CN107070183A - Current transformer direct current input control device - Google Patents
Current transformer direct current input control device Download PDFInfo
- Publication number
- CN107070183A CN107070183A CN201710295911.5A CN201710295911A CN107070183A CN 107070183 A CN107070183 A CN 107070183A CN 201710295911 A CN201710295911 A CN 201710295911A CN 107070183 A CN107070183 A CN 107070183A
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- Prior art keywords
- current
- switch
- input port
- output port
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
Abstract
The present invention provides a kind of current transformer direct current input control device, including：Control circuit；The control circuit includes：First input port, the second input port, switch element, current sensor, voltage sensor, safety electric capacity, the first output port and the second output port.The current transformer direct current input control device can realize the function of break-make, the electric current of detection vehicle busbar voltage and main circuit of converter and suppression current transformer to the electromagnetic interference of external equipment of the direct-flow input signal of control main circuit of converter, and integrated level height, small volume, convenient disassembly, reliability are high.
Description
Technical field
The present invention relates to great power conversion circuit apparatus field, more particularly to a kind of current transformer direct current input control device.
Background technology
With economy and the reach of science, various high-power electric and electronic convertor equipments are played the part of in each field increasingly to be weighed
The role wanted.Particularly in field of track traffic, with the continuous improvement of demand, rail vehicle forward direction is high-power, high speed, Gao Ke
Fast-developing by property direction, the performance of current transformer has been increasingly becoming the bottleneck of restriction vehicle development.Current transformer direct current input and
Pre-charge control unit is even more one of most important part in whole current transformer, and its performance directly affects current transformer or even whole car
Performance.
In high-power converter, the control of input element is extremely important, and input element not only needs control current transformer letter
Number break-make, and to possess measurement vehicle busbar voltage and main circuit of converter electric current, and connect in main circuit of converter
Enter the ability of line precharge during direct-flow input signal to each device in main circuit of converter first.Simultaneously as track traffic row
Industry has the harsh requirement of comparison to the Electro Magnetic Compatibility of current transformer, and not only current transformer will have stronger antijamming capability, unsteady flow
Device can not produce interference to external equipment in itself.
At present, do not have an integrated form module for being provided simultaneously with above-mentioned functions in current transformer, correlation function is to become
Flow and connect scattered electronic component realization in device by conductors such as wire, copper bars.Such structure not only answer by assembling process
Miscellaneous, space-consuming is big, and electromagnetic interference is strong, it is more difficult when later maintenance, it is necessary to safeguarded inside current transformer or
Replacement operation, strong influence operating efficiency, greatly reduces the reliability, versatility, flexibility of whole current transformer.
The content of the invention
The present invention provides a kind of current transformer direct current input control device, to solve to control the main electricity of current transformer in the prior art
The break-make of the direct-flow input signal on road, the electric current of measurement vehicle busbar voltage and main circuit of converter and to suppress current transformer external
The function of the electromagnetic interference of portion's equipment is to connect scattered electronic component reality by conductors such as wire, copper bars in current transformer
It is existing, the problem of causing assembling process complexity, big space-consuming, strong electromagnetic interference and the difficult later maintenance of current transformer.
The present invention provides a kind of current transformer direct current input control device, including：Control circuit；The control circuit includes：
First input port, the second input port, switch element, current sensor, voltage sensor, safety electric capacity, the first output end
Mouth and the second output port；
The first input port is used for the positive output port for being connected to car body, and second input port is used to be connected to
It is negative；
First output port is used for the positive input port for being connected to current transformator power module, second output port
It is negative for being connected to；
The two ends of the voltage sensor are respectively connecting to the first input port and second input port, are used for
Detect vehicle busbar voltage；One end of the current sensor is connected to the first input port, and the other end is connected to described
One end of switch element, the electric current for detecting main circuit of converter；The other end of the switch element is connected to the safety
One end of electric capacity and first output port, the other end of the safety electric capacity are connected to second input port and described
Second output port；The switch element is used for the break-make for controlling the direct-flow input signal of main circuit of converter.
