CN110334407A - Doubly fed induction generator electromagnetical transient emulation method and analogue system based on FPGA - Google Patents
Doubly fed induction generator electromagnetical transient emulation method and analogue system based on FPGA Download PDFInfo
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- CN110334407A CN110334407A CN201910503950.9A CN201910503950A CN110334407A CN 110334407 A CN110334407 A CN 110334407A CN 201910503950 A CN201910503950 A CN 201910503950A CN 110334407 A CN110334407 A CN 110334407A
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Abstract
The invention discloses the electromagnetical transient emulation method and analogue system of a kind of doubly fed induction generator based on FPGA, belongs to Simulating technique in Electric Power System field and hardware calculates acceleration field.Doubly fed induction generator circuit after decoupling is carried out real-time simulation according to the equivalent-circuit model of wind-force electrical machinery by the invention on FPGA；And the parameter updating module of wind-force electrical machinery is fast implemented using HLS High Level Synthesis technology, shorten the development cycle of hardware system；Simultaneously by carrying out simulation calculation using single precision floating datum in parameter updating module, while keeping higher computational accuracy, the utilization rate of FPGA hardware resource is reduced；It is converted by using Park, reduces computing repeatedly for parameter more new district, further reduced hardware resource consumption.Present system frame clear and definite, convenient for transplanting extension, and simulation performance is superior, it can be achieved that real-time simulation, is therefore particularly suitable for electro-magnetic transient real-time simulated animation of the doubly fed induction generator on FPGA parallel architecture platform.
Description
Technical field
The present invention relates to blower electromagnetic transient simulation technologies and hardware to calculate acceleration field, more particularly to a kind of based on FPGA
Doubly fed induction generator electromagnetical transient emulation method and analogue system.
Background technique
The energy plays a very important role in the raising of social progress and productivity, but fossil energy is long-term
The problems such as a large amount of consumption bring atmosphere pollution, climate warming, more makes earth environment worsening, greatly develops renewable energy
Source has become global common recognition.Taken a fancy to since wind-powered electricity generation has clean cheap feature by various countries, various countries worldwide is all
Wind-powered electricity generation is being greatly developed to improve energy resource structure and global environment.
With the fast development of wind power industry, traditional asynchronous generator is since there are revolving speeds to change, operation
The disadvantages of inefficiency, it is impossible to meet the requirements of wind power plant.Double fed induction generators (Doubly Fed Induction
Generater, DFIG) the variable speed constant frequency operation characteristic, the parameter that have with it one system such as can adjust with the reactive power of system
Column advantage has obtained more and more favors, has become the mainstream generator of wind power plant at present.
With the continuous expansion of wind power plant scale, wind-powered electricity generation network bring problem is also gradually highlighted.On the one hand, due to wind-powered electricity generation
Itself has the characteristics such as intermittence, randomness, will lead to the unstability increase of main operation of power networks when itself and while becoming owner of power grid, greatly
Scale wind-electricity integration stability problem oneself become restrict Wind Power Development bottleneck.On the other hand, although in the industry to Wind turbines and
The modeling of wind power plant has had preliminary exploration and research, but as the further development of wind power technology and wind power plant are multiple
The promotion of miscellaneous degree, existing modeling method are difficult to carry out comprehensively, effectively analyzing to wind-powered electricity generation network.It is met in face of current Wind Power Development
The wide application prospect of the predicament and wind power technology arrived, the related research that practitioner falls over each other to put into wind power technology in the industry are worked as
In, so that Wind turbines and the modeling and simulation of wind power plant become the hot spot of grid simulation research.
In the real-timedigital simulation of new energy and novel electron equipment under bulk power grid background, since device is to system frequency
The raising of rate influence degree, requirement of the electro-magnetic transient real-time simulation to simulation step length have reached musec order, this is to electro-magnetic transient
The design of real-time emulation system brings stern challenge.It is traditional based on high-performance server with the reduction of simulation step length
Electromagnetic transient simulation system be extremely difficult to requirement of real-time, people start to seek new electromagnetic transient simulation scheme.State at present
Inside and outside major part about the research of the modeling and simulation of wind power plant and blower is built on the off-line simulation software based on PC
And carry out simulating, verifying.
