CN106787787A - Electric power electric transformer and rail vehicle power system with control unit - Google Patents
Electric power electric transformer and rail vehicle power system with control unit Download PDFInfo
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- CN106787787A CN106787787A CN201510829647.XA CN201510829647A CN106787787A CN 106787787 A CN106787787 A CN 106787787A CN 201510829647 A CN201510829647 A CN 201510829647A CN 106787787 A CN106787787 A CN 106787787A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The embodiment of the present invention provides a kind of electric power electric transformer and rail vehicle power system with control unit, and the electric power electric transformer with control unit includes：Control unit and electric power electric transformer；Control unit includes：Master controller and N number of sub-controller；Electric power electric transformer includes：Input inductance and N number of power cell；Power cell includes：The H bridgings parallel operation and DC-to-dc DC/DC converters of interconnection, wherein, DC/DC converters include the DC converters, high frequency transformer and the 2nd DC converters that are sequentially connected, main control unit is used to be controlled the general function of electric power electric transformer and the voltage balancing control algorithm of H bridging parallel operations, and each sub-controller is used to be controlled corresponding power cell.For the structure of simplify control unit, it is easy to the maintenance to the electric power electric transformer with control unit.
Description
Technical field
Control unit is carried the present embodiments relate to power electronics control technology field, more particularly to one kind
Electric power electric transformer and rail vehicle power system.
Background technology
In vehicle electrical system, railway power supply grid side provide voltage be about 25 kilovolts (volt,
Abbreviation V), the voltage that locomotive is used about 800V-3000V, therefore, before to locomotive power supply,
Need to carry out transformation to the voltage of grid side by transformer.
At present, the transformer for being used in vehicle electrical system can be electric power electric transformer, electric power
Electronic transformer is generally made up of input inductance and multiple power cells, and each power cell includes multiple
Power electronic devices, overall logic, each power cell by control device to electric power electric transformer
Internal logic and each power electronic devices are controlled, and realize the transformation work(of electric power electric transformer
Energy；In the prior art, generally using a control device to the overall logic of electric power electric transformer,
Each power cell internal logic and each power electronic devices are controlled, and collect in a control device
It is functional into the institute being controlled to electric power electric transformer.
However, because the power electronic devices in electric power electric transformer is more, electric power electric transformer
Overall logic and each power cell internal logic it is complex so that it is integrated right in control device
The control function of electric power electric transformer is more, and control device complex structure, and then cause to control
The later maintenance of device processed brings difficulty.
The content of the invention
The embodiment of the present invention provides a kind of electric power electric transformer and rail vehicle electric power with control unit
System, the structure of simplify control unit is easy to the maintenance to the electric power electric transformer with control unit.
In a first aspect, the embodiment of the present invention provides a kind of electric power electric transformer with control unit, bag
Include：Control unit and electric power electric transformer；
Described control unit includes：Master controller and N number of sub-controller；
The electric power electric transformer includes：Input inductance and N number of power cell；
The power cell includes：The H bridgings parallel operation and DC-to-dc DC/DC converters of interconnection,
Wherein, the DC/DC converters include：The DC converters that are sequentially connected, high frequency transformer with
And the 2nd DC converter, the input of the H bridgings parallel operation is connected with the output end of the input inductance,
The input of the input inductance is connected with the input of electric power electric transformer；
The master controller connects with the input of electric power electric transformer, the output end of electric power electric transformer
Connect；
The master controller is connected with each sub-controller, each sub-controller respectively with corresponding power cell
H bridging parallel operations control end connection, and each sub-controller respectively with corresponding power cell
The input of the DC converters in the control end of DC/DC converters, the DC/DC converters,
The 2nd DC converters in the output end and the DC/DC converters of the first DC converters
Output end connection；
The master controller is used for, and gathers the first voltage signal of the input of the electric power electric transformer
With the first current signal, and gather the electric power electric transformer output end second voltage signal and
Second current signal, according to the first voltage signal, the first current signal, second voltage signal and
Second current signal generates the balance of voltage modulated signal of the H bridging parallel operations of each power cell, and will
The balance of voltage modulated signal is sent to correspondence sub-controller, so that the sub-controller is according to the electricity
Flatten weighing apparatus modulated signal generation H bridge drive signals；
The sub-controller is used for, and the balance of voltage modulated signal sent according to the master controller generates H
Bridge drive signal, and the H bridges drive signal is sent to the control end of H bridging parallel operations；Collection is described
The tertiary voltage signal of the input of a DC converters described in DC/DC converters and described
3rd current signal of the output end of one DC converters, and gather second in the DC/DC converters
4th current signal of the output end of DC converters, according to tertiary voltage signal, the 3rd current signal and
4th current signal generates DC/DC converter drive signals, and the DC/DC converters are driven into letter
Number it is sent to the control end of DC/DC converters.
