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:
Jun. 28, 2011
Filed:
Jun. 07, 2007
Khwaja M. Rahman, Troy, MI (US);
Peter J. Savagian, Bloomfield Hills, MI (US);
Matthew D. Laba, Oakland, MI (US);
Khwaja M. Rahman, Troy, MI (US);
Peter J. Savagian, Bloomfield Hills, MI (US);
Matthew D. Laba, Oakland, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Permanent magnet motors with improved torque ripple and methods for designing the same have been provided. The permanent magnet motor can include a stator having a hollow core and defining a plurality of slots; a winding disposed in each of the slots; a rotor rotatably disposed inside the hollow core of the stator; and a plurality of permanent magnets supported by the rotor. Each of the slots has a slot opening, and at least one of the slot openings can be off-center with respect to the respective slot.