CN106602848B - Parallel power module driving control method and device and converter - Google Patents
Parallel power module driving control method and device and converter Download PDFInfo
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- CN106602848B CN106602848B CN201611261388.6A CN201611261388A CN106602848B CN 106602848 B CN106602848 B CN 106602848B CN 201611261388 A CN201611261388 A CN 201611261388A CN 106602848 B CN106602848 B CN 106602848B
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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
Abstract
The invention provides a driving control method and device for parallel power modules and a converter. The control method comprises the following steps: collecting the electric signal waveforms of the electric signals at the electrodes of the transistors in each power module of the parallel power modules; comparing the acquired electrical signal waveforms of each power module; and adjusting the driving signal of each power module according to the comparison result so as to drive and control each power module, so that the on-off current of each power module in the parallel power modules is kept consistent.
Description
Technical field
The invention belongs to the drive control method, apparatus of technical field of power generation more particularly to a kind of parallel power module and
Current transformer.
Background technique
Current transformer is the voltage for making power-supply system, frequency, the number of phases and other electrical parameters or the changed electricity of characteristic
Device equipment.Current transformer, for carrying out rectification and inversion processing to the electric current of input, will be handled usually in grid-connected system
During the electric energy obtained afterwards is connected to the grid.Current transformer is increasingly taken seriously as the significant components in grid-connected system.
The power module driving of current transformer is divided into two kinds at present, and one is the modes of pure analog circuit to go to realize, and in addition one
Kind is the digital drive technology using CPU.Go to realize by the way of pure analog circuit, driver be passively receive instruction and
Fault message is transmitted, does not have the flexibility of digital drive.Using digital drive technology, it is generally only able to achieve failure logging and ginseng
The functions such as number adjusting do not relate to failure accurate positionin, adaptive stream etc. functions.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present invention provide a kind of parallel power module drive control method,
Device and current transformer.
On the one hand, the embodiment of the present invention provides a kind of drive control method of parallel power module, comprising: acquires function in parallel
At each electrode of each transistor in each power module of rate module the step of the electric signal waveform of electric signal；Compare and is acquired
Each power module electric signal waveform the step of；And the driving letter of each power module is adjusted according to comparison result
Number, to carry out drive control to each power module so that each power module in parallel power module open and
The step of cut-off current is consistent.
On the other hand, the embodiment of the present invention provides a kind of drive dynamic control device of parallel power module, comprising: acquisition is single
Member, processing unit and driving unit, the acquisition unit are configured as each in each power module of acquisition parallel power module
The electric signal waveform of electric signal at each electrode of transistor.The processing unit is configured as each power module more collected
Electric signal waveform.The driving unit is configured as adjusting the driving signal of each power module according to comparison result, thus
Drive control is carried out to each power module so that each power module in parallel power module open and cut-off current
It is consistent.
Also on the one hand, the embodiment of the present invention provides a kind of current transformer, including parallel power module and one or more it is above-mentioned
Parallel power module drive dynamic control device, the drive dynamic control device of above-mentioned parallel power module and above-mentioned parallel power module
It is connected, for controlling above-mentioned parallel power module.
Also on the one hand, the embodiment of the present invention provides a kind of drive dynamic control device of parallel power module, comprising: memory,
Processor and input port.The memory stores the memory of computer executable instructions；The processor is deposited for executing this
The program of reservoir storage, the program make the processor execute the drive control method of above-mentioned parallel power module；The input terminal
Mouthful, for receiving the electric signal waveform of each power module collected.
The drive control method, apparatus and current transformer of a kind of parallel power module provided in an embodiment of the present invention, by adopting
Collect the electric signal waveform at each pole of each transistor in each power module, according to the above electrical signal waveform of acquisition to each function
Rate module compares, and the driving signal of each power module is adjusted according to comparison result, thus to each power mould
Block carries out drive control so that each power module in parallel power module open and cut-off current is consistent, it is real
The adaptive multi-parallel of existing power module.
