Unpowered loopback auxiliary power supply and self-walking device for locomotives

Abstract

The invention discloses an unpowered loopback auxiliary power supply and self-walking device for locomotives. The device comprises two schemes; in the first scheme, the device comprises a boosting type DC/DC module, a bucking type DC/DC module, a single-phase inverter module, a three-phase inverter module, a traction inverter module and a controller; and in the second scheme, the device comprisesa bidirectional DC/DC primary module, a bidirectional DC/DC secondary module, a single-phase inverter module, a three-phase inverter module, a traction inverter module and a controller. According to the device, a traction motor can be controlled to carry out regenerative braking when being dragged to run, so as to generate power and generate a certain life power supply capacity, so that the operators can watch over on locomotives confidently and securely so as to smoothly complete the locomotive repair/loopback tasks; and DC400V or higher high-power DC power supply can be provided outside thelocomotives to realize shunting operations under speed limiting requirements.

Description

technical field [0001] The invention relates to the field of electric locomotive research, in particular to a locomotive non-power loopback auxiliary power supply and self-propelled device. Background technique [0002] Harmonious high-power AC drive electric locomotive series is the main driving force of railway traction in my country at present. When it is repaired at a higher level such as C4, C5 or C6, it is necessary to provide drivers and passengers from the locomotive attachment section. When the locomotive is completely without electricity, It is escorted to the maintenance base or OEM for repair without fire, and it takes 1 to 7 days on the way. The locomotive has no electricity for a long time, and the crew environment is bad, which indirectly leads to the escort drivers and passengers walking in the dark at night and easily tripping, or when they stop on the way, they cross the line, get under the car, or walk on the track to go to the station to heat up, keep warm...

AI Technical Summary

Problems solved by technology

The locomotive has no electricity for a long time, and the crew environment is bad, which indirectly leads to the escort drivers and passengers walking in the dark at night and easily tripping, or when they stop on the way, they cross the line, get under the car, or walk on the track to go to the station to heat up, keep warm or buy food. Even drinking and keeping warm and other violations that bring great risks to personal safety, painful lessons such as personal injuries caused by similar violations are not uncommon.

[0003] At present, the shunting operation in the non-electric area of ​​the locomotive depot is often carried out using shunting machines or d

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