Harmonic injection principle of permanent magnet synchronous motor

The harmonic injection principle of permanent magnet synchronous motor is excitation. The permanent magnet synchronous motor uses permanent magnets to provide excitation, which makes the structure of the motor simpler, reduces the processing and assembly costs, saves slip rings and brushes that are prone to problems, and improves the reliability of the motor operation. Because there is no excitation current and no excitation loss, the efficiency and power density of the motor are improved.