The present invention is by providing a kind of current transformer direct current input control device, including first input port, the second input
Mouth, switch element, current sensor, voltage sensor, safety electric capacity, the first output port and the second output port, it is described
First input port is used for the positive output port for being connected to car body, and first output port is used to be connected to current transformer power mould
The positive input port of block, second input port and second output port are negative for being connected to；The voltage sensor
It is connected between two input ports, for detecting vehicle busbar voltage, the current sensor is connected to first input port
And first between output port, the electric current for detecting main circuit of converter, the safety capacitance connection to two output ports
Between, for suppressing electromagnetic interference of the current transformer to external equipment, the switch element is connected to first input port and first
Between output port, the break-make of the direct-flow input signal for controlling main circuit of converter.The current transformer direct current input control
Device integrated level is high, small volume, and because the current transformer direct current input control device is arranged on outside current transformer, dismounting side
Just, reliability is high.
Brief description of the drawings
Fig. 1 is the circuit diagram for the current transformer direct current input control device that the embodiment of the present invention one is provided；
Fig. 2 is the circuit diagram for the current transformer direct current input control device that the embodiment of the present invention two is provided；
Fig. 3 is the circuit diagram for the current transformer direct current input control device that the embodiment of the present invention three is provided；
Fig. 4 is the circuit diagram for the current transformer direct current input control device that the embodiment of the present invention four is provided；
Fig. 5 A are a kind of front view for current transformer direct current input control device that the embodiment of the present invention five is provided；
Fig. 5 B are a kind of rearview for current transformer direct current input control device that the embodiment of the present invention five is provided.
Description of reference numerals：
1- first input ports；The input ports of 2- second；
3- switch elements；4- current sensors；
5- voltage sensors；6- safety electric capacity；
The output ports of 7- first；The output ports of 8- second
9- first switch 10- second switches；
11：Resistive module；12- fastp-acting fuses；
13- reactors；14- frameworks；
15- controls wiring connector；16- copper bars.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel obtain under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is a kind of circuit diagram for current transformer direct current input control device that the embodiment of the present invention one is provided.Such as Fig. 1 institutes
Show, current transformer direct current input control device includes：Circuit is controlled, control circuit includes：First input port 1, the second input
Mouth 2, switch element 3, current sensor 4, voltage sensor 5, safety electric capacity 6, the first output port 7 and the second output end
Mouth 8；The first input port 1 is used for the positive output port for being connected to car body, and second input port 2 is used to be connected to
It is negative；First output port 7 is used for the positive input port for being connected to current transformator power module, and second output port 8 is used
It is negative in being connected to；The two ends of the voltage sensor 5 are respectively connecting to the first input port 1 and second input port
2, for detecting vehicle busbar voltage；One end of the current sensor 4 is connected to the first input port 1, and the other end connects
One end of the switch element 3 is connected to, the electric current for detecting main circuit of converter；The other end connection of the switch element 3
To one end of the safety electric capacity 6 and first output port 7, the other end of the safety electric capacity 6 is connected to described second
Input port 2 and second output port 8；The switch element 3 is used for the direct-flow input signal for controlling main circuit of converter
Break-make.
With actual scene for example：The direct current exported by the positive output port of car body is defeated by first input port 1
Enter to current transformer direct current input control device, closure switch unit 3, the DC current part now inputted passes through voltage sensor
Device 5 and the second negative input port 2 of connection so that voltage sensor 5 can detect vehicle busbar voltage in real time；The direct current of input
Another part of stream is exported to current transformer power mould after over-current sensor 4 and switch element 3 by the first output port 7
The positive input port of block so that main circuit of converter is powered；After the voltage stabilization of Support Capacitor in main circuit of converter, electricity
Flow sensor 4 can detect the DC current of main circuit of converter in real time；When there is fluctuation in the voltage of main circuit of converter, peace
Rule electric capacity 6 can suppress electromagnetic interference of the current transformer to external equipment by discharge and recharge.
As an alternative embodiment, on the basis of above-mentioned embodiment, for example, the first input end
Mouth, second input port, first output port and second output port can be copper bar.
