Shielding Effectiveness Analysis of Electronic Equipment Protection Box

Abstract

Due to new regulations that limit emission, the demand for electric vehicles is being increased. Electromagnetic compatibility (EMC) has become one of the most important issues to be evaluated during design phase cause of incorporating high voltage battery unit and electric driving system components into conventional vehicle architecture. In this study, shielding problem of electronic equipment protection box, which is one of the most frequently observed EMC problems in electric vehicle is analyzed. The variation of shielding effeciency by changing aperture and enclosure dimensions is investigated. The effect of different aperture geometries on shielding effectiveness is obtained in the range of 0-2 GHz numerically.

Keywords

• Automotive
• electric vehicles
• EMC
• shielding effectiveness

ELEKTRONİK EKİPMAN KORUYUCU KUTUSUNUN EKRANLAMA ETKİNLİĞİ ANALİZİ

Abstract

Emisyonları kısıtlayıcı yeni regülasyonlar neticesinde elektrikli araçlara olan talep gittikçe artmaktadır. Elektromanyetik uyumluluk (Electromagnetic Compatibility-EMC), yüksek gerilimli batarya ünitesi ve elektrikli sürüş sistemi bileşenlerinin konvansiyonel araç mimarisine dahil edilmesinden dolayı tasarım aşamasında değerlendirilmesi gereken en önemli konulardan biri haline gelmiştir. Bu çalışmada, elektrikli araçlarda sıklıkla karşılaşılan EMC problemlerinden biri olan elektronik ekipman koruyucu kutularındaki ekranlama problemi analiz edilmiştir. Açıklık ve kutu boyutları ile ekranlama etkinliğinin değişimi incelenmiştir. Farklı açıklık geometrilerinin, ekranlama etkinliği üzerindeki etkisi 0-2 GHz aralığında nümerik olarak elde edilmiştir.

Keywords

• Otomotiv
• Elektrikli araçlar
• EMC
• Ekranlama Etkinliği

References

1. 1. Akiyama, T. ve diğ. (2016) Shielding effectiveness of multi-layered Cu and PET thin films from electromagnetic interference, IEEE International Instrumentation and Measurement Technology Conference, IEEE, Taipei. doi:10.1109/I2MTC.2016.7520499
2. 2. Bahadorzadeh, M. ve Moghaddasi M. N. (2006) Improving shielding effectiveness of a rectangular metallic enclosure with aperture by using extra shielding wall, 2006 12th International Symposium on Antenna Technology and Applied Electromagnetics and Canadian Radio Sciences Conference, Montreal.
3. 3. Belkacem, F. T. ve diğ. (2011) Combined model for shielding effectiveness estimation of a metallic enclosure with apertures, Science, Measurement & Technology, IET. doi:10.1049/iet-smt.2010.0040
4. 4. Belokour, I. ve diğ. (2000) Shielding effectiveness estimation of enclosures with apertures, International Symposium on Electromagnetic Compatibility –(Cat. No. 00CH37016 ), IEEE, Washington. doi: 10.1109/ISEMC.2000.874734
5. 5. Dan, S. ve diğ. (2007) Determination of Shielding Effectiveness of Multilayer Shield by Making Use of Transmission Line Theory, 7th International Symposium on Electromagnetic Compatibility and Electromagnetic Ecology, IEEE, Saint-Petersburg. doi:10.1109/EMCECO.2007.4371656
6. 6. Dassault Systemes Simulia (2019) CST Studio Suite (Sürüm: 2019 Research Base Pack). Tedarik edilebileceği adres: https://www.3ds.com/products-services/simulia/products/cst-studio-suite/
7. 7. Fan, Y. ve diğ. (2003) Analysis on shielding effectiveness of metallic enclosures with slot, Asia-Pacific Conference on Environmental Electromagnetics, IEEE, Hangzhou. doi:10.1109/CEEM.2003.238480
8. 8. Feng, C. ve diğ. (2005) A hybrid FD-MoM technique for predicting shielding effectiveness of metallic enclosures with apertures, , IEEE Transactions on Electromagnetic Compatibility, IEEE. doi:10.1109/TEMC.2005.851726

9. 9. Gupta, K.C. (1979) Microstrip Lines and Slotlines, Artech House, Norwood.
10. 10. Güler, S. (2007) Elektromanyetik Uyumluluk Tekniklerinde Elektromanyetik Işımanın Modellenmesi, Doktora Tezi, U. Ü. Fen Bilimleri Enstitüsü, Bursa.
11. 11. Güler, S. ve diğ. (2019) EMC Design for Battery Electric Vehicle (BEV) Propulsion System, 11th International Conference on Electrical and Electronics Engineering (ELECO), IEEE, Bursa. 286-289. doi:10.23919/ELECO47770.2019.8990410
12. 12. Hao, C. ve Li D. (2014) Simplified model of shielding effectiveness of a cavity with apertures on different sides, IEEE Transactions on Electromagnetic Compatibility, IEEE. doi: 10.1109/TEMC.2013.2280152
13. 13. Hussain T. ve diğ. (2020) Improved shielding effectiveness of enclosures using symmetrically placed metallic posts, 17th International Bhurban Conference on Applied Sciences and Technology (IBCAST), IEEE, 679-685. doi: 10.1109/IBCAST47879.2020.9044504
14. 14. Ilgar T. ve diğ. (2015) Shielding effectiveness for metallic enclosures with various aperture shapes, 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), IEEE, Las Palmas. doi: 10.1109/URSI-AT-RASC.2015.7303047
15. 15. Mao X. ve Du P.A. (2010) An improved model of Robinson equivalent circuit analytical model, Science China Technological Sciences, 53(7), 1993-1999. doi: 10.1007/s11431-009-3244-9
16. 16. Mathworks Software (2019) Matlab (Sürüm: R2019b). Tedarik edilebileceği adres: http://www.figes.com.tr/
17. 17. Robinson, M.P. ve diğ. (1998) Analytical formulation for the shielding effectiveness of enclosures with apertures, IEEE Transactions on Electromagnetic Compatibility, IEEE, 40(3), 240-248. doi: 10.1109/15.709422
18. 18. Yenikaya, S. ve Akman, A. (2009) Hybrid MoM/FEM modelling of loaded enclosure with aperture in EMC problems, International Journal of RF and MW Computer Aided Journal, 19(2), 204-210. doi:10.1002/mmce.20341
19. 19. Zheng B. ve Zhongxiang S. (2008) Shielding effectiveness of cylindrical enclosures with rectangular apertures, Asia-Pacific Symposium on Electromagnetic Compatibility and 19th Internaltional Zurich Symposium on Electromagnetic Compatibility, IEEE, Singapore. 710-713. doi: 10.1109/APEMC.2008.4559974