Electric power electric transformer with control unit as described above, the master controller includes：
Main signal acquisition module, host CPU, N number of principal communication interface；
The input of the main signal acquisition module with the electric power electric transformer, electric power electric transformer
Output end and the host CPU connection, for gathering the first voltage signal, first electric current
Signal, the second voltage signal and second current signal, and by the first voltage signal,
First current signal, the second voltage signal and second current signal are sent to the master
CPU；
The host CPU is connected by the principal communication interface with the sub-controller, for according to described
One voltage signal, the first current signal, second voltage signal and second current signal generate each work(
The balance of voltage modulated signal of the H bridging parallel operations of rate unit, and the balance of voltage modulated signal is corresponding
It is sent to the sub-controller.
Electric power electric transformer with control unit as described above, the master controller also includes：
Main power source module, the main power source module connects with the CPU, main signal acquisition module, principal communication
Mouth connects to be powered.
Electric power electric transformer with control unit as described above, the sub-controller, including：
Sub-signal acquisition module, point CPU, at least three points of communication interfaces；
Input, the institute of the DC converters in the sub-signal acquisition module and DC/DC converters
State the 2nd DC converters in output end, the DC/DC converters of a DC converters output end,
And described point of CPU connection, for gather the tertiary voltage signal, the 3rd current signal and
4th current signal, and by the tertiary voltage signal, the 3rd current signal and described
Four current signals are sent to described point of CPU；
Described point of CPU is used for, according to the tertiary voltage signal, the 3rd current signal and described
4th current signal generates DC/DC converter drive signals；
Described point of CPU is connected by point communication interface with the master controller, for obtaining main control
The balance of voltage modulated signal that device sends, and generate H bridge drive signals according to the balance of voltage modulated signal；
Described point of CPU also by the control end of described point of communication interface and the DC/DC converters and
H bridging parallel operations control end connection, for by described point of communication interface to the DC/DC converters
Control end sends DC/DC converter drive signals, is changed to the H bridgings by described point of communication interface
The control end of device sends H bridge drive signals.
Electric power electric transformer with control unit as described above, the sub-controller also includes：
Independent power source module, the independent power source module and described point of CPU, sub-signal acquisition module, point communicates
Interface connects to be powered.
Electric power electric transformer with control unit as described above, it is right that each sub-controller is respectively arranged at
On the low-voltage module in DC/DC converters in the power cell answered.
Second aspect, the embodiment of the present invention provides a kind of rail vehicle power system, including：Above-mentioned first
Electric power electric transformer with control unit described in any one of aspect and with the power electronics transformation
The traction invertor of the output end connection of device.
Electric power electric transformer and rail vehicle electricity with control unit provided in an embodiment of the present invention
Force system, the electric power electric transformer with control unit includes that electric power electric transformer and control are single
Unit, control unit includes master controller and multiple sub-controllers, by master controller and multiple sub-controllers
The control to electric power electric transformer is realized jointly, and master controller and each sub-controller are respectively to electric power electricity
Disparate modules in sub- transformer are controlled so that integrated control in master controller and each sub-controller
Function processed is less, so master controller and each sub-controller simple structure, it is easy to control
The maintenance of the electric power electric transformer of unit.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing to be used needed for example or description of the prior art is applied to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the application scenarios schematic diagram of electric power electric transformer provided in an embodiment of the present invention；
The structural representation of the electric power electric transformer with control unit that Fig. 2 is provided for the present invention；
Fig. 3 is the annexation schematic diagram between the sub-controller for providing of the invention and power cell；
The internal structure schematic diagram of the master controller that Fig. 4 is provided for the present invention；
The internal structure schematic diagram of the sub-controller that Fig. 5 is provided for the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
Fig. 1 is the application scenarios schematic diagram of electric power electric transformer provided in an embodiment of the present invention, please be joined
According to Fig. 1, the input of the electric power electric transformer 101 is exchanged by pantograph 102 and grid side
Electrical connection, the output end of electric power electric transformer 101 passes through the traction of traction invertor 103 and locomotive
Motor 104 is connected, for being powered to the traction electric machine 104 of locomotive；Electric power electric transformer 101 is wrapped
Input inductance and N number of power cell are included, includes H bridgings parallel operation and DC/DC in each power cell respectively
Converter, DC/DC converters include the DC converters, the high frequency transformer and that are sequentially connected
Two DC converters.Below, using specific embodiment to the electricity with control unit shown in the present invention
Power electronic transformer is described in detail.
