Journal of Electrical and Electronic Engineering
Volume 4, Issue 5, October 2016, Pages: 131-138
Received: Nov. 22, 2016;
Published: Nov. 24, 2016
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Xiong Xiaoling, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Beijing, China
The photovoltaic-battery hybrid power system is constructed with photovoltaic panels and a battery, which are connected to the load via a boost converter and a bidirectional buck/boost converter, respectively. Depending on the amount of available solar power, the photovoltaic panels may operate in a maximum power point tracking (MPPT) mode or off-MPPT mode to regulate the output voltage, and at the same time, the battery may provide power to the load or store energy from the solar power. The whole system is thus designed to operate with multiple operating modes. Compared to the system of single operating mode, the stability analysis and closed-loop design is much more difficult, as the control loops are usually coupled with each other and the design for stable operation of such system requires consideration of the stability conditions for all possible operating modes. To design the closed-loop, the commonly used small-signal analysis method based on averaged state-space is helpless here, and then the nonlinear analysis method with discrete-time mapping model is performed to evaluate the stability boundaries of the system. The parameters of the closed-loop are chosen in the stable region of the stability boundary diagrams. Moreover, a prototype is built and the experimental results are shown to verify the nonlinear analysis method in the design of closed-loop.
Closed-Loop Design for Standalone Photovoltaic-Battery Hybrid Power System, Journal of Electrical and Electronic Engineering.
Vol. 4, No. 5,
2016, pp. 131-138.
M. H. Nehrir, C. Wang, K. Strunz, H. Aki, R. Ramakumar, J. Bing, Z. Miao, and Z. Salameh, “A review of hybrid renewable/alternative energy systems for electric power generation: configurations, control, and applications,” IEEE Trans. Sustain. Energy,vol. 2, no. 4, pp. 392–403, Oct. 2011.
Giraud F, Salameh Z M, “Steady-state performance of a grid-connected rooftop hybrid wind- photovoltaic power system with battery storage,” IEEE Trans on Energy Conversion, 2001, 16(1): 1–7.
Rahman S, Tam K, “Feasibility study of photovoltaic-fuel cell hybrid energy system,” IEEE Trans on Energy Conversion, 1998, 3(1): 50–55.
Nehrir M H, Wang C, Strunz, Aki H, Ramakumar R, Bing J, Miao Z, Salameh Z, “A review of hybrid renewable/alternative energy systems for electric power generation: Configurations, control, and applications,” IEEE Trans on Sustainable Energy, 2011, 2(4): 392–403.
She X, Huang A Q, Lukic S, et al, “On integration of solid-state transformer with zonal DC microgrid,” IEEE Trans. on Smart Grid，2012, 3(2): 975-985.
Kakigano H, MiuraY, Ise T, “Low-voltage bipolar-type DC microgrid for super high quality distribution,” IEEE Trans. on Power Electronics, 2010, 25(12): 3066-3075.
Zhang J, Ji L, “An effective hybrid energy storage system based on battery-EDLC for distributed generation systems,” Proc. of IEEE Conference of Industrial Electronics Application, 2010: 819–824.
J. Xiao and P. Wang, “Multiple modes control of household DC microgrid with integration of various renewable energy sources,” in IEEE Ind. Electron. Conf. Record, 2013, pp. 1773–1778.
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, Sept. 2008.
Li Y, Ruan X, Yang D, Liu F, “Modeling, analysis and design for hybrid power systems with dual-input dc-dc converter,” Proc. IEEE Energy Conversion Congress and Exposition (ECCE), 2009: 3203–3210.
X. Zhang, X. Ruan, and C. K. Tse, “Impedance-based local stability criterion for DC distributed power systems,” IEEE Trans. Circ. Syst. I:Reg. Papers, vol. 62, no. 3, pp. 916–925, March 2015.
C. Wan, M. Huang, C. K. Tse and X. Ruan, “Effects of interaction of power converters coupled via power grid: a design-oriented study,” IEEE Trans. Power Electron., vol. 30, no. 7, pp. 3589–3600, July 2015.
X. Sun, Y. Shen, W. Li and H. Wu, “A PWM and PFM hybrid modulated three-port converter for a standalone PV/Battery power system,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 4, pp. 984–1000, December 2015.
Liu D W, Li H, Marlino L D, “Design of a 6 kW multiple-input bi-directional dc/dc converter with decoupled current sharing control for hybrid energy storage elements,”Proc. IEEE Applied Power Electronics Conference and Exposition (APEC),2007: 509-513.
X. Xiong, C. K. Tse, and X. Ruan, “Bifurcation analysis of standalonephotovoltaic-battery hybrid power system,” IEEE Trans. Circ. Syst. I:Reg. Papers, vol. 60, no. 5, pp. 1354–1365, May 2013.
C. K. Tse, Complex Behavior of Switching Power Converters. BocaRaton: CRC Press, 2003.
T. Esram and P. L Chapman, “Comparison of photovoltaic array maximumpower point tracking techniques,” IEEE Trans. Energy Conv., vol. 22, no. 2, pp. 439–449, June, 2007.