CN106602889A - Power supply device and power transfer device - Google Patents
Power supply device and power transfer device Download PDFInfo
- Publication number
- CN106602889A CN106602889A CN201611124282.1A CN201611124282A CN106602889A CN 106602889 A CN106602889 A CN 106602889A CN 201611124282 A CN201611124282 A CN 201611124282A CN 106602889 A CN106602889 A CN 106602889A
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- Prior art keywords
- power
- electric energy
- module
- electric
- power supply
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention relates to a power supply device and a power transfer device. The power transfer device comprises a power supply device for providing power for a control system of the power transfer device; the power supply device comprises an external power supply module and a self-power taking module; the external power supply module is in power supply connection with a DC bus capacitor; the self-power taking module takes power from the DC bus capacitor; and the taken power is supplied to the control system. Firstly, when the power transfer device is not put to a power grid, if the control system still needs reliable power supply, the external power supply module can provide power for the control system; when the external power supply module is power-off due to sudden failure, power is taken from the DC bus capacitor and the control system can still work reliably; and thus, when the above two conditions appear, the power supply device can ensure reliable power supply, and the power supply reliability of the power supply device is high.
Description
Technical field
The present invention relates to a kind of electric supply installation and a kind of power circulation device.
Background technology
In recent years, due to the change and the quickening of energy resource consumption speed of environment, the efficiency of the railway transportation energy is had more
High requirement.With the increase of railway transportation capacity, need the power supply capacity of the railway system also increasing, it is therefore desirable to increase
The power supply capacity of railway power system.
Railway power supply contact net to the direction of remote, Large Copacity and complication is developed, and the loading index of electric locomotive is in
Existing relatively random and perceptual Changing Pattern, causes the fundamental current corresponding to electric locomotive to lag behind voltage certain angle,
Meanwhile, by relevant devices such as transformer, traction electric machines there is Nonlinear Adjustment functional factor to be affected, cause electric locomotive
Electric current be contained within a certain proportion of harmonic components.Power circulation device can stablize railway power system voltage, compensation system
Harmonic wave, improve power quality and improve power supply reliability, thus power circulation device in railway power system should
With more and more extensive.
In order to ensure that power circulates the normal operation of device, it is desirable to have special control system controlling it, and
And, in order to ensure that power circulates the reliability service of device, it is desirable to have special current supply circuit to control system carrying out reliable confession
Electricity.At present, we have automatic electricity getting and take outward when the control system for circulating rating of set module to existing power is powered
Electric 2 kinds of ways to take power.
As shown in figure 1, automatic electricity getting is directly from power taking on the bus capacitor of power model.Power circulates rating of set module
Exchange end on electricity after, after the rectification of the IGBT anti-paralleled diodes in power model to bus capacitor C charging.Pass through
The electric energy of bus capacitor C is converted into Switching Power Supply the electric energy of control system needs, to Control card and driving power supply.But,
Exchange end powered on moment can bring very big impact to bus capacitor C, it is therefore desirable to increase current-limiting resistance to limit dash current,
In the starting stage, that is, when starting to be charged for bus capacitor C, KM1 is to disconnect, and by current-limiting resistance electric current is limited；Work as bus
KM1 is closed after electric capacity C charging completes, current-limiting resistance is bypassed.This way to take power causes device due to increased contactor KM1
Cost increases, and to control the closure of KM1, causes the control of module more complicated；Furthermore, it is desirable to circulate device to power
Just have electric energy after being charged in control system, control system could normal work, the power supply of this power supply sequencing can
It is poor by property, when needing control system to detect power model, may now avoid the need for power circulation device input
To in electrical network, also just power model cannot be detected just without electric energy in control system in this case.
As shown in Fig. 2 outer power taking is AC220V the or AC380V power takings from external electrical network, by Switching Power Supply to control panel
Card and driving power supply.This way to take power low cost, it is not required that the control loop control contactor closure of power model, but
When device is circulated in normal operation, when causing external electrical network AC220V or AC380V power down due to catastrophic failures such as short circuits,
Just cannot power for control system, and then the normal break-make of power model in device is circulated with regard to uncontrollable power, so, the confession
Power supply reliability electrically is poor.And, while control system dead electricity, the two ends of the power model in circulation device are still
Voltage is loaded with, so, it is not only possible to cause the related device for circulating device to damage, it is also possible to cause one to railway power system
It is fixing to ring.
The content of the invention
It is an object of the invention to provide a kind of electric supply installation, powering to the method for supplying power to for solving traditional control system can
By the problem that property is poor.Present invention simultaneously provides a kind of power circulates device.