The structural representation of the electric power electric transformer with control unit that Fig. 2 is provided for the present invention,
Fig. 2 is refer to, the electric power electric transformer that should carry control unit includes：Control unit 201 and electricity
Power electronic transformer 202；
Control unit 201 includes：Master controller 2011 and N number of sub-controller 2012-1~2012-N；
Electric power electric transformer 202 includes：Input inductance 2022 and N number of power cell
2021-1~2021-N；Wherein, power cell includes：H bridging the parallel operations A and DC/DC of interconnection
Converter B, wherein, DC/DC converters B includes the DC converters, the high frequency that are sequentially connected
Transformer and the 2nd DC converters, the input of H bridging parallel operations and the output of input inductance 2022
End is connected, and the input for being input into inductance 2022 is connected with the input of electric power electric transformer；This area
Technical staff is it is understood that the input of input inductance 2022 is electric power electric transformer 202
Input.
The output of the input, electric power electric transformer of master controller 2011 and electric power electric transformer
End connection；Master controller 2011 is connected with each sub-controller, each sub-controller respectively with corresponding work(
H bridging parallel operations in rate unit control end connection, and each sub-controller respectively with corresponding power
DC converters in control end, the DC/DC converters of the DC/DC converters in unit it is defeated
Enter the 2nd DC converters in end, the output end of a DC converters and DC/DC converters
Output end connection (being to show sub-controller with the annexation of corresponding power cell in Fig. 2)；
Master controller 2011 is used for, and gathers the first voltage signal of the input of electric power electric transformer
With the first current signal, and the second voltage signal and of the output end of electric power electric transformer is gathered
Two current signals, according to first voltage signal, the first current signal, second voltage signal and second
Current signal generates the balance of voltage modulated signal of the H bridging parallel operations of each power cell, and voltage is put down
Weighing apparatus modulated signal correspondence is sent to sub-controller, so that sub-controller is given birth to according to balance of voltage modulated signal
Into H bridge drive signals；
Sub-controller is used for, and the balance of voltage modulated signal sent according to master controller 2011 generates H
Bridge drive signal, and H bridge drive signals are sent to the control end of H bridging parallel operations；Collection DC/DC
The tertiary voltage signal of the input of a DC converters and a DC converters in converter
3rd current signal of output end, and gather the output end of the 2nd DC converters in DC/DC converters
The 4th current signal, according to tertiary voltage signal, the 3rd current signal and the 4th current signal generate
DC/DC converter drive signals, and the DC/DC converters drive signal is sent to DC/DC changes
The control end of parallel operation.
Annexation between not shown sub-controller and power cell in fig. 2, below, by figure
3 show the annexation between a sub-controller and corresponding power cell in control unit.
Fig. 3 is the annexation schematic diagram between the sub-controller for providing of the invention and power cell, please
According to Fig. 3, H bridgings parallel operation 302 and DC/DC converters 303 constitute a power cell, wherein
DC/DC converters include：A DC converters, high frequency transformer and the 2nd DC being sequentially connected
Converter.
Sub-controller 301 is connected with the control end of H bridgings parallel operation 302, for H bridging parallel operations
302 control end sends H bridge drive signals, and H bridgings parallel operation is realized by H bridges drive signal
Control.