The current transformer direct current input control device that the present embodiment is provided passes through integrated first input port, the second input
Mouth, switch element, current sensor, voltage sensor, safety electric capacity, the first output port and the second output port, by
One input port is connected to the positive output port of car body, and the first output port is connected to the positive input terminal of current transformator power module
Mouthful, the second input port and the second output port are connected to negative, and voltage sensor is connected between two input ports, and electric current is passed
Sensor is connected between first input port and the first output port, and safety capacitance connection is switched between two output ports
Unit is connected between first input port and the first output port, and the direct current input of control main circuit of converter can be realized simultaneously
Electromagnetism of break-make, the electric current of detection vehicle busbar voltage and main circuit of converter and the suppression current transformer of signal to external equipment
The function of interference, and integrated level is high, small volume, convenient disassembly, reliability are high.
Fig. 2 is a kind of circuit diagram for current transformer direct current input control device that the embodiment of the present invention two is provided.In embodiment
On the basis of one, the switch element 3 can include：First switch 9, second switch 10 and resistive module 11；Described first
One end of switch 9 is connected to one end of the current sensor 4 and the second switch 10, the other end of the second switch 10
One end of the resistive module 11 is connected to, the other end of the resistive module 11 is connected to the other end of the first switch 9
With one end of the safety electric capacity 6.
With actual scene for example：The direct current exported by car body positive output port is inputted by first input port 1
To current transformer direct current input control device, second switch 10 is closed, the DC current part now inputted passes through voltage sensor
Device 5 and the second negative input port 2 of connection so that voltage sensor 5 can detect vehicle busbar voltage in real time；The direct current of input
Another part of stream after over-current sensor 4, second switch 10 and resistive module 11, by the first output port 7 export to
The positive input port of current transformator power module so that main circuit of converter is powered；When the electricity of Support Capacitor in main circuit of converter
After pressure is stable, first switch 9 is closed, second switch 10 is disconnected, current sensor 4 can detect main circuit of converter in real time
DC current；When the voltage of main circuit of converter has fluctuation, it is external that safety electric capacity 6 can suppress current transformer by discharge and recharge
The electromagnetic interference of portion's equipment.
Specifically, the first switch 9 and second switch 10 can be any switch with connecting and disconnecting of the circuit function, citing
For, the first switch 9 can be main contactor, and the second switch 10 can be charging contactor.
Further, the resistive module 11 can include a variety of circuit structures, as an alternative embodiment,
On the basis of Fig. 2 illustrated embodiments, resistive module 11 can include first resistor and second resistance in parallel.For example,
The first resistor and second resistance can be charging resistor.
The current transformer direct current input control device that the present embodiment is provided is by providing first switch, second switch, Yi Ji electricity
Module is hindered, it is in parallel with first switch after second switch and resistive module are connected, so that in current transformer direct current input control device
During work, second switch is closed first, and during so that main circuit of converter being powered, resistive module can play a part of partial pressure, keep away
Exempt from main circuit of converter in the moment of energization because voltage is excessive and causes the damage of each device in main circuit of converter, work as change
After the voltage stabilization for flowing device main circuit, the first quick closing valve is closed, second switch is disconnected, so that main circuit of converter can reach one
Fixed voltage.
Fig. 3 is a kind of circuit diagram for current transformer direct current input control device that the embodiment of the present invention three is provided.In embodiment
One or embodiment two on the basis of, the current transformer direct current input control device can also include：Positioned at the He of first input port 1
Fastp-acting fuse 12 between the current sensor 4；One end of the fastp-acting fuse 12 is connected to the first input end
One end of mouth 1 and the voltage sensor 5, the other end is connected to one end of the current sensor 4.
