouping process is greatly simplified therefore could further save computation time and memory. In this paper, the effectiveness of fast equivalent method in full wave analysis is further investigated, and then the fast method is applied to vehicle cables to test its applicability using CST software. The influence of conductivity of ground plane and the height of irregular ground are considered according to real applications under high intensity electromagnetic pulse illumination. Finally the fast method is applied to typical locations of vehicle model and fairly good equivalent precision are achieved to show its practicability.

Key words: electromagnetic field and microwave technology, equivalent cable bundle method(ECBM), high intensity electromagnetic pulse, complex ground structure

CLC Number: 

  • TN811

Fig.1

Model of N conductors above ground"

Fig.2

Fast equivalent method model"

Fig.3

HEMP in time domain"

Fig.4

HEMP in frequency domain"

Table 1

Termination loads of complete cable bundle Ω"

终端线缆
12345670
15010010k1k500150k1M50
2501020020M5002015k50

Fig.5

Response of observed cable 0"

Table 2

Parameters of equivalent cables for"

参数G1G2G3
半径111.25
距地高度2219.119.7
导线间距d12=3.15d13=2.7d23=2.71

Table 3

Termination loads of equivalent cables for the"

终端线缆
G1G2G3
133.339376333.22
28.3318.18483.86

Fig.6

Response of observed cable 0 above ground plane with γ=1000 S/m"

Fig.7

Response of observed cable 0 above a perfect"

Fig.8

Schematic diagram of irregular ground"

Fig.9

Schematic diagram of irregular ground in CST software"

Fig.10

Response of observed cable 0 aboveirregular ground with h=10 mm"

Fig.11

Response of observed cable 0 above irregular ground with h=50 mm"

Fig.12

Model of vehicle under HEMP illumination"

Fig.13

Model of cable harness in engine compartment"

Table 4

Termination loads of complete cable bundle in engine compartment"

终端导线
1234567
115365520008001000600
246288536606580

Fig.14

Response of observed cable 0 in engine compartment"

Fig.15

Model of cable harness in cab"

Fig.16

Response of observed cable 0 in cab"

Fig.17

Model of cable harness near automobile chassis"

Table 5

Termination loads of complete cable bundle"

终端导线
1234567
150302538101501k
2100121503k1k10k25

Fig.18

Response of observed cable 0"

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[1] GAO Yin-han, AN Zhan-yang, WANG Ju-xian, WANG Tian-hao, LIU Chang-ying, ZHANG Jun-dong. Application of equivalent cable bundle method in time domain radiation sensitivity of automotive cable harness [J]. 吉林大学学报(工学版), 2015, 45(3): 946-952.
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