Browse > Article
http://dx.doi.org/10.6113/TKPE.2018.23.5.366

Decoupled Power Control of Three-port Dual Active Bridge DC-DC Converter for DC Microgrid Systems  

Sim, Ju-Young (School of Electrical & Computer Engineering, UNIST)
Lee, Jun-Young (School of Electrical & Computer Engineering, UNIST)
Choi, Hyun-Jun (School of Electrical & Computer Engineering, UNIST)
Kim, Hak-Sun (School of Electrical & Computer Engineering, UNIST)
Jung, Jee-Hoon (School of Electrical & Computer Engineering, UNIST)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.23, no.5, 2018 , pp. 366-372 More about this Journal
Abstract
Three-port dual-active bridge (DAB) converter in a DC microgrid was studied due to its high power density and cost-effectiveness. The other advantages of DAB include galvanic isolation and bidirectional power conversion capability using simple control modulation. The three-port DAB converter consists of a three winding transformer and three bridges. The transformer has three phases, which means that the ports are coupled. Thus, the three-port DAB converter causes unwanted power flows when the load connected to each port changes. The basic operational principles of the three-port DAB converter are presented in this study. The decoupling control strategy of the independent port power transfer is presented with a mathematical power model to overcome the unexpected power flow problem. The validity of the proposed analysis and control strategy is verified with PSIM simulation and experiments using a 1-kW prototype power converter.
Keywords
Bidirectional DC-DC converter; DC microgrid; Decoupling power control; Three-port DC-DC converter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. Y. Lee, H. J. Choi, J. Y. Kim, and J. H. Jung, "A control method to improve power conversion efficiency of three-level NPC-based dual active bridge converter," The Trans actions of the Korean Institute of Power Electronics, Vol. 22, No. 2, Apr. 2017.
2 S. Bal, A. K. Rathore, and D. Srinivasan "Naturally clamped snubberless soft-switching bidirectional current-fed three-phase push-pull DC-DC converter for DC microgrid application," IEEE Transactions on Industrial Applications, Vol. 52, Mar./Apr. 2016.
3 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 Transactions on Industrial Applications, Vol. 27, No. 1, pp. 63-73, Jan./Feb. 1991.   DOI
4 P. Wang, W. Wang, and D. Xu, "A hardware decoupling method for series-resonance-based isolated three-port DC/DC converters," in 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), Apr. 2018.
5 C. Zhao, S. D. Round, and J. W. Kolar, “An isolated three-port bidirectional DC-DC converter with decoupled power flow management,” IEEE Trans. Power Electron., Vol. 23, No. 5, pp. 2443-2453, Sep. 2008.   DOI
6 A. G. Ganz, "A simple, exact equivalent circuit for the three-winding transformer," IRE Transactions on Component Parts, Vol. 9, Dec. 1962.
7 A. Alonso, J. Sebastian, D. Lamar, M. Hemando, and A. Vazquez, "An overall study of a dual active bridge for bidirectional DC-DC conversion," in Energy Conversion Congress and Exposition (ECCE-Georgia 2010), Georgia (USA), Sep. 2010.
8 H. J. Choi and J. H. Jung, “Practical design of dual active bridge converter as isolated bi-directional power interface for solid state transformer applications,” J. Electr. Eng. Tech., Vol. 11, No. 5, pp. 1266-1273, Sep. 2016.
9 Y. Arkun, B. Manouslouthakis, and A. Palazoglu, “Robus tness analysis of process control systems. A case study of decoupling control in distillation,” IEC Process Des Dev, Vol. 23, No. 1, pp. 93-101, Jan. 1984.   DOI