Locomotive auxiliary power supply circuit and power supply method

Abstract

The invention discloses a locomotive auxiliary power supply circuit and a power supply method, the auxiliary power supply circuit comprises a current collector I, a current collector II and an auxiliary inverter I, the current collector I and the current collector II are connected with the input side of the auxiliary inverter I, and auxiliary loads of a locomotive comprise a first auxiliary load and a second auxiliary load; the second auxiliary load is connected with the output side of the auxiliary inverter I; the auxiliary power supply circuit further comprises a charger, a standby power supply, an auxiliary inverter II and a network control unit, the input end of the charger is connected with the auxiliary inverter I, the input end of the standby power supply and the input end of the auxiliary inverter II are electrically connected with the output end of the charger, and the output end of the auxiliary inverter II is electrically connected with the first auxiliary load. Uninterrupted power supply of important auxiliary loads such as an air conditioner can be achieved, the important auxiliary loads such as the air conditioner continuously work without power failure when the locomotive passes through a power-free area on a third rail, the use failure rate of the important auxiliary loads such as the air conditioner is reduced, the comfort degree of drivers and passengers is improved, and driving safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a locomotive auxiliary power supply circuit and a power supply method. Background technique [0002] When the traditional large railway locomotive passes through the phase-splitting dead zone, because the locomotive runs fast and the distance between adjacent dead zones is long, it is enough to use locomotive micro-braking to maintain the basic stability of the intermediate voltage when the locomotive passes through the phase-splitting dead zone Realize the uninterrupted power supply in the auxiliary load excessive phase non-electric area. [0003] For the third rail receiving urban rail subway line, in order to facilitate the passage of vehicles, the third rail must be interrupted at the fork section to form a dead zone. Taking the third rail power supply line of a certain subway as an example, the shortest dead zone is only 10 meters, and there are as many as ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a locomotive auxiliary power supply circuit and a power supply method, which can realize air conditioning The uninterrupted power supply of important auxiliary loads, such as air conditioners and other important auxiliary loads, enables the locomotive to work continuously without power supply when the locomotive passes through the dead zone on the third rail, reduces the failure rate of important auxiliary loads such as air conditioners, improves the comfort of drivers and passengers, and ensures the safety of the train Safety

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