Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Title: BIDIRECTIONAL DC-DC CONVERTER WITH COUPLED INDUCTOR FOR DC-BUS REGULATION IN MICROGRID APPLICATIONS

Keywords: Bidirectional dc-dc converter, Coupled Inductor, Microgrid

Abstract
This paper presents a theoretical analysis and the experimental results of the bidirectional coupled inductor dc-dc converter for dc-bus voltage regulation and power compensation in dc-microgrid applications. In dc-microgrids, a power distribution system requires a bidirectional converter to control the power flow between dc-bus and batteries. Furthermore, the dc-bus needs to be kept stabilized within certain limits and the converter handles a large range of voltage variation in the accumulators. The proposed topology is also relatively feasible for low-input-voltage applications for interfacing energy storage elements, such as batteries, ultracapacitors with the high voltage dc-bus in electric vehicles. The converter allows greater voltage gain compared to classic non-isolated topologies and can better deal with the wide range of voltage variation imposed by the source/load. The operation principles, the DC voltage gain, the design of the filters, the voltage/current stresses and a comparison are discussed. The experimental results confirmed and validated the theoretical study as well as the converter performance so that the measurements performed obtained from a 600 W laboratory prototype.

[1] F. Nejabatkhah and Y. W. Li, “Overview of Power Management Strategies of Hybrid AC/DC Microgrid,” in IEEE Transactions on Power Electronics, vol. 30, no. 12, pp. 7072-7089, Dec. 2015, doi: 10.1109/TPEL.2014.2384999.

[2] A. Francés, R. Asensi, Ó. García, R. Prieto and J. Uceda, “Modeling Electronic Power Converters in Smart DC Microgrids—An Overview,” in IEEE Transactions on Smart Grid, vol. 9, no. 6, pp. 6274-6287, Nov. 2018, doi: 10.1109/TSG.2017.2707345.

[3] T. Shah and Z. A. Ansari, “An Overview of Intelligent Energy Management System for DC Microgrid: System and Communication Architecture and Application in Power Distribution System,” 2018 IEEE 13th International Conference on Industrial and Information Systems (ICIIS), Rupnagar, India, 2018, pp. 1-4, doi: 10.1109/ICIINFS.2018.8721384.

[4] D. Bourner, “Bidirectional DC-DC Converter Systems: Sustaining Power Component Design Methodology to Achieve Critical Power Conditioning,” in IEEE Power Electronics Magazine, vol. 5, no. 2, pp. 66-71, June 2018, doi: 10.1109/MPEL.2018.2821939.

[5] Y. Han, X. Xie, H. Deng and W. Ma, “Central energy management method for photovoltaic DC micro-grid system based on power tracking control,” in IET Renewable Power Generation, vol. 11, no. 8, pp. 1138-1147, 28 6 2017, doi: 10.1049/iet-rpg.2016.0351.

[6] S. Dahale, A. Das, N. M. Pindoriya and S. Rajendran, “An overview of DC-DC converter topologies and controls in DC microgrid,” 2017 7th International Conference on Power Systems (ICPS), Pune, 2017, pp. 410-415, doi: 10.1109/ICPES.2017.8387329.

[7] N. Elsayad, H. Moradisizkoohi and O. A. Mohammed, “Design and Implementation of a New Transformerless Bidirectional DC–DC Converter With Wide Conversion Ratios,” in IEEE Transactions on Industrial Electronics, vol. 66, no. 9, pp. 7067-7077, Sept. 2019, doi: 10.1109/TIE.2018.2878126.

[8] X. Shen, D. Tan, Z. Shuai and A. Luo, “Control Techniques for Bidirectional Interlinking Converters in Hybrid Microgrids: Leveraging the advantages of both ac and dc,” in IEEE Power Electronics Magazine, vol. 6, no. 3, pp. 39-47, Sept. 2019, doi: 10.1109/MPEL.2019.2925298.

[9] H. Chen, H. Kim, R. Erickson and D. Maksimović, “Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters,” in IEEE Transactions on Power Electronics, vol. 32, no. 1, pp. 98-116, Jan. 2017, doi: 10.1109/TPEL.2016.2533347.

[10] J. Cao and A. Emadi, “A New Battery/UltraCapacitor Hybrid Energy Storage System for Electric, Hybrid, and Plug-In Hybrid Electric Vehicles,” in IEEE Transactions on Power Electronics, vol. 27, no. 1, pp. 122-132, Jan. 2012, doi: 10.1109/TPEL.2011.2151206.

[11] H. Plesko, J. Biela, J. Luomi and J. W. Kolar, “Novel Concepts for Integrating the Electric Drive and Auxiliary DC–DC Converter for Hybrid Vehicles,” in IEEE Transactions on Power Electronics, vol. 23, no. 6, pp. 3025-3034, Nov. 2008, doi: 10.1109/TPEL.2008.2005384.