For achieving the above object, the solution of the present invention includes a kind of electric supply installation, including externally fed module and automatic electricity getting
Module, the externally fed module is used for for electrical connection dc-link capacitance, is that dc-link capacitance charges；The automatic electricity getting mould
Block is used for the power taking from dc-link capacitance, and the electric energy of taking-up is powered for external electric equipment.
The externally fed module includes the external power source port for connecting external power source, and the external power source port is defeated
Go out the first electric energy processing unit of connection, the first electric energy processing module is used for for electrical connection dc-link capacitance.
The external power source is alternating current, and the first electric energy processing unit is rectifier bridge.
String is provided with current-limiting resistance on connection line between the external power source port and rectifier bridge.
The automatic electricity getting module includes the second electric energy processing unit, from the electric energy of electric energy Jing second that dc-link capacitance takes out
External electric equipment is supplied after the process of processing unit.
A kind of power circulates device, described including the electric supply installation for powering for the control system of power circulation device
Electric supply installation includes externally fed module and automatic electricity getting module, and the externally fed module for power supply connects dc-link capacitance, is
Dc-link capacitance charges；The automatic electricity getting module is used for the power taking from dc-link capacitance, and the electric energy of taking-up is control system
Power supply.
The externally fed module includes the external power source port for connecting external power source, and the external power source port is defeated
Go out the first electric energy processing unit of connection, the first electric energy processing module is for electrical connection dc-link capacitance.
The external power source is alternating current, and the first electric energy processing unit is rectifier bridge.
String is provided with current-limiting resistance on connection line between the external power source port and rectifier bridge.
The automatic electricity getting module includes the second electric energy processing unit, from the electric energy of electric energy Jing second that dc-link capacitance takes out
Supply control system after the process of processing unit.
The electric supply installation that the present invention is provided can be that the control system of power circulation device is powered, it is of course also possible to be it
The control system of the converter plant that he is made up of power model is powered, and the electric supply installation is widely used.
First, the electric supply installation includes externally fed module and automatic electricity getting module two parts, either under initial situation also
It is in running, even if power circulation device is not put in electrical network, i.e., not work, if external electric equipment, to control
As a example by system processed, reliable power supply is still required for, then, can think that control system is powered by externally fed module；When due to
Catastrophic failure and when causing externally fed module power down, the power taking on dc-link capacitance by automatic electricity getting module, the electricity of taking-up
Just can power for control system, control system can still keep reliably working.So, when there are above-mentioned several situations, should
Electric supply installation ensure that reliable power supply, therefore the power supply reliability of the electric supply installation is higher.And, power circulation device is just
Often connection is not turned off between externally fed module and bus capacitor during operation, then, when circulation device is in normal course of operation
During the unexpected power down of main circuit of circulation device, although circulation device cannot power again for bus capacitor, but, externally fed module
Control system can be still continuously electric energy is provided, it is ensured that the uninterrupted power supply of control system.
In addition, in the starting stage, externally fed module is bus capacitor charging, will possess certain on such bus capacitor
Voltage, then, exchange end powered on moment, the voltage difference between the DC side and bus capacitor of power model would not be very
Greatly, larger impact also would not be brought to bus capacitor, therefore the electric supply installation can reduce the impact to bus capacitor, drop
The low damage to bus capacitor, also, without current-limiting resistance is increased limiting dash current, reduce cost.
Description of the drawings
Fig. 1 is automatic electricity getting principle schematic；
Fig. 2 is externally fed principle schematic；
Fig. 3 is power circulation device main circuit structure schematic diagram；
Fig. 4 is the principle schematic of the electric supply installation that the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described in detail.
Power circulates device embodiment
The power circulation device that the present embodiment is provided also includes for power in addition to comprising power circulation device main circuit
The electric supply installation that the control system of circulation device main circuit is powered.
Wherein, as shown in figure 3, power circulation device main circuit includes side transformer in parallel, the former limit connection of the transformer
Electrical network A, the transformer has multiple vice-side windings, and each vice-side winding is all connected with power model, the other end cascade of each power model
Arrange, and electrical network B is connected by transformer.Power model is made up of two H-bridge circuits and bus capacitor C.
Bus capacitor C power taking of the electric supply installation of power circulation device from any one power model.The electric supply installation
Mainly include two parts, be respectively externally fed part and automatic electricity getting part, wherein, externally fed part is for electric connecting busbar electricity
Hold C, Main Function is for bus capacitor charging；The Main Function of automatic electricity getting part is from power taking on bus capacitor C, the electricity of taking-up
The control system that device can be circulated for power is powered.
