Efficient flux barrier motor based on hybrid cooling technology

Abstract

The invention relates to an efficient flux barrier motor based on the hybrid cooling technology. The efficient flux barrier motor comprises an enclosure, and a stator assembly and a rotor assembly, which are arranged in the enclosure, wherein the enclosure comprises a motor inner shell and a motor outer shell, a cooling liquid passage is formed between the motor inner shell and the motor outer shell, the motor outer shell is provided with a liquid inlet and a liquid outlet, both of the liquid inlet and the liquid outlet communicate with the cooling liquid passage, the stator assembly comprisesa stator, stator teeth formed in the stator and a winding wound in the stator teeth, the efficient flux barrier motor further comprises a heat pipe installed in the stator assembly, the heat pipe hasan evaporation section and a condensation section, the efficient flux barrier motor further comprises a plurality of flux barrier grooves, the flux barrier grooves extend from an outer wall of the stator into the stator teeth, the plurality of flux barrier grooves are arranged along the circumferential direction of the stator, the heat pipe is a heat pipe made of a non-permeability magnetic material, the evaporation section is installed in the flux barrier grooves, and the condensation section is arranged in the cooling liquid passage. The efficient flux barrier motor provided by the invention has the advantages of fast heat dissipation rate and can improve the motor efficiency.

Description

technical field [0001] The invention relates to a high-efficiency magnetic flux barrier motor based on hybrid cooling technology, which belongs to the technical field of motors. Background technique [0002] When the motor is working, it will generate a lot of heat, especially the high-power motor, which generates a lot of heat and needs to be discharged in time. For motors that require a higher level of waterproof and dustproof, the internal temperature rise of the motor will be more serious due to the improvement of the motor's sealing performance. The copper loss generated by the motor stator winding and the iron loss generated by the stator punch can only be transferred to the surface of the casing through the stator core through heat conduction, and then the heat is taken away by convection heat exchange. The heat transfer process is cumbersome, resulting in high local temperature of the stator winding inside the motor. The operating temperature of the motor directly ...

AI Technical Summary

Problems solved by technology

Therefore, the mainstream motor cooling method is water cooling, but there are still many deficiencies: the water-covered area of ​​the stator is small, the cooling effect is poor, and the rotor and bearings cannot be cooled sufficiently

Harmonic current or harmonic voltage will produce skin effect and magnetic potential eddy current loss in the stator winding, rotor circuit and iron core, resulting in a decrease in the overall energy efficiency of the motor

The harmonic current will increase the copper consumption of the motor. When the motor is under severe harmonic load, it will cause local overheating, increased vibration and noise, and increased temperature rise, resulting in accelerated aging of the insulation layer and shortening the mechanical life of the motor and the system.

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