CN108768147A - A kind of attachment device between MMC bridge arms control system and submodule - Google Patents
A kind of attachment device between MMC bridge arms control system and submodule Download PDFInfo
- Publication number
- CN108768147A CN108768147A CN201810670783.2A CN201810670783A CN108768147A CN 108768147 A CN108768147 A CN 108768147A CN 201810670783 A CN201810670783 A CN 201810670783A CN 108768147 A CN108768147 A CN 108768147A
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- Prior art keywords
- submodule
- control system
- signal
- attachment device
- bridge arm
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- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
-
- 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
-
- 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
- H02M1/0012—Control circuits using digital or numerical techniques
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Small-Scale Networks (AREA)
Abstract
The present invention discloses the attachment device between a kind of MMC bridge arms control system and submodule, including：Multi signal multiplexing of transmission circuit based on CAN bus, for the interaction of the low frequency signal of bridge arm control system and submodule control system；Submodule power tube switching drive signal dedicated transmissions circuit drives for bridge arm control system to submodule control system sending submodule power switch；Optical fiber and cable transmission mode switch module switch in optical fiber and cable transmission signal transfer mode；Ipc monitor interface enables host computer to monitor the signal in attachment device in real time；And submodule power tube switching drive signal generating means, for receiving switch logic signals and generating submodule power tube switching drive signal.Such attachment device can help user more quickly to select suitable connection scheme under complicated application scenarios while reducing MMC attachment device hardware resource requirements between bridge arm control system and submodule, to further promote the performance of MMC.
Description
Technical field
The invention belongs to power supply control field, more particularly to the interaction skill between a kind of MMC bridge arms control system and submodule
Art.
Background technology
Modular multilevel converter (Modular Multilevel Converter, MMC), it is defeated in high pressure flexible direct current
The fields such as electricity, active filter, reactive-load compensator, motor driving have broad application prospects, and receive domestic and foreign scholars'
Extensive concern and further investigation.
MMC is different with the single power supply of topological structure of tradition, is a complicated more topological power systems, it is by multiple sons
The devices such as module, bridge arm controller, master controller, breaker, cable are made up of complicated physical connection.Wherein, bridge is designed
Reliable attachment device between arm controller and submodule is the key that MMC is stabilized operation.Currently, major part MMC is usually adopted
The interaction for realizing bridge arm control system and submodule is fetched with the multi-stag chain based on Ethernet.However, this interaction technique object
Manage that complicated, manufacturing cost is high, reliability is general, it is in some middle low power applications occasions to cost sensitivity and uncomfortable
With.In order to solve the technical issues of above-mentioned background technology proposes, the present invention is intended to provide the bridge arm controller and submodule of low cost
The attachment device of block disclosure satisfy that the interaction demand of master controller and submodule in middle low power applications occasion.
Invention content
The purpose of the present invention is to provide the attachment device between a kind of MMC bridge arms control system and submodule, can drop
Low MMC while attachment device hardware resource requirements, helps user in complicated application between bridge arm control system and submodule
Suitable connection scheme is more quickly selected under scene, to further promoted MMC performance, have it is at low cost, efficiently and
The features such as stablizing.
In order to achieve the above objectives, solution of the invention is：
A kind of attachment device between MMC bridge arms control system and submodule, bridge arm control system include bridge arm controller, son
Module includes submodule block controller；The attachment device includes：
Multi signal multiplexing of transmission circuit based on CAN bus, for realizing bridge arm control system and submodule control system
Low frequency signal interaction；
Submodule power tube switching drive signal dedicated transmissions circuit controls for realizing bridge arm control system to submodule
System sending submodule power switch drives；
Optical fiber and cable transmission mode switch module, according to the demand of user in optical fiber transmission and two kinds of signals of cable transmission
Switch in transmission mode；
Ipc monitor interface, provides communication interface with pc, and host computer is enable to monitor the letter in attachment device in real time
Number；And
Submodule power tube switching drive signal generating means, for receiving switch logic signals and generating submodule power
Pipe switching drive signal.
One aspect of the present invention is the provision of a kind of optimization cabling scenario of CAN bus, CAN bus is concentrated cloth
Be placed on the pcb board of bridge arm control system, by reasonable line arrangement, increase filter, greatly enhance its anti-interference ability, make be
System can stable operation in complicated electromagnetic environment；Multichannel CAN electrical level transferring chips are added around bus, by CAN bus
On differential signal be converted to low and high level signal, a plurality of types of digit chips are docked, to realize submodule-bridge arm control
Communication between system processed, bridge arm control system-host computer and host computer-submodule and interactive function.
