We developed and built a functional prototype of magnetic levitation turbine.
The latter is a real revolution in the field of hydroelectric turbines because it reduces the friction between the stator and the rotor. To make it simple, our prototype will only concern the generator as rotation between the stator and the rotor.
In order to establish a viable solution, it was necessary to do a deep study on the electric and magnetic part; these studies permit us to model the system. We choose a switched reluctance generator (SRG) which will permit to transform the magnetic energy to electric energy.
After the development of the prototype, we got a mini SRG with 180 mm for the external diameter and 120 mm for the internal diameter, all this arranged in wood case. With this mini SRG, we had to find the minimal number of poles for which we an optimal performance. Otherwise, to have a stator’s rotation, it was necessary to get 2 opposed poles that are activated at the same time. We concluded that we have to put two poles more in the rotor compared to the stator. So, the prototype of the SRG is composed by 6 pairs of coils, 6 Hall Effect Sensors and 4 IGBT. The power of the microcontroller is sufficient to control and stabilize the prototype.
Thanks to tests carried on our prototype, we illustrated the idea of the rotation with magnetic levitation for a generator, implemented to the turbines, this idea will permit the fabrication of magnetic levitation turbines, the long-term objective is to get a rotation of the submersible turbine’s rotor with equilibrium and controlled by the microcontroller.