Wherein FPGA (field programmable gate array, Field Programmable Gate Array, abbreviation FPGA) due to
Its restructural and highly-parallel characteristic extremely agrees with the demand of electromagnetic transient simulation system, therefore FPGA is by more and more
It has been applied to this field of electromagnetic transient simulation.Currently, the blower emulation based on FPGA is concentrated mainly on the operation control of blower
Systematic research.Compared with high-performance server, FPGA can make electro-magnetic transient system can in conjunction with the parallelization framework of hardware
To easily reach the simulation step length of Microsecond grade, therefore FPGA is very suitable for putting down as the electromagnetic transient simulation of doubly fed induction generator
Platform.But the resource on FPGA plate is still limited, in order to realize fairly large electromagnetic transient simulation system under same asset
Higher simulation accuracy is united and kept, needs to design suitable circuit model according to the characteristics of FPGA architecture, so as to height
Efficiency utilizes the hardware resource on FPGA plate.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of doubly fed induction generators based on FPGA
Electromagnetical transient emulation method and analogue system.
One, the proposition of design scheme.
In view of the proposition of foregoing problems, the electro-magnetic transient that the present invention devises a kind of doubly fed induction generator based on FPGA is imitative
True method, this method carry out real-time simulation to wind-force electrical machinery under the single precision floating datum precision for guaranteeing 754 standard of IEEE, and
And it uses High Level Synthesis technology (High Level Synthesis, HLS) and has fast implemented doubly fed induction generator parameter more
New module significantly shortens the development cycle of FPGA hardware system.
This method efficiently utilizes hardware resource on FPGA plate, is divided into four to the electromagnetic transient simulation of doubly fed induction generator
Module: wind-force electrical machinery data memory module, wind-force electrical machinery Simulation Control module, wind-force electrical machinery parameter updating module and wind-force electrical machinery
Internal current merging module realizes the doubly fed induction generator Simulation Calculation for possessing higher simulation accuracy, be able to satisfy compared with
The emulation experiment demand of more true application scenarios.
Verilog hardware description language is used in wind-force electrical machinery data memory module and wind-force electrical machinery Simulation Control module
It designs and develops, High Level Synthesis technological development is used in wind-force electrical machinery parameter updating module, takes into account the accuracy of analogue system
With flexibility.
Two, to achieve the goals above, the technical solution adopted by the present invention is as follows.
A kind of electromagnetical transient emulation method of the doubly fed induction generator based on FPGA, which is characterized in that method includes following
Step:
Step 1, server end sends configuration parameter and initialization data, the end FPGA carry out parsing storage to these data,
Detailed process is as follows:
Step 1-1, FPGA and server establish communication link, carry out data interaction by Aurora agreement；
Step 1-2, FPGA are communicated with server, and obtain that the main circuit emulation containing doubly fed induction generator needs matches
Set parameter and initialization data；
Wherein, configuration parameter and initialization data include:
The network node initialization voltage data of artificial network；
The doubly fed induction generator number of emulation；
In artificial network where each blower and network node number information；
The position of mass block locating for the mass block number of each wind-force electrical machinery, rotor, stator resistance, stator d axis are initially electric
Pressure, stator q axis initial voltage and stator q axis initial current；
Step 1-3 obtains the initialization data of artificial network, by network matrix number, system subnet from system bus
Number, emulation duration, network-initiating node voltage array, network-initiating node electric current storage of array are in common storage area；
Step 1-4, from system bus obtain doubly fed induction generator initialization data, by wind-force electrical machinery component number,
Emulation angular frequency, wind-force electrical machinery mass block number, mass block locating for rotor position be stored in wind-force electrical machinery data memory module
Global variable district, by stator d shaft voltage, stator q shaft voltage, 0 shaft voltage of stator, stator d axis rotational voltage, stator d axis electricity