[12] El kattel, Menaouar and Mayer, Robson and Oliveira, Sérgio Vidal G.,”Isolated step-up/step-down three-phase dc-dc converter with high frequency” in Eletrônica de Potência – SOBRAEP, vol. 23, no. 10, pp. 1-12, Dez. 2018, doi: 10.18618/REP.2018.4.0004.

[13] M. Brunel da Rosa, M. Berrehil El Kattel, R. Mayer, M. D. Possamai and S. V. G. Oliveira, “Analysis and simulation of a novel coupled inductor bidirectional DC-DC converter,” 2017 Brazilian Power Electronics Conference (COBEP), Juiz de Fora, 2017, pp. 1-6, doi: 10.1109/COBEP.2017.8257392.

[14] Y. Du, X. Zhou, S. Bai, S. Lukic and A. Huang, “Review of non-isolated bi-directional DC-DC converters for plug-in hybrid electric vehicle charge station application at municipal parking decks,” 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Palm Springs, CA, 2010, pp. 1145-1151, doi: 10.1109/APEC.2010.5433359.

[15] O. C. Onar, J. Kobayashi and A. Khaligh, “A Fully Directional Universal Power Electronic Interface for EV, HEV, and PHEV Applications,” in IEEE Transactions on Power Electronics, vol. 28, no. 12, pp. 5489-5498, Dec. 2013, doi: 10.1109/TPEL.2012.2236106.

[16] C. -. Lin, L. -. Yang and G. W. Wu, “Study of a non-isolated bidirectional DC-DC converter,” in IET Power Electronics, vol. 6, no. 1, pp. 30-37, Jan. 2013, doi: 10.1049/iet-pel.2012.0338.

[17] R. Mayer, M. Berrehil El Kattel, M. D. Possamai, C. Bruning and S. V. Garcia Oliveira, “Analysis of a multi-phase interleaved bidirectional DC/DC power converter with coupled inductor,” 2017 Brazilian Power Electronics Conference (COBEP), Juiz de Fora, 2017, pp. 1-6, doi: 10.1109/COBEP.2017.8257228.

[18] A. Ayachit, S. U. Hasan, Y. P. Siwakoti, M. Abdul-Hak, M. K. Kazimierczuk and F. Blaabjerg, “Coupled-Inductor Bidirectional DC-DC Converter for EV Charging Applications with Wide Voltage Conversion Ratio and Low Parts Count,” 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019, pp. 1174-1179, doi: 10.1109/ECCE.2019.8912858.

[19] Z. Hosseinzadeh, N. Molavi and H. Farzanehfard, “Soft-Switching High Step-Up/Down Bidirectional DC–DC Converter,” in IEEE Transactions on Industrial Electronics, vol. 66, no. 6, pp. 4379-4386, June 2019, doi: 10.1109/TIE.2018.2863216.

[20] C. Hong, L. Yang, T. Liang and J. Chen, “Novel bidirectional DC-DC converter with high step-up/down voltage gain,” 2009 IEEE Energy Conversion Congress and Exposition, San Jose, CA, 2009, pp. 60-66, doi: 10.1109/ECCE.2009.5316477.

[21] H. Liu, L. Wang, Y. Ji and F. Li, “A Novel Reversal Coupled Inductor High-Conversion-Ratio Bidirectional DC–DC Converter,” in IEEE Transactions on Power Electronics, vol. 33, no. 6, pp. 4968-4979, June 2018, doi: 10.1109/TPEL.2017.2725358.

[22] S. M. P., M. Das and V. Agarwal, “Design and Development of a Novel High Voltage Gain, High-Efficiency Bidirectional DC–DC Converter for Storage Interface,” in IEEE Transactions on Industrial Electronics, vol. 66, no. 6, pp. 4490-4501, June 2019, doi: 10.1109/TIE.2018.2860539.

[23] H. Wu, K. Sun, L. Chen, L. Zhu and Y. Xing, “High Step-Up/Step-Down Soft-Switching Bidirectional DC–DC Converter With Coupled-Inductor and Voltage Matching Control for Energy Storage Systems,” in IEEE Transactions on Industrial Electronics, vol. 63, no. 5, pp. 2892-2903, May 2016, doi: 10.1109/TIE.2016.2517063.

[24] R. -. Duan and J. -. Lee, “High-efficiency bidirectional DC-DC converter with coupled inductor,” in IET Power Electronics, vol. 5, no. 1, pp. 115-123, January 2012, doi: 10.1049/iet-pel.2010.0401.

[25] Y. T. Yau, W. Z. Jiang and K. I. Hwu, “Bidirectional Operation of High Step-Down Converter,” in IEEE Transactions on Power Electronics, vol. 30, no. 12, pp. 6829-6844, Dec. 2015, doi: 10.1109/TPEL.2015.2392376.

[26] L. Yang and T. Liang, “Analysis and Implementation of a Novel Bidirectional DC–DC Converter,” in IEEE Transactions on Industrial Electronics, vol. 59, no. 1, pp. 422-434, Jan. 2012, doi: 10.1109/TIE.2011.2134060.

[27] Ridley, Ray}, “Flyback converter snubber design” in Switching Power Magazine, vol. 12, 2005.