CN103516238A

CN103516238A - Emergent direct power supply circuit of electric locomotive

Info

Publication number: CN103516238A
Application number: CN201310278673.9A
Authority: CN
Inventors: 韩群生
Original assignee: Beijing Zhuo Jiang Kechuang Science And Technology Ltd
Current assignee: Beijing Zhuo Jiang Kechuang Science And Technology Ltd
Priority date: 2013-07-04
Filing date: 2013-07-04
Publication date: 2014-01-15

Abstract

The invention relates to a power supply circuit, in particular to an emergent direct power supply circuit of an electric locomotive. The emergent direct power supply circuit of the electric locomotive utilizes an original traction main circuit of the electric locomotive and an additionally arranged control circuit to achieve a DC600V output function compatible with the main circuit, and supplies power to a train. The emergent direct power supply circuit of the electric locomotive comprises three sections of unequal bridge-type controllable rectifying circuits, and a current mutual inductor, a voltage sensor, a synchronous transformer and a control device are arranged in a winding of each of the three sections of unequal bridge-type controllable rectifying circuits. By means of the emergent direct power supply circuit of the electric locomotive, the electric locomotive which does not has the DC600V output function originally can output DC600V to undertake the rescue task.

Description

A kind of electric locomotive direct power supply circuit of meeting an urgent need

Technical field

The present invention relates to a kind of power supply circuits, relate in particular to the emergent direct power supply circuit of a kind of electric locomotive.

Background technology

At present, system-wide passenger train direct power supply technology is generally applied, the electric locomotive of Multiple Type is equipped with DC600V direct power supply device, can take on direct power supply passenger train traction task, but the electric locomotive limited amount that possesses direct power supply function, can not guarantee direct power supply train move ahead or the locomotive of following train all possesses DC600V direct power supply function.When taking on the direct power supply passenger train generation locomotive failure that is in operation, in the time of can not continuing to draw, near locomotive it does not possess again DC600V direct power supply function, can not power to car body, cannot take on rescue task, need to wait for and arrange other locomotive rescues that possess DC600V direct power supply function or carry additionally generator car, rescue time is long, particularly during the broiling summer, because breakdown locomotive can not carry out direct power supply, in compartment, aircondition can not freeze, and easily causes the pernicious transportation work style event that passenger is pounded glass for vehicle window.

DC600V direct power supply device is that railway technology department develops Passenger Electric Locomotive organized equipment, and it has the winding of independently powering, straightening and filtering unit.If, be grafted directly in the electric locomotive that there is no the reserved winding of independently powering, need to transform main transformer, High-Voltage Electrical Appliances cabinet is carried out to layout again, so engineering amount of reform is large, cost is large, and feasibility is not high.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, a kind of electric locomotive direct power supply circuit of meeting an urgent need is provided, the emergent direct power supply circuit of this electric locomotive utilizes the original traction main circuit of locomotive, install control circuit additional, realize the compatible DC600V output function of main circuit, car body is powered, make original electric locomotive that does not possess DC600V function of supplying power can export DC600V and take on rescue task, so just played actively, effectively acted on; Because the emergent direct power supply circuit of this electric locomotive is to develop in conjunction with current technology and Semiconductor Converting Technology principle, so engineering amount of reform is little, and cost is little, and feasibility is high.

In order to solve the problems of the technologies described above, the invention provides following technical proposals:

A kind of electric locomotive direct power supply circuit of meeting an urgent need, comprise three sections of not decile controlled bridge rectifier circuits, described three sections are not provided with current transformer HL, voltage sensor HV, synchrotrans T and control device in the winding in decile controlled bridge rectifier circuit, and wherein current transformer HL carries out sampling feedback to main circuit current and to controller, voltage sensor HV, main circuit terminal voltage carried out to sampling feedback and to Synchronization Network, press signal to carry out sampling feedback to control device to controller, synchrotrans T.Described control device comprises single chip control module, for locomotive working condition signal is carried out to logical operation, and control impuls control module, for generation of pulse.Described single chip control module comprises optocoupler and chip, and described pulse control module comprises pulse control and pulse amplification; Wherein locomotive traction motor contactor interlocking signal completes the transfer process of the signal of telecommunication to light signal to the signal of telecommunication through optocoupler, isolation coupling is to chip incoming line, chip is by carrying out logical operation, and the output of control impuls control module drives gate circuit transistor gate signal; The trigger impulse that the output signal of described single chip control module produces by voltage, current feedback, controls thyristor open angle α, is transferred to pulse and controls, then is amplified control signal is amplified and exported driving gate circuit transistor gate signal by pulse.Described chip adopts STC51 series monolithic.

The present invention compared with prior art, has following beneficial effect:

The emergent direct power supply circuit of electric locomotive of the present invention due to locomotive traction motor contactor interlocking signal by being inputted by light-coupled isolation in single chip control module, and carry out logical operation by chip, pulse in pulse control module is controlled will pass through voltage, the trigger impulse that current feedback produces, control thyristor open angle α, pulse amplification is isolated amplification to trigger impulse, drive thyristor gate polar circuit, finally make voltage, Current Control is stable, enter clamper, the emergent direct power supply circuit of this electric locomotive can be to powering to car body by locomotive traction loop like this, make original electric locomotive that does not possess DC600V function of supplying power can export DC600V and take on rescue task, so just played actively, effectively effect, secondly, the emergent direct power supply circuit of this electric locomotive is to develop in conjunction with current technology and Semiconductor Converting Technology principle, so engineering amount of reform is little, and cost is little, and feasibility is high.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

Fig. 1 is three sections of not decile controlled bridge rectifier circuit figure.