Stream, stator q axis rotational voltage, stator q shaft current, rotor d shaft voltage, rotor q shaft voltage, 0 shaft voltage of rotor are stored in wind-force
The state variable area of motor data memory module, by the calculating angle of wind-force electrical machinery, the electromagnetic torque of wind-force electrical machinery, wind-force electrical machinery
Machine torque, wind-force electrical machinery the mechanical output allocation proportion of each mass block be stored in the non-of wind-force electrical machinery data memory module
State variable area；
Step 2, the electromagnetic transient simulation part of doubly fed induction generator includes four modules: storage inside module, control mould
Block, wind-force electrical machinery parameter updating module and internal current merging module；Wind-force electrical machinery parameter updating module is obtained according to node serial number
Take network node voltage, and by Park matrixing be calculated the wind-force electrical machinery of current simulation step length stator d shaft voltage,
Stator q shaft voltage, 0 shaft voltage value of stator；
Step 3, wind-force electrical machinery parameter updating module is currently imitated according to 0 shaft voltage of stator and 0 axis impedance computation of stator
The 0 shaft current value of stator of true step-length；
Step 4, wind-force electrical machinery parameter updating module updates the stator d shaft current and stator q shaft current of current simulation step length
Value；
Step 5, wind-force electrical machinery parameter updating module carries out rotation equation solution, and detailed process is as follows:
Step 5-1 updates the stator magnetic linkage and rotor flux for calculating current simulation step length；
Step 5-2 updates the electromechanics torque for calculating current simulation step length and electromagnetic torque；
Step 5-3 updates the rotor velocity for calculating current simulation step length,
Step 6, circulation executes step 5-1 to step 5-3, until the rotor velocity of current simulation step length is restrained；
Step 7, wind-force electrical machinery parameter updating module updates the rotor velocity predicted value of current simulation step length；
Step 8, wind-force electrical machinery parameter updating module is calculated according to stator d shaft current, stator q shaft current, 0 shaft current of stator
Obtain the stator a shaft current, stator b shaft current, stator c-axis current value of current simulation step length；And according to rotor angle and rotor
Electric current updates the rotor three-phase current value for calculating current simulation step length；
Step 9, wind-force electrical machinery parameter updating module updates the equivalent parallel-current source of the wind-force electrical machinery of current simulation step length
Value；
Step 10, wind-force electrical machinery node current merging module is in parallel to the equivalence of all wind-force electrical machineries of current simulation step length
Current source merges；
Step 11, the equivalent branch current of wind-force electrical machinery and merging for the equivalent current source of other elements are completed, is obtained more
Network node electric current after new；
Step 12, by carrying out matrix-vector multiplication calculating to network admittance matrix and network node electric current, after obtaining update
Network node voltage value；
Step 13, judge whether current simulation step length reaches the emulation of setting and terminate step-length, if so, terminating emulation；It is no
Then, return step 2 is iterated calculating.
In the step 1-4, the initialization data of the doubly fed induction generator stored on FPGA uses the single essence of IEEE 754
Spend the data of floating number standard.
Preferably, in step 2, wind-force electrical machinery parameter updating module is realized using High Level Synthesis technology.
Preferably, in step 2, when calculating stator d shaft voltage, q shaft voltage and 0 shaft voltage, after hardware optimization
Park matrix transformation method is calculated.
Preferably, in steps of 5, the rotation equation that wind-force electrical machinery is calculated using iterative calculation method, makes wind-force with this
The rotor velocity of motor is restrained.
A kind of analogue system for implementing above-mentioned electromagnetical transient emulation method is additionally provided, the analogue system includes the portion CPU
Divide and FPGA portion, the server of the CPU part include common storage area and wind-force electrical machinery memory module, the FPGA portion
Including storage inside module, control module, fan parameter update module and internal current merging module, the FPGA portion and institute
The server for stating CPU part is communicatively coupled and carries out node voltage and solves and system power merging.
