| 摘要 |
A three phase, permanent magnet rotor, AC electric motor includes a twenty-four unskewed slot stator wound in a three phase arrangement and an eight pole permanent magnet rotor in which the rotor pole pieces are unskewed and angularly displaced from equally 45 DEG spaced reference positions about the rotor by different amounts which are integral multiples of 1.875 DEG . The cogging frequency is eight times higher and the cogging torque are eighth that of a corresponding motor with a conventional permanent magnet rotor.
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