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Diesel locomotive AC auxiliary system having train power supplying function

A technology for internal combustion locomotives and trains, which is applied in the field of rail transit, and can solve the problems of unfavorable electric energy free distribution and the inability to use electric energy input and use, so as to achieve real-time distribution and reduce the axle load of locomotives

Active Publication Date: 2016-01-06
CRRC ZIYANG CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide an AC auxiliary system for diesel locomotives with a train power supply function in view of the problems existing in the prior art, and to solve the problem that the existing two power supply methods are not conducive to the distribution of electric energy between the main generator and the auxiliary generator. The problem of free distribution between the two existing power supply methods can solve the problem that the electric energy fed back when the locomotive resistance brakes can not be used as the electric energy input when the train is powered

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  • Diesel locomotive AC auxiliary system having train power supplying function

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Embodiment

[0018] The present invention proposes an AC auxiliary system for diesel locomotives with a train power supply function, which adopts the scheme of the main and auxiliary intermediate direct current technology, specifically the three-phase alternating current output by the main generator, through the rectification module of the main converter system (generally using a rectifier) ) is rectified into 1700V DC, and then output to the three-phase AC power of the train power supply cabinet through the auxiliary train supply module (generally using an inverter) in the main transformer system, and then passed through the transformer and inverter module in the train power supply cabinet (generally using an inverter ) to obtain a DC600V voltage after chopping and step-down rectification, which can provide the DC power required by the train, and at the same time, through the independent converter module (generally using an inverter) in the auxiliary converter cabinet, the auxiliary system ...

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Abstract

The invention provides a diesel locomotive AC auxiliary system having a train power supplying function. The auxiliary system comprises a train main generator, a main conversion system and traction motors. The train main generator supplies power for the traction motors through the main conversion system. The auxiliary system also comprises a train power supply cabinet and an auxiliary conversion cabinet. Electric energy output by the main conversion system is sent to a conversion module in the auxiliary conversion cabinet after the electric energy passes through transformers and inverters in the train power supply cabinet, and the conversion module supplies power for loads of the auxiliary system. The auxiliary system can distribute traction electric energy and train power supply energy in a real-time manner. According to the invention, the train power supply can serve as the load for traction motor feedback braking, and the electric energy fed back to an intermediate DC link by the traction motors can provide electric power input for train power supplying. The auxiliary system is advantaged by high power supplying stability.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to an AC auxiliary drive system for a diesel locomotive with a train power supply function. Background technique [0002] At present, there are two commonly used train power supply methods for diesel locomotives. One is to use the main and auxiliary generator sets, and the auxiliary generator supplies power to the train. The other is that the locomotive uses an independent auxiliary diesel generator set, which is converted into the power supply required by the passenger car through phase-controlled rectification. [0003] These two power supply methods all have the following disadvantages: 1) increase the total weight and cost of the locomotive; Free distribution between the main generator and the auxiliary generator; 3) energy waste, the electric energy fed back when the locomotive resistance braking cannot be utilized as the electric energy input when the train is powered. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00
CPCY02T10/72
Inventor 伍华朱延东朱兵廖忠文李刚叶顶康
Owner CRRC ZIYANG CO LTD
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