Abstract
In this paper some photovoltaic, PV, conversion chains architectures for on-grid applications have been proposed and the advantage of the direct use of a Low Voltage Direct Current (LVDC) bus for the DC loads has been shown. The evaluation of the efficiency of the proposed chains compared to the classical one was performed. It is shown that LVDC use instead of standard AC plugs, in numerous applications, is promising in future. The registered annual saved energy can exceed 25% of the PV generated energy. This important rate, the need of better services at lower economic cost and environmental burden will incite to make reflection about industry and supplies’ future standards.
Highlights
Nowadays, world uses a high amount of energy
The main object of this paper is to show the importance of the saved energy values when Low Voltage Direct Current (LVDC) are used
We have proposed practical PV conversion chains which provide a direct use of the DC current for DC loads applications
Summary
World uses a high amount of energy. electricity is becoming an essential part of the society, perhaps because electricity may be seen as a green energy. In housing and office applications, the use of the electric energy is achieved from the alternative current plugs even if PV panel systems are locally connected to the power grid. This process can considerably increase system losses especially when DC electricity is used at the load levels. The different converters modeling are performed using non ideal averaged modeling techniques based on the switching cell configuration [6] [7] This technique was considered to be efficient especially for semiconductor losses estimation as it is proved by refined simulations and experiments [7]. It is noticeable that the importance of the performed studies is even more interesting when the main consumed power is achieved during daytime
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