As the conventional energy resources are depleting there is an urgent need for switching to renewable energy resources as well as increasing its functionality. This paper proposes a design of solar power system fed by a photovoltaic source with a super capacitor storage system and sepic convertor. The super capacitor has the fastest charging time compared to all other storage devices and also guarantees a longer lifetime in terms of charge cycles and has a large range of operating temperatures, but has the drawback of having low energy density . The lithium battery has higher energy density but requires an accurate charge profile to increase its lifetime. Combining the two storages is possible to obtain good compromise in terms of energy density. Sepic convertors allow output from convertors to be higher or lower than its input and allow the output to be non-inverted state with respect to input. It also reduces the amount of harmonics present in the output. A Controller is added between the solar panel and the battery to improve the system performance. The solar power system is controlled and monitored using PIC microcontroller.
ABSTRACT:
As the conventional energy resources are depleting there is an urgent need for switching to renewable energy resources as well as increasing its functionality. This paper proposes a design of solar power system fed by a photovoltaic source with a super capacitor storage system and sepic convertor. The super capacitor has the fastest charging time compared to all other storage devices and also guarantees a longer lifetime in terms of charge cycles and has a large range of operating temperatures, but has the drawback of having low energy density . The lithium battery has higher energy density but requires an accurate charge profile to increase its lifetime. Combining the two storages is possible to obtain good compromise in terms of energy density. Sepic convertors allow output from convertors to be higher or lower than its input and allow the output to be non-inverted state with respect to input. It also reduces the amount of harmonics present in the output. A Controller is added between the solar panel and the battery to improve the system performance. The solar power system is controlled and monitored using PIC microcontroller.
EXISTING SYSTEM:
In developing countries, the demand for power is growing beyond the planner’s estimation, and the power grid is weak, and scheduled power outages throughout the year are common. The size of the battery can be reduced. when a battercharger/discharger circuit is inserted between the dc bus and the battery. Utilizing the battery charger/discharger circuit for regulating dc link voltage decouples the dc link control from the ac current control and achieves faster regulation of dc link voltage.
PROPOSED SYSTEM:
A simple and low cost way to extract and store energy from a PV source is to connect the solar panel directly to a battery with a diode. The main disadvantage of this solution is that the system does not always work in the optimal condition to convert the available solar energy. To improve the system performance, a controller can be added between the PV panel and the battery. This paper proposes a power management architecture that utilizes both super capacitor cells and a lithium battery as energy storages for a photovoltaic (PV).
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