An electric motor-generator has a rotor (1), a stator including soft ferromagnetic cores (3, 5) and coils (4, 6), permanent magnets (2) having pole axes in a plane radial to an axis of rotation of the rotor, means for mounting the magnets, the cores and coils to the rotor and stator, and means for...http://www.google.fr/patents/US5786645?utm_source=gb-gplus-shareBrevet US5786645 - Motor-generator using permanent magnets
