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
Fig.
1 Block diagram of the DC microgrid with Solar and wind energy sources
Fig 2
. Response of the system for increase in load
power
Fig 3.
Response of the system for decrease in load power
Fig
.4. Response of the system during change in Ppv
Fig .5. Response of the system during change
in Pw
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.
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