Power supply system and method of long-stator linear synchronous motor

Abstract

The invention discloses a power supply system and method for a long-stator linear synchronous motor, and the system comprises: N converters which are laid on the ground where an operation track of a high-speed maglev train is located and are connected with the long-stator linear synchronous motor laid on the operation track, wherein N is an integer greater than 1; N sub-controllers which are connected with the N converters one by one; and a main controller which is connected with the N sub-controllers and is used for carrying out current distribution on each converter according to the tractiondemand current of the high-speed maglev train and correspondingly controlling the output current of each converter to reach a respective current distribution value by utilizing each sub-controller. Visibly, the multiple converters supply power to the long-stator linear synchronous motor at the same time, and therefore the high-speed running requirement of the high-speed maglev train can be met; and when one converter breaks down, the other converters can continue to supply power, so that the fault-tolerant capability of the system is improved, continuous operation of the high-speed maglev train is guaranteed, and then the safety and reliability of the high-speed maglev train are improved.

Description

technical field [0001] The invention relates to the field of high-speed maglev traction and rotation, in particular to a power supply system and method for a long-stator linear synchronous motor. Background technique [0002] At present, high-speed maglev trains are being used more and more widely due to their advantages of fast speed, low energy consumption, large capacity and suitability for long-distance high-speed transportation. In the prior art, high-speed maglev trains usually use a single-ended power supply mode for power supply, that is, a converter supplies power to the long-stator linear synchronous motor, the traction power source of the high-speed maglev train, through a feeder cable. However, when the high-speed maglev train runs at high speed and requires a large acceleration, the current bearing capacity of a converter often cannot meet the actual traction demand of the high-speed maglev train, thus limiting the operation of the high-speed maglev train; moreo...

AI Technical Summary

Problems solved by technology

However, when the high-speed maglev train runs at high speed and requires a large acceleration, the current bearing capacity of a converter often cannot meet the actual traction demand of the high-speed maglev train, thus limiting the operation of the high-speed maglev train; moreover, when the converter When a fault occurs, the high-speed maglev train cannot continue to operate, thereby reducing the safety and reliability of the high-speed maglev train

Images