Sub-controller 301 also with DC/DC converters 303 in a DC converters input
Connection, the tertiary voltage signal for gathering a DC converter inputs, also becomes with a DC
The output end connection of parallel operation, the 3rd current signal for gathering a DC converter output terminals, also
Output end with the 2nd DC converters is connected, and the of the input for gathering the 2nd DC converters
Four current signals；Control end of the sub-controller 301 also with DC/DC converters 303 is connected (Fig. 3
Not shown in), driven for sending DC/DC converters to the control end of DC/DC converters 303
Signal, realizes controlling by DC/DC converters drive signal to DC/DC converters；Need explanation
, the control end of DC/DC converters is separately positioned on a DC converters and the 2nd DC is converted
On device.
Below, to the master controller and the work of sub-controller in control unit in embodiment illustrated in fig. 2
It is described in detail as process.
For the master controller in control unit：
Control unit includes a master controller, and the master controller is used for electric power electric transformer
General function is controlled, for example, the startup for performing electric power electric transformer is controlled, protection is controlled,
Redundant Control and failure safe are oriented to control, vehicle bus are carried out with network communication and is uniformly controlled
Deng.
During implementing, master controller is needed according to the electric power electric transformer for collecting
Electric signal (voltage signal and current signal of the input of electric power electric transformer, and electric power electricity
The voltage signal and current signal of sub- transformer output end) perform H bridging parallel operations in each power cell
Balance of voltage algorithm, and H bridging parallel operations are controlled by sub-controller, specifically：Master control
Device processed is connected by voltage sensor and current sensor with the input of electric power electric transformer, is passed through
The first voltage signal of the input of voltage sensor collection electric power electric transformer, by current sense
First current signal of the input of device collection electric power electric transformer, wherein first voltage signal are friendship
Stream voltage signal, the first current signal is ac current signal, and master controller also passes through voltage sensor
It is connected with the output end of electric power electric transformer with current sensor, electric power is gathered by voltage sensor
The second voltage signal of electronic transformer output end, electric power electric transformer is gathered by current sensor
Second current signal of output end, the second voltage signal is d. c. voltage signal, second electric current letter
Number be DC current signal, master controller according to collect first voltage signal, the first electric current believe
Number, second voltage signal and the second current signal perform the balance of voltage control of H bridges in each power cell
Algorithm processed, generates the balance of voltage modulated signal of H bridging parallel operations in each power cell, and by H bridges
The balance of voltage modulated signal correspondence of converter is sent to sub-controller, so as to obtain sub-controller according to H
The balance of voltage modulated signal of bridging parallel operation is controlled to H bridging parallel operations.
It should be noted that master controller can also gather other electric letters of electric power electric transformer
Number, such as ground signalling of electric power electric transformer, in actual application, can be according to reality
Collection obtains the electric signal of electric power electric transformer.
For the sub-controller in control unit：
Control unit includes multiple sub-controllers, in each sub-controller and electric power electric transformer
Power cell has one-to-one relationship, and each sub-controller is carried out to corresponding power cell respectively
Control, for example, to power cell internal logic control, protection control etc..
During implementing, sub-controller is realized to the H bridges in power cell in the following way
Converter is controlled：Sub-controller respectively with the control of the H bridging parallel operations in corresponding power cell
End connection, the balance of voltage that the H bridging parallel operations of master controller transmission are received in sub-controller modulates letter
After number, H bridge drive signals are generated according to balance of voltage modulated signal, and to the H in power cell
The control end of bridging parallel operation sends H bridge drive signals, by H bridges drive signal to H bridging parallel operations
It is controlled；Optionally, H bridges drive signal can be H bridge pulse width modulations (Pulse-Width
Modulation, abbreviation PWM) driving pulse.
Sub-controller is realized being controlled the DC/DC converters in power cell in the following way：
The input that sub-controller passes through the DC converters in voltage sensor and DC/DC converters
Connection, the tertiary voltage signal of the input of a DC converters is gathered by voltage sensor；Point
Controller is connected by the output end of the DC converters in current sensor and DC/DC converters
Connect, the 3rd current signal of the output end of a DC converters is gathered by current sensor；Sub-control
Device processed is also connected by the output end of the 2nd DC converters in current sensor and DC/DC converters
Connect, the 4th current signal of the output end of the 2nd DC converters is gathered by current sensor；Sub-control
Device processed after tertiary voltage signal, the 3rd current signal and the 4th current signal is obtained, according to the 3rd
Voltage signal, the 3rd current signal and the 4th current signal perform DC/DC convertor controls algorithms,
Generation DC/DC converter drive signals；Control end of the sub-controller also with DC/DC converters is connected,
For after iversion controller generation DC/DC converter drive signals, by DC/DC converter drive signals
Send to the control end of DC/DC converters, by DC/DC converter drive signals to DC/DC
Converter is controlled；Optionally, DC/DC converters drive signal can be PWM driving pulses.