Preferably, the state variable initialization value that the server of the CPU part receives wind-force electrical machinery system bus carries out
Wind-force electrical machinery initialization calculates, and carries out equivalent circuit according to initialization data and calculate to obtain Equivalent Circuit Parameter, according to matter
It measures parameter and carries out blower mass calculating acquisition mass parameter, it is normal that blower is carried out according to voltage parameter, rotational parameters and matrix parameter
Coefficient, which calculates, obtains magnetic linkage parameter, carries out global initialization data calculating and obtains state parameter and non-state parameter；The FPGA
Part carries out variable update according to the parameter that the server of CPU part calculates and calculates the state variable for obtaining wind-force electrical machinery and non-shape
State variable, and Injection Current is carried out according to the state variable and non-state variable and calculates acquisition equal currents and new state change
Amount is completed with this by wind-force electrical machinery more new system Injection Current source.
Preferably, the wind-force electrical machinery memory module includes global variable district, state variable area and non-state variable area.
Compared with prior art, the beneficial effects of the present invention are:
1. using the single precision floating datum of 754 standard of IEEE in the electromagnetic transient simulation part of wind-force electrical machinery, guaranteeing to imitate
While true precision, the hardware resource consumption of doubly fed induction generator emulation is reduced, and become using Park to calculating logic
It changes, reduces and compute repeatedly bring resource consumption, therefore the present invention can realize the double of greater number on one block of FPGA plate
Present the real-time simulation of wind-force electrical machinery.
2. in the electromagnetic transient simulation system based on FPGA, more using High Level Synthesis technological development wind-force electrical machinery parameter
New module, while keeping wind-force electrical machinery simulation process correct shorten hardware circuit design and develop the time.
3. artificial circuit calculates step clear and definite, convenient for extension, control logic is simple.
Detailed description of the invention
Fig. 1 is doubly fed induction generator simulation contact surface；
Fig. 2 is doubly fed induction generator electromagnetic transient simulation architecture diagram；
Fig. 3 is fast implementing for doubly fed induction generator hardware model；
Fig. 4 is the hardware calculation optimization of Park matrixing；
Fig. 5 is that rotation equation iterates to calculate flow chart.
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 scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The electromagnetical transient emulation method and analogue system of doubly fed induction generator proposed by the present invention based on FPGA, referring to figure
1- Fig. 5 is illustrated in conjunction with hardware circuit and operation process:
Step 1, by decoupling doubly fed induction generator part and peripheral circuit, the Equivalent Calculation of doubly fed induction generator is established
Model is used for circuit simulation, and the electromechanical transient of doubly fed induction generator is partially disposed on server and carries out circuit simulation, will
The electro-magnetic transient of doubly fed induction generator, which is partially disposed on FPGA, carries out real-time simulation.
As shown in Figure 1, the main calculation process in wind-driven generator part can be divided into three steps: step 1 is wind-force hair
Motor initialization calculates, and step 2 is the calculating of wind-driven generator state variable and non-state variable, and step 3 is wind-power electricity generation
Machine more new system Injection Current source calculates.In these three steps, since the module in step 1 mainly calculates wind-power electricity generation
The parameter information of the needs such as machine rotation equation and equivalent circuit solution, it is smaller for the delay factor of simulation hardware, therefore,
The initialization section of wind-driven generator in step 1 calculated on the CPU of High Performance Server, herein basis
On, the initialization data calculated is transferred on FPGA after framing by optical fiber interface, and piecemeal is stored on FPGA
BRAM in.Since the calculating logic in step 2 and step 3 is than comparatively dense, and this part logic is all in wind-power electricity generation
In the critical path of machine simulation hardware, therefore, by the calculating section and wind electricity of wind-force electrical machinery state variable and non-state variable
It is Hardware I P that machine more new system Injection Current source module is rapid integrated using High Level Synthesis technology, is integrated in the electricity based on FPGA
In magnetic transient emulation system.
