The invention discloses a
hybrid excitation type high-speed
permanent magnet motor rotor and a manufacturing method. The
hybrid excitation type high-speed
permanent magnet motor rotor comprises a rotating shaft, a sintered permanent
magnet unit, a
magnetic powder adhesive film and
carbon fiber composite unit and a rotor sheath which are sequentially arranged from inside to outside in the radial direction, wherein the sintered permanent
magnet unit is composed of sintered permanent
magnet blocks,
epoxy resin filler and a carbon
fiber layer, the sintered permanent magnet blocks are equal in
axial length and unequal in radial thickness, and each magnetic pole of the high-speed
permanent magnet motor rotor is formed by the sintered permanent magnet blocks in the circumferential direction according to the arrangement mode that the middle is high and the two ends are low; and the
magnetic powder adhesive film and
carbon fiber composite unit consists of a plurality of
magnetic powder adhesivefilm and
carbon fiber composite subunits composed of magnetic
powder adhesive film
layers and carbon
fiber layers, the number of the magnetic
powder adhesive film
layers and the number of the carbonfiber layers are different, and the sum of the number of the magnetic
powder adhesive film layers and the number of the carbon
fiber layers is not changed. According to the
hybrid excitation type high-speed permanent magnet motor rotor and the manufacturing method, the
mechanical strength of the motor rotor can be improved, the
eddy current loss of the motor rotor is reduced, and the allowable linear speed of the motor rotor is improved, thereby solving the problems of large
eddy current loss, high temperature rise and low allowable linear speed of the traditional high-speed permanent magnet motor rotor.