Environmentalists hold solar energy in high regard as a newly-emerging source of renewable energy. However, weather conditions such as cloudy skies and rainy days can hinder its production. In the absence of sunlight, solar batteries can be used to store energy.
An off grid power generation system that uses the principle of photoelectric effect to turn solar energy into electricity is known as a photovoltaic system. This system normally consists of solar cell modules, controllers, battery packs, and DC / AC inverters. By harnessing the power of the sun, it allows for self-sufficient energy generation without requiring a connection to the traditional power grid.
The main purpose of the solar cell module is to transform solar energy into electrical power, which is then used to power electrical devices or to recharge battery packs. The controller's main function is to protect the battery by regulating charging and discharging. The battery stores the electrical energy gathered by the solar cells. Finally, the inverter converts the direct current into alternating current. During periods when sunlight is scarce, such as on cloudy days or in the evening, the battery pack will continue to supply energy to ensure that the load remains powered.
There are two common working modes of storage batteries: recycling and floating charge. When a battery is frequently charged and discharged, it operates in the recycling mode. On the other hand, if it remains charged for long periods of time, it is used for floating charge. This helps to compensate for the capacity loss that results from self-discharge. In a photovoltaic power generation system, VRLA batteries are typically utilized in the recycling mode.