| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-phase AC rotary machine which can adjust magnetic flux amount from a stator passing through a magnetic gap and a rotor, and which achieves high efficiency in any rotation region.SOLUTION: A stator 1 comprises: a main field coil 14 and a magnetic flux generation unit 15 which are arranged opposite each other in a ring-shaped stator core 11; and six stator poles 12 which are arranged at an equal pitch. A plurality sets of the stator 1 in which stator coils 13 respectively wound around the stator poles 12 opposite each other are set to the same phase and a rotor 2 which includes two rotor poles 22 arranged at an equal pitch, are connected by connection magnets 41, 42. Magnetic flux of the connection magnets 41, 42 is not leaked from a magnetic gap between the rotor pole 22 and the stator pole 12 to pass through inside of the stator 1 in a de-energized state of the field coil. The magnetic flux of the connection magnets 41, 42 can be changed to the magnetic flux passing through the magnetic gap and the rotor 2 by the magnetic flux of the main field coil 15 and the magnetic flux generation unit in an energized state of the field coil. |