With actual scene for example：The direct current exported by car body positive output port is inputted by first input port 1
To current transformer direct current input control device, closure switch unit 3, the DC current part now inputted is through overvoltage sensor
5 and the second negative input port 2 of connection so that voltage sensor 5 can detect vehicle busbar voltage in real time；The direct current of input
Another part of stream after fastp-acting fuse 12, current sensor 4 and switch element 3, by the first output port 7 export to
The positive input port of current transformator power module so that main circuit of converter is powered, when the electricity of Support Capacitor in main circuit of converter
After pressure is stable, current sensor 4 can detect the DC current of main circuit of converter in real time；When by main circuit of converter
Electric current is excessive when causing the overheat fusing of fastp-acting fuse 12, main circuit of converter power-off, so as to each in main circuit of converter
Device provides overcurrent protection；When the voltage of main circuit of converter has fluctuation, safety electric capacity 6 can suppress to become by discharge and recharge
Flow electromagnetic interference of the device to external equipment.
The current transformer direct current input control device that the present embodiment is provided is by providing fastp-acting fuse, when by current transformer master
When the electric current of circuit is excessive, fastp-acting fuse overheat fusing, main circuit of converter power-off, so as to each in main circuit of converter
Device provides overcurrent protection.
Fig. 4 is a kind of circuit diagram for current transformer direct current input control device that the embodiment of the present invention four is provided.At foregoing
On the basis of one embodiment, the current transformer direct current input control device can also include：Positioned at the switch element 3 and described
Reactor 13 between first output port 1；One end of the reactor 13 is connected to the other end and the institute of the switch element 3
One end of safety electric capacity 6 is stated, the other end is connected to first output port 7.
With actual scene for example：The direct current exported by car body positive output port is inputted by first input port 1
To current transformer direct current input control device, closure switch unit 3, the DC current part now inputted is through overvoltage sensor
5 second input ports 2 negative with connection so that voltage sensor 5 can detect vehicle busbar voltage in real time；The DC current of input
Another part after fastp-acting fuse 12, current sensor 4 and switch element 3, by the output end of reactor 13 and first
Mouth 7 is exported to the positive input port of current transformator power module so that main circuit of converter is powered, when support in main circuit of converter
After the voltage stabilization of electric capacity, current sensor 4 can detect the DC current of main circuit of converter in real time；When the main electricity of current transformer
When the voltage on road has fluctuation, safety electric capacity 6 can suppress electromagnetic interference of the current transformer to external equipment by discharge and recharge；When outer
When portion's equipment produces electromagnetic interference to main circuit of converter, the reactor can suppress the current fluctuation of main circuit of converter,
Produce the effect for preventing that external equipment from disturbing.
As an alternative embodiment, on the basis of foregoing any embodiment, according to car body in practical application
The quantity of positive output port or the quantity of current transformator power module input port, the current transformer direct current input control device may be used also
With including multiple control circuits, for example, the quantity for controlling circuit is two.
As an alternative embodiment, on the basis of foregoing any embodiment, the input control of current transformer direct current
Device can also include：Framework, circuit is controlled for integrated layout；The control circuit integrated installation is on said frame.Enter
One step, current transformer direct current input control device can also include：Wiring connector is controlled, for connecting current sensor and voltage
The control line of sensor and the auxiliary contact of switch element, control signal are introduced the controlling machine box of current transformer.Fig. 5 A are this
A kind of front view for current transformer direct current input control device that inventive embodiments five are provided, Fig. 5 B are that the embodiment of the present invention five is provided
A kind of current transformer direct current input control device rearview, as shown in Figure 5 A and 5B, the framework 14 for up and down double-layer structure,
First switch 9, second switch 10, resistive module 11, the quantity of current sensor 4 and fastp-acting fuse 12 are two, and
Layout is installed in the lower floor of framework, and alternating parallel is arranged in the first direction for second switch 10 and current sensor 4, fastp-acting fuse
12 are located at the top of second switch 10 and current sensor 4, and first switch 9 and resistive module 11 are arranged in parallel in a second direction,
First direction is vertical with second direction；The quantity of copper bar 16, voltage sensor 5 and safety electric capacity 6 is two, and layout peace
Mounted in the upper strata of framework, alternating parallel is arranged in the first direction for copper bar 16 and safety electric capacity 6, voltage sensor 5 and safety electric capacity 6
It is adjacent and arranged in parallel in the first direction；Control wiring connector 16 is laid out in the side of framework, and is connected to the upper and lower
Between；Realized and connected by metal connecting sheet between each related device.By present embodiment, it can improve between each structure
Integrated level, reduces the volume of device.
