| 主权项 |
1. A magnet-free rotating electric machine comprising:
an annular outer stator including an outer exciting coil; an annular inner stator including an inner exciting coil, the annular inner stator being formed unitedly with the outer stator and disposed inside the outer stator; an annular rotor disposed between an inner circumferential side of the outer stator and an outer circumferential side of the inner stator, the annular rotor having:
an annular rotor yoke portion;a plurality of pairs of inner and outer salient poles disposed along a circumferential direction of the rotor yoke portion, each of the inner salient poles and each of the outer salient poles being disposed respectively on an inner circumferential side and an outer circumferential side of the rotor yoke portion and forming a pair;
rotor coils, each provided for each of the pairs of inner and outer salient poles such that the rotor coil is diagonally wound between an inner circumferential surface of the rotor yoke portion on a first side in the circumferential direction and an outer circumferential surface of the rotor yoke portion on a second side with the pair of inner and outer salient poles sandwiched therebetween; and a rectifying device connected between both ends of the rotor coil, the rectifying device ensuring that polarity of an outer magnetic pole, which is an outer salient pole, and polarity of an inner magnetic pole, which is an inner salient pole, are opposite to each other, the outer magnetic pole and the inner magnetic pole being magnetized by induced current in the rotor coil by excitation of the outer stator and the inner stator, wherein the rectifying device ensures that NS magnetic pole directions of circumferentially-adjacent pairs of the inner and outer salient poles are opposite to each other. |