Another aspect of the present invention, bridge arm control system, the submodule for being the provision of a kind of selection of bimodal are electrical
Isolation scheme, and electric signal transceiver interface and optical signal transceiver interface are separately designed in bridge arm control system and submodule.With
For bridge arm control system sends signal to submodule, when submodule common-mode voltage is relatively low, the lower telecommunications of alternative costs
Number transmission mode is realized using opto-coupler chip in bridge arm control circuit and carries out electrical isolation to the electric signal at both ends.Then, electric
Signal is transmitted to by electric signal transmission interfaces, common cable line in submodule, to realize bridge arm control system and submodule
Between signal interaction.When submodule common-mode voltage is higher, the higher optical signal transmission pattern of alternative costs, bridge arm control circuit makes
Optical signal is converted electrical signals to photoelectric conversion device, optical signal is transmitted to submodule by optical signal transmission interface, optical fiber
In, to realize the signal interaction of bridge arm control system and submodule control system.
Another aspect of the present invention is to be configured with mode strobe unit in bridge arm control system and submodule.
This device is controlled by bridge arm control system and submodule respectively.By taking bridge arm control system as an example, when selection electric signal receives and dispatches mould
When formula, bridge arm control system exports the gating signal of high level, makes control system output and received signal and electric signal transmission
Interface links.When selecting photosignal transceiver mode, bridge arm control system exports low level gating signal, makes control system
Output and received signal are linked with photoelectric conversion device and optical signal transmission interface.
Another aspect of the present invention is to be configured with submodule power tube switch drive generating means in submodule.
Therefore, bridge arm controller only need to send one group of switch logic signals to each submodule；Group modular power pipe switch drive
After generating means receive this group of switch logic signals, pass through NAND gate logic circuit, capacitance resistance network and gating circuit etc.
Generate the two groups of submodule power tube switch drives that can be shielded by fault-signal；Finally, two groups of switch drives are re-fed into submodule
To drive the power tube of submodule in the main circuit of block.
After adopting the above scheme, the present invention makes the bridge arm control system of MMC and bridge arm submodule be closely joined together, from
And efficiently easily transmit switching drive signal, submodule capacitor voltage, bridge arm control system state and submodule control system
The mass data such as state realize that bridge arm control system controls the pool of multiple submodule, to make the main electricity of the submodule of dispersion
Road, submodule control system and master control system form complete and energy stable operation power-supply system.The present invention has following
Advantageous effect：
(1) in the present invention, the interactive device between bridge arm control system and submodule has used CAN bus, and cost is lower,
It is more suitable for the application scenario that submodule number is less, power is relatively low；
(2) in the present invention, the proposition of the bridge arm control system, submodule electrical isolation scheme of bimodal selection, makes MMC
System being capable of the more flexible isolation side adjusted between bridge arm control circuit and submodule in the application scenario of different voltages grade
Formula, to be effectively saved hardware cost；
(3) in the present invention, the proposition of boss's modular power pipe switch drive generating means reduces bridge arm control system
Connection quantity between submodule, further saves cost.
Description of the drawings
Fig. 1 is the attachment device block diagram of MMC bridge arms control system involved in the present invention and submodule；
Fig. 2 is bimodal signal transmission strobe unit and level shifting circuit figure involved in the present invention；
Fig. 3 is electric signal transmission device figure involved in the present invention；
Fig. 4 is light signal transmission device figure involved in the present invention；
Fig. 5 is submodule power tube switch drive generating means figure.
Specific implementation mode
Below with reference to attached drawing, technical scheme of the present invention and advantageous effect are described in detail.
The present invention provides a kind of Modular multilevel converter (Modular Multilevel Converter, MMC) bridge
Attachment device between arm control system and submodule, including：
A. the multi signal multiplexing of transmission circuit based on CAN bus undertakes bridge arm control system and submodule control system
The function of low frequency signal interaction；
B. submodule power tube switching drive signal dedicated transmissions circuit mainly undertakes bridge arm control system to submodule control
The function of system sending submodule power switch driving processed；
C. optical fiber and cable transmission mode switch function, enable attachment device according to the demand of user optical fiber transmission and
Switch in two kinds of signal transfer modes of cable transmission；
D. ipc monitor interface function enables host computer by reserving communication interface with pc in attachment device
Monitor the signal in attachment device in real time；
E. submodule power tube switching drive signal generating means, the device receive switch logic signals and generate submodule
Power tube switching drive signal.
When realizing, by reasonable line arrangement, it can increase and filter by CAN bus centralized arrangement on the pcb board of bridge arm controller
Wave apparatus greatly enhances its anti-interference ability, enables a system to stable operation in complicated electromagnetic environment.
Then, multichannel CAN electrical level transferring chips are added around bus, and the differential signal in CAN bus is converted into height
Low level signal is to dock a plurality of types of digit chips, to realize submodule-bridge arm controller, on bridge arm controller-
Communication between position machine and host computer-submodule and interactive function.
