Examples of Numerical Modeling and Simulation for ... · Conférence « La simulation en CEM et...
Transcript of Examples of Numerical Modeling and Simulation for ... · Conférence « La simulation en CEM et...
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 BENHASSINEPSA Peugeot Citroën
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Overview of some simulation codes
2D magnetostaticor electrostatic codes3D electromagnetic codes
Electrical simulation code2D multi-conductor
transmission line codeSpecific tools
and codes
Frequency-domain Time-domain
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Low frequency magnetic fields radiatedby a rear battery cable (1)
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Low frequency magnetic fields radiatedby a rear battery cable (2)
N°1 N°2 N°3
N°4 N°5 N°6
Sid
e
Base
Shaft
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Vehicle details
Ref: www.peugeot.fr
Peugeot 508SedanLeft-hand drive5 doors
Non-athermic windscreenFull metallic roofDiesel engine
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Vehicle simulation modelSurface mesh :
Wire mesh : Radius
0-thickness
Conductivity : PEC
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 clustersIn core : max 120 Gbytes RAMOut of core : max 544 Gbytes HD
v 5R.2 & 5R.3
8 dipoles (1 mm radius)Voltage source : 1VImpedance : 74Ω
Ground : PEC
11
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
MWS simulation detailsLines per wavelength : 10Mesh limit ratio :
Automatic + Subgriding + PBA10
Mesh Generation :
Mesh step (min , max) : ≈ 1.58 mm , ≈ 30.5 mm Refine at PEC : 2
6 384 863Mesh cells :
≈ 5.660 x 2.825 x 1.963 m3Surrounding space : 0.5 m Volume size :
Boundaries :
537 x 332 x 251Grid size :
12
Surrounding : open (add space)Ground : PEC
Open (spacing) and Electric wall (PEC)
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
In the glove box
-40
-30
-20
-10
0
10
20
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
E / E
cal (
dB)
FEKO - Set of 6 dipoles - 1GHz
MWS - Plane wave - 1GHz
Measurement - 2 log-periodic antennas
-40
-30
-20
-10
0
10
20
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
E / E
cal (
dB)
FEKO - Set of 6 dipoles - 1GHz
MWS - Plane wave - 1GHz
Measurement - 2 log-periodic antennas
Front - Horizontal
Front - Vertical
10 d
B /
div
10 d
B /
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
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Near the battery
-30
-20
-10
0
10
20
30
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
E / E
cal (
dB)
FEKO - Set of 6 dipoles - 1GHz
MWS - Plane wave - 1GHz
Measurement - 2 log-periodic antennas
-30
-20
-10
0
10
20
30
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
E / E
cal (
dB)
FEKO - Set of 6 dipoles - 1GHz
MWS - Plane wave - 1GHz
Measurement - 2 log-periodic antennas
Front - Horizontal
Front - Vertical
10 d
B /
div
10 d
B /
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
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
On the dash board
-40
-30
-20
-10
0
10
20
0 100 200 300 400 500 600
Frequency (MHz)
E / E
cal (
dB)
Simulation Measurement
-40
-30
-20
-10
0
10
20
0 100 200 300 400 500 600
Frequency (MHz)
E / E
cal (
dB)
Simulation Measurement
Front - Vertical
Left - Vertical
10 d
B /
div
10 d
B /
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
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Details of the steering column
Steering wheel Foot pedals
Electricdiscontinuity
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Fields distribution in a vehicle at different frequencies (1)
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Fields distribution in a vehicle at different frequencies (2)
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
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-phasesource
3-phaseload
Perfect ground plane
5cm
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Shielded cable configurationCable parameters Shield parameters
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
3-phase harness configuration
XY coordinate
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Port connections
1Ω or 10mΩ 1Ω or 10mΩ
Common modecurrent measurement
Housing tochassis
resistance
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 d
B /
div
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
FM radio antenna evaluation
Model of the antenna proposedby the supplier
Radiation pattern for the entireEuropean FM band
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
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 metersaround the vehicle at 1 meter height
315 MHz or 433 MHz
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
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
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
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
Influence of the seats (1)Nominal position
60 d
B
Near E-field level
60 d
B
Vehicle A Vehicle B
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 d
B
60 d
B
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 d
B
60 d
B
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
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
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
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
OverviewOverview of different simulation toolsModeling and simulation for EMC applications
Low frequency magnetic fields radiated by a rear battery cableField levels in a vehicle during vehicle immunity testsField distribution in a vehicle at different frequenciesCommon-mode currents on a 3-phase shielded harness
Modeling and simulation for RF applicationsFM radio antenna evaluationRemote central locking radio-coverage evaluationEffects of the car body on radio-coverage for a specific antennaTire pressure receiver positioning
Conclusions
Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012
ConclusionsToday’s simulation tools offer the possibilities to solve many EMC and RF problemsThe precision of the results will mainly depend on the correctness and the representativeness of the modelsFor complex EMC and RF environments, results are often compared in a relative manner without trying to obtain the absolute valuesFor simple RF environments, absolute values can be expected for antenna input impedances and radiation patternsModeling and simulation issues are mainly industrial issues, not scientific or technical issues