A Solar Powered Water Pump runs on electricity which is generated by photovoltaic panels. The difference between a normal electric pump and a solar pump is that the solar pump operates on Direct Current (DC) while a normal electric pump works on Alternative current (AC). The DC current produced from the PV panels is delivered to the controller and then directly to the pump. When the sun’s irradiation is high, more current is transferred to the pump and the pump works on higher speed pumping greater volume of liquid. Further, if an AC pump is used, an inverter is necessary to convert the DC generated from PV panels to AC. However, the panel and inverters must be sized accordingly to accommodate the inrush characteristic of an AC motor. Since DC systems tend to have overall higher efficiency levels than AC pumps of a similar size, the costs are reduced as smaller solar panels can be used.
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