| 摘要 |
A rotary electrical machine particularly useful as a turbogenerator. According to one aspect of the invention, the stator includes a plurality of parallel cores with helical stator windings. The rotor includes a shaft that rotates about a rotational axis that is parallel to the stator cores, and one or two magnets that may be electromagnets or permanent magnets. If there are two magnets, their magnetic axes are perpendicular to the rotational axis and preferably are perpendicular to each other, so that the machine may be used as an asynchronized synchronous generator. If there is one magnet, its magnetic axis is perpendicular to the rotational axis, and the stator is provided with a magnetically interactive ring that spans the stator cores to link the magnetic flux of the stator cores and the magnet. According to a second aspect of the invention, the stator includes a plurality of cores with helical stator windings. The rotor includes two permanent magnet members flanking the stator cores axially. Each permanent magnet member includes an even number of axially directed magnetic dipoles. Magnetic dipoles that face each other across the stator cores are polarized in the same direction, and the polarity of the magnetic dipoles in each permanent magnet piece alternates azimuthally around the permanent magnet piece. According to a third aspect of the invention, the stator is a stack of transverse lamination, with each lamination being mad eof one or two sets of identical lamination pieces and with successive laminations being mutually staggered. Preferably, a single set of lamination pieces is used: T-pieces that have asymmetric crossbars, with the uprights of axially successive T-pieces forming radially directed stator cores. Stator windings in insulating receptacles are wound helically around the stator cores. |