In the embodiment shown in Figure 2, the control unit to electric power electric transformer includes master controller
With multiple sub-controllers, realized to electric power electric transformer jointly by master controller and multiple sub-controllers
Control, master controller and each sub-controller are carried out to the disparate modules in electric power electric transformer respectively
Control so that integrated control function is less in master controller and each sub-controller, and then master controller
And the simple structure of each sub-controller, it is easy to the dimension of the electric power electric transformer with control unit
Shield, and improve the stability of the electric power electric transformer with control unit；Further, due to
In being dispersed in master controller and each sub-controller to the control function of electric power electric transformer, reduce
The quantity of the communication interface in master controller and sub-controller, reduces electric power electric transformer and master
Cabling difficulty between controller and each sub-controller, meanwhile, in use, work as power electronics
When transformer breaks down, it is easy to fault point.
Below, the internal structure of master controller and sub-control is carried out specifically by specific embodiment
It is bright, specifically, refer to the embodiment shown in Fig. 4 and Fig. 5.
The internal structure schematic diagram of the master controller that Fig. 4 is provided for the present invention, refer to Fig. 4, the master
Controller can include：Main signal acquisition module 401, host CPU 402, N number of principal communication interface 403；
The input of main signal acquisition module 401 and electric power electric transformer, electric power electric transformer
Output end and host CPU 402 are connected, for gathering first voltage signal, the first current signal,
Two voltage signals and the second current signal, and by first voltage signal, the first current signal, second
Voltage signal and the second current signal are sent to host CPU 402；
Host CPU 402 is connected by principal communication interface 403 with sub-controller, for according to first voltage
Signal, the first current signal, second voltage signal and the second current signal generate each power cell
The balance of voltage modulated signal of H bridging parallel operations, and balance of voltage modulated signal correspondence is sent to sub-control
Device processed.
In the embodiment shown in fig. 4, optionally, in order to improve between master controller and sub-controller
The security and agility of data interaction, principal communication interface 403 can be fiber optic data communication interface, in reality
Can enter 2 optical fiber for going out by 2 in the application process of border, between master controller and each sub-controller is carried out
Data communication, while electrical isolation can also be realized.
In actual application, can be powered to master controller by independent current source, specifically, main
Controller can also include main power source module, the power module and host CPU, main signal acquisition module,
Principal communication interface connects to be powered；External input voltage can be converted into master by the main power source module
Signal acquisition module 401, host CPU 402 and the required voltage of principal communication interface 403, for example,
The direct current 110V voltage conversions that will be input into are the voltages such as+15V, -15V, 5V, and to master controller
In modules power.Of course, it is possible to pass through external power source be powered to master controller, this hair
It is bright that this is not especially limited.
Further, in the embodiment shown in fig. 4, master controller can also be input into including digital quantity
Module, digital output module, digital quantity input module are used to obtain main circuit breaker feedback, charging
Tentaculum feedback, main contactor feed back and isolate contactor feedback etc. between each sub-controller；Number
Word amount output module be used for main circuit breaker of railway engine, charging contactor, main contactor and with each sub-control
Isolation contactor between device processed etc. is controlled；Further, in order to realize master controller to locomotive
Control, the communication module that is communicated with locomotive can also be included in master controller.
The internal structure schematic diagram of the sub-controller that Fig. 5 is provided for the present invention, refer to Fig. 5, this point
Controller can include：Sub-signal acquisition module 501, point CPU502, at least three points of communications connect
Mouth 503；
The input of the DC converters in sub-signal acquisition module 501 and DC/DC converters,
The output end of the 2nd DC converters in output end, the DC/DC converters of the first DC converters, with
And point CPU connections, for gathering tertiary voltage signal, the 3rd current signal and the 4th current signal,
And send to a point CPU 502 tertiary voltage signal, the 3rd current signal and the 4th current signal；
Dividing CPU502 is used for, and is believed according to tertiary voltage signal, the 3rd current signal and the 4th electric current
Number generation DC/DC converter drive signals；
CPU502 is divided to be connected with master controller by a point communication interface 503, for obtaining master controller
The balance of voltage modulated signal of transmission, and generate H bridge drive signals according to balance of voltage modulated signal；
Divide CPU502 by point communication interface 503 and the control end and H bridges of DC/DC converters
The control end connection of converter, for being sent out to the control end of DC/DC converters by point communication interface
DC/DC converter drive signals are sent, is sent to the control end of H bridging parallel operations by point communication interface
H bridge drive signals.