The current transformer direct current input control device that the present embodiment is provided is by providing reactor, when external equipment is to current transformer
When main circuit produces electromagnetic interference, the reactor can suppress the current fluctuation of main circuit of converter, that is, producing prevents outside
The effect of equipment interference.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a kind of current transformer direct current input control device, it is characterised in that including：Control circuit；The control circuit includes：The
One input port, the second input port, switch element, current sensor, voltage sensor, safety electric capacity, the first output port,
And second output port；
The first input port is used for the positive output port for being connected to car body, and second input port is negative for being connected to；
First output port is used for the positive input port for being connected to current transformator power module, and second output port is used for
It is connected to negative；
The two ends of the voltage sensor are respectively connecting to the first input port and second input port, for detecting
Vehicle busbar voltage；One end of the current sensor is connected to the first input port, and the other end is connected to the switch
One end of unit, the electric current for detecting main circuit of converter；The other end of the switch element is connected to the safety electric capacity
One end and first output port, the other end of the safety electric capacity is connected to second input port and described second
Output port；The switch element is used for the break-make for controlling the direct-flow input signal of main circuit of converter.
2. device according to claim 1, it is characterised in that the switch element includes：First switch, second switch,
And resistive module；
One end of the first switch is connected to one end of the current sensor and the second switch, the second switch
The other end is connected to one end of the resistive module, and the other end of the resistive module is connected to the other end of the first switch
With one end of the safety electric capacity.
3. device according to claim 2, it is characterised in that the first switch is main contactor, the second switch
For charging contactor.
4. device according to claim 2, it is characterised in that the resistive module includes：In parallel first resistor and the
Two resistance.
5. device according to claim 4, it is characterised in that the first resistor and second resistance are charging resistor.
6. device according to claim 1, it is characterised in that described device also includes：Positioned at first input port and institute
State the fastp-acting fuse between current sensor；
One end of the fastp-acting fuse is connected to one end of the first input port and the voltage sensor, and the other end connects
It is connected to one end of the current sensor.
7. device according to claim 1, it is characterised in that described device also includes：Positioned at the switch element and institute
State the reactor between the first output port；
One end of the reactor is connected to the other end of the switch element and one end of the safety electric capacity, other end connection
To first output port.
8. device according to claim 1, it is characterised in that the first input port, second input port, institute
It is copper bar to state the first output port and second output port.
9. the device according to any one of claim 1-8, it is characterised in that the quantity for controlling circuit is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295911.5A CN107070183A (en) | 2017-04-28 | 2017-04-28 | Current transformer direct current input control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295911.5A CN107070183A (en) | 2017-04-28 | 2017-04-28 | Current transformer direct current input control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107070183A true CN107070183A (en) | 2017-08-18 |
Family
ID=59603730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710295911.5A Pending CN107070183A (en) | 2017-04-28 | 2017-04-28 | Current transformer direct current input control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107070183A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347339A (en) * | 2018-11-20 | 2019-02-15 | 中车大连电力牵引研发中心有限公司 | DC transformer |
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| CN104163117A (en) * | 2013-08-28 | 2014-11-26 | 郑州宇通客车股份有限公司 | Electromobile and electronic control device integration device thereof |
| CN105024575A (en) * | 2015-08-13 | 2015-11-04 | 南京亚派科技股份有限公司 | Subway energy feedback apparatus |
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| CN102413671A (en) * | 2011-12-26 | 2012-04-11 | 天津清源电动车辆有限责任公司 | Water-cooled motor controller for high power density electric vehicle |
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| CN103812371A (en) * | 2012-11-15 | 2014-05-21 | 中国北车股份有限公司 | Auxiliary converter |
| CN103407419A (en) * | 2013-07-11 | 2013-11-27 | 郑州宇通客车股份有限公司 | Electrical accessory integrated control device |
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| CN109347339A (en) * | 2018-11-20 | 2019-02-15 | 中车大连电力牵引研发中心有限公司 | DC transformer |
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