An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid


As there exists sorts of distributed generators in microgrid, an integrated control strategy containing different control methods against corresponding generators should be applied. The strategy in this paper involves PQ control and droop control methods. The former aims at letting generators like PV output maximum power. The latter stems from inverter parallel technique and applies to controlling generators which can keep the network voltage steady to make the parallel system reach the minimum circulation point. Due to the unworthiness of droop control applied in low-voltage microgrid of which the impedance ratio is rather high, the paper adopts the droop control introducing virtual generator and virtual impedance. Based on theoretical analysis, simulation in Matlab is also implemented to verify the feasibility of the strategy.

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J. Su, J. Zheng, D. Cui, X. Li, Z. Hu and C. Zhang, "An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid," Engineering, Vol. 5 No. 1B, 2013, pp. 44-49. doi: 10.4236/eng.2013.51B008.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] J. Huang, C. Jiang, R. Xu. “A review on distributed energy resources and microgrid”, Renewable and Sus-tainable Energy Reviews, Vol. 12, No. 9, 2008 2465-2476.
[2] W. Saad, Z. Han, H. V. Poor, T. Basar. “Game-theoretic methods for the smart grid: an overview of microgrid systems, demand-side management, and smart grid communications”. IEEE Signal Processing Magazine, Vol. 29, No. 5, 2012, pp. 86-105.
[3] E. Serban, H. Serban. “A control strategy for a distributed power generation microgrid application with voltage-and-current-controlled source converter”. IEEE Transactions on Power Electronics, Vol. 25, No. 12, 2010, pp. 2981-2992.
[4] W. Yang. “Simulation and research of grid connected photovoltaic generation and microgrid operation control”. Sichuan: Southwest Jiaotong University, 2007.
[5] J. Cheng, S. Li, J. Chen, Z. Wu. “An analysis of decoupling mechanism of droop control using virtual reactance in microgrid”. Automa-tion of Electric Power System, Vol. 36, No, 7, 2012, pp. 27-32.
[6] C. Wang, Z. Xiao, et al. “Intergrated control and analysis of microgrid”. Automation of Electric Pow-er System, Vol. 32, No. 7, 2008, pp. 98-102.
[7] Z. Lu,A. Luo,F. Rong,L. Guo. “Microgrid PQ control strategy analysis under utility voltage imbalance”. Power Electronics, Vol. 44, No. 6, 2010, pp. 71-74.
[8] IEEE 1547-2003 Standard for interconnecting distributed resources with electric power systems. 2003.
[9] Y. Li,C. Kao. “An accurate power control strategy for power-electronics-interfaced distributed generation units operating in a low-voltage multibus microgrid”. IEEE Transactions on Power Electronics, Vol. 24, No. 12, 2009, pp. 2977-2988.
[10] J. Kim, J. M. Guerrero, P. Rodriguez, R. Teodorescu, K. Nam. “Mode adaptive droop control with virtual output impedances for an inverter-based flexible AC microgrid”. IEEE Transactions on Power Electronics, Vol. 26, No.3, 2011, pp. 689-701.
[11] X. Zhou,F. Rong,Z. Lv,S. Peng. “V/f droop-control method with virtual power adopting coordinate rotation in low voltage microgrid”. Automation of Electric Power Systems, Vol. 36, No. 7, 2012, pp. 27-31.

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