The invention discloses an amorphous
alloy high-speed outer rotor
permanent magnet motor, which comprises a permanent
magnet outer rotor, an amorphous
alloy inner
stator and an air gap, wherein the outer rotor adopts a three-section
Halbach array+combined magnetic pole structure, the maximum
magnetic energy product of magnetic steel in the middle of a magnetic pole is larger than that of the same type of magnetic steel which is symmetrical on two sides, and the thickness, the space angle, the magnetizing angle and the coercive force of the magnetic steel are all obtained through optimization so as to ensure that the
harmonic distortion rate of no-load
air gap flux density of the motor is minimum, and therefore torque fluctuation of the
permanent magnet motor is restrained; an iron core of the inner
stator is formed by iron-based amorphous
alloy strips through overlying and linear
cutting so as to reduce high-frequency iron loss; and the cross section of the
stator slot wedge is of a special-shaped structure, and protrusions of the cross section in the axial direction of the slot wedge are 0.1-0.2 mm higher than a notch and the parts level with the notches alternately appear, so that the amorphous alloy stator iron core is prevented from being collided by the permanent
magnet outer rotor when the motor is assembled or disassembled. The outer rotor high-speed
permanent magnet motor is suitable for high-efficiency, high-speed and stable operation occasions.