In the embodiment shown in fig. 5, the communication interface for being communicated with master controller in sub-controller,
And it is different from the effect of the communication interface that H bridgings parallel operation, DC/DC converters are communicated, in reality
In the application process of border, can be using the communication interface of same type, it would however also be possible to employ different types of logical
Letter interface；Preferably, the communication interface 503 for being communicated with main controller in sub-controller can be light
Fiber communication interface, sub-controller and master controller and can enter 2 optical fiber for going out by 2 and carry out data
Communication.
In actual application, can be powered to sub-controller by independent current source, specifically, point
Controller can also include independent power source module, independent power source module and a point CPU, sub-signal acquisition module,
The connection of point communication interface is being powered；External input voltage can be changed composition by the independent power source module
Signal acquisition module 501, point CPU502, point required voltage of communication interface 503, for example, will
The direct current 110V voltage conversions of input are the voltages such as+15V, -15V, 5V, and in sub-controller
Modules power.Of course, it is possible to pass through external power source be powered to sub-controller, the present invention
This is not especially limited.
Further, in the embodiment shown in fig. 4, sub-controller can also be input into including digital quantity
Module, digital output module, digital quantity input module are anti-for obtaining power cell isolation contactor
Feedback, digital output module is used to control power cell to isolate contactor.
In the above-described embodiments, for the ease of the installation and design of master controller and each sub-controller,
Master controller can be casing structure, and independent warehouse, each sub-control are reserved in electric power electric transformer
Device processed is single plate structure, further, in order to ensure the insulating properties of each sub-controller, can respectively
Sub-controller is respectively arranged on the low-voltage module in the DC/DC converters in corresponding power cell,
Because the DC converters in DC/DC converters are high-pressure modular, the 2nd DC converters are low
, in actual application, can be arranged on sub-controller in DC/DC converters by die block
On 2nd DC converters.
The embodiment of the present invention also provides a kind of rail vehicle power system, including：Any of the above-described embodiment
The described electric power electric transformer with control unit and the output end with electric power electric transformer
The traction invertor of connection.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than
It is limited；Although being described in detail to the present invention with reference to foregoing embodiments, this area
Those of ordinary skill should be understood：It can still enter to the technical scheme described in foregoing embodiments
Row modification, or equivalent is carried out to which part or all technical characteristic；And these modification or
Person replaces, and does not make the model of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (7)
1. a kind of electric power electric transformer with control unit, it is characterised in that including：Control unit
And electric power electric transformer；
Described control unit includes：Master controller and N number of sub-controller；
The electric power electric transformer includes：Input inductance and N number of power cell；
The power cell includes：The H bridgings parallel operation and DC-to-dc DC/DC converters of interconnection,
Wherein, the DC/DC converters include：The DC converters that are sequentially connected, high frequency transformer with
And the 2nd DC converter, the input of the H bridgings parallel operation is connected with the output of the input inductance,
The input of the input inductance is connected with the input of electric power electric transformer；
The master controller connects with the input of electric power electric transformer, the output end of electric power electric transformer
Connect；
The master controller is connected with each sub-controller, each sub-controller respectively with corresponding power cell
H bridging parallel operations control end connection, and each sub-controller respectively with corresponding power cell
The input of the DC converters in the control end of DC/DC converters, the DC/DC converters,
The 2nd DC converters in the output end and the DC/DC converters of the first DC converters
Output end connection；
The master controller is used for, and gathers the first voltage signal of the input of the electric power electric transformer
With the first current signal, and gather the electric power electric transformer output end second voltage signal and
Second current signal, according to the first voltage signal, the first current signal, second voltage signal and
Second current signal generates the balance of voltage modulated signal of the H bridging parallel operations of each power cell, and will
The balance of voltage modulated signal is sent to correspondence sub-controller, so that the sub-controller is according to the electricity
Flatten weighing apparatus modulated signal generation H bridge drive signals；
The sub-controller is used for, and the balance of voltage modulated signal sent according to the master controller generates H
Bridge drive signal, and the H bridges drive signal is sent to the control end of H bridging parallel operations；Collection is described
The tertiary voltage signal of the input of a DC converters described in DC/DC converters and described
3rd current signal of the output end of one DC converters, and gather second in the DC/DC converters
4th current signal of the output end of DC converters, according to tertiary voltage signal, the 3rd current signal and
4th current signal generates DC/DC converter drive signals, and the DC/DC converters are driven into letter
Number it is sent to the control end of DC/DC converters.
