A Management of power flow for DC Microgrid with Solar and Wind Energy Sources

ABSTRACT:

Today there is a rapid proliferation of DC loads into the market and DC micro grid with renewable energy sources is emerging as a possible solution to meet growing energy demand. As different energy sources like solar, wind, fuel cell, and diesel generators can be integrated into the DC grid, Management of power flow among the sources is essential. In this paper, a control strategy for Management of power flow in DC micro grid with solar and wind energy sources is presented. As the regulation of voltage profile is important in a standalone system, a dedicated converter is to be employed for maintaining the DC link voltage. DC link voltage is regulated by the battery circuit while maximum power is extracted from Solar and Wind to feed the loads connected at the DC bus. A power flow algorithm is developed to control among three sources in the DC Microgrid. The algorithm is tested for various load conditions and for fluctuations in solar and wind power in MATLAB/SIMULINK environment.

KEYWORDS:

  1. DC microgrid
  2. Power flow administration
  3. Photovoltaics
  4. Wind conversion systems

SOFTWARE: MATLAB/SIMULINK

CONCLUSION:

A Management of power flow and control algorithm for DC microgrid with solar and wind energy sources is presented. As the system involves different intermitted energy sources and load whose demand can vary, it is necessary to develop a Management of power flow and control algorithm for the DC Microgrid. To provide ceaseless power supply to the loads and balance the power flow among the different sources at any time, a Management of power flow algorithm is developed. The feasibility of the algorithm has been tested for various load conditions and for  changes in solar and wind power.

REFERENCES:

[1] F. Katiraei, M. R. Iravani, A. L. Dimeas, and N. D. Hatziargyriou, “Microgrids management: control and operation aspects of microgrids, “IEEE Power Energy Mag., vol. 6, no. 3, pp. 54-65, May/Jun. 2008.

[2] W. Jiang and B. Fahimi, “Active current sharing and source  management in fuel cell-battery hybrid power system,” IEEE Trans. Ind. Electron., vol. 57, no. 2, pp. 752–761, Jan. 2010.

[3] L. Xu and D. Chen, “Control and operation of a DC microgrid with variable generation and energy storage,” IEEE Trans. Power Del., vol. 26, no. 4, pp. 25 I 3-2522, Oct. 2011.

[4] Jin C, Wang P, Xiao J, “Implementation of hierarchical control in DC microgrids,”IEEE Transaction of Industrial Electronics, vol.61(8), pp.4032-4042,2014.

[5] L. Xiaonan, J. M. Guerrero, S. Kai, and J. C. Vasquez, “An Improved Droop Control Method for DC Microgrids Based on Low Bandwidth Communication With DC Bus Voltage Restoration and Enhanced Current Sharing Accuracy,” Power Electronics, IEEE Transactionson,vol.29,pp.1800-1812,2014.

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