Electric signal transceiver interface and optical signal transceiver interface are separately designed on bridge arm controller and submodule block controller.Son
When module common-mode voltage is relatively low, lower-cost electric signal transmission mode is selected, opto-coupler chip is first used on bridge arm controller
The electrical isolation for realizing submodule and bridge control circuit reuses generic telecommunication line and carries out signal by electric signal transceiver interface
Transmission.When submodule common-mode voltage is higher, the higher optical signal transmission scheme of cost is selected, optical fiber and its transceiver are directly used
Signal transmission is carried out by optical signal transceiver interface.
Mode strobe unit is configured with before aforementioned transceiver interface.Bridge arm controller judges common-mode voltage size and exports
Gating signal；Mode strobe unit selects two kinds of transmission moulds of electric signal or optical signal by judging the low and high level of gating signal
A kind of mode in state is to send switch logic signals, CAN inputs or output signal etc..
The present invention is configured with submodule power tube switching drive signal generating means, and bridge arm controller is only to each submodule
Block sends one group of switch logic signals；Group modular power pipe switching drive signal generating means receive this group of switching logic letter
It, can be by two groups of fault-signal shielding by generations such as NAND gate logic circuit, capacitance resistance network and gating circuits after number
Submodule power tube switching drive signal.
Fig. 1 is the attachment device of MMC bridge arms control system and submodule, which includes four parts, is bridge arm respectively
The connection circuit of control system, connection circuit, submodule main circuit and the host computer of submodule control system.Bridge arm control system
Connection circuit by CAN bus, level shifting circuit, mode gating circuit, electric signal transmission interfaces, opto-electronic conversion and optical signal
Coffret forms；The connection circuit of submodule control system is by optical coupling isolation circuit, electric signal transmission interfaces, opto-electronic conversion,
Optical signal transmission interface, level shifting circuit composition.By bridge arm control system to illustrating to connect for submodule block system transmission data
The process of connection device transmission data：Bridge arm control system sends a frame data by the ports RX to level switch module, and level turns
It changes circuit and the data frame is converted to the form of expression of aobvious recessive level by the form of expression of low and high level therewith, and send to CAN
In bus.After the level shifting circuit of corresponding submodule detects the aobvious recessive level change of CAN bus, it is again converted to
The data frame of low and high level, and give to mode gating module.When bridge arm control system selects electric signal transmission mode, data frame
Directly by the electric signal transmission interfaces of electric signal transmission interfaces and cable transmission to submodule control system circuit, using mould
State gating module quilt module control system uses；When selecting optical signal mode, data frame by opto-electronic conversion at optical signal,
It is transmitted to the optical signal transmission interface of submodule control system circuit by optical signal transmission interface, optical fiber, is selected using mode
Logical module quilt module control system uses.Bridge arm control system also experienced similar to submodule transmission switch logic signals
Process, but switch logic signals need by submodule main circuit to be made by submodule power tube switch drive generating means
With.
Fig. 2 is bimodal signal transmission strobe unit and level shifting circuit.In the device, the aobvious recessiveness in CAN bus
Level is converted into low and high level by TJA1040 chips and the corresponding PWM switch logic signals of two-way submodule are sent into mould together
In quasi- switch chip 74LV3257.74LV3257 judges the gating signal that bridge arm control system generates, when gating signal is high,
74LV3257 selects electric signal transmission pattern, and previous input signal is exported to corresponding electric signal transmission device；Conversely, choosing
Optical signal transmission pattern is selected, and exports previous input signal to corresponding light signal transmission device.
Fig. 3 is electric signal transmission device.By taking bridge arm control system sends signal to submodule as an example, in the apparatus, bridge
Arm control system directly sends electric signal from its electric signal transmission interfaces by cable to submodule.Submodule is passed by electric signal
After defeated interface to electric signal, it is inputted 6N137 optical coupling isolation circuits.Optical coupling isolation circuit regenerates and input signal is patrolled
Identical, electrical isolation electric signal is collected, is sent into submodule control system.
Fig. 4 is light signal transmission device figure.By taking bridge arm control system sends signal to submodule as an example, in the apparatus,
Electric signal to be sent is converted to optical signal by bridge arm control system using the photoelectric switching circuits formed of SN74751 and 1521,
Again optical signal is sent to submodule from optical signal transmission interface by optical fiber.Submodule passes through optical signal transmission interface to light
After signal, it is inputted 2521 photoelectric switching circuit.Photoelectric switching circuit regeneration it is identical with input signal logic, electrically every
From electric signal, send into submodule control system.
