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.

1. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
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

2. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
BLOCK DIAGRAM:
Fig. 1 Block diagram of the DC microgrid with Solar and wind energy sources

3. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
EXPERIMENTAL RESULTS:
Fig 2 . Response of the system for increase in load
power

4. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
Fig 3. Response of the system for decrease in load power

5. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
Fig .4. Response of the system during change in Ppv

6. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
Fig .5. Response of the system during change in Pw

7. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
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.