Patent ID: 9160218
Filing Date: 2015-10-13
Classification: H02K

Abstract:
1. Rotary electric machine having hybrid-excitation including a stator ( 10 ) equipped with stator coils and a rotor ( 11 ) comprising a plurality of alternate north poles and south poles which are formed from a plurality of permanent magnets (PM) and a plurality of field coils (EC), said permanent magnets (PM) being housed in respective first recesses (E 1 ) extending axially and distributed regularly within a circumferential portion of the magnetic body of said rotor ( 11 ), so as to define a plurality of circumferential polar sections, said field coils (EC) being housed in respective second recesses (E 2 ) extending axially and distributed regularly within an intermediate portion of the magnetic body of said rotor ( 11 ), said intermediate portion being located between said circumferential portion and a central portion (A) of said rotor ( 11 ), each said field coil (EC) being inserted in a respective radial polar tooth (RT) forming a partition between two said consecutive second recesses (E 2 ), each polar tooth (RT) being substantially aligned on a central radial axis (q) of the corresponding pole, wherein at least one said circumferential polar section includes a third recess (E 3 ) substantially aligned on said central radial axis (q) and includes, between an apex of said third recess (E 3 ) and an outer pole face, a portion of the magnetic body forming a bridge having a height of around 0.7 mm to around 2 mm.