PERMANENT MAGNET DYNAMOELECTRIC MACHINE

摘要

A permanent magnet dynamoelectric machine of surface magnet type is configured to have a flanged U-shaped magnet presser made of a conductive metal, and to fix the magnet presser to a rotor core using a fixing member so as to fix a part of an outer periphery of a permanent magnet in a radial direction with a flange of the magnet presser. This ensures the permanent magnet dynamoelectric machine of surface magnet type to be adaptable to large-torque, high-speed and large-capacity.

主权项

1. A permanent magnet dynamoelectric machine comprising:
a stator formed by winding a stator winding around a laminated stator core; and a permanent magnet rotor on an inner circumference of the stator, which includes a shaft, a rotor core, permanent magnets, each of which is made of a segment-shaped rare earth magnet, and disposed to have adjacent polarities alternately changed on an outer circumference of the rotor core, and a magnet presser which determines a circumferential position of the permanent magnet and presses a part of an outer periphery of the permanent magnet, wherein the magnet presser is made of a conductive metal, and formed to have a flanged U-like shape, and the magnet presser is fixed to the rotor core with a fixing member so as to fix the part of the outer periphery of the permanent magnet in a radial direction with a flange of the magnet presser.