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

The Korean Institute of Power Electronics (전력전자학회)
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A Control Method to Improve Power Conversion Efficiency of Three-level NPC-Based Dual Active Bridge Converter

Three-Level NPC-Based Dual Active Bridge Converter의 도통손실 절감을 위한 새로운 스위칭 방법

  • Received : 2016.09.30
  • Accepted : 2016.12.06
  • Published : 2017.04.20
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Abstract

This study proposes a new pulse-width modulation switching pattern for the low conduction loss of a three-level neutral point clamped (NPC)-based dual-active bridge (DAB) converter. The operational principle for a bidirectional power conversion is a phase-shift modulation. The conventional switching method of the three-level NPC-based DAB converter shows a symmetric switching pattern. This method has a disadvantage of high root-mean-square (RMS) value of the coupling inductor current, which leads to high conduction loss. The proposed switching method shows an asymmetrical pattern, which can reduce the RMS value of the inductor current with lower conduction loss than that of the conventional method. The performance of the proposed asymmetrical switching method is theoretically analyzed and practically verified using simulation and experiment.

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References

  1. H. R. Karshenas, H. Daneshpajooh, A. Safaee, A. Bakhshai, and P. Jain, "Basic families of medium-power soft-switched isolated bidirectional dc-dc converters," in Proc. Power Electronics, Drive Systems and Technologies Conference, pp. 92-97, 2011.
  2. R. W. De Doncker, D. M. Divan, and M. H. Kheraluwala, "A three phase soft-switched high-power density dc/dc converter for high-power applications," IEEE Trans. Ind. Appl., Vol. 27, No. 1, pp. 63-73, Jan/Feb. 1991. https://doi.org/10.1109/28.67533
  3. E. Babaei and S. H. Hosseini, "New cascaded multilevel inverter topology with minimum number of switches," Energy Convers. Manag., Vol. 50, No. 11, pp. 2761-2767, Nov. 2009. https://doi.org/10.1016/j.enconman.2009.06.032
  4. M. Schweizer and J. W. Kolar, "Design and implementation of a highly efficient three-level T-type converter for low-voltage applications," IEEE Trans. Power Electron., Vol. 28, No. 2, pp. 899-907, Feb. 2012. https://doi.org/10.1109/TPEL.2012.2203151
  5. S. Kouro, M. Malinowski, K. Gopakumar, J. Pou, L. Franquelo, B. Wu, J. Rodriguez, M. Pe andrez, and J. Leon, "Recent advances and industrial applications of multilevel converters," IEEE Trans. Ind. Electron., Vol. 57, No. 8, pp. 2553-2580, Aug. 2010. https://doi.org/10.1109/TIE.2010.2049719
  6. P. Panagis, F. Stergiopoulos, P. Marabeas, and S. Manias, "Comparison of state of the art multilevel inverters," in Proc. IEEE Power Electron. Specialists Conf, pp. 4296-4301, Jun. 15-19, 2008.
  7. M. A. Moonem and H. Krishnaswami, "Analysis and control of multi-level dual active bridge DC-DC converter," in Proc. ECCE, pp. 1556-1561, 2012.