ROTOR FOR PERMANENT MAGNET MOTOR

摘要

PROBLEM TO BE SOLVED: To improve the performance of a motor and suppress generation of noise and vibration by intensifying magnetic flux at an inverter energizing section, in a permanent magnet embedded rotor driven by an inverter. SOLUTION: This rotor includes a permanent magnet, embedded inside a rotor core which has a shaft hole. An accommodating hole for embedding the permanent magnet is substantially recessed shape. This rotor is structured so that the bottom accommodating hole of the accommodating hole of roughly recessed shape faces the shaft hole, the edge of a side accommodating hole extends toward the outer periphery of the rotor, its magnetism is oriented at right angles to the concentrate between the energizing sections of the inverter.