A permanent magnet synchronous motor direct-drive traction system of a high-speed rail motor train unit is characterized in tat a high-speed traction motor and a front wheel pair are integrated to directly drive wheels, and the motor and the front wheel share a common wheel shaft and a bearing, so accessory saving and weight reduction are achieved; the high-speed traction motor works in a high vehicle speed range with a small interval, so the motor train unit is large in traction force, short in acceleration time, high in working efficiency and good in stability; a low-speed traction motor ishigh in efficiency in a low-speed working interval, and torsion of a driving shaft of the low-speed traction motor is transmitted to a wheel set shaft of a bogie through gear reduction and an overrunning clutch, so the running resistance caused by the magnetic resistance of the low-speed traction motor when the high-speed rail motor train unit runs at a high speed is avoided; the contradiction between firmness and magnetic flux leakage of permanent magnet poles of an inner rotor 8-pole permanent magnet brushless direct current motor is thoroughly solved through a copper ring binder, so the motor efficiency is improved; and the permanent magnet poles of an outer rotor 6-pole permanent magnet synchronous alternating current motor are arranged on the inner circle of a magnetic conduction ring, so the problem that the permanent magnet poles are thrown away does not exist.
一种高铁动车组永磁同步电机直驱牵引系统,高速牵引电机与前轮对一体化,直接驱动车轮,电机与前轮利用公共的轮轴和轴承,节省配件、减轻重量,高速牵引电机工作在区间小的高车速范围内,使动车组牵引力大、加速时间短、工作效率高、稳定性好,低速牵引电机在低车速工作区间效率高,低速牵引电机的驱动轴的扭力经过齿轮减速和超越离合器传动到转向架的轮对轴上,避免了高铁动车组在高速行驶时低速牵引电机的磁阻带来的行驶阻力,内转子8极永磁无刷直流电机的永磁体磁极釆用铜环绑定器彻底解决牢固与漏磁的矛盾,提高了电机效率,外转子6极永磁同步交流电机的永磁体磁极设置在导磁圈内圆,不存在永磁体磁极被甩掉的问题。
Permanent magnet synchronous motor direct-drive traction system of high-speed rail motor train unit
高铁动车组永磁同步电机直驱牵引系统
2020-07-24
Patent
Electronic Resource
Chinese
European Patent Office | 2021
|DRIVE UNIT FOR MULTIPHASE PERMANENT MAGNET SYNCHRONOUS MOTOR
European Patent Office | 2015
|DRIVE UNIT FOR MULTIPHASE PERMANENT MAGNET SYNCHRONOUS MOTOR
European Patent Office | 2017
|DRIVE UNIT FOR MULTIPHASE PERMANENT MAGNET SYNCHRONOUS MOTOR
European Patent Office | 2016
|