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엔진 발전기 추가 적용을 통한 군(軍) 지휘·지원차량의 광대역 전자파 방사 노이즈 개선

Improvement of Broadband Radiated Emission Noise in Military Tactical Vehicle by Using Additional Alternator in Engine

  • Seo, Suk Ho (Defense Agency for Technology and Quality) ;
  • Ku, Ki Beom (Defense Agency for Technology and Quality) ;
  • Kim, Ji Hoon (Defense Agency for Technology and Quality) ;
  • Oh, Dae San (Defense Agency for Technology and Quality)
  • 투고 : 2020.06.18
  • 심사 : 2020.09.04
  • 발행 : 2020.09.30

초록

현재 운영되고 있는 군 지휘·지원차량은 상용차량의 일부를 개조하여 제작되었으며, 군에서 필요한 통신장비 운용환경을 확보하기 위하여 통신실 내부에 별도의 컨버터를 장착하는 전원공급시스템이 적용되었다. 하지만, 이러한 전원공급시스템은 전자파 방사 노이즈를 발생시켜 차량에서 무전교신 시 잦은 잡음과 통신감도 저하 등의 문제점이 발생되었다. 이를 개선하기 위해, 엔진에 발전기를 추가 장착하여 통신장비에 필요한 전력을 공급받도록 전원공급시스템을 변경하였다. 추가 장착된 발전기는 통신장비가 운용되는 통신실과 완전히 분리된 엔진 룸에 위치하도록 설계되어 전원공급시스템에서 발생되는 전자파 방사 노이즈에 의한 영향을 감소시켜줄 것으로 기대되었다. 개선된 시스템의 효과를 검증하기 위하여 기존 차량과 신규 전원공급시스템이 적용된 차량에 대하여 광대역 방사시험을 각각 수행하였고 측정 결과를 비교하였다. 시험 결과 신규 전원공급시스템이 적용된 차량의 광대역 방사 노이즈는 국내 자동차 안전기준에 모두 만족하였으며, 기존 차량 대비 일부 주파수 구간을 제외한 대부분의 구간에서 감소함을 확인할 수 있었다. 특히, 차량 우측면의 수직편파 170~225 MHz 구간에서 최대 10.751 dB𝜇V/m 감소하였다.

The military tactical vehicle currently being operated is manufactured by improving the parts of commercial vehicles. In addition, the power supply system is applied by installing a separate converter inside the communication room to secure the operating environment of communication equipment. On the other hand, due to electromagnetic radiation noise, there are problems in frequent noise and deterioration in communication sensitivity during wireless communication in vehicles. To improve these, an advanced power supply system is applied, which is also equipped with an alternator to receive power required for communication equipment reducing broadband electromagnetic radiation noise. An additionally installed alternator, which is located in the engine room, is separated from the communication room where communication equipment is operated and is expected to reduce the effect of electromagnetic radiation noise generated from the power supply system. To verify these, a broadband radiation test was performed on a previous and advanced one. As a result, the broadband radiation noise of vehicles with an applied advanced power supply system satisfied all of the domestic vehicle safety standards and reduced in most of the sections except for some frequencies compared to previous typed vehicles. In particular, broadband radiation noise was decreased by up to 10.751 dB𝜇V/m in the vertical sections in 170 to 200 MHz on the right side of the vehicle.