Fig. 2 is control device module map.

Full-bridge controlled rectification circuit figure when Fig. 3 is contactor disconnection.

In figure, 100 is that controller, 100a are that single chip control module, 100b are that pulse control module, 10a are that optocoupler, 10b are that chip, 1000a are that pulse is controlled, 1000b is that pulse is amplified.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:

Referring to Fig. 1, a kind of electric locomotive direct power supply circuit of meeting an urgent need, comprise three sections of not decile controlled bridge rectifier circuits, rectifier cell is thyristor T1, T2, T3, T4, T5, T6, and filter element is smoothing reactor L, one section of bridge full gate electric discharge is pressed as 686.8V, in the situation that blocking thyristor T3, T4, T5, T6, when a1-x1 winding positive half wave, open thyristor T1, when the negative half-wave of a1-x1 winding, open thyristor T2, to obtain circuit shown in Fig. 3, its terminal voltage maximum is about DC618V.

Described three sections not the winding in decile controlled bridge rectifier circuit be provided with current transformer HL, voltage sensor HV, synchrotrans T and control device 100.Wherein current transformer HL carries out sampling feedback to main circuit current and to controller 100, voltage sensor HV, main circuit terminal voltage is carried out to sampling feedback and to Synchronization Network, press signal to carry out sampling feedback to control device, referring to Fig. 1 to controller 100, synchrotrans T.

Sampling feedback is to control device, referring to Fig. 1.

Described control device 100 comprises single chip control module 100a, for locomotive working condition signal is carried out to logical operation, and pulse control module 100b, for generation of pulse, referring to Fig. 2.

Described single chip control module 100a comprises optocoupler 10a and chip 10b, and described pulse control module 100b comprises that 1000a is controlled in pulse and 1000b is amplified in pulse; Wherein locomotive traction motor contactor interlocking signal completes the transfer process of the signal of telecommunication to light signal to the signal of telecommunication through optocoupler 10a, isolation coupling is to chip 10b incoming line, chip 10b is by logical operation, and control impuls control module 100b output drives gate circuit transistor gate signal; The trigger impulse that the output signal of described single chip control module 100a produces by voltage, current feedback, control thyristor open angle α, be transferred to pulse and control 1000a, then by pulse, amplifies 1000b and control signal is amplified and export driving gate circuit transistor gate signal.

As preferably, described chip 10b adopts STC51 series monolithic, and this series monolithic power consumption is little, and interference resistance is strong, and can carry out in-system programming, uses very convenient.Single-chip microcomputer as control unit can meet instructions for use completely, by software programming, is reached and is controlled and the object of measuring.

Referring to Fig. 1～3, during the emergent direct power supply circuit working of electric locomotive, locomotive traction motor contactor interlocking signal passes through in single chip control module 100a by optocoupler 10a Isolation input, and carry out logical operation by chip 10b, 1000a is controlled in pulse in pulse control module 100b will pass through voltage, the trigger impulse that current feedback produces, control thyristor open angle α, pulse is amplified 1000b trigger impulse is isolated to amplification, drive thyristor gate polar circuit, voltage control adopts slow given technology, output voltage slowly increases from 0, when voltage reaches 600V, enter clamper, voltage is no longer toward rising.When as excessive in output current, Current Control enters clamper, and the curve according to design, progressively reduces voltage, finally makes voltage, Current Control stablize, and enters clamper, at this moment will obtain the full-bridge controlled rectification circuit that terminal voltage is DC600V.Thereby can power to car body, can take on rescue task, so just play actively, effectively acted on; Secondly, the emergent direct power supply circuit of this electric locomotive is to develop in conjunction with current technology and Semiconductor Converting Technology principle, so engineering amount of reform is little, and cost is little, and feasibility is high.

Claims

1. the emergent direct power supply circuit of an electric locomotive, it is characterized in that: comprise three sections of not decile controlled bridge rectifier circuits, described three sections are not provided with current transformer HL, voltage sensor HV, synchrotrans T and control device (100) in the winding in decile controlled bridge rectifier circuit, and wherein current transformer HL carries out sampling feedback to main circuit current and to controller (100), voltage sensor HV, main circuit terminal voltage carried out to sampling feedback and to Synchronization Network, press signal to carry out sampling feedback to control device (100) to controller (100), synchrotrans T.

2. the emergent direct power supply circuit of electric locomotive as claimed in claim 1, it is characterized in that, described control device (100) comprises single chip control module (100a), for locomotive working condition signal is carried out to logical operation, with control impuls control module (100b), for generation of pulse.

3. the emergent direct power supply circuit of electric locomotive as claimed in claim 2, it is characterized in that, described single chip control module (100a) comprises optocoupler (10a) and chip (10b), and described pulse control module (100b) comprises that (1000a) controlled in pulse and (1000b) amplified in pulse; Wherein locomotive traction motor contactor interlocking signal completes the transfer process of the signal of telecommunication to light signal to the signal of telecommunication through optocoupler (10a), isolation coupling is to chip (10b) incoming line, chip (10b) is by carrying out logical operation, and control impuls control module (100b) output drives gate circuit transistor gate signal; The trigger impulse that the output signal of described single chip control module (100a) produces by voltage, current feedback, control thyristor open angle α, be transferred to pulse and control (1000a), then by pulse, amplifies (1000b) and control signal is amplified and export driving gate circuit transistor gate signal.

4. the emergent direct power supply circuit of electric locomotive as claimed in claim 1 or 2, is characterized in that, described chip (10b) adopts STC51 series monolithic.