ROTOR OF A ROTARY ELECTRICAL MACHINE, AND ROTARY ELECTRICAL MACHINE COMPRISING A ROTOR OF THIS TYPE

摘要

A rotor which includes a plurality of permanent magnets arranged in first recesses which extend axially and are regularly distributed between a circumferential portion and a central portion of the magnetic body of the rotor, such as to define a plurality of circumferential polar sections. The magnets each comprise a first portion close to the circumferential portion, wherein the first portion is adjacent to a second portion close to the central portion, the first portion having a first rectangular radial section with a first predetermined width in a circumferential direction and the second portion having a second rectangular radial section with a second predetermined width in a circumferential direction, the second width being smaller than the first width. According to the invention, the rotor also includes a plurality of second recesses which extend axially and are each arranged between two example consecutive magnets at the second portion thereof.

主权项

1. Rotor (1) of a rotary electrical machine comprising a plurality of alternating north (N) poles and south poles (S) formed from a plurality of permanent magnets (3) arranged in first recesses (4) which extend axially, and are distributed regularly between a circumferential part (5) and a central part (6) of the magnetic mass (2) of said rotor (1), such as to define a plurality of circumferential polar sections (11), said permanent magnets (3) each comprising a first part close (7) to said circumferential part (5) adjacent to a second part (8) close to said central part (6), said first part (7) having a first rectangular radial section with a first predetermined width (L1) in a circumferential direction, and said second part (8) having a second rectangular radial section with a second predetermined width (L2) in a circumferential direction, said second width (L2) being smaller than said first width (L1), wherein it additionally comprises a plurality of second recesses (9) which extend axially, and are each arranged between two consecutive examples of said magnets (3) at said second part (8).