Detailed description of the invention
The features and advantages of the present invention can be more clearly understood by reference to attached drawing, attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 shows the application scenarios signal of the conventional parallel power module control device and current transformer according to a kind of embodiment
Figure；
Fig. 2 shows the flow charts according to the drive control method of the parallel power module of embodiment a kind of；
Fig. 3 shows the flow chart of the drive control method of the parallel power module according to another embodiment；
Fig. 4 shows the flow chart of the drive control method of the parallel power module according to another embodiment；
Fig. 5 shows a kind of structural block diagram of the drive dynamic control device of the parallel power module according to embodiment；
Fig. 6 shows a kind of application scenarios schematic diagram of the drive dynamic control device of the parallel power module according to embodiment；
Fig. 7 shows a kind of acquisition unit acquisition electric signal of the drive dynamic control device of the parallel power module according to embodiment
The example process schematic diagram of waveform；
Fig. 8 shows a kind of structural block diagram of the current transformer according to embodiment；
Fig. 9 shows a kind of structural block diagram of the drive dynamic control device of the parallel power module according to embodiment.
In figure:
101, breaker, 102, arrester, 103, filter,
104, generator rectifier, 105, chopper, 106, inverter,
107, AC fuse, 108, inductance, 109, main circuit breaker,
110, current sensor, 111, precharge, 112, alternating current filter.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is described.
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.In the the accompanying drawings and the following description, well known structure and skill is not shown
Art is unnecessary fuzzy to avoid causing the present invention.
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.In the figure in order to clear
It is clear, it may be exaggerated the thickness of region and layer.Identical appended drawing reference indicates same or similar structure in figure, thus will save
Slightly their detailed description.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to provide and fully understand to the embodiment of the present invention.However,
It will be appreciated by persons skilled in the art that technical solution of the present invention can be practiced without one in the specific detail or more
It is more, or can be using other methods, constituent element, material etc..In other cases, be not shown in detail or describe known features,
Material or operation are to avoid obscuring major technique intention of the invention it should be noted that in the absence of conflict, this Shen
Please in embodiment and embodiment in feature can be combined with each other.
Fig. 1 shows the applied field of drive dynamic control device and current transformer according to a kind of conventional parallel power module of embodiment
Scape schematic diagram.As shown in Figure 1, being illustrated by taking the structure of current transformer in wind generator system as an example, it should be understood that it is without being limited thereto, this
The drive control method, apparatus and current transformer of the parallel power module of scheme can also be used in water power, in thermoelectricity system.Wind-force hair
Electric system includes: wind-driven generator G and current transformer, current transformer here include breaker 101, arrester 102, filter 103,
Generator rectifier 104, chopper 105, inverter 106, AC fuse 107, inductance 108, main circuit breaker 109, electric current pass
Sensor 110, precharge 111, alternating current filter 112.It include multiple power modules and a controller (figure in the current transformer
In be not shown), controller is connect with power module respectively, also, each power module is connected with a certain of generator, multiple
Power module can complete a certain item function jointly, such as include 3 power modules in rectifier 104, include in inverter 106
The control instruction of 3 power modules, the operation that each power module therein executes is issued by controller.For example, rectifier
104 or inverter 106 in power module acquire the analog signal of the electric current of corresponding phase, voltage and temperature and be sent to controller,
Controller samples the analog signal, obtains corresponding digital signal, is answered by the analysis output phase to the digital signal
Control instruction.Moreover, each function of power module is that the control signal sent by controller is controlled in current transformer
's.Since net side power module is parallel connection, with insulated gate bipolar transistor (English: Insulated Gate Bipolar
Transistor, abridge IGBT) for module, existing technical problem underlying is that multiple IGBT are directly in parallel, since control is believed
Number and module installation the inconsistent power module that will lead to of structural path open cut-off current unevenness stream.In addition, can't be real
The accurate positionin of existing failure, this is because the drive control of current power module can be divided into two kinds, one is pure simulation electricity
The mode on road goes to realize, another is the digital drive technology using controller.It goes to realize by the way of pure analog circuit,
Driver is passively to receive instruction and transmitting fault message, does not have the flexibility of digital drive control.Using digital drive
Technology can flexibly realize multiple functions.But existing digital drive technology, it is fairly simple, usually only realize function
The whole failure logging of rate module, the functions such as power module univers parameter adjusting.Although the parallel connection of multimode can improve the side of structure
Formula accomplishes the stream of module by the modes such as structure is consistent, but such method does not have adaptation function, and in practice,
Since compatibility difficulty of signal path and structure and other effects can be undesirable.