Externally fed part includes external power source port and electric energy processing unit, and external power source port connects external power source,
The output of external power source port connects the electric energy processing unit, and the electric energy processing module is for electrical connection bus capacitor C.Due to outside confession
Electric part can charge for bus capacitor C, so the electric energy of its output is direct current, therefore, the externally fed part input
Electric energy can be direct current, i.e. the external power source of external power source port connection is dc source, then, electric energy processing unit can
Can be DC voltage booster circuit or direct-current voltage reducing circuit；Or, the electric energy of the externally fed part input is alternating current, i.e., outside
The external power source of power port connection is AC network, then, electric energy processing unit is exactly rectification circuit；Again or, outside supply
Electric part is directly just DC power transmission line, and the two ends of DC power transmission line connect respectively dc source and bus capacitor C, is realized
Galvanic transmission.
As shown in figure 4, providing a kind of specific embodiment of externally fed part in the electric supply installation.Externally fed part
Including the power port of connection AC220V or AC380V, the power port exports the primary side winding of connection transformer, secondary around
Group connects rectifier bridge by current-limiting resistance R, and the DC side of the rectifier bridge connects the two ends of bus capacitor C.External AC 220V or
After AC380V electric energy is by transformer isolation and boosting, then by current-limiting resistance R and rectifier bridge to the bus in power model
Electric capacity C charges.In addition, if rectifier bridge is if controllable rectifier bridge, the galvanic magnitude of voltage of the externally fed part output
Can be adjusted according to actual needs, therefore, when charging for bus capacitor C, in order to further avoid that punching is caused to electric capacity C
Hit, when just having started to be charged for electric capacity C, then the galvanic voltage of rectifier bridge output can slowly be raised again with smaller.
Automatic electricity getting part includes power taking port, and the power taking port connects the two ends of bus capacitor C, and the power taking port can be with
Directly the electric energy of taking-up is transferred to into control system, is used for control system；But, generally, the electric energy of taking-up may
Do not match that with the supply voltage of control system, so, it is impossible to directly use, but by the electric energy for taking out by an electric energy
Reuse after the process of reason unit.The electric energy processing unit is generally Switching Power Supply, certainly, is also not excluded for others
Equipment, such as conventional DC voltage booster circuit or reduction voltage circuit, because Switching Power Supply belongs to routine techniques, its physical circuit knot
Structure and operation principle belong to prior art, just no longer illustrate here.
As shown in figure 4, after external AC 220V or AC380V electric energy are by transformer isolation and boosting, then by current limliting electricity
Resistance R and rectifier bridge charge to the bus capacitor C in power model, and bus capacitor C voltage is increased to the startup voltage of Switching Power Supply
Afterwards, the control system of power model starts normal operation, then controls again to circulate the energization of device main circuit, i.e. control circulation dress
Put and put in electrical network.First external AC 220V or AC380V charge to bus capacitor C, possess certain electricity on bus capacitor C
Circulating in device main circuit after pressure just has electric current, and the voltage difference between the DC side and bus capacitor C of such power model is just
Will not be very big, it is possible to avoid the exchange end powered on moment in circulation rating of set module that larger punching is brought to bus capacitor C
Hit；Further, also require rectifier bridge and exchange end more than power model for the voltage on bus capacitor C after bus capacitor C chargings
The magnitude of voltage (DC voltage for being obtained by the diode rectification in power model) of voltage natural commutation, such power model is handed over
Stream terminal voltage more will not be impacted to bus capacitor C；Also, the current-limiting resistance R in externally fed part also can be played
The effect of the impact that certain reduction external AC 220V or AC380V is caused to bus capacitor C.In addition, in order to ensure bus electricity
Hold C normal works, from the infringement of overvoltage, the output voltage of rectifier bridge is less than power model bus electricity in externally fed part
Hold the rated operational voltage of C.
Power circulation device is when normally running, automatic electricity getting part from power taking in bus capacitor C so that control system is used, this
When, although externally fed part also electrically connects with bus capacitor C, it is equivalently employed without output.Even and if bus capacitor
Voltage C is more than the DC voltage that external AC 220V or AC380V are produced after rectifier bridge, due to commutation diode in rectifier bridge
Effect, the voltage of bus capacitor C will not impact in turn to outside power pack, now, without electricity on current-limiting resistance R
Stream passes through, and would not persistently consume electric energy.
Since in addition, when power circulation device normally runs the company of not turning off between externally fed part and bus capacitor C
Connect, then, when the unexpected power down of circulation device main circuit in normal course of operation, although circulation device cannot be bus capacitor
C powers, but, externally fed part can just be continuously the control system of power model and provide electric energy, it is ensured that control system
Uninterrupted power supply.
