Mixed ventilation cooling system and method for permanent magnet traction motor
A traction motor, ventilation and cooling technology, applied in the direction of cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems of low indirect cooling efficiency of permanent magnets, affect the heat transfer of permanent magnets, and it is difficult to ensure the heat dissipation capacity, etc., to achieve Balance temperature rise, enhance heat dissipation, and ensure uniformity
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[0030] The present invention will be further explained below in conjunction with the drawings:
[0031] The invention proposes a mixed ventilation cooling system for a permanent magnet traction motor, such as Figure 1~Figure 5 As shown, the bearing 17 of the motor is installed between the end cover 20 and the rotating shaft 21, the stator coil 12 is wound in the slot of the stator core 19, and the permanent magnet 3 is built in the rotor core 18. The cooling system is divided into radial ventilation system and axial ventilation system.
[0032] The axial ventilation system includes the laminated rotor core laminated with the rotor axial ventilation hole configuration to form the rotor axial ventilation hole 2. The stator core laminated laminated stator with the stator axial ventilation hole configuration is laminated to form the stator shaft The axial ventilation hole 5 and the axial air path centrifugal fan 4; the axial air path centrifugal fan 4 is installed at the non-driving e...
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