전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제19권3호
  • /
  • Pages.211-219
  • /
  • 2014
  • /
  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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저전압 대전류 LLC 공진형 컨버터를 이용한 그린 PC용 전원공급장치 설계

Design of Power Supply for Green PC using Low Voltage High Current LLC Resonant Converter

  • Yoo, Young-Do (R/D Center, Dongah Elecomm) ;
  • Kim, In-Dong (Dept. of Electrical Eng., Pukyong National University) ;
  • Nho, Eui-Cheol (Dept. of Electrical Eng., Pukyong National University) ;
  • Ryu, Myung-Hyo (Power Conversion Research Center, Korea Electrotechnology Research Institute) ;
  • Baek, Ju-Won (Power Conversion Research Center, Korea Electrotechnology Research Institute)
  • 투고 : 2013.11.07
  • 심사 : 2014.01.08
  • 발행 : 2014.06.20
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초록

This paper proposes a low voltage high current LLC resonant converter for Green PC. Green PC is composed of a lot of blade PCs, and it is a centralized system to manage them in computer center. Green PC should require that its power supplies have several characteristics such as low output voltage, high output current, and high power conversion efficiency. Conventional PSFB (Phase Shift Full Bridge) converter is usually used as DC/DC converter for computer power supply because it has high power conversion efficiency thanks to ZVS (Zero Voltage Switching) operation under middle and high load conditions. However, this converter has some problems such as large switching noise and limitation of ZVS operation under light load condition. In order to improve the performance of power supply for Green PC, a new power supply using popular high efficiency LLC resonant converter for low voltage and high current application is proposed in this paper. The proposed power supply has ZVS capability over the entire load range, thus resulting in good efficiency and high switching frequency. Experimental results verify the performance of the proposed power supply for Green PC using 2[kW] (19[V], 105[A]) rated prototype converter.

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참고문헌

  1. Kyu-Min. Cho, Young-Do. Kim, Gun-Woo. Moon, "Technology and Development Trend of High Efficiency and High Power Server Power System," Transactions of Korean Institute of Power Electronics, Vol. 15, No. 2, pp. 87-95, Apr. 2010. https://doi.org/10.6113/TKPE.2010.15.2.87
  2. Sung-Woon. Kim, "Technology and Industry Trends of Green PC System," KI-IT, Technology review, Vol. 8, No. 1, pp. 17-24, Dec. 2010.
  3. Yong-sin. Park, "Regular Supply of Green PC System," Journal of Korean electronics, Vol. 30, No. 12, pp. 11-13, 2010.
  4. Hang-Seok Choi, "Design Consideration of Half-Bridge LLC Resonant Converter," Journal of Power Electronics, Vol. 7, No. 1, pp. 13-20, Jan. 2007.
  5. B. Lu, W. Liu, Y. Liang, F.C. Lee, and J.D. van Wyk, "Optimal design methodology for LLC resonant converter," in Proc. IEEE APEC, pp. 533-538, Mar. 2006.
  6. Bo Yang. Lee, F.C, A.J Zang, Guisong Huang, "LLC resonant converter for front end DC/DC conversion," in IEEE APEC, Vol. 2, pp. 1108-1112, Mar. 2002.
  7. B. Lu, W. Liu, Y. Liang, F.C. Lee, and J.D. van Wyk, "Optimal design methodology for LLC resonant converter," Proceedings of the IEEE APEC'06, Vol. 1, pp. 533-538, 2006.
  8. Jin-heang jang. Min-jae joung, Byung-cho Choi, Heung-geun Kim, "dynamic analysis and control design of optocoupler-isolated LLC series resonant converter with wide input and load variation," Energy Conversion Congress and Exposion, IEEE, pp. 758-765, Sept. 2009.
  9. T. W. Heo, S. C. Bong, C. E. Kim, D. J. Kim, D. S. Oh, "Development of High Efficiency Power Supply for Server Application," Power Electronics Annual Conference, pp. 190-192, Jul. 2009.