A schematic diagram of the solar battery charging circuit. The battery is charged when the voltage of the solar panel is greater than the voltage of the battery. The charging current will decrease as the battery gets closer to being fully charged. This is just a simple circuit, and there are many other ways to charge a battery from solar power.
The choice of charging strategy will depend on the specific requirements and limitations of the off-grid solar PV system . Factors such as battery chemistry, capacity, load profile, and environmental conditions will all influence the optimal charging strategy .
This paper concludes that the choice of charging strategy depends on the specific requirements and limitations of the off-grid solar PV system and that a careful analysis of the factors that affect performance is necessary to identify the most appropriate approach.
Through the utilisation of solar PV-based generation and BESS with wireless/contactless power transmission, the proposed method offers an easy-to-setup and flexible alternative solution for the emergency power supply (EPS) for household appliances and wireless electric vehicle (EV) charging for all weather conditions.
This is particularly important in remote areas where grid electricity is not available, and reliance on diesel generators can be expensive and environmentally damaging . There are several battery charging strategies used in off-grid solar PV systems, and each strategy has a different impact on the system’s performance.
Some of the commonly used battery charging strategies include [22, 23]: Constant voltage charging: This strategy involves charging the battery at a constant voltage level until the battery is fully charged. This strategy is simple and cost-effective, but it can lead to overcharging and reduce battery life.
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