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

Examples of Numerical Modeling and Simulation for Automotive EMC and RF Applications Marco KLINGLER & Salah BENHASSINE PSA Peugeot Citroën 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 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 Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Overview of some simulation codes Frequency-domain Time-domain 2D magnetostatic 3D electromagnetic codes or electrostatic codes Electrical Specific tools 2D multi-conductor simulation code and codes transmission line code 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 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) 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 Side Base N°4 N°5 N°6 Shaft 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 Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Vehicle details � Peugeot 508 � Sedan � Non-athermic windscreen � Left-hand drive � Full metallic roof � 5 doors � Diesel engine Ref: www.peugeot.fr Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

Vehicle simulation model Surface mesh : 0-thickness Wire mesh : Radius Conductivity : PEC Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

FEKO simulation details Hardware : 96 CPU, 2.4 GHz, 4 clusters In core : max 120 Gbytes RAM Out of core : max 544 Gbytes HD Software : v 5R.2 & 5R.3 Sources : 8 dipoles (1 mm radius) Voltage source : 1V Impedance : 74 Ω Ground : PEC Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012 11

MWS simulation details Lines per wavelength : 10 Mesh limit ratio : 10 Mesh Generation : Automatic + Subgriding + PBA Refine at PEC : 2 Mesh step (min , max) : ≈ 1.58 mm , ≈ 30.5 mm Mesh cells : 6 384 863 Open (spacing) and Electric wall (PEC) Boundaries : Surrounding space : 0.5 m Volume size : ≈ 5.660 x 2.825 x 1.963 m 3 Grid size : 537 x 332 x 251 Surrounding : open (add space) Ground : PEC Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012 12

In the glove box 20 Front - Horizontal 10 0 P10 E / Ecal (dB) 10 dB / div -10 -20 FEKO - Set of 6 dipoles - 1GHz -30 MWS - Plane wave - 1GHz M. Klingler, S. Benhassine & Y. Merle : Comparisons Between Time-Domain and Frequency-Domain Simulations Applied to an Entire Vehicle – Workshop Measurement - 2 log-periodic antennas presentation – 9 th International Symposium on Electromagnetic Compatibility -40 0 100 200 300 400 500 600 700 800 900 1000 “EMC Europe 2010”, Wroclaw, Poland, 13-17 September 2010 Frequency (MHz) 20 Front - Vertical 10 0 E / Ecal (dB) 10 dB / div -10 -20 FEKO - Set of 6 dipoles - 1GHz -30 MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas -40 0 100 200 300 400 500 600 700 800 900 1000 Frequency (MHz) Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012 13

Near the battery 30 Front - Horizontal 20 10 E / Ecal (dB) 10 dB / div 0 P04 -10 FEKO - Set of 6 dipoles - 1GHz -20 MWS - Plane wave - 1GHz M. Klingler, S. Benhassine & Y. Merle : Comparisons Between Time-Domain and Frequency-Domain Simulations Applied to an Entire Vehicle – Workshop Measurement - 2 log-periodic antennas presentation – 9 th International Symposium on Electromagnetic Compatibility -30 0 100 200 300 400 500 600 700 800 900 1000 “EMC Europe 2010”, Wroclaw, Poland, 13-17 September 2010 Frequency (MHz) 30 Front - Vertical 20 10 E / Ecal (dB) 10 dB / div 0 -10 FEKO - Set of 6 dipoles - 1GHz -20 MWS - Plane wave - 1GHz Measurement - 2 log-periodic antennas -30 0 100 200 300 400 500 600 700 800 900 1000 Frequency (MHz) Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012

On the dash board 20 Front - Vertical 10 0 E / Ecal (dB) 10 dB / div -10 EQ3 -20 -30 M. Klingler & S. Benhassine : Comparison of Electric Field Levels Obtained Simulation Measurement Experimentally and by Simulation at Different Points in Entire Vehicles – Workshop presentation – 8 th International Symposium on Electromagnetic -40 0 100 200 300 400 500 600 Compatibility “EMC Europe 2008”, Hamburg, Germany, 8-12 September ??? 2008 Frequency (MHz) 20 Left - Vertical 10 0 E / Ecal (dB) 10 dB / div -10 -20 -30 Simulation Measurement -40 0 100 200 300 400 500 600 Frequency (MHz) Conférence « La simulation en CEM et Hyperfréquences », Salon Microwave & RF, Paris, 3-5 avril 2012 15

Details of the steering column Electric discontinuity Steering wheel Foot pedals 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 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