Permanent-magnet synchronous traction motor for motor train

Abstract

The invention relates to a motor, in particular to a permanent-magnet synchronous traction motor for a motor train. The permanent-magnet synchronous traction motor for the motor train solves the problem that an existing permanent-magnet synchronous motor is not suitable for being directly used as a permanent-magnet synchronous traction motor for a motor train due to structure defects. The motor adopts a novel rotor magnetic circuit structure punching plate, a high-integration compact type rotor structure, a detachable connecting box structure and a lead structure. A connecting box can be conveniently disassembled so that the motor can be installed easily. A U-shaped magnetic circuit permanent magnet structure of an inner rotor is adopted, the magnetic separation bridge and circular bead design is added, and therefore the start and overload capacity of the motor can be improved. A rotor pressing ring at the driving end integrates rotor core pressing, permanent magnet end face pressing, rotor dynamic balancing and an inner seal ring labyrinth seal structure into a whole, the advantages that the structure is compact, the axial occupied space is small, and the installation is convenient are achieved, and the motor can be widely applied in the field of locomotive trains. According to the research, development and the operation of the permanent-magnet synchronous traction motor for the motor train, realistic bases are supplied for the permanent-magnet motor to research and develop a permanent-magnet traction motor structure with higher power, higher rotation speed and higher power density.

Description

technical field [0001] The invention relates to a motor, in particular to a permanent magnet synchronous traction motor for a motor vehicle. Background technique [0002] With the transformation of railway locomotive traction technology from DC drive to AC drive, the requirements for system miniaturization and light weight will come to an end. Low operating cost development. The permanent magnet motor transmission system is more and more favored by users for its high efficiency, energy saving, low noise and low maintenance. The development of a suitable permanent magnet transmission system will become the development direction of railway traction technology in the future. [0003] The load of the motor vehicle traction motor is a wide variable load. In this variable load occasion, it is required to output high efficiency and high power factor under various working conditions of full load and light load. The permanent magnet synchronous motor has high efficiency and power f...

AI Technical Summary

Problems solved by technology

[0012] The invention solves the problem that the existing permanent magnet synchronous motor is not suitable to be directly used as a permanent magnet synchronous traction motor for a motor vehicle due to structural defects, and provides a permanent magnet synchronous traction motor for a motor vehicle

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