The invention discloses an overall
machine wind path structure of a high-power and high-peed
permanent magnet synchronous motor. The overall
machine wind path structure of the high-power and high-peed
permanent magnet synchronous motor comprises a motor and a cooler matched with each other, wherein the motor comprises a
stator and a rotor, the
stator surrounds the rotor and is provided with an air gap in the middle, the rotor comprises a rotor shaft and rotor poles, and each rotor pole comprises a permanent
magnet steel and a magnetic pole. The overall
machine wind path structure is characterized in that a radial air way is arranged on the
stator, the rotor adopts a
welding rib shaft structure, spaces between
welding ribs form
waist-shaped air holes, a plurality of rows of radial air holes are arranged between the rotor poles of the rotor, and axial flow fans are installed on two sides of the rotor shaft of the rotor. Whether the rotor is in a
solid structure or a lamination structure, the overall machine wind path structure can prevent
magnet steels from overheating partially, prevent the
magnet steels from losing
magnetism irreversibly and improve work reliability of the motor, and simultaneously the length of the air gap is not increased, the usage amount of the magnet steels is reduced, wind resistance of an overall machine wind path is decreased, and a need for cooling the stator fully is satisfied.