CN202368403U

CN202368403U - Over splitting phase continuous power supply device for auxiliary circuit of motor train unit

Info

Publication number: CN202368403U
Application number: CN2011205431621U
Authority: CN
Inventors: 周安德; 陈爱军; 李西宁; 刘斌; 陈雷平; 陈三猛
Original assignee: CSR Zhuzhou Electric Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2012-08-08
Anticipated expiration: 2021-12-22

Abstract

The utility model discloses an over splitting phase continuous power supply device for an auxiliary circuit of a motor train unit. The continuous power supply device comprises a pantograph, a main circuit breaker, a transformer, a traction motor, a four-quadrant rectifier, a static inverter and an auxiliary current transformer, wherein the auxiliary load of the motor train unit electrifies from a middle DC circuit link, and the auxiliary current transformer is subjected to inversion, so that the auxiliary load of the motor train unit in over phase splitting is always in power-on state, the frequent starting of the auxiliary load is avoided, the service life of the auxiliary load is prolonged, at the same time, the passenger panic and other problems caused by sudden power-off are eliminated, and the comfort and the satisfaction of the passengers are improved.

Description

A kind of motor train unit subsidiary loop is crossed phase-splitting uninterrupted power supply device

Technical field

The utility model belongs to railway transportation equipment car load technical field, and particularly a kind of motor train unit subsidiary loop is crossed phase-splitting uninterrupted power supply device.

Background technology

Because what the rail traction contact system used is the individual event industrial-frequency alternating current; In order to make the electric system three-phrase burden balance and to improve the electrical network degree of utilization, require electrification railway contact net segmentation phase-splitting power supply, for preventing phase fault; Each is alternate cuts apart with air or insulator, becomes phase-splitting.Through phase-separating section the time, motor train unit need break off the input side of leading disconnected or major-minor current transformer, and pantograph will be passed through phase-separating section under currentless state.

Existing pull-in control system constructional drawing is as shown in Figure 1; Comprise pantograph 1, line circuit breaker 3, voltage transformer 5, traction electric machine 4, four-quadrant rectifier (4QC) 7, static power invertor (SIV) 8, ground connection recycling device 6, lightning arrester 2; Voltage transformer 5 has three groups of former limit windings and five groups limit windings; The 5th group of time limit winding and cooresponding former limit winding thereof are auxiliary winding; The former limit winding of pantograph 1, line circuit breaker 3, voltage transformer 5 connects successively, and lightning arrester 2 parallel connections insert between pantograph 1 and the line circuit breaker 3, and four groups limit windings of voltage transformer 5 are connected with a four-quadrant rectifier 7 respectively; Two dc output ends of each four-quadrant rectifier 7 are connected with two direct-flow input ends of a static power invertor 8 respectively, and the three-phase output end of static power invertor 8 also is connected with an above traction electric machine; The 5th group limit winding of voltage transformer is connected with a static power invertor 8 through a four-quadrant rectifier 7, and the three-phase output end of static power invertor 8 connects assistant load; Between each four-quadrant rectifier 7 and the static power invertor 8 and be connected with an electric capacity.

Existing pull-in control system passes through the auxiliary winding power taking of voltage transformer, at this moment, and under the situation of breaking off line circuit breaker or input side; Its voltage transformer auxiliary winding no-output, pull-in control system can't be worked, so assistant load all needs force disconnect at undue phase time; Increased the number of starts of load; Cause its to be reduced like this, and the air-conditioning even load can not work in service life, greatly reduce passenger's traveling comfort.

The utility model content

The utility model technical matters to be solved is; Not enough to prior art, provide a kind of motor train unit subsidiary loop to cross phase-splitting uninterrupted power supply device, guarantee that the assistant load of motor train unit does not cut off the power supply at undue phase time; Avoid the frequent starting of assistant load; Improve the service life of assistant load, eliminate simultaneously, improve passenger's traveling comfort and satisfaction because the passenger that sudden power etc. cause is panic and other trouble.

For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of motor train unit subsidiary loop is crossed phase-splitting uninterrupted power supply device; Comprise pantograph, line circuit breaker, voltage transformer, traction electric machine, four-quadrant rectifier, static power invertor; The former limit winding of pantograph, line circuit breaker, voltage transformer connects successively, and winding every side in the former limit of voltage transformer has two output branch roads and an AuCT respectively; In the output branch road; The inferior limit winding of voltage transformer is connected with a four-quadrant rectifier; Two dc output ends of four-quadrant rectifier are connected with two direct-flow input ends of static power invertor respectively; The three-phase output end of static power invertor also is connected with an above traction electric machine, between four-quadrant rectifier and the static power invertor and be connected with an electric capacity; First input end parallel connection of first group of input of AuCT in winding left side, the former limit of voltage transformer inserts between the four-quadrant rectification module and static power invertor of first output branch road; Second input end of first group of input of AuCT is connected with the electric capacity of second output branch road; First input end of second group of input of AuCT is connected with the electric capacity of first output branch road, and second input end parallel connection of second group of input of AuCT inserts between the four-quadrant rectification module and static power invertor of second output branch road; The three-phase output end of AuCT connects assistant load; The winding left and right sides, the former limit of voltage transformer circuit becomes symmetrical structure.