Send configuration parameter and initialization data in server end first in simulation process, the end FPGA to these data into
Row parsing storage, detailed process is as follows:
Step 1-1, FPGA and server establish communication link, carry out data interaction by Aurora agreement.
Step 1-2, FPGA are communicated with server, and obtain that the main circuit emulation containing doubly fed induction generator needs matches
Set parameter and initialization data；Configuration parameter and initialization data include: the network node initialization voltage data of artificial network；
The doubly fed induction generator number of emulation；In artificial network where each blower and network node number information；Each wind electricity
The position of mass block locating for the mass block number of machine, rotor, stator resistance, stator d axis initial voltage, stator q axis initial voltage,
Stator q axis initial current etc..
Step 1-3 obtains the initialization data of artificial network, by network matrix number, system subnet from system bus
Number, emulation duration, network-initiating node voltage array, network-initiating node electric current array etc. are stored in common storage area.
Step 1-4, from system bus obtain doubly fed induction generator initialization data, by wind-force electrical machinery component number,
Emulation angular frequency, wind-force electrical machinery mass block number, the parameters such as position of mass block locating for rotor are stored in wind-force electrical machinery data and deposit
The global variable district for storing up module, by stator d shaft voltage, stator q shaft voltage, 0 shaft voltage of stator, stator d axis rotational voltage, stator
The parameters such as d shaft current, stator q axis rotational voltage, stator q shaft current, rotor d shaft voltage, rotor q shaft voltage, 0 shaft voltage of rotor
It is stored in the state variable area of wind-force electrical machinery data memory module, the electromagnetism of the calculating angle of wind-force electrical machinery, wind-force electrical machinery is turned
The parameters such as the mechanical output allocation proportion of each mass block of square, the machine torque of wind-force electrical machinery, wind-force electrical machinery are stored in wind electricity
The non-state variable area of machine data memory module.
Step 2, as shown in Fig. 2, the electromagnetic transient simulation part of doubly fed induction generator includes four modules: storage inside mould
The calculating of block, control module, fan parameter update module and internal current merging module, this part realizes the step in Fig. 1
Two and step 3 in calculating logic.The parameter updating module of wind-force electrical machinery uses High Level Synthesis technology (HLS) and is set
Meter.
Fig. 3 illustrates the HLS development process of parameter updating module, when being designed, first has to the C stage die of blower
Type is rewritten into the code spice that HLS tool can integrate, and to carry out function accuracy verifying to revised code；Then again
The High Level Synthesis of C engineering is carried out using HLS tool, and the hardware identification code after synthesis is optimized and software-hardware synergism one
The verifying of cause property；Hardware identification code is finally packaged into Hardware I P again, and the library Hardware I P is added and is called for designer；Wind-force electrical machinery ginseng
Number update module obtains network node voltage according to the node serial number of wind-force electrical machinery, and is calculated and is worked as by Park matrixing
The stator d shaft voltage of preceding simulation step length, stator q shaft voltage, 0 shaft voltage value of stator.
As shown in figure 4, hardware circuit carry out Park matrixing when, the coefficient outside matrix it is equivalent arrive internal matrix,
And constant element is calculated in advance, introduce constant λ1、λ2With λ 5.In addition to crossing macroelement, for the angle for including in matrix
Two common element λ are extracted in transformation calculations part3And λ4, reduction computes repeatedly, and reduces hardware resource consumption.
Park matrix before optimization are as follows:
Introduce constant λ1、λ2、λ5And variable λ3、λ4Afterwards, the Park matrix after hardware optimization are as follows:
Wherein,
Step 3, wind-force electrical machinery parameter updating module is calculated according to parameters such as 0 axis impedances of 0 shaft voltage of stator and stator
The 0 shaft current value of stator of current simulation step length.
Step 4, wind-force electrical machinery parameter updating module updates the stator d shaft current and stator q axis for calculating current simulation step length
Current value.
