In this paper a photovoltaic solar pumping system using a new linear actuator is presented. This linear actuator is a
double-sided flat two-phase variable-reluctance linear stepper motor that moves a piston-type water pump with the help of a
rope, a pulley and a counterweight. The entire actuator pump ensemble is controlled by a simple electronic unit that manages
the electric power generated by a photovoltaic array. The proposed system is suitable for rural communities in developing
countries because it is reliable, affordable and easy to maintain.
CitacióAndrada, P.; Castro, J. Solar photovoltaic water pumping system using a new linear actuator. "Renewable Energy and Power Quality Journal", Març 2007, vol. March 2007, núm. 5, p. 321-1-321-6.