In view of combining the above situation of Fig. 1 description, the invention proposes a kind of drive control sides of parallel power module
Method, device and current transformer.
Fig. 2 shows the flow charts according to the drive control method of the parallel power module of embodiment a kind of.As shown in Fig. 2,
The drive control method of the parallel power module acquires each crystalline substance in each power module of parallel power module in S210
Electric signal waveform at each electrode of body pipe；Here power module majority is adopted as intelligent power module, be with IGBT is interior
The advanced hybrid integrated power component of core, by the gate drive circuit of high-speed low-power-consumption tube core (IGBT) and optimization, and quickly
Circuit is protected to constitute.In one example, electric signal waveform here may include each transistor in each power module
The waveform of tube voltage drop and transistor gate pole tension.In S220, the electric signal waveform of each power module more collected.?
In step S230, the driving signal of each power module is adjusted according to comparison result, to drive to each power module
Dynamic control so that each power module in parallel power module open and cut-off current is consistent.It is every by acquiring
The electric signal waveform at each pole of each transistor in a power module, according to the above electrical signal waveform of acquisition to each power mould
The above electrical signal waveform of block compares, and obtains the driving control signal of each power module, make up each power module with
Loss of signal in the route of access realizes power so that the electric current that is switched on or off of multiple parallel power modules flows unanimously
The adaptive multi-parallel of module.In one example, the electric signal of this method can also include each of with parallel power module
The connected DC bus-bar voltage of power module, this method can also include determining failure based on above electrical signal and typical fault table
Type.By taking short trouble as an example, short trouble will also tend to triggering power module over current fault, but by checking failure
The DC bus-bar voltage waveform of front and back, often it can be found that when short trouble occurs, the DC bus being connected with power module is electric
Pressure often substantially fall by moment, this feature, which can be used as typical fault feature, inquires in existing typical fault table and be somebody's turn to do
Fault type is power module short trouble, and then power module short circuit and over current fault are distinguished, so as to synthesis
Judgement distinguishes primary fault signal, sends out fault-signal afterwards, provides accurate primary fault type.
It should be understood that traditional controller can carry out some fault location by the multiple test points of itself, but can only
Module level is navigated to, for power module inside, and not enough further removes positioning primary fault point.In this way, for example
It can be according to electric signal waveform of the power module to break down in the power module before and after failure generation at each pole of transistor
It is compared with experience electric signal waveform, to determine corresponding fault location.
In one example, at each electrode of each transistor in each power module of acquisition parallel power module
Collection process in the step of electric signal waveform, and, in the driving signal for adjusting each power module according to comparison result,
So that drive control is carried out to each power module, so that each power module in parallel power module being opened and turning off
The drive control process to each power module in the step of electric current is consistent is completed to communicate via optical fiber.
Fig. 3 shows the flow chart of the drive control method of the parallel power module according to another embodiment.Such as Fig. 3 institute
Show, the drive control method of the parallel power module, in S310, acquires each in each power module of parallel power module
Electric signal waveform at each electrode of transistor；Here electric signal can also include the output electric current of each power module,
Only by adjusting cannot still make parallel power after the tube voltage drop and transistor gate pole tension of each transistor in each power module
Module is opened and when cut-off current keeps preferable consistency, can also pass through the output electric current of above-mentioned each power module
Current waveform is further adjusted driving control signal.In S320, parallel power module is obtained according to electric signal waveform
Each power module open and turn-off time and electric current, compare and open and turn-off time and electric current.In S330, according to than
Relatively result adjusts the driving signal of each power module, so that drive control is carried out to each power module, so that in parallel
Each power module in power module open and cut-off current is consistent.In this way, can not only make up each
Loss of signal in power module and the route of access, moreover it is possible to solve to open and close caused by mending power module itself element difference
The problem of disconnected current unevenness stream.In one example, this method further includes, according to the driving adjusting parameter to each power module
The step of carrying out drive control.Such as judge the time which module is first opened and first opened, driving control signal is adjusted, into
The processing of row corresponding delay, further according to the cut-off current of opening of each power module, corrects repeatedly, and final acquisition enables to open-minded
The consistent driving control signal of stream of cut-off current and other power modules, can according to the driving control signal to it is multiple simultaneously
Connection power module is controlled.
