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US 9,178,399 B2Granted
Laminated rotor structure for a permanent magnet synchronous machine
AssigneeAXCO-Motors Oy
InventorAsko Parviainen
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AssigneeAXCO-Motors Oy
InventorAsko Parviainen
Estimating the term…
The invention relates to a laminated rotor structure for a permanent magnet synchronous machine wherein disks (1) of a ferromagnetic material constitute the body of the rotor. The body includes bars (3) of a damper winding that extend axially close to the surface (2) from one end thereof to the other, and a circle of permanent magnets (4) disposed in a V-shaped configuration inside the circle formed by the bars, in which permanent magnets the first ends (5) are disposed close to the outer perimeter of the rotor and the second ends (6) are disposed closer to the central axis of the rotor. According to the invention, two permanent magnets (4) constitute a pair of permanent magnets wherein the magnets are disposed at an angle (a) to each other so that their first ends (5) are disposed at a distance from each other and their second ends (6) in proximity to each other. In addition, a pair of permanent magnets includes an air channel (7) that extends axially through the laminar structure of the rotor in direct heat transfer contact with the second ends (6) of the magnets in the pair of magnets.
A laminated rotor structure for a permanent magnet synchronous machine wherein disks of a ferromagnetic material constitute the body of the rotor that includes bars of a damper winding extending axially close to the surface from one end thereof to the other, and a circle of permanent magnets disposed in a V-shaped configuration inside the circle formed by the bars, in which permanent magnets the first ends are disposed close to the outer perimeter of the rotor and the second ends are disposed closer to the central axis of the rotor, wherein two permanent magnets constitute a pair of permanent magnets wherein the magnets are disposed at an angle to each other so that their first ends are disposed at a distance from each other and their second ends in proximity to each other, and that a pair of permanent magnets includes an air channel that extends axially through the laminar structure of the rotor in direct heat transfer contact with the second ends of the magnets in the pair of magnets.
Dependencies are inferred from the claim text.