키워드

참고문헌

  1. D. H. Jung, C. H. Sung, and H. S. Song, "A Study on the Development of Light Military Tactical Vehicles with high Mobility based on Commercial Vehicle Technology", Proceeding of 2017 Spring Season Korean Society of Automotive Engineers, The Korean Society of Automotive Engineers, Jeju, Korea, pp. 1220, May 2017.
  2. D. S. Oh, H. J. Im, D. S. Kang, and J. M. Kim, "A Study on Damage Prevention Improvement of the Axle Assembly for a Civilian Modified Military Jeep", Proceeding of 2016 Spring Season Korean Society for Quality Management, The Korean Society for Quality Management, Seoul, Korea, pp. 305-306, May 2016.
  3. J. H. Park, "A Study of Electromagnetic Wave Standard and Policy Method for Military Inverter Appliance", Journal of The Korean Institute of Power Electronics, Vol. 24, No. 4, pp. 63-69, May 2019.
  4. J. H. Kim, W. S. Che, H. J. Kim, S. J. Kim, and Y. S. Lim, "Case Study of EMI Measurement and Attenuation Methods in Commercial Vehicles", Proceeding of 2010 Fall Season Korean Society of Automotive Engineers, The Korean Society of Automotive Engineers, Busan, Korea, pp. 136-140, Sep. 2010.
  5. J. H. Kim, J. S. Kim, S. Y. An, and J. H. Kim, "A Study of Electromagnetic Wave for Wireless Electronic Power Transfer System", Korea Electromagnetic Engineering Society, Vol. 27, No. 1, pp. 54-65, Jan. 2016.
  6. G. K. Oh, "Complex and Multi Trend of the Electromagnetic Wave Reduction Materials and Component", Korea Electromagnetic Engineering Society, Vol. 20, No. 1, pp. 103-110, Jan. 2009.
  7. S. M. Gwon and H. G. Woo, "A Study on Electromagnetic Interference of Electric Vehicles with Variations of Charging Device Inlet Location", Transaction of the Korean Society of Automotive Engineers, Vol. 24, No. 6, pp. 694-701, Nov. 2016. DOI: http://dx.doi.org/10.7467/KSAE.2016.24.6.694
  8. Y. G. Kang, "Improved Design Method of a EMI(Electro Magnetic Interference Noise for Wireless Video System in Vehicle", Journal of The Institute of Electronics Engineers of Korea, Vol. 49, No. 12, pp. 277-284, Dec. 2012. DOI: https://doi.org/10.5573/ieek.2012.49.12.277
  9. D. Y. Kim and S. S. Yoon, "Design of Wideband Electromagnetic Wave Absorber Using Magnetic Materials", Journal of the Korean Magnetics Society, Vol. 22, No. 6, pp. 210-215, Dec. 2012. DOI: http://dx.doi.org/10.4283/JKMS.2012.22.6.210
  10. S. D. Choi and D. C. Park "Power electromagnetic waves noise countermeasures by switching and study of circuit design improvement", The Journal of Korean Institute of Information Technology, Vol. 3, No. 6, pp. 23-28, Dec. 2005.
  11. J. S. An, H. B. Kwon, S. B. Kim, and G. J. Yong, "Considerations for Radiated Broadband Electromagnetic Emission from Vehicle", Proceeding of 2010 Spring Season Korean Society of Automotive Engineers, The Korean Society of Automotive Engineers, Jeju, Korea, pp. 1297-1301, May 2010.
  12. S. B. Kim, J. K. Shin, S. S. Kim, and J. S. Shin, "A Study on Measuring Electromagnetic Interference Generated by the Cooling Fan Fitted to Vehicle", Proceeding of 2010 Fall Season Korean Society of Automotive Engineers, The Korean Society of Automotive Engineers, Busan, Korea, pp. 1447-1452, Sep. 2006.
  13. J. W. Kim, J. H. Lee, H. C. Woo, J. D. Ji, and W. Y. Chae, "Evaluation of Electromagnetic Wave Interference for Development of the Mobile Wireless Charger for Vehicle", Proceeding of 2015 Fall Season Korean Society of Manufacturing Technology Engineers, The Korean Society of Manufacturing Technology Engineers, Seoul, Korea, pp. 236, Oct. 2015.
  14. Ministry of Land, Infrastructure and Transport Enforcement Ordinance Number 00700, "The Regulation of Performance and Standard for Automobile and Automobile Component", Feb. 2020.
  15. Ministry of Land, Infrastructure and Transport Rule for Operation, "The Regulation of Performance and Standard for Automobile and Automobile Component", Feb. 2020.