Fig. 4 shows the flow chart of the drive control method of the parallel power module according to another embodiment.Such as Fig. 4 institute
Show, the drive control method of the parallel power module, in S410, acquires each in each power module of parallel power module
Electric signal waveform at each electrode of transistor.Here electric signal waveform may include each transistor in each power module
Tube voltage drop, transistor gate pole tension and each power module output electric current waveform.In S420, before being occurred according to failure
The acquisition position of electric signal waveform and electric signal afterwards obtains abort situation positioning.In one example, in inverter and
For multiple power devices of connection, above electrical signal waveform may include: upper tube tube voltage drop VCE, down tube tube voltage drop VCE, exchange
Export electric current.In one example, above electrical signal waveform can also include DC bus-bar voltage model.After failure occurs, adjust
The above electrical signal waveform haveing at each electrode of each transistor in each power module acquired before and after failure generation, finds
In the electric signal waveform changed greatly before and after failure occurs in above-mentioned waveform, the electric signal waveform is acquired then can determine
Position of components is the electric elements specifically to break down.In one example, above-mentioned failure can also to that the acquisition of front and back occur
To each power module in each transistor each electrode above electrical signal waveform electric signal waveform corresponding with experience
It is compared, provides accurate abort situation positioning.In one example, when this method can also include that failure occurs, with event
On the basis of moment occurs for barrier, such as 512 sampled datas can be recorded forward, record 512 sampled datas backward, in this way by event
The state recording after operating status and failure generation before barrier generation, is analyzed convenient for consequent malfunction.The above method can be passed through
The fault type of positioning includes over current fault, short trouble, excess temperature failure, under-voltage fault, over-voltage fault etc..
Fig. 5 shows a kind of structural block diagram of the drive dynamic control device of the parallel power module according to embodiment.Such as Fig. 5 institute
Show, the drive dynamic control device 500 of the parallel power module, including acquisition unit 510, processing unit 520 and driving unit 530,
The acquisition unit 510 is configured as the electricity at each electrode of each transistor in each power module of acquisition parallel power module
Signal waveform.The processing unit 520 is configured as the electric signal waveform of each power module more collected.The driving unit
530 are configured as adjusting the driving signal of each power module according to comparison result, to drive to each power module
Dynamic control so that each power module in parallel power module open and cut-off current is consistent.In an example
In, above electrical signal may include the tube voltage drop and transistor gate pole tension of each transistor in each power module.?
In one example, above electrical signal can also include the output electric current of each power module, which can also be configured
For obtained according to electric signal waveform parallel power module each power module open and turn-off time and electric current, and, than
It is more described to open and turn-off time and electric current.In one example, above electrical signal further includes each of with parallel power module
The connected DC bus-bar voltage of power module, the device further include can with failure diagnosis unit, be configured as based on electric signal and
Typical fault table judges fault type.In one example, which can also include failure location unit, be configured as basis
The acquisition position of front and back occurs for failure electric signal waveform and electric signal determines that abort situation positions.In one example, this is adopted
The drive control process of the collection process and the driving unit that collect unit is completed to communicate via optical fiber.In one example, should
Device can individually be arranged or be coupled in existing controller, and in the case where being separately provided, which can also be with
The setting separated as a sub-controlling unit with existing controller.Using the device also as sub-controlling unit with
, can be with self-defining communication protocol for the setting of existing controller separation, the device and controller or the device and power mould
The up to high speed communication of 50M may be implemented between block, can be transmitted by high speed fibre DC bus-bar voltage and exchange export it is electric
The electric signals such as stream are instructed for closed-loop control, reception controller to controller and are completed between power module by controller
Parameter exchange.And avoid the interference of other signals such as electromagnetism.It should be noted that the communication mode of the control device is not limited to
The mode of high speed fibre is stated, can also be communicated by conventional communication mode.Since the device is corresponding with this method, two
Person has the function of similar, can solve similar technical problem, therefore, the same or similar place of the two repeats no more.
