Novel permanent magnet synchronous traction motor

Abstract

The invention discloses a novel permanent magnet synchronous traction motor. The motor comprises a stator and a front end cover installed on one end of the stator. One end of the stator, which is faraway from one end of the front end cover, is provided with a rear end cover. A rotor is arranged in the internal portion of the stator. A bearing sleeves the rotor located on one end of the rear end cover. The bearing is located in the internal portion of the rear end cover. A rotary transformer sleeves the outer side of the bearing. A speed measurement gear disc sleeves the outer side of the rotary transformer. The outer side wall of the speed measurement gear disc is fixedly provided with an air inlet cover. The air inlet cover is fixedly arranged on the outer side wall of the rear end cover. In the invention, transmission losses are reduced, the traction energy consumption of a subway train is decreased, simultaneously, more free spaces are provided for the design of a bogie, the wheelbase of the bogie can be decreased, the minimum turning radius of the train is greatly reduced, which is good for the design of a rail traffic station line, and line construction cost is reduced.

Description

technical field [0001] The invention relates to a traction motor, in particular to a novel permanent magnet synchronous traction motor, which belongs to the technical field of motor application. Background technique [0002] The development of high-speed railways has put forward higher and higher requirements for locomotives, and traction motors are the core part of locomotives, so higher requirements have been put forward for traction motors: small size, light weight, high output power, and can be used when the locomotive starts. It can output a large starting torque at the same time, and can smoothly adjust the speed in a wide speed range, so as to realize the torque control of the locomotive. With the development of power electronics technology, the traction motor of locomotive has experienced the development process from DC motor to asynchronous AC motor. The development of new permanent materials and the reduction of the cost of permanent magnet materials make permanen...

AI Technical Summary

Problems solved by technology

[0003] There are many deficiencies in the current traction motors, such as the high transmission loss of traditional traction motors, the large traction energy consumption of subway trains, and the large bogie wheelbase of traditional traction motors, which is not conducive to the design of rail transit station lines. Increase the cost of line construction, therefore, a new type of permanent magnet synchronous traction motor is proposed to solve the above problems

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