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http://dx.doi.org/10.5370/KIEE.2015.64.4.616

Fuzzy Droop Control considering SOC Balancing of BESSs  

Han, Seong-Geun (Dept. of Electrical Engineering, Incheon National Univ.)
Yoo, Hyeong-Jun (Dept. of Electrical Engineering, Incheon National Univ.)
Kim, Hak-Man (Dept. of Electrical Engineering, Incheon National Univ.)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.64, no.4, 2015 , pp. 616-622 More about this Journal
Abstract
A microgrid which is composed of distributed generation systems, energy storage systems and loads is operated in the grid-connected mode and in the islanded mode. Especially, in the islanded mode, a microgrid should maintain frequency in the allowed range. The frequency is decided by a balance between power supply and power demand. In general, the frequency is controlled by using battery energy storage systems (BESSs) in the microgrid. Especially, droop control is applied to controlling BESSs in the microgrid. Meanwhile, over-charging and deep-discharging of BESS in operation and control cause life-shortening of batteries. In this paper, a fuzzy droop control is proposed to change droop gains adaptively by considering state of charge (SOC) of BESSs to improve the life cycle of the battery. The proposed fuzzy droop control adjusts droop gains based on SOC of BESSs in real time. In other to show the performance of the proposed fuzzy droop control, simulation based on Matlab/Simulink is performed. In addition, comparison of the convention droop control and the proposed fuzzy droop control is also performed.
Keywords
Microgrid; Battery energy storage system (BESS); Droop control; Fuzzy control;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 L. Maharjan, S. Inoue, H. Akagi, and J. Asakura, “SOC(state-of-charge) Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter,” IEEE Trans. on Power Electronics, Vol. 24, No. 6, pp. 1628-1636, 2009.   DOI   ScienceOn
2 X. Lu, J. M. Guerrero, J.C. Vasquez, and L. Huang, “State-of-Charge Balance Using Adaptive Droop Control for Distributed Energy Storage Systems in DC Microgrid Applications,” IEEE Trans. on Industrial Electronics, Vol. 61, No. 6, pp. 2804-2815, 2014.   DOI   ScienceOn
3 J. Kim, J. Shin, C. Chun, and B. H. Cho, “Stable Configuration of a Li-ion Series Battery Pack Based on a Screening Process for Improved Voltage/SOC Balancing,” IEEE Trans. on Power Electronics, Vol. 27, No. 1, pp. 411-424, 2012.   DOI
4 S. Chakraborty, M.D. Weiss, and M.G. Simoes, “Distributed Intelligent Energy Management System for a Single-Phase High-Frequency AC Microgrid”, IEEE Trans. on Ind. Electron., Vol. 54, No. 1, pp. 97-109, 2007.   DOI   ScienceOn
5 O. Tremblay, L.-A. Dessaint, and A.-I. Dekkiche, "A Generic Battery Model for the Dynamic Simulation of Hybrid Electric Vehicles," In Proc. of Vehicle Power and Propulsion Conference, pp. 284-289, 2007.
6 A. Yazdani and R. Iravani, Voltage-Sourced Converters in Power System, John Wiley and Sons, 2010.
7 J.-H. Lee and W.-J. Choi, “Novel State-of-Charge Estimation Method for Lithium Polymer Batteries Using Electrochemical Impedance Spectroscopy,” Journal of Power Electronics, Vol. 11, No. 2, pp. 237-243, 2011.   DOI   ScienceOn
8 J.M. Guerrero, L. Hang, and J. Uceda, “Control of Distributed Uninterruptible Power Supply Systems,” IEEE Trans. Ind. Electronics, Vol. 55, No. 8, pp. 2845-2859, 2008.   DOI   ScienceOn
9 W. Du, Z. Chen, H. F. Wang, and R. Dunn, “Energy Storage Systems Applied in Power System Stability Control,” In Proc. of Universities Power Engineering Conference, pp. 455-458, 2007.
10 H. Zhou, T. Bhattacharya, D. Tran, T. S. T. Siew, and A.M. Khambadkone, “Composite Energy Storage System Involving Battery and Ultracapacitor with Dynamic Energy Management in Microgrid Application,” IEEE Trans on Power Electronics, Vol. 26, No. 3, pp. 923-930, 2011.   DOI   ScienceOn
11 W.-K. Chae, H.-J. Lee, J.-S. Park, J.-T. Cho, and D.-J. Won, “Frequency Control Method of Grid Interconnected Microgrid Operating in Stand Alone Mode,” KIEE Trans. on Electrical Engineers, Vol. 61, No. 8, pp. 1099-1106, 2012.   DOI   ScienceOn
12 J. Holtz, W. Lotzkat, and K.H. Werner, “A High-power Multitransistorinverter Uninterruptible Power Supply System,” IEEE Trans. on Power Electronics, Vol. 3, No. 3, pp. 278-285, 1988.   DOI   ScienceOn
13 J.M. Guerrero, L. Hang, and J. Uceda, “Control of Distributed Uninterruptible Power Supply Systems,” IEEE Trans. Ind. Electronics, Vol. 55, No. 8, pp. 2845-2859, 2008.   DOI   ScienceOn
14 J.W. Kim, H.S. Choi, and B.H. Cho, "A Novel Droop Method for Converter Parallel Operation," IEEE Trans. on Power Electronics, Vol. 22, No. 1, pp. 25-32, 2002.
15 K.D. Brabandere, B. Bolsens, J.V. Keybus, A. Woyte, J. Driesen, and R.A. Belmans, “Voltage and Frequency Droop Control Method for Parallel Inverters,” IEEE Trans. on Power Electronics, Vol. 22, No. 4, pp. 1107-1115, 2007.   DOI   ScienceOn
16 C.K. Sao and P.W. Lehn, “Control and Power Management of Converter Fed Microgrids,” IEEE Trans. on Power Systems, Vol. 23, No. 3, pp. 1088-1098, 2008.   DOI
17 N.D. Hatziargyriou, H. Asano, H.R. Iravani, and C. Marnay, "Microgrid," IEEE Trans. on Power Energy, Vol. 5, pp. 78-94, 2007.