Electric supply installation embodiment
Electric supply installation in the present embodiment can be that the control system that power is circulated in device is powered, and specifically implement as described above
Described in example, it is of course also possible to the control system for other power models is powered, such as the control system of MMC transmission systems is female
Line capacitance is the electric capacity on the dc bus in MMC.Also it is exactly that in addition to powering for control system, the electric supply installation is also
Can power for other kinds of electrical equipment in electrical network, such as：It is used to detect the testing equipment of power grid state information in electrical network.
Although described in background technology is the power taking situation of the control system in power circulation device, it is intended merely to draw existing
Defect in technology, does not cause any restriction to the application of electric supply installation.
Due to being made that in detail to the structure and the course of work of the electric supply installation in above-mentioned power circulation device embodiment
Carefully describe, the present embodiment is just repeated no more.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, and for those of ordinary skill in the art, various changes are designed in teaching of the invention
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
Change, modification, replacement and the modification that embodiment is carried out is still fallen within protection scope of the present invention.
Claims (10)
1. a kind of electric supply installation, it is characterised in that including externally fed module and automatic electricity getting module, the externally fed module is used
It is that dc-link capacitance charges in for electrically connecting dc-link capacitance；The automatic electricity getting module is used for from dc-link capacitance
Power taking, the electric energy of taking-up is powered for external electric equipment.
2. electric supply installation according to claim 1, it is characterised in that the externally fed module is included for connecting outside
The external power source port of power supply, the external power source port output first electric energy processing unit of connection, first electric energy is processed
Module is used for for electrical connection dc-link capacitance.
3. electric supply installation according to claim 2, it is characterised in that the external power source is alternating current, and described first is electric
Energy processing unit is rectifier bridge.
4. electric supply installation according to claim 3, it is characterised in that the company between the external power source port and rectifier bridge
String is provided with current-limiting resistance on link.
5. electric supply installation according to claim 1, it is characterised in that it is single that the automatic electricity getting module includes that the second electric energy is processed
Unit, after the process of electric energy Jing the second electric energy processing units taken out from dc-link capacitance external electric equipment is supplied.
6. a kind of power circulates device, it is characterised in that include the power supply that the control system for circulating device for power is powered
Device, the electric supply installation includes externally fed module and automatic electricity getting module, and the externally fed module for power supply connection direct current is female
Line capacitance, is that dc-link capacitance charges；The automatic electricity getting module is used for the power taking from dc-link capacitance, and the electric energy of taking-up is
Control system is powered.
7. power according to claim 6 circulates device, it is characterised in that the externally fed module is included for connecting
The external power source port of external power source, the external power source port output first electric energy processing unit of connection, first electric energy
Processing module is for electrical connection dc-link capacitance.
8. power according to claim 7 circulates device, it is characterised in that the external power source is alternating current, and described the
One electric energy processing unit is rectifier bridge.
9. power according to claim 8 circulates device, it is characterised in that between the external power source port and rectifier bridge
Connection line on string be provided with current-limiting resistance.
10. power according to claim 6 circulates device, it is characterised in that the automatic electricity getting module includes the second electric energy
Processing unit, supply control system after the process of electric energy Jing the second electric energy processing units taken out from dc-link capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124282.1A CN106602889A (en) | 2016-12-08 | 2016-12-08 | Power supply device and power transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124282.1A CN106602889A (en) | 2016-12-08 | 2016-12-08 | Power supply device and power transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106602889A true CN106602889A (en) | 2017-04-26 |
Family
ID=58598688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611124282.1A Pending CN106602889A (en) | 2016-12-08 | 2016-12-08 | Power supply device and power transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106602889A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014054141A (en) * | 2012-09-10 | 2014-03-20 | Ricoh Co Ltd | Power supply device and power supply system |
| CN204156719U (en) * | 2014-11-13 | 2015-02-11 | 株洲南车时代电气股份有限公司 | Voltage type converter pre-charge circuit |
| CN105216637A (en) * | 2015-10-21 | 2016-01-06 | 唐山轨道客车有限责任公司 | Motor train unit electric power system, external method of supplying power to and motor train unit |
-
2016
- 2016-12-08 CN CN201611124282.1A patent/CN106602889A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014054141A (en) * | 2012-09-10 | 2014-03-20 | Ricoh Co Ltd | Power supply device and power supply system |
| CN204156719U (en) * | 2014-11-13 | 2015-02-11 | 株洲南车时代电气股份有限公司 | Voltage type converter pre-charge circuit |
| CN105216637A (en) * | 2015-10-21 | 2016-01-06 | 唐山轨道客车有限责任公司 | Motor train unit electric power system, external method of supplying power to and motor train unit |
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Application publication date: 20170426 |
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