2. transformer according to claim 1, it is characterised in that the master controller includes：
Main signal acquisition module, host CPU, N number of principal communication interface；
The input of the main signal acquisition module with the electric power electric transformer, electric power electric transformer
Output end and the host CPU connection, for gathering the first voltage signal, first electric current
Signal, the second voltage signal and second current signal, and by the first voltage signal,
First current signal, the second voltage signal and second current signal are sent to the master
CPU；
The host CPU is connected by the principal communication interface with the sub-controller, for according to described
One voltage signal, the first current signal, second voltage signal and second current signal generate each work(
The balance of voltage modulated signal of the H bridging parallel operations of rate unit, and the balance of voltage modulated signal is corresponding
It is sent to the sub-controller.
3. transformer according to claim 2, it is characterised in that the master controller, also includes：
Main power source module, the power module connects with the host CPU, main signal acquisition module, principal communication
Mouth connects to be powered.
4. the transformer according to any one of claims 1 to 3, it is characterised in that the sub-control system
Device, including：
Sub-signal acquisition module, point CPU, at least three points of communication interfaces；
Input, the institute of the DC converters in the sub-signal acquisition module and DC/DC converters
State the 2nd DC converters in output end, the DC/DC converters of a DC converters output end,
And described point of CPU connection, for gather the tertiary voltage signal, the 3rd current signal and
4th current signal, and by the tertiary voltage signal, the 3rd current signal and described
Four current signals are sent to described point of CPU；
Described point of CPU is used for, according to the tertiary voltage signal, the 3rd current signal and institute
State the 4th current signal generation DC/DC converter drive signals；
Described point of CPU is connected by point communication interface with the master controller, for obtaining main control
The balance of voltage modulated signal that device sends, and generate H bridge drive signals according to the balance of voltage modulated signal；
Described point of CPU also by the control end of described point of communication interface and the DC/DC converters and
H bridging parallel operations control end connection, for by described point of communication interface to the DC/DC converters
Control end sends DC/DC converter drive signals, is changed to the H bridgings by described point of communication interface
The control end of device sends H bridge drive signals.
5. transformer according to claim 4, it is characterised in that the sub-controller, also includes：
Independent power source module, the independent power source module and described point of CPU, sub-signal acquisition module, point communicates
Interface connects to be powered.
6. the transformer according to any one of claims 1 to 3, it is characterised in that each sub-controller
It is respectively arranged on the low-voltage module in the DC/DC converters in corresponding power cell.
7. a kind of rail vehicle power system, it is characterised in that including：It is such as any in claim 1~6
The electric power electric transformer with control unit described in and the output with the electric power electric transformer
Hold the traction invertor of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510829647.XA CN106787787A (en) | 2015-11-24 | 2015-11-24 | Electric power electric transformer and rail vehicle power system with control unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510829647.XA CN106787787A (en) | 2015-11-24 | 2015-11-24 | Electric power electric transformer and rail vehicle power system with control unit |
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| CN106787787A true CN106787787A (en) | 2017-05-31 |
Family
ID=58964439
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510829647.XA Pending CN106787787A (en) | 2015-11-24 | 2015-11-24 | Electric power electric transformer and rail vehicle power system with control unit |
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| CN110890845A (en) * | 2019-12-06 | 2020-03-17 | 中车大连电力牵引研发中心有限公司 | Cascade output current-sharing control method for power electronic transformer of high-speed rail train |
| CN113555957A (en) * | 2020-04-24 | 2021-10-26 | 南京南瑞继保电气有限公司 | Power electronic converter coordination control system and control method thereof |
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