| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a generator generating heat into a structure that can easily be cooled, to reduce a constitution and to reduce cost in a permanent magnet-type rotary electric machine, especially, a permanent magnet-type rotary electric machine for wind power generation. <P>SOLUTION: The permanent magnet-type rotary electric machine includes a stator and a rotor 1 which is arranged by facing the stator with a prescribed interval. Permanent magnets 3 and 4 are stored in a permanent magnet slot 5. The permanent magnets 3 and 4 are arranged in a rotor core 2 by alternately changing polarity in a circumferential direction. A cooling ventilation flue 6 formed of a groove extending in an axial direction and extending toward a shaft center is formed in the rotor core 2. The groove in the cooling ventilation flue 6 is arranged toward an inner peripheral side in the radial direction from an end on an outer peripheral side in the radial direction of the rotor core 2. A fan is connected to a shaft 7 becoming a rotation shaft of the rotor core 2, and cooling wind sent from the fan is introduced to the cooling ventilation flue 6. <P>COPYRIGHT: (C)2012,JPO&INPIT |
