The levitation technology being discovered, a batch of scientific
demonstrators, meant to confirm the research works, have been conceived
Amongst them, demonstrator n° 3 has validated :
the adaptation of our levitation technology to the sustainment of
the concept of our motor/generator, designed for a full compatibility
– levitation system,
– a high integration of the systems composing the
Tests have revealed a particularly low selfdischarge, although the
rotor was in a low vacuum.
The power necessary to levitate the flywheel has proven exceptionally
around 10 mW per kg levitated.
This promising results made it possible to consider the making of full
has designed and assembled a device to measure, axially and radially,
the bearing stiffness on our prototypes.
This prototype has been conceived by SEVIL
in June 2006, to :
achieve a very high angular velocity (100 000 RPM),
efficiently return electricity when acting as a generator,
guarantee a full compatibility with the levitation.
The prototype is currently tested. Results are very satisfying ; they
will help set up the characteristics of motors to come.
50 W.h flywheel prototype
In partnership with suppliers and potential clients, SEVIL
has designed in May 2006 a 50 W.h flywheel prototype attaining the
designated energy through a medium size, medium weight, very high RPM
rotor now spinning under an advanced vacuum.
The prototype is currently assembled and tests are to begin.