Examples of Numerical Modeling and Simulation for Automotive EMC - - PowerPoint PPT Presentation

▶
examples of numerical modeling and simulation for
SMART_READER_LITE
LIVE PREVIEW

Examples of Numerical Modeling and Simulation for Automotive EMC - - PowerPoint PPT Presentation

Aug 23, 2022 175 likes •589 views

Examples of Numerical Modeling and Simulation for Automotive EMC and RF Applications Marco KLINGLER & Salah BENHASSINE PSA Peugeot Citron Confrence La simulation en CEM et Hyperfrquences , Salon Microwave & RF, Paris, 3-5

slide-1
SLIDE 1

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Examples of Numerical Modeling and Simulation for Automotive EMC and RF Applications

Marco KLINGLER & Salah BENHASSINE PSA Peugeot Citroën

slide-2
SLIDE 2

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-3
SLIDE 3

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-4
SLIDE 4

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview of some simulation codes

2D magnetostatic

  • r electrostatic codes

3D electromagnetic codes Electrical simulation code 2D multi-conductor transmission line code Specific tools and codes

Frequency-domain Time-domain

slide-5
SLIDE 5

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-6
SLIDE 6

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Low frequency magnetic fields radiated by a rear battery cable (1)

slide-7
SLIDE 7

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Low frequency magnetic fields radiated by a rear battery cable (2)

N°1 N°2 N°3 N°4 N°5 N°6 Side Base Shaft

slide-8
SLIDE 8

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-9
SLIDE 9

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Vehicle details

Ref: www.peugeot.fr

Peugeot 508 Sedan Left-hand drive 5 doors Non-athermic windscreen Full metallic roof Diesel engine

slide-10
SLIDE 10

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Vehicle simulation model

Surface mesh : Wire mesh : Radius 0-thickness Conductivity : PEC

slide-11
SLIDE 11

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

FEKO simulation details

Sources : Hardware : Software : 96 CPU, 2.4 GHz, 4 clusters In core : max 120 Gbytes RAM Out of core : max 544 Gbytes HD v 5R.2 & 5R.3 8 dipoles (1 mm radius) Voltage source : 1V Impedance : 74Ω Ground : PEC

11

slide-12
SLIDE 12

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

MWS simulation details

Lines per wavelength : 10 Mesh limit ratio : Automatic + Subgriding + PBA 10 Mesh Generation : Mesh step (min , max) : ≈ 1.58 mm , ≈ 30.5 mm Refine at PEC : 2 6 384 863 Mesh cells : ≈ 5.660 x 2.825 x 1.963 m3 Surrounding space : 0.5 m Volume size : Boundaries : 537 x 332 x 251 Grid size :

12

Surrounding : open (add space) Ground : PEC Open (spacing) and Electric wall (PEC)

slide-13
SLIDE 13

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

In the glove box

  • 40
  • 30
  • 20
  • 10

10 20 100 200 300 400 500 600 700 800 900 1000

Frequency (MHz) E / Ecal (dB)

FEKO - Set of 6 dipoles - 1GHz MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas

  • 40
  • 30
  • 20
  • 10

10 20 100 200 300 400 500 600 700 800 900 1000

Frequency (MHz) E / Ecal (dB)

FEKO - Set of 6 dipoles - 1GHz MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas

Front - Horizontal Front - Vertical

10 dB / div 10 dB / div

  • M. Klingler, S. Benhassine & Y. Merle : Comparisons Between Time-Domain

and Frequency-Domain Simulations Applied to an Entire Vehicle – Workshop presentation – 9th International Symposium on Electromagnetic Compatibility “EMC Europe 2010”, Wroclaw, Poland, 13-17 September 2010

13

P10

slide-14
SLIDE 14

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Near the battery

  • 30
  • 20
  • 10

10 20 30 100 200 300 400 500 600 700 800 900 1000

Frequency (MHz) E / Ecal (dB)

FEKO - Set of 6 dipoles - 1GHz MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas

  • 30
  • 20
  • 10

10 20 30 100 200 300 400 500 600 700 800 900 1000

Frequency (MHz) E / Ecal (dB)

FEKO - Set of 6 dipoles - 1GHz MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas

Front - Horizontal Front - Vertical

10 dB / div 10 dB / div

P04

  • M. Klingler, S. Benhassine & Y. Merle : Comparisons Between Time-Domain

and Frequency-Domain Simulations Applied to an Entire Vehicle – Workshop presentation – 9th International Symposium on Electromagnetic Compatibility “EMC Europe 2010”, Wroclaw, Poland, 13-17 September 2010

slide-15
SLIDE 15

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

On the dash board

  • 40
  • 30
  • 20
  • 10

10 20 100 200 300 400 500 600

Frequency (MHz) E / Ecal (dB)

Simulation Measurement

  • 40
  • 30
  • 20
  • 10

10 20 100 200 300 400 500 600

Frequency (MHz) E / Ecal (dB)

Simulation Measurement

Front - Vertical Left - Vertical

10 dB / div 10 dB / div

???

