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Project | Permanent Magnet Motor | Induction Motor | Permanent Magnet-Assisted Non-Magnetic Synchronous | Non-permanent magnet non-magnetic synchronous motor |
Efficiency | High | Low | Higher | High |
Motor cost | High | Lower | High | Low |
Inverter cost | Low | High | Lower | High |
Motor system cost | High | Lower | Higher | Low |
Motor temperature rise | High | High | Higher | Low |
Servo accuracy | Relatively High | Low | Higher | High |
Whether it contains permanent magnet material | Contain | Not Included | Contains | Not included |
Noise level | High | High | Higher | Low |
Shaft current | High | High | Higher | Low |
Motor size | Small | Large | Smaller | Small |
Maintenance convenience | Difference | Better | Difference | Good |
Motor life | Short | Longer | Short | Long |
Tooth slot positioning torque | Large | None | Larger | None |