| 摘要 |
A high-frequency motor comprises a squirrel-cage rotor. The rotor comprises an iron core having a plurality of circular slots, a plurality of conductive rods inserted into the slots, and short-circuit rings disposed at both ends of the conductive rods. The conductive rods are made of copper. A ratio of a product of the number N2 of the conductive rods and a diameter d2 of each conductive rod to an outer diameter D of the rotor is in an optimized range of 1.1 to 1.5, namely, 1.1</=N2xd2/D</=1.5. With this optimization, it becomes possible to achieve a maximum rotational speed of more than 120,000 min-1 and obtain an excellent motor efficiency.
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