Journal of Power Electronics

  • 제14권1호
  • /
  • Pages.22-29
  • /
  • 2014
  • /
  • 1598-2092(pISSN)
  • /
  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지
DOI QR코드

DOI QR Code

Improved Droop Method for Converter Parallel Operation in Large-Screen LCD TV Applications

  • Kim, Jung-Won (Engineering Research Institute, Seoul National University) ;
  • Jang, Paul (Department of Electrical and Computer Engineering, Seoul National University)
  • 투고 : 2013.09.06
  • 발행 : 2014.01.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Current sharing between modules in a converter parallel operation is very important for the reliability of the system. This paper proposes an improved droop method that can effectively improve current sharing accuracy. The proposed method adaptively adjusts the output voltage set-point of each module according to the current set-points. Unlike conventional droop control, modules share a signal line to communicate with each other. Nevertheless, since signals are simple and in digital form, the complexity of the circuitry is much less and noise immunity is much better than those of conventional methods utilizing communication. The operation principle and design procedure of the proposed method are described in detail. Results of the experiment on two boost converters operating in parallel under the specification of a TFT LCD TV panel power supply verify the validity of the proposed scheme.

키워드

참고문헌

  1. S. Luo, Z. Ye, R.-L. Lin, and F. C. Lee, "A classification and evaluation of paralleling methods for power supply modules," in Proc. IEEE PESC, Vol. 2, pp. 901-908, Jun. 1999.
  2. S. K. Mazumder, and M. Tahir, and K. Acharya, "Master-slave current-sharing control of a parallel DC-DC converter system over an RF communication interface," IEEE Trans. Ind. Electron., Vol. 55, No. 1, pp. 59-66, Jan. 2008. https://doi.org/10.1109/TIE.2007.896138
  3. Y. M. Lai, S.-C. Tan, and Y. M. Tsang, "Wireless control of load current sharing information for parallel-connected DC/DC power converters," IET Power Electron., Vol. 2, No. 1, pp. 14-21, Jan. 2009.
  4. J.-J. Shieh, "Peak-current-mode based single-wire current-share multimodule paralleling DC power supplies," IEEE Trans. Circuits Syst. I: Fundam. Theory Appl., Vol. 50, No. 12, pp. 1564-1568, Dec. 2003. https://doi.org/10.1109/TCSI.2003.819829
  5. M. Lopez, L. G. de-Vicuna, M. Castilla, P. Gaya, and O. Lopez, "Current distribution control design for paralleled DC-DC converter using sliding-mode control," IEEE Trans. Ind. Electron., Vol. 51, No. 2, pp. 419-428, Apr. 2004. https://doi.org/10.1109/TIE.2004.825273
  6. J. A. Abu Qahouq, L. Huang, and D. Huard, "Sensorless current sharing analysis and scheme for multiphase converters," IEEE Trans. Power Electron., Vol. 23, No. 5, pp. 2237-2247, Sep. 2008. https://doi.org/10.1109/TPEL.2008.2001897
  7. Y. Kanthaphayao, U. Kamnarn, and V. Chunkag, "Redundant operation of a parallel AC to DC converter via a serial communication bus," Journal of Power Electronics, Vol.11, No. 4, pp. 533-541, Jul. 2011. https://doi.org/10.6113/JPE.2011.11.4.533
  8. B. T. Irving and M. M. Jovanovic, "Analysis, design, and performance evaluation of droop current-sharing method," in Proc. IEEE APEC, Vol. 1, pp. 235-241, Feb. 2000.
  9. J.-W. Kim, H.-S. Choi, and B. H. Cho, "A novel droop method for converter parallel operation," IEEE Trans. Power Electron., Vol. 17, No. 1, pp. 25-32, Jan. 2002. https://doi.org/10.1109/63.988666
  10. A. D. Erdogan and M. T. Aydemir, "Application of adaptive droop method of boost converters operating at the output of fuel cells," in Proc. IEEE ELECO'09, pp. I-321-I-325, Nov. 2009.
  11. H.-H. Ho, K.-H. Chen, and W.-T. Chen, "Dynamic droop scaling for improving current sharing performance in a system with multiple supplies," in Proc. IEEE ISCAS, pp. 545-548, May 2007.
  12. T.-J. Tai and K.-H. Chen, "Switching loss calculation (SLC) and positive/negative slope compensation dynamic droop scaling (PNC-DDS) technique for high-efficiency multiple input single output (MISO) systems," IEEE Trans. Power Electron., Vol. 24, No. 5, pp. 1386-1398, May 2009. https://doi.org/10.1109/TPEL.2009.2016099
  13. S. Anand and B. G. Fernandes, "Modified droop controller for paralleling of DC-DC converters in standalone DC system," IET Power Electron., Vol. 5, No. 6, pp. 782-789, Jul. 2012. https://doi.org/10.1049/iet-pel.2011.0346

피인용 문헌

  1. Pulse-driven LED circuit with transformer-based current balance technique vol.101, pp.12, 2014, https://doi.org/10.1080/00207217.2014.888780
  2. Modified Droop Method Based on Master Current Control for Parallel-Connected DC-DC Boost Converters vol.2018, pp.2090-0155, 2018, https://doi.org/10.1155/2018/9819787