The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2015
Filed:
Jan. 25, 2012
Asko Parviainen, Lappeenranta, FI;
Asko Parviainen, Lappeenranta, FI;
AXCO-Motors Oy, Lappeenranta, FI;
Abstract
The invention relates to a laminated rotor structure for a permanent magnet synchronous machine wherein disks () of a ferromagnetic material constitute the body of the rotor. The body includes bars () of a damper winding that extend 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. According to the invention, two permanent magnets () constitute a pair of permanent magnets wherein the magnets are disposed at an angle (a) 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. In addition, 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.