Fig. 6 shows a kind of application scenarios schematic diagram of the drive dynamic control device of the parallel power module according to embodiment.Such as
Shown in Fig. 6, by taking the power device of multiple parallel connections in inverter as an example, the power module 620 of each of inverter parallel connection is right
The drive dynamic control device 610 for being provided with a parallel power module answered, the device 610 can be individually arranged to power module
620 are controlled, and in one example, which can also be coupled in existing controller to power module 620
Drive control is carried out, in the case where being separately provided, which can also be used as a sub-controlling unit and existing control
The setting of device separation processed.
Fig. 7 shows a kind of acquisition unit acquisition electric signal of the drive dynamic control device of the parallel power module according to embodiment
The example process schematic diagram of waveform.As shown in fig. 7, by taking the power device of multiple parallel connections in inverter as an example, the parallel connection function
The drive dynamic control device 710 of rate module can acquire the 720 tube voltage drop VCE of upper tube of power control module, 730 tube voltage drop of down tube
One of VCE, 720 gate voltage of upper tube, 730 gate voltage of down tube, ac output current, DC bus-bar voltage are a variety of.
Fig. 8 shows a kind of structural block diagram of the current transformer according to embodiment.A kind of current transformer 800, including parallel power mould
The drive dynamic control device 820 of block 810 and one or more above-mentioned parallel power modules, the driving control of above-mentioned parallel power module
Device 820 processed is connected with above-mentioned power module 210, for carrying out drive control to above-mentioned power module.
In conjunction with the drive control method of Fig. 2 and Fig. 5 parallel power module described and the drive control of parallel power module
At least part of device can be realized by calculating equipment.Fig. 9 shows a kind of driving of the parallel power module according to embodiment
The structural block diagram of control device.As shown in figure 9, calculating equipment 900 includes processor 903, memory 904 and input port 902,
The memory 904, for storing program；The processor 903, for executing the program of the memory 904 storage, which makes
The processor 903 executes the drive control method of above-mentioned parallel power module；The input port 902, it is collected for receiving
The electric signal waveform of each power module.In one example, which can also include input equipment 901, input
Port 902, processor 903, memory 904, output port 905 and output equipment 906.Wherein, input port 902, processing
Device 903, memory 904 and output port 905 are connected with each other by bus 910, and input equipment 901 and output equipment 906 divide
Not Tong Guo input port 902 and output port 905 connect with bus 910, and then connect with the other assemblies for calculating equipment 900.
It should be noted that output interface and input interface here can also be indicated with I/O interface.Specifically, input equipment 901 connects
It receives from external input information, and processor 903 is transmitted to for information is inputted by input port 902；Processor 903 is based on
The computer executable instructions stored in memory 904 handle to generate output information input information, by output information
It is temporarily or permanently stored in memory 904, output information is then transmitted to by output equipment by output port 905
906；Output information is output to the outside for calculating equipment 900 by output equipment 906.
Above-mentioned memory 904 includes the mass storage for data or instruction.For example it rather than limits, memory
904 may include HDD, floppy disk drive, flash memory, CD, magneto-optic disk, tape or universal serial bus (USB) driver or two
The combination of a or more the above.In a suitable case, memory 904 may include that can be removed or non-removable (or solid
Medium calmly).In a suitable case, memory 904 can calculate inside or outside equipment 900.In a particular embodiment,
Memory 904 is non-volatile solid state memory.In a particular embodiment, memory 904 includes read-only memory (ROM).?
In suitable situation, which can be the ROM of masked edit program, programming ROM (PROM), erasable PROM (EPROM), electricity can
Wipe PROM (EEPROM), electrically-alterable ROM (EAROM) or the combination of flash memory or two or more the above.
Bus 910 includes hardware, software or both, and the component for calculating equipment 900 is coupled to each other together.For example
Rather than limit, bus 910 may include accelerated graphics port (AGP) or other graphics bus, enhancing Industry Standard Architecture (EISA)
Bus, front side bus (FSB), super transmission (HT) interconnection, the interconnection of Industry Standard Architecture (ISA) bus, infinite bandwidth, low pin count
(LPC) bus, memory bus, micro- channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express
(PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association part (VLB) bus or other conjunctions
The combination of suitable bus or two or more the above.In a suitable case, bus 910 may include one or more
Bus 910.Although specific bus has been described and illustrated in the embodiment of the present invention, the present invention considers any suitable bus or mutual
Even.
