Patent ID: 8354768

Claim:
An electromagnetic device ( 10 ) with reversible generator-motor operation, the device ( 10 ) comprising: a rotor ( 12 ; 12 ′) rotating about an axis and bearing a plurality of magnets ( 14 ; 14 ′, 14 ′ a , 14 ′ b ; 140 ) distributed at regular intervals and with alternate orientations in a substantially ring-shaped pattern; a stator ( 16 , 20 a , 20 b , 18 , 22 a , 22 b ; 16 ′, 18 ′, 20 ′, 22 ′) comprising at least one magnetic yoke ( 16 , 18 ; 16 ′, 18 ; 6 ) having a pair of projecting arms ( 17 a , 17 b , 19 a , 19 b ; 7 ) that extend towards the magnets ( 14 ; 14 ′, 14 ′ a , 14 ′ b ; 140 ) and bear a respective coil ( 20 a , 20 b , 22 a , 22 b ; 20 ′, 22 ′; 21 ) for electrical connection to a utilising device or a power driver, the at least one magnetic yoke ( 16 , 18 ; 16 ′, 18 ′; 6 ) being part, together with a pair of magnets ( 14 ; 14 ′, 14 ′ a , 14 ′ b ; 140 ) confronting the yoke arms ( 17 a , 17 b , 19 a , 19 b ; 7 ) at a given instant and an air gap separating the yoke from the magnets, of a same closed magnetic circuit; characterised in that the at least one magnetic yoke ( 16 , 18 ; 16 ′, 18 ′; 6 ) is independently mounted on an own support ( 54 ) equipped with adjusting units ( 56 , 82 , 84 , 92 ) arranged to adjust the yoke position relative to the confronting magnets ( 14 ; 14 ′, 14 ′ a , 14 ′ b ; 140 ), and forms, together with its coils ( 20 a , 20 b , 22 a , 22 b ; 20 ′, 22 ′; 21 ), its support ( 54 ) and its adjusting units ( 52 , 56 ), an elementary stator cell that can be replicated to form a reversible electromagnetic device ( 10 ) including single-phase or multiphase modules.