Patent ID: 8508094

Claim:
A rotating electrical machine comprising: a stator ( 10 ) equipped with stator windings and a rotor ( 11 ); said rotor comprising a plurality of alternate North poles and South poles formed from permanent magnets (PM) and arranged according to a substantially radial configuration so as to aid flux concentration, first slots (E 1 ) arranged in a magnetic body of said rotor ( 11 ) so as to house said permanent magnets (PM); said rotor further comprising, in each of said poles thereof, a second slot (E 3 ) arranged substantially radially in said magnetic body of said rotor, between two consecutive of said permanent magnets (PM) delimiting said pole, said second slot (E 3 ) realizing a reduction in the mechanical inertia of said rotor ( 11 ); said rotor further comprising, in each of said poles thereof, a portion forming a bridge (BR) between two adjacent parts of said magnetic body of said rotor ( 11 ) on either side of said second slot (E 3 ), and said permanent magnets (PM) being approximately rectangular in shape with a height (h a ) in the radial direction of said rotor ( 11 ), a length (L zs ) in the axial direction of said rotor ( 11 ) and a width (I a ) having predetermined dimensional values; said portion forming said bridge (BR) comprising a magnetic body height (H) not greater than approximately the dimensional value of said width (I a ) of said permanent magnets (PM); said magnetic body height (H) being greater than approximately a unit metal sheet thickness of a packet of metal sheets forming the magnetic body of said rotor ( 11 ).