Patent ID: 8358040
Filing Date: 2013-01-22
Classification: H01F,H02K

Abstract:
1. A permanent magnet electric rotating machine comprising a stator core wound with windings and a rotor having a permanent magnet and rotatably supported to the stator core, wherein: the permanent magnet comprises a magnetic powder having powder grains which are coated with a fluoro-containing compound of at least one of an alkaline earth metal and a rare earth metal; and a current supplier which supplies the windings with current in which the contents of fundamental wave components of the current supplied to the windings is controlled so that the content A of the 5th higher harmonic component, the content B of the 7th higher harmonic wave component, and the content C of the 11th higher harmonic wave component are A<C<B and B is 20% or less, assuming the total of the contents of the fundamental wave components being 100%.