When the drive dynamic control device for realizing the parallel power module for combining Fig. 5 to describe by calculating equipment 900 shown in Fig. 9
When, input equipment 901 receives the electric signal waveform acquired in each power module at each pole of transistor, in a particular embodiment,
The I/O interface being connected with output equipment may include hardware, software or both, provide for calculate equipment 900 and one or
One or more interfaces of communication between multiple I/O equipment.In a suitable case, calculate equipment 500 may include one or
These multiple I/O equipment.One or more of these I/O equipment allow the communication between people and computer system 900.Citing comes
Say rather than limit, I/O equipment may include keyboard, keypad, microphone, monitor, mouse, printer, scanner, loudspeaker,
Still camera, contact pilotage, handwriting pad, touch screen, trace ball, video camera, another suitable I/O equipment or two or more
The combination of multiple the above.I/O equipment may include one or more sensors.The embodiment of the present invention considers appointing for them
What suitable I/O equipment and any suitable I/O interface.In a suitable case, I/O interface may include one or more devices
Or processor 903 can allow for drive the software drivers of one or more of these I/O equipment.In a suitable case, I/O connects
Mouth may include one or more I/O interfaces.Although specific I/O interface has been described and illustrated in the embodiment of the present invention, the present invention
Embodiment considers any suitable I/O interface.The processor 903 based on the computer executable instructions stored in memory 904,
The power to break down in the driving adjusting parameter and/or each power module of each power module is obtained according to electric signal waveform
The fault location of module.Then needing above-mentioned driving adjusting parameter via output port 905 and output equipment 906 and/or
Fault location output.
That is, the drive dynamic control device of parallel power module according to an embodiment of the present invention also may be implemented as wrapping
Include the memory 904 for being stored with computer executable instructions；And processor 903, the processor 903 can be held in execution computer
When row instruction, the drive control method and parallel power module of the parallel power module for combining Fig. 2 and Fig. 5 to describe may be implemented
Drive dynamic control device.
In a suitable case, computer executable instructions may include one or more based on semiconductor or other are integrated
Circuit (IC) (for example, such as field programmable gate array (FPGA) or application-specific integrated circuit (ASIC)), hard disk drive (HDD), mixing
Hard disk drive (HHD), CD, CD drive (ODD), magneto-optic disk, magneto optical driver, floppy disk, floppy disk drive
(FDD), tape, hologram memory medium, solid state drive (SSD), ram driver, safe digital card or driving or other are suitable
Computer-readable non-transitory storage medium or two or more the above combination.
It needs to define, the invention is not limited to specific configuration described above and shown in figure and processing.Also,
For brevity, the detailed description to known method technology is omitted here.In the above-described embodiments, it has been described and illustrated several
Specific step is as example.But method process of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified after understanding spirit of the invention, modification and addition, or between changing the step
Sequentially.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be the INDIRECT COUPLING by some ports, device or unit
Or communication connection, it is also possible to electricity, mechanical or other form connections.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.Some or all of unit therein can be selected to realize the embodiment of the present invention according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (12)
1. a kind of drive control method of parallel power module, comprising:
Acquire the electrical signal wave of electric signal at each electrode of each transistor in each power module of the parallel power module
Shape, the electric signal include the output electric current of each power module；
According to the electric signal waveform obtain each power module of the parallel power module open and turn-off time and electricity
Stream；Compare described open and turn-off time and electric current；
The driving signal of each power module is adjusted according to comparison result, to drive to each power module
Dynamic control so that each power module in the parallel power module open and cut-off current is consistent.
2. according to the method described in claim 1, wherein, the electric signal further includes each crystal in each power module
The tube voltage drop and transistor gate pole tension of pipe.
3. according to the method described in claim 1, wherein, the electric signal further includes each function with the parallel power module
The connected DC bus-bar voltage of rate module,
The method also includes: fault type is determined based on the electric signal and typical fault table.
