Urban rail vehicle multi-phase traction system and urban rail vehicle thereof

Abstract

The invention provides an urban rail vehicle multi-phase traction system and an urban rail vehicle thereof. The system comprises a direct-current power supply module, a plurality of traction inversionmodules and a multi-phase motor module, wherein the input ends of the plurality of traction inversion modules are respectively connected with the direct-current power supply module, and the output ends of the plurality of traction inversion modules are respectively connected with each phase of motor of the multi-phase motor module, so each traction inversion module respectively controls the powersupply input of each phase of motor of the multi-phase motor module. The urban rail vehicle is driven by the multi-phase motor, each traction inverter controls the power input of the motor of each phase, once a certain phase goes wrong and blocks pulses, other phases can still form a circular magnetic field, and the situation that the power output of the shaft is completely cut off, and consequently the performance of the vehicle is sharply reduced is avoided.

Description

technical field [0001] The present invention relates to the field of electrical technology, in particular, to a multi-phase traction system of an urban rail vehicle and an urban rail vehicle. Background technique [0002] With the rapid development of the rail transit industry, the requirements for the carrying capacity and operation reliability of vehicles are getting higher and higher. At present, rail vehicles basically use three-phase motors, which are matched with three-phase inverters. But the disadvantage is that once a motor fails, the corresponding traction inverter will block the pulse, and the shaft will lose power, resulting in a sharp drop in vehicle dynamic performance, and it can only be operated with a large load reduction, which will affect the operation of the vehicle. Contents of the invention [0003] According to the technical problems raised above, a multi-phase traction system for urban rail vehicles is provided. The drive of the urban rail vehicle...

AI Technical Summary

Problems solved by technology

But the disadvantage is that once a motor fails, the corresponding traction inverter will block the pulse, and the shaft will lose power, resulting in a sharp drop in vehicle dynamic performance, and it can only be operated with a large load reduction, which will affect the operation of the vehicle

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