CN203957902U

CN203957902U - A kind of diesel locomotive traction system

Info

Publication number: CN203957902U
Application number: CN201420427658.6U
Authority: CN
Inventors: 杨格; 肖功彬; 李小平; 刘松柏; 魏培华; 肖健; 李鹏; 王雨; 白云
Original assignee: Zhuzhou CSR Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2014-07-31
Filing date: 2014-07-31
Publication date: 2014-11-26
Anticipated expiration: 2024-07-31

Abstract

The utility model discloses a kind of diesel locomotive traction system, comprise auxiliary generator, described auxiliary generator mouth is connected with the first phased excitation module, and described the first phased excitation module mouth is connected with the excitation winding of the synchronous main alternator of diesel locomotive; Between described auxiliary generator mouth and described the first phased excitation module, be parallel with the second phased excitation module, described the second phased excitation module mouth is connected with the excitation winding of described auxiliary generator.The utility model has solved the problem of device structure complexity that existing locomotive secondary excitation mode exists, bulky, adjustment of field excitation low-response, dynamic performance deficiency.

Description

A kind of diesel locomotive traction system

Technical field

The utility model relates to a kind of diesel locomotive traction system.

Background technology

Diesel locomotive electric traction system comprises the main transmission ancillary system of unifying.Main transmission comprises the links such as diesel engine, synchronous main alternator, traction convertor, traction electric machine, its role is to produce locomotive traction electric energy, and electric energy is carried out to AC-DC or AC-DC-AC transformation of electrical energy, finally offer locomotive traction motor, to drive and to control locomotive operation.Ancillary system comprises auxiliary generator, auxiliary converter system, assistant load, its role is to produce ancillary system electric energy, and electric energy is carried out to AC-DC or AC-DC-AC transformation of electrical energy, finally for the accessory equipment that ensures the normal operation of main transmission equipment provides electric energy, and provide DC control supply for locomotive control equipment.

The energy source of diesel locomotive main transmission, accessory drive system is synchronous main alternator and auxiliary generator, and for these two kinds of electrical generators, current mode is as follows:

The excitation of the inner excitation generator of locomotive microcomputer system control and regulation synchronous electric generator, excitation generator output AC electric energy becomes direct current energy after uncontrollable rectifying device rectification, for synchronous electric generator provides excitation.By excitation generator-rectifying device, the exciting current signal of locomotive microcomputer is amplified, and logical this secondary amplifies mode, realizes the excitation of synchronous main alternator, thereby realizes the adjusting of electrical generator output characteristic, and its schematic diagram as shown in Figure 1.

As shown in Figure 1, the integrated a set of excitation generator-rectifying device of rotor portion of traditional combustion engine car synchronous main alternator, auxiliary generator, for secondary indirect excitation mode, at locomotive operation synchronous main alternator, in the time working generating state, excitation generator-rectifying device is with synchronous main generator rotor coaxial rotating.This system shortcoming is:

(1) adopt two-stage generator excitation structure, bulky, complex structure;

(2) adopt secondary indirect excitation mode, dynamic response is slow.Locomotive is under traction or damped condition when high-speed cruising, and the real-time correction of adhesive force of wheel track will cause the fluctuation of intermediate link power, as can not output regulates to main generator timely and effectively, will directly affect locomotive operation performance.

Summary of the invention

Technical problem to be solved in the utility model is, for above-mentioned the deficiencies in the prior art, to provide a kind of diesel locomotive traction system.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of diesel locomotive traction system, comprise auxiliary generator and synchronous main alternator, described auxiliary generator mouth is connected with the first phased excitation module, and described the first phased excitation module mouth is connected with the excitation winding of described synchronous main alternator; Between described auxiliary generator mouth and described the first phased excitation module, be parallel with the second phased excitation module, described the second phased excitation module mouth is connected with the excitation winding of described auxiliary generator.

Compared with prior art, the beneficial effect that the utility model has is: the utility model synchronous main alternator, auxiliary generator adopt one-level adjustment of field excitation structure, the threephase AC electric energy of reusable locomotive-auxiliary generating machine output, threephase AC electric energy is converted into the adjustable direct current energy of outgoing current size by phased excitation module, directly drives synchronous main alternator excitation winding.In realizing traditional excitation structure function, structure is more simple, equipment is more simplified, and dynamic response performance is faster, has solved the problem of device structure complexity that existing locomotive secondary excitation mode exists, bulky, adjustment of field excitation low-response, dynamic performance deficiency.

Brief description of the drawings

Fig. 1 is traditional combustion engine car electrical generator secondary excitation schematic diagram;

Fig. 2 is the utility model one example structure schematic diagram;

Fig. 3 is the controlled three-phase commutation bridge control principle drawing of the utility model one embodiment.

Detailed description of the invention

As shown in Figure 2, the utility model one embodiment comprises auxiliary generator, and described auxiliary generator mouth is connected with the first phased excitation module, and described rectification module mouth is connected with the excitation winding of the synchronous main alternator of diesel locomotive; Between described auxiliary generator mouth and described the first phased excitation module, be parallel with the second phased excitation module, described the second phased excitation module mouth is connected with the excitation winding of described auxiliary generator.

The second phased excitation module mouth access auxiliary generator, make the threephase AC electric energy of structure reusable locomotive-auxiliary generating machine output of the present utility model, this threephase AC electric energy is converted into big or small adjustable direct current energy by the first phased excitation module, directly drives synchronous main alternator excitation winding.

As shown in Figure 2, two phased excitation modules all can adopt the controlled three-phase commutation bridge shown in Fig. 2 to phased field system principle; The brachium pontis of this controlled three-phase commutation bridge is formed by two Thyristors in series, and the gate pole of thyristor is connected with treater, and treater is connected with diesel locomotive control power supply; The utility model adopts dsp processor.6 thyristor composition three-phase bridge all-wave controlled rectification circuits, dsp processor is according to the given output voltage expected value instruction of locomotive control network, calculate corresponding gate circuit transistor gate Trigger Angle phase place, by gate circuit transistor gate driver element, drive the conducting of controlling corresponding bridge arm unit, thereby the threephase AC electric energy of input is transformed into specific required VD.In figure, control power supply and provide working power for phased excitation module.

Claims

1. a diesel locomotive traction system, comprise auxiliary generator and synchronous main alternator, it is characterized in that, described auxiliary generator mouth is connected with the first phased excitation module, and described the first phased excitation module mouth is connected with the excitation winding of described synchronous main alternator; Between described auxiliary generator mouth and described the first phased excitation module, be parallel with the second phased excitation module, described the second phased excitation module mouth is connected with the excitation winding of described auxiliary generator.

2. diesel locomotive traction system according to claim 1, is characterized in that, described the first phased excitation module, the second phased excitation module all adopt controlled three-phase commutation bridge; The brachium pontis of described controlled three-phase commutation bridge is formed by two Thyristors in series, and the gate pole of described thyristor is connected with driving control unit, and described driving control unit is connected with diesel locomotive control power supply.