Patent ID: 8680739
Filing Date: 2014-03-25
Classification: H02K

Abstract:
1. A rotary electrical machine comprising: a rotor disc; and an armature; wherein the rotor disc is configured in such a manner that a plurality of rectangular magnets whose longitudinal direction is along a surface of the rotor disc and crosses the direction of rotation are disposed on the rotor disc, that the magnets disposed on the rotor disc are magnetized in the thickness direction of the rotor disc, and that the polarities of neighboring magnets differ from each other; wherein the armature is configured in such a manner that a plurality of armature cores are disposed to sandwich the magnets on the rotor disc, that a winding is commonly wound between the armature cores, and that the plurality of armature cores commonly wound by the winding configure a phase; and wherein, when the angle formed by the neighboring magnets on the rotor disc is θ and the symbol n represents an arbitrary harmonic number, the angle formed by the armature cores in the phase is 2θ±θ/n.