Low-load Efficiency Improvement of a Three-Phase Bidirectional Isolated DC-DC Converter (3P-BIDC) Via Enhanced Switching Strategy

  • Abstract
  • Keywords
  • References
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  • Abstract

    This paper presents the system design, operation and enhanced switching strategy of a three-phase bidirectional isolated dc-dc converter (3P-BIDC). The paper discusses the operating modes of the 3P-BIDC using phase-shift modulation (PSM), with analysis on its soft-switching characteristics. The phase-shift modulation is the simplest modulation technique that can be applied to the 3P-BIDC. However, it comes with the consequences of low efficiency performance in the low-load conditions. Therefore, this paper investigates the improvement in efficiency of the 3P-BIDC during low-load condition using an enhanced switching strategy combining burst-mode switching and phase-shift modulation. The model of a 700-V, 100-kW, 20-kHz 3P-BIDC and the enhanced switching strategy are verified via simulation using PSCAD. The simulation results shows that the combination of burst-mode and phase-shift modulation technique improves the efficiency of the 3P-BIDC at low-load conditions.



  • Keywords

    bidirectional isolated dc-dc converter; burst-mode switching; phase-shift modulation; ZVS; switching losses

  • References

      [1] H. Van Hoek, M. Neubert, and R. W. De Doncker, “Enhanced modulation strategy for a three-phase dual active bridge - Boosting efficiency of an electric vehicle converter,” IEEE Trans. Power Electron., vol. 28, no. 12, pp. 5499–5507, 2013.

      [2] N. M. L. Tan, T. Abe, and H. Akagi, “Design and performance of a bidirectional isolated DC-DC converter for a battery energy storage system,” IEEE Trans. Power Electron., vol. 27, no. 3, pp. 1237–1248, 2012.

      [3] X. She, X. Yu, F. Wang, and A. Q. Huang, “Design and demonstration of a 3.6-kV-120-V/10-kVA solid-state transformer for smart grid application,” IEEE Trans. Power Electron., vol. 29, no. 8, pp. 3982–3996, 2014.

      [4] J. R. Rodriguez-Rodrıguez, E. L. Moreno-Goytia, V. Venegas-Rebollar, L. E. Ugalde-Caballero, and G. A. Anaya-Ruiz, “The Proportional-Values Modulation (PVM), a technique for improving efficiency and power density of bidirectional DAB converters,” Electr. Power Syst. Res., vol. 144, pp. 280–289, Mar. 2017.

      [5] H. Bai and C. Mi, “Eliminate reactive power and increase system efficiency of isolated bidirectional dual-active-bridge dc-dc converters using novel dual-phase-shift control,” IEEE Trans. Power Electron., vol. 23, no. 6, pp. 2905–2914, 2008.

      [6] R. A. Abramson, S. J. Gunter, D. M. Otten, K. K. Afridi, and D. J. Perreault, “Design and evaluation of a reconfigurable stacked active bridge dc/dc converter for efficient wide load-range operation,” Conf. Proc. - IEEE Appl. Power Electron. Conf. Expo. - APEC, no. 1307699, pp. 3391–3401, 2017.

      [7] G.-J. Su and L. T. L. Tang, “A Three-Phase Bidirectional DC-DC Converter for Automotive Applications,” 2008 IEEE Ind. Appl. Soc. Annu. Meet., pp. 1–7, 2008.

      [8] E. De Din, H. A. B. Siddique, M. Cupelli, A. Monti, and R. W. De Doncker, “Voltage Control of Parallel-Connected Dual-Active Bridge Converters for Shipboard Applications,” IEEE J. Emerg. Sel. Top. Power Electron., vol. 6, no. 2, pp. 664–673, 2018.

      [9] H. Choi, J. Lee, Y. P. Cho, and J. H. Jung, “Design consideration of efficinecy improvement in three phase dual active bridge converter for LVDC application,” INTELEC, Int. Telecommun. Energy Conf., vol. 2017–Octob, pp. 549–555, 2017.

      [10] N. H. Baars et al., “A 80-kW Isolated DC – DC Converter for Railway Applications,” vol. 30, no. 12, pp. 6639–6647, 2015.

      [11] R. W. A. A. 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, 1991.

      [12] Z. Xuan, H. Shenghua, and N. Guoyun, “A Three-phase Dual Active Bridge Bidirectional ZVS DC/DC Converter,” Phys. Procedia, vol. 24, pp. 139–148, 2012.

      [13] Z. Li, Y. Wang, L. Shi, J. Huang, and W. Lei, “Optimized modulation strategy for three-phase dual-active-bridge DC-DC converters to minimize RMS inductor current in the whole load range,” 2016 IEEE 8th Int. Power Electron. Motion Control Conf. IPEMC-ECCE Asia 2016, pp. 2787–2791, 2016.

      [14] H. Zhou and A. M. Khambadkone, “Hybrid modulation for dual-active-bridge bidirectional converter with extended power range for ultracapacitor application,” IEEE Trans. Ind. Appl., vol. 45, no. 4, pp. 1434–1442, 2009.

      [15] Y. M. Hirofumi Hisamochi, Hirofumi Akagi, Shin-ichi Kinouchi, “Enhancement of Power Conversion Efficiency in a Low-Power Range of a Bidirectional Isolated DC-DC Converter by Intermittent Operation,” IEEJ Trans. Ind. Appl., vol. 136, pp. 501-508, 2016.

      [16] G. G. Oggier and M. Ordonez, “High-efficiency DAB converter using switching sequences and burst mode,” IEEE Trans. Power Electron., vol. 31, no. 3, pp. 2069–2082, 2016.

      [17] F. Reverter and M. Gasulla, “Optimal Inductor Current in Boost DC/DC Converters Operating in Burst Mode Under Light-Load Conditions,” IEEE Trans. Power Electron., vol. 31, no. 1, pp. 15–20, 2016.

      [18] Z. Chen, W. Xinke, and Q. Zhaoming, “Design and comparison of two front-end Dc/Dc converters: LLC resonant converter and soft-switched phase-shifted full-bridge converter with primary-side energy storage inductor,” Conf. Proc. - IEEE Appl. Power Electron. Conf. Expo. - APEC, pp. 1073–1077, 2009.

      [19] Y. Cui, D. Wang, and A. Emadi, “Three-Phase Dual Active Bridge Converter Design Considerations,” pp. 4696–4701, 2017.

      [20] R. O. Núñez, G. G. Oggier, F. Botterón, and G. O. García, “A comparative study of Three–Phase Dual Active Bridge Converters for renewable energy applications,” Sustain. Energy Technol. Assessments, vol. 23, pp. 1–10, 2017.

      [21] Z. Y. Tan, N. M. L. Tan, and I. S. Hussain, “Theoretical Analysis of a Three-Phase Bidirectional Isolated DC-DC Converter Using Phase-Shifted Modulation,” Int. J. Power Electron. Drive Syst., vol. 9, no. 2, pp. 495–503, 2018.




Article ID: 28297
DOI: 10.14419/ijet.v7i4.35.28297

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