| 摘要 |
A high efficiency, low vibration and low noise permanent magnet synchronous motor. The stator (30) comprises a stator core (1) having a magnetic pole tooth (2) formed between adjoining slots (3), and a stator winding (4) arranged in the slot (3) of the stator core (1), and the rotor (40) comprises a rotor core (5), a plurality of magnet insertion holes (8), permanent magnets (7) being inserted into the magnet insertion holes (8), and a plurality of slits (6) formed in the rotor core (5) on the outer circumferential side of the magnet insertion holes (8). A plurality of slits (6) in the vicinity of the magnetic pole center of the stator core (1) out of the slits (6) are arranged such that the magnetic flux generated from the permanent magnets (7) is directed in a direction to converge on the outside of the stator core (1), and the slits (6) in the vicinity of the interpole portion of the rotor core (5) are arranged to be directed in a direction different from that of the plurality of slits (6) in the vicinity of the magnetic pole center of the rotor core (5). ® KIPO & WIPO 2009
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