4. according to the method described in claim 3, further include,
The acquisition position of front and back occurs according to failure the electric signal waveform and the electric signal determines that abort situation positions.
5. according to the method described in claim 1, wherein, in each power module of the acquisition parallel power module
In each transistor each electrode at electric signal electric signal waveform the step of in collection process, and, according to compare knot
Fruit adjusts the driving signal of each power module, so that drive control is carried out to each power module, so that
Each power module in the parallel power module open and the step of cut-off current is consistent in described each
The drive control process of power module is completed to communicate via optical fiber.
6. a kind of drive dynamic control device of parallel power module, comprising:
Acquisition unit, at each electrode for being configured as acquiring each transistor in each power module of the parallel power module
The electric signal waveform of electric signal, the electric signal include the output electric current of each power module；
Processing unit, is configured as waveform according to the electric signal and obtains each power module of the parallel power module opening
Logical and turn-off time and electric current, and, it is more described to open and turn-off time and electric current；
Driving unit is configured as adjusting the driving signal of each power module according to comparison result, thus to described
Each power module carries out drive control, so that electricity is opened and turned off to each power module in the parallel power module
Stream is consistent.
7. device according to claim 6, wherein the electric signal further includes each crystal in each power module
The tube voltage drop and transistor gate pole tension of pipe.
8. device according to claim 6, wherein the electric signal further includes each function with the parallel power module
The connected DC bus-bar voltage of rate module,
Described device further includes failure diagnosis unit, is configured as determining failure classes based on the electric signal and typical fault table
Type.
9. device according to claim 8 further includes failure location unit, it is configured as that the institute of front and back occurs according to failure
The acquisition position for stating electric signal waveform and the electric signal determines that abort situation positions.
10. device according to claim 6, wherein the drive of the collection process of the acquisition unit and the driving unit
Dynamic control process is completed to communicate via optical fiber.
11. a kind of current transformer, comprising: parallel power module and one or more claims 6 to it is described in any one of claim 10 simultaneously
Join the drive dynamic control device of power module, the drive dynamic control device of the parallel power module is connected with the parallel power module
It connects, for carrying out drive control to the parallel power module.
12. a kind of drive dynamic control device of parallel power module, comprising:
Memory, for storing program；
Processor, for executing the described program of the memory storage, described program wants the processor perform claim
Ask 1 to claim 5 any one the parallel power module drive control method；
Input port, for receiving the electric signal waveform of each power module collected.
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| CN108988397B (en) * | 2017-05-31 | 2021-10-22 | 许继电气股份有限公司 | Parallel operation power distribution control method for energy storage converters |
| CN107222093A (en) * | 2017-06-09 | 2017-09-29 | 北京天诚同创电气有限公司 | Current transformer and the power system for wind-power electricity generation |
| CN110661431B (en) * | 2018-06-29 | 2020-12-29 | 北京天诚同创电气有限公司 | Wind power converter and control method and control device thereof |
| WO2024037603A1 (en) * | 2022-08-17 | 2024-02-22 | Precision Robotics (Hong Kong) Limited | Power supply control method, system, device and medium for surgical robot |
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| CN101425798B (en) * | 2007-10-30 | 2011-09-07 | 比亚迪股份有限公司 | Dynamic current equalizing method and device for parallel IGBT |
| JP5440335B2 (en) * | 2010-04-06 | 2014-03-12 | 富士電機株式会社 | Power semiconductor module and power converter using the same |
| CN102208800B (en) * | 2011-06-09 | 2014-04-30 | 国网电力科学研究院 | Adaptive insulated gate bipolar transistor (IGBT) series-connection voltage-sharing circuit with overcurrent protection function |
| CN105743329B (en) * | 2016-03-23 | 2018-06-26 | 西安交通大学 | A kind of IGBT parallel connections dynamic flow equalizing circuit and control method |
| CN106059269B (en) * | 2016-06-22 | 2018-10-30 | 杭州飞仕得科技有限公司 | A kind of driving circuit suitable for IGBT multi-parallels |
| CN106160428B (en) * | 2016-08-02 | 2018-12-07 | 西安交通大学 | A kind of IGBT parallel current-equalizing circuit and control method |
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