Electric current generation apparatus with improved efficiency

Abstract

A description is given of an apparatus for the generation of electric current (1; 101; 201; 301; 351; 401; 501), comprising an armature element (10; 110; 210; 310; 360; 410; 510) supporting one or more electrical windings or conductors (12; 112; 212; 312; 362; 412; 512), appropriately arranged in a magnetic field generated by an inductor (20; 120; 320; 370; 420; 520), and optionally comprising a box structure (260) having an opening, whose surfaces have a magnetic shielding function and are intended to surround at least said armature element (10; 110; 210; 310; 360) on all sides except on the one corresponding to said opening, wherein, in operation, said armature element (10; 110; 210; 310; 360; 410; 510) is fixed and is maintained static with respect to the inductor (20; 120; 320; 370; 420; 520) and in that it comprises a shielding structure (30; 130; 230; 330; 380; 430; 530) supporting a plurality of sectors (32; 132; 232; 332; 382; 432; 532) with the function of a magnetic shield, and wherein said sectors with the function of a magnetic shield (32; 132; 232; 332; 382; 432; 532) are made up of a metal alloy comprising nickel and iron and have a thickness that varies between 0.003 mm and 3 mm, and in that said shielding structure (30; 130; 230; 330; 380; 430; 530) is set in rotation or in oscillation to cause a variation of the magnetic field and thus of the flux concatenated to said one or more windings or conductors (12; 112; 212; 312; 362; 412; 512) of the armature element (10; 110; 210; 310; 360; 410; 510).

Dependencies are inferred from the claim text.