Abstract: A turbine current generator includes a hollow bearing cylinder to be engaged inside a pipe or a duct for the transit of a fluid, in particular a fluid transit duct deriving from the drilling or exploration of an oil field; a hollow rotating cylinder rotatably and coaxially engaged inside the bearing cylinder and defining a respective transit cylindrical chamber for a fluid. The bearing and rotating cylinders defining at least a cylindrical gap; one or more magnetic or electromagnetic components operatively engaged to the bearing cylinder and/or to the rotating cylinder to generate at least one electric current during the rotation of the rotating cylinder inside the bearing cylinder; an impeller or impellers arranged in the chamber of the rotating cylinder according to positions aligned along a longitudinal axis of the latter, the impellers engaged inside the rotating cylinder to rotate integrally with the latter upon the action of a fluid.

Abstract: It is described a stator for an electric machine comprising: a hollow main body; a plurality of supporting teeth extending along an inner surface of said main body; a plurality of windings, each one engaged to a respective one of said supporting teeth; a plurality of operating elements, each one interposed between two successive windings; each one of said operating elements being suitable for thermally interacting with at least one of said windings to cool said at least one winding; each one of said operating elements being in electrical contact with a respective winding of competence being part of said plurality of windings, each operating element being configured to be traversed by a current suitable for supplying said winding of competence.

Abstract: A turbine current generator includes a hollow bearing cylinder to be engaged inside a pipe or duct for the transit of a fluid, in particular a fluid transit duct deriving from the drilling or exploration of an oil field; a hollow rotating cylinder rotatably and coaxially engaged inside the bearing cylinder and defining a respective transit cylindrical chamber for a fluid. The bearing and rotating cylinders defining at least a cylindrical gap; one or more magnetic or electromagnetic components (6)-operatively engaged to the bearing cylinder and/or to the rotating cylinder to generate at least one electric current during the rotation of the rotating cylinder inside the bearing cylinder; an impeller or impellers arranged in the chamber of the rotating cylinder according to positions aligned along a longitudinal axis of the latter, the impellers engaged inside the rotating cylinder to rotate integrally with the latter upon the action of a fluid.

Abstract: It is described a stator for an electric machine comprising: a hollow main body; a plurality of supporting teeth extending along an inner surface of said main body; a plurality of windings, each one engaged to a respective one of said supporting teeth; a plurality of operating elements, each one interposed between two successive windings; each one of said operating elements being suitable for thermally interacting with at least one of said windings to cool said at least one winding; each one of said operating elements being in electrical contact with a respective winding of competence being part of said plurality of windings, each operating element being configured to be traversed by a current suitable for supplying said winding of competence.

Abstract: A capacitive element is manufactured by using the multilayer printed circuit board technology. The body of the element includes a layer of dielectric material interposed between two layers of conductive material arranged on opposite sides of the layer of dielectric material. Each layer of conductive material is in turn covered, on its free side, with an external covering layer. The material for making the layer of dielectric material is chosen among materials having: —a dielectric permeability ?r>1, —a dielectric rigidity k>100 kV/mm, and —a loss figure Df?0.002. Furthermore, the dimensions of the layer of dielectric material are greater than the dimensions of the layers of conductive material, so as to limit the edge effects that might cause discharge phenomena and make the capacitive element flexible.

Abstract: A capacitive element is manufactured by using the multilayer printed circuit board technology. The body of the element includes a layer of dielectric material interposed between two layers of conductive material arranged on opposite sides of the layer of dielectric material. Each layer of conductive material is in turn covered, on its free side, with an external covering layer. The material for making the layer of dielectric material is chosen among materials having: —a dielectric permeability ?r>1, —a dielectric rigidity k>100 kV/mm, and —a loss figure Df?0.002. Furthermore, the dimensions of the layer of dielectric material are greater than the dimensions of the layers of conductive material, so as to limit the edge effects that might cause discharge phenomena and make the capacitive element flexible.

Abstract: The switching cell (1), comprises, between the terminals of a supply source (2) supplying a voltage (VC), a controlled power switch (T) and a current recirculation device (CRD) including a diode or a junction, between which there is defined a common terminal (O) of the cell (1). Across the current recirculation device (CRD) there are connected controlled electric charge supply means (TL, VL, DL; TH, VH, DH) comprising a first generator circuit (TL, VL, DL) for generating a low voltage, including a first d.c. voltage source (VL), an associated first controlled switch (TL), and a first diode (DL), and adapted to supply an electric charge sufficient to cause the reverse-recovery of the current recirculation device (CRD); and a second generator circuit (TH, VH, DH) for generating a higher voltage, including a second d.c.