University of South Wales Master of Sciences Thesis
Battery state is neither minimum nor full
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- Battery has been fully charged and load draws power from it
| Battery state is neither minimum nor full
When the battery is neither at its lowest state nor at its full state it can either charge or discharge depending on the load demand and other energy source conditions. Whenever there is more supply from other sources than the demand, it charges and when the demand exceeds the supply, it discharges. Battery has been fully charged and load draws power from it This is the case when the battery is fully charged and it is discharging when the load draws power from it. Depending on the energy sources and the load demand, the conditions that have to meet, in these cases, are: 48 The battery current and power will have positive signs according to the convention used in this paper. 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: tải về 6.62 Mb. Chia sẻ với bạn bè của bạn:
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