Fig. 5 is submodule power tube switching drive signal generating means.By taking switch logic signals PWM1 as an example, submodule connects
The submodule switch logic signals PWM1 received is sent to by NAND gate 74HC20, with door 74HC08 and capacitance resistance and constitutes
Dead zone generative circuit and complementary signal generating circuit, ultimately produce two groups of complementary signal PWM1a and PWM1b with dead zone.This
Two groups of signals and PWM1a* from DSP in submodule and PWM1b* are admitted to together in gating chip 74HC257D.Work as system
When breaking down and exporting the fault-signal of high level, 74HC257D only exports low level switching drive signal to close submodule
Block power tube；When system worked well and gating signal are low level, 74HC257D exports PWM1a and PWM1b to drive son
Modular power pipe；When system worked well and gating signal are high level, 74HC257D exports PWM1a* and PWM1b* to drive
Mover modular power pipe.
Above example is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within the scope of the present invention
Within.
Claims (7)
1. the attachment device between a kind of MMC bridge arms control system and submodule, bridge arm control system includes bridge arm controller, submodule
Block includes submodule block controller；It is characterized in that the attachment device includes：
Multi signal multiplexing of transmission circuit based on CAN bus, for realizing the low of bridge arm control system and submodule control system
Frequency signal interaction；
Submodule power tube switching drive signal dedicated transmissions circuit, for realizing bridge arm control system to submodule control system
Sending submodule power switch drives；
Optical fiber and cable transmission mode switch module, according to the demand of user in optical fiber transmission and two kinds of signal transmissions of cable transmission
Switch in pattern；
Ipc monitor interface, provides communication interface with pc, and host computer is enable to monitor the signal in attachment device in real time；With
And
Submodule power tube switching drive signal generating means are opened for receiving switch logic signals and generating submodule power tube
Close drive signal.
2. the attachment device between a kind of MMC bridge arms control system as described in claim 1 and submodule, it is characterised in that：Institute
CAN bus centralized arrangement is stated on the pcb board of bridge arm controller.
3. the attachment device between a kind of MMC bridge arms control system as claimed in claim 2 and submodule, it is characterised in that：?
Multichannel CAN electrical level transferring chips are added around bus, and the differential signal in CAN bus is converted into low and high level signal to dock
A plurality of types of digit chips.
4. the attachment device between a kind of MMC bridge arms control system as described in claim 1 and submodule, it is characterised in that：Institute
It states and electric signal transceiver interface and optical signal transceiver interface, submodule common mode is respectively set on bridge arm controller and submodule block controller
When voltage is relatively low, electric signal transmission mode is selected；When submodule common-mode voltage is higher, select optical signal transmission, using optical fiber and
Its transceiver carries out signal transmission by optical signal transceiver interface.
5. the attachment device between a kind of MMC bridge arms control system as claimed in claim 4 and submodule, it is characterised in that：Institute
Mode strobe unit is configured before stating electric signal transceiver interface and optical signal transceiver interface, bridge arm controller judges common-mode voltage
Size simultaneously exports gating signal；Mode strobe unit selects electric signal or optical signal by judging the low and high level of gating signal
A kind of mode in two kinds of transmission mode is to send switch logic signals, CAN inputs or output signal.
6. the attachment device between a kind of MMC bridge arms control system as described in claim 1 and submodule, it is characterised in that：Institute
When stating the work of submodule power tube switching drive signal generating means, bridge arm controller only sends one group to each submodule and opens
Close logical signal；After group modular power pipe switching drive signal generating means receive this group of switch logic signals, energy is generated
Enough two groups of submodule power tube switching drive signals shielded by fault-signal.
7. the attachment device between a kind of MMC bridge arms control system as claimed in claim 6 and submodule, it is characterised in that：It adopts
Submodule power tube switching drive signal is generated with NAND gate logic circuit, capacitance resistance network or gating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670783.2A CN108768147A (en) | 2018-06-26 | 2018-06-26 | A kind of attachment device between MMC bridge arms control system and submodule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670783.2A CN108768147A (en) | 2018-06-26 | 2018-06-26 | A kind of attachment device between MMC bridge arms control system and submodule |
Publications (1)
| Publication Number | Publication Date |
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| CN108768147A true CN108768147A (en) | 2018-11-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810670783.2A Pending CN108768147A (en) | 2018-06-26 | 2018-06-26 | A kind of attachment device between MMC bridge arms control system and submodule |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617565A (en) * | 2018-12-26 | 2019-04-12 | 上海数明半导体有限公司 | The circuit device and photovoltaic system of circuit module, multimode with communication function |
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| CN102347992A (en) * | 2010-07-29 | 2012-02-08 | 研祥智能科技股份有限公司 | Network device and network server capable of supporting photoelectric switching |
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| US9590483B1 (en) * | 2015-10-15 | 2017-03-07 | Ge Energy Power Conversion Technology Ltd | Control of balance of arm capacitor voltages in STATCOMS based on chain links of H bridge modules |
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Application publication date: 20181106 |