Standalone hybrid generation system for the remote area of Thar, Pakistan
Battery has been discharged to its minimum energy and it is charging
When the battery has been discharged to its minimum state, and there is
more supply than there is
demand, the battery charges. The condition, which must be fulfilled during this situation, is:
49
The current flow and the power have negative sign according to the convention used in this paper.
2.7. Design Topologies literature Review.
A well-defined framework of a hybrid system is vital, as various energy sources may have different
operating characteristics. In an optimal framework, the renewable energy sources, energy storage, and
loads are integrated and capable of operating autonomously as a unit. A robust system should also
have a “plug-and-play” capability, which renders the system capable of
integrating any number of
devices without system re-configuration [28], [29].
In this thesis, a hybrid system of solar-wind-Genset with battery bank is considered. Here, we have
different power generating units. Some of them generate AC and others DC power directly. These
generation systems have to be connected at some point and somewhere before the loads are supplied.
In this chapter, an intensive literature study is conducted to know the different connecting topologies
and best system layout is chosen.
There are various ways to integrate different energy sources and storage
to form a hybrid power
system. Among them, dc-coupled, ac-coupled and hybrid-coupled are the most popular options [70]-
[74], which outlined as below:
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