The motor train unit subsidiary loop of the utility model is crossed in the phase-splitting uninterrupted power supply device; The assistant load of motor train unit is from the power taking of middle DC loop link, and AuCT carries out inversion, has guaranteed that the assistant load of motor train unit does not cut off the power supply at undue phase time; Avoided the frequent starting of assistant load; Improved the service life of assistant load, panic and other trouble of the passenger that eliminated simultaneously because sudden power etc. causes has improved passenger's traveling comfort and satisfaction.

Description of drawings

Fig. 1 is existing pull-in control system circuit structure diagram;

Fig. 2 crosses phase-splitting uninterrupted power supply device circuit constructional drawing for the utility model one embodiment motor train unit subsidiary loop;

Wherein:

1: pantograph; 2: lightning arrester; 3: line circuit breaker; 4: traction electric machine; 5: voltage transformer; 6: the ground connection recycling device; 7: four-quadrant rectifier (4QC rectification module); 8: static power invertor (SIV inversion module); 9: AuCT (APS inversion module).

The specific embodiment

As shown in Figure 2; The utility model one embodiment comprises pantograph 1, line circuit breaker 3, voltage transformer 5, traction electric machine 4, four-quadrant rectifier (4QC rectification module) 7, static power invertor (SIV inversion module) 8, ground connection recycling device 6; Former limit winding, the ground connection recycling device 6 of pantograph 1, line circuit breaker 3, voltage transformer 5 connect successively, and the voltage transformer 5 former limit every sides of winding have two output branch roads and an AuCT (APS inversion module) 9 respectively; In the output branch road; The inferior limit winding of voltage transformer 5 is connected with a four-quadrant rectifier 7; Two dc output ends of four-quadrant rectifier 7 are connected with two direct-flow input ends of static power invertor 8 respectively; The three-phase output end of static power invertor 8 also is connected with an above traction electric machine 4, between four-quadrant rectifier 7 and the static power invertor 8 and be connected with an electric capacity; First input end parallel connection of 9 first groups of inputs of AuCT in winding left side, the former limit of voltage transformer inserts between first the four-quadrant rectification module 7 of exporting branch road and the static power invertor 8 (A+); Second input end of 9 first groups of inputs of AuCT is connected (B-) with the electric capacity of second output branch road; First input end of 9 second groups of inputs of AuCT is connected (A-) with the electric capacity of first output branch road, between the four-quadrant rectification module 7 of second output branch road of second input end parallel connection access of 9 second groups of inputs of AuCT and the static power invertor 8 (B+); The three-phase output end of AuCT 9 connects assistant load; The winding left and right sides, voltage transformer 5 former limit circuit becomes symmetrical structure.

Motor train unit are flowed through pantograph, through line circuit breaker electric current are delivered to voltage transformer.

Assistant load is respectively A and B road from crossing the DC link power taking of phase-splitting uninterrupted power supply device; Under normal circumstances, through the rectification of 4QC module, the APS module is carried out inversion provides accessory feed; When crossing phase-separating section; The automatic neutral-section passing device of motor train unit collects the other overconfidence of rail number; And sent it to phase-splitting uninterrupted power supply device, cross phase-splitting uninterrupted power supply device control line circuit breaker and break off, and make traction electric machine take regenerative brake; Control SIV inversion module keeps the voltage stabilization in intermediate dc loop, and this moment, the SIV inversion module was in rectification state.

Because of assistant load is from the power taking of middle DC loop link, through A and the power supply of B road, work in inverter mode through control APS inversion module this moment, and the APS inversion module carries out inversion, guarantees that assistant load does not cut off the power supply at undue phase time.

Claims

1. a motor train unit subsidiary loop is crossed phase-splitting uninterrupted power supply device; Comprise pantograph, line circuit breaker, voltage transformer, traction electric machine, four-quadrant rectifier, static power invertor; It is characterized in that; The former limit winding of pantograph, line circuit breaker, voltage transformer connects successively, and winding every side in the former limit of voltage transformer has two output branch roads and an AuCT respectively; In the output branch road; The inferior limit winding of voltage transformer is connected with a four-quadrant rectifier; Two dc output ends of four-quadrant rectifier are connected with two direct-flow input ends of static power invertor respectively; The three-phase output end of static power invertor also is connected with an above traction electric machine, between four-quadrant rectifier and the static power invertor and be connected with an electric capacity; First input end parallel connection of first group of input of AuCT in winding left side, the former limit of voltage transformer inserts between the four-quadrant rectification module and static power invertor of first output branch road; Second input end of first group of input of AuCT is connected with the electric capacity of second output branch road; First input end of second group of input of AuCT is connected with the electric capacity of first output branch road, and second input end parallel connection of second group of input of AuCT inserts between the four-quadrant rectification module and static power invertor of second output branch road; The three-phase output end of AuCT connects assistant load; The winding left and right sides, the former limit of voltage transformer circuit becomes symmetrical structure.