... ac pump,submersible ac pumpThis system consists of wind-gathering-ring wind turbine, controller, inverter, storage battery, submersible ... Horizontal-axis wind turbine with wind-gathering ring, principle of dynamics, low start-up wind speed, stable and reliable performance, high efficiency, power ... nearly 2 to 3 times that of same-power wind turbine.Established in 1988, Gansu Provincial Sci. and ...