Solar water pumping systems are used to pump small amount of water using solar energy. They can be practical solutions in rural areas not connected to an electrical grid. They can also be used by families or farms in smaller or larger scale to save electricity costs.
Types of water pumping system:
1). Direct-coupled solar pumping systems 2). Battery-coupled solar pumping systems
In direct-coupled solar water pumping systems the electricity from the PV modules is sent directly to the pump, which pumps water through a pipe to where it is needed. This system is designed to pump water only during the day. The amount of water pumped is totally dependent on the amount of sunlight hitting the PV panels and the type of pump.
Battery-coupled solar water pumping systems consist of photovoltaic (PV) panels, a charge control regulator, batteries, pump controller, pressure switch, tank and a DC water pump. The electric current produced by the solar panels during periods of high sun charges the batteries. The batteries then supply power to the pump anytime water is needed. By using batteries the pumping is spread over a longer period of time by providing a steady operating voltage to the DC motor of the pump.
Special Features of Solar Powered Pump