  • M. Klingler & S. Benhassine : Comparison of Electric Field Levels Obtained

Experimentally and by Simulation at Different Points in Entire Vehicles – Workshop presentation – 8th International Symposium on Electromagnetic Compatibility “EMC Europe 2008”, Hamburg, Germany, 8-12 September 2008

15

EQ3

slide-16
SLIDE 16

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Details of the steering column

Steering wheel Foot pedals Electric discontinuity

slide-17
SLIDE 17

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-18
SLIDE 18

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Fields distribution in a vehicle at different frequencies (1)

slide-19
SLIDE 19

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Fields distribution in a vehicle at different frequencies (2)

slide-20
SLIDE 20

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-21
SLIDE 21

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Common-mode current on a 3-phase shielded harness

0.5m 1m

E-field observation point 3-phase source 3-phase load Perfect ground plane

5cm

slide-22
SLIDE 22

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Shielded cable configuration

Cable parameters Shield parameters

slide-23
SLIDE 23

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

3-phase harness configuration

XY coordinate

slide-24
SLIDE 24

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Port connections

1Ω or 10mΩ 1Ω or 10mΩ Common mode current measurement Housing to chassis resistance

slide-25
SLIDE 25

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Common-mode current results

≈20-25dB impact on common-mode currents

20 dB / div

slide-26
SLIDE 26

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-27
SLIDE 27

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

FM radio antenna evaluation

Model of the antenna proposed by the supplier Radiation pattern for the entire European FM band

slide-28
SLIDE 28

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-29
SLIDE 29

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Remote central locking radio-coverage evaluation

Mesh of the vehicle and PCB + antenna

COM2008

Radio coverage levels 60 meters around the vehicle at 1 meter height

315 MHz or 433 MHz

slide-30
SLIDE 30

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-31
SLIDE 31

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Effects of the car body on radio-coverage for a specific antenna

Vehicle A Vehicle B

slide-32
SLIDE 32

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Close interactions between the antenna and its environment

Current densities

Vehicle A Vehicle B

slide-33
SLIDE 33

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Influence of the seats (1) Nominal position

60 dB

Near E-field level

60 dB

Vehicle A Vehicle B

slide-34
SLIDE 34

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Influence of the seats (2) 11 cm backwards

Vehicle A Vehicle B

Near E-field level

60 dB 60 dB

slide-35
SLIDE 35

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Influence of the seats (3) 11 cm forwards

Vehicle A Vehicle B

Near E-field level

60 dB 60 dB

slide-36
SLIDE 36

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-37
SLIDE 37

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Tire pressure receiver positioning (1)

60 receiver positions (3 x 5 x 4) 8 valve positions

slide-38
SLIDE 38

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Tire pressure receiver positioning (2)

Average over the 8 valve positions

60 receiver positions 2.5 dB / div

slide-39
SLIDE 39

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview

Overview of different simulation tools Modeling and simulation for EMC applications Low frequency magnetic fields radiated by a rear battery cable Field levels in a vehicle during vehicle immunity tests Field distribution in a vehicle at different frequencies Common-mode currents on a 3-phase shielded harness Modeling and simulation for RF applications FM radio antenna evaluation Remote central locking radio-coverage evaluation Effects of the car body on radio-coverage for a specific antenna Tire pressure receiver positioning Conclusions

slide-40
SLIDE 40

Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Conclusions

Today’s simulation tools offer the possibilities to solve many EMC and RF

problems

The precision of the results will mainly depend on the correctness and the

representativeness of the models

For complex EMC and RF environments, results are often compared in a relative

manner without trying to obtain the absolute values

For simple RF environments, absolute values can be expected for antenna input

impedances and radiation patterns

Modeling and simulation issues are mainly industrial issues, not scientific or

technical issues