Railway trunk line locomotive vehicle and permanent magnet synchronous traction motor thereof

Abstract

The invention discloses a permanent magnet synchronous traction motor for a railway trunk line locomotive vehicle, and the motor comprises a transmission end cover, a rotor, a stator and a non-movingend cover. The non-moving end cover is provided with an air inlet and has an air incoming channel communicated with the air inlet. The transmission end cover is provided with an air outlet, and is provided with an air outgoing channel communicated with the air outlet. An annular ventilation channel is disposed on the stator in the circumferential direction, and two ends of the ventilation channelare respectively communicated with the air incoming channel and the air outgoing channel. Two ends of a stator winding of the stator are respectively located in the air incoming channel and the air outgoing channel, and the channel walls of the air incoming channel and the air outgoing channel are in sealed connection with the stator to isolate the rotor. According to the invention, the heat dissipation capability of the stator winding is enhanced, and the running capability of the motor under the conditions of large power and large loss is improved. The motor can effectively prevent the harmful impurities in the cooling wind from causing damages to an internal magnetic rotor of the motor, and meets the requirements of the whole vehicle for the motor.

Description

technical field [0001] The present invention relates to the technical field of rail vehicles, more specifically, to a permanent magnet synchronous traction motor of a railway trunk line rolling stock, and also relates to a railway trunk line rolling stock comprising the permanent magnet synchronous traction motor. Background technique [0002] Mainline transportation of high-power locomotives is the main mode of railway transportation, which has important economic and political significance. At present, asynchronous motors are mainly used for the traction motors of locomotives and vehicles on trunk lines. With the development of the times, people have higher and higher requirements for environmental protection and energy saving. Compared with asynchronous motors, permanent magnet synchronous motors have the advantages of high efficiency, small size, light weight, etc., and their energy-saving efficiency is remarkable, and their applications are becoming more and more extens...

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Problems solved by technology

[0005] In view of this, the first object of the present invention is to provide a permanent magnet synchronous traction motor whose structural design can effectively solve the problems of poor heat dissipation and temperature rise of the fully enclosed structure permanent magnet motor. Problem, the second object of the present invention is to provide a railway mainline rolling stock comprising the above-mentioned permanent magnet synchronous traction motor

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