Preliminary study on the matching characteristics between wind wheel and pump in a wind-powered water pumping system
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In a wind-powered water pumping system, the water pump is driven directly by a wind wheel without any control system, other than a gear box. Thus, there exists a dynamic balance between the torque provided by the wind wheel and that accessed by the water pump. That is, the torque produced by the wind wheel will often be larger or smaller than that required by the pump. If so, the system will accelerate or decelerate, thus increasing or decreasing the torque provided by the wind wheel, which will then result in an increase or a decrease in that accessed by the pump until equilibrium is re-established. In addition, the amount of water that can be pumped corresponds directly to the effective power of the wind wheel, whereas the output torque and actual power from the wind wheel depend only on its rotation rate, which is a function of the wind speed. Hence, once a good match is obtained between the torque and the power provided by the wind wheel and those required by the pump, the entire system can operate mo...
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