Orange

Safran Electronics & Defense

Renault S.a.s.

Daniel Sadarnac

Didier Marquet

Charif Karimi

Nadim Sakr

Sébastien Fontaine

Alain Gascher

The invention relates to an electrical transformer (T, T') comprising: a primary central winding () extending around an axis (X) and configured to generate a central magnetic flux when a current is passed through it circulating in a first direction around the axis (X), two peripheral primary windings () extending around the axis (X), between which the central primary winding () is located, and configured to generate peripheral magnetic fluxes when currents are passed through same respectively circulating in a second direction around the axis (X) which is opposite to the first direction, the peripheral magnetic fluxes superimposing on the central magnetic flux, wherein the windings are further configured in such a way that the peripheral magnetic fluxes compensate the central magnetic flux in the regions located beyond the peripheral windings.

Electrical transformer with windings

The device includes, in a housing, an actuator electrically connected to a battery for charging a portable item such as a mobile terminal. For a rotating actuator comprising a first member submitted to an oscillatory motion, for example a walker carrying the housing, and a second member making up at least partially a mass part, the mass part is able to oscillate around the axle of the armature with respect to the first member. A servo control system can control the actuator sometimes as a motor supplied by the battery or by allowing the mass part to move freely, sometimes as a generator charging the battery, by slaving the motion speed of the mass part to the acceleration of the oscillatory motion of the first member. This enables to recover as much electric power as possible from the walker.

Portable mechatronical device for generating electric power

Growing community of inventors

Solignac, France

Daniel Sadarnac