Step 5, wind-force electrical machinery parameter updating module carries out rotation equation solution, as shown in figure 5, being counted using iterative method
It calculates and solves, detailed process is as follows:
Step 5-1 updates the stator magnetic linkage and rotor flux for calculating current simulation step length；
Step 5-2 updates the electromechanics torque for calculating current simulation step length and electromagnetic torque；
Step 5-3 updates the rotor velocity for calculating current simulation step length.
Specifically, the expression formula of rotation equation is as follows:
J is rotary inertia in formula, and ω is rotor velocity, and D is the damped coefficient for considering viscous effect and wind-force friction,
TmAnd TeIt is the machine torque and electromagnetic torque of motor respectively.
As shown in figure 5, needing to carry out flux linkage calculation and torque calculation first when carrying out the solution of rotation equation；Then will
The machine torque and electromagnetic torque being calculated are used for the solution of rotation equation, and then obtain rotor velocity；Then it needs to carry out
Revolving speed convergence judgement successively carries out magnetic linkage meter if it has not, then returning if judgement convergence, completes the solution of rotation equation again
Calculation, torque calculation, rotation equation solve and carry out revolving speed convergence judgement, so repeat, until completing iteration.
Step 6, circulation executes step 5-1 to step 5-3, until the rotor velocity of current simulation step length is restrained.
Step 7, wind-force electrical machinery parameter updating module updates the rotor velocity predicted value of current simulation step length.
Step 8, wind-force electrical machinery parameter updating module is joined according to stator d shaft current, stator q shaft current, 0 shaft current of stator etc.
The stator a shaft current, stator b shaft current, stator c-axis current value of current simulation step length is calculated in number；And according to rotor angle
The rotor three-phase current value for calculating current simulation step length is updated with parameters such as rotor currents.
Step 9, wind-force electrical machinery parameter updating module updates the equivalent parallel-current source of the wind-force electrical machinery of current simulation step length
Value.
Step 10, wind-force electrical machinery node current merging module is in parallel to the equivalence of all wind-force electrical machineries of current simulation step length
Current source merges.
Step 11, the equivalent branch current of wind-force electrical machinery and merging for the equivalent current source of other elements are completed, is obtained more
Network node electric current after new.
Step 12, by carrying out matrix-vector multiplication calculating to network admittance matrix and network node electric current, after obtaining update
Network node voltage value.
Step 13, judge whether current simulation step length reaches the emulation of setting and terminate step-length, if so, terminating emulation；It is no
Then, return step 2 is iterated calculating.
Referring to Fig. 1, the present invention also provides a kind of analogue system for implementing above-mentioned electromagnetical transient emulation method, analogue systems
Including CPU part and FPGA portion, the server of the CPU part includes common storage area and wind-force electrical machinery memory module, institute
Stating FPGA portion includes storage inside module, control module, fan parameter update module and internal current merging module, described
FPGA portion be communicatively coupled with the server of the CPU part and carry out node voltage solve and system power merge.
Wherein, the wind-force electrical machinery memory module includes global variable district, state variable area and non-state variable area.
Further, the CPU part server receive wind-force electrical machinery system bus state variable initialization value into
The initialization of row wind-force electrical machinery calculates, and according to initialization data progress equivalent circuit calculating to obtain Equivalent Circuit Parameter, according to
Mass parameter carries out blower mass and calculates acquisition mass parameter, carries out blower according to voltage parameter, rotational parameters and matrix parameter
Constant coefficient, which calculates, obtains magnetic linkage parameter, carries out global initialization data calculating and obtains state parameter and non-state parameter；It is described
The parameter that FPGA portion is calculated according to the server of CPU part carry out variable update calculate the state variable for obtaining wind-force electrical machinery and
Non- state variable, and Injection Current is carried out according to the state variable and non-state variable and calculates acquisition equal currents and new shape
State variable is completed with this by wind-force electrical machinery more new system Injection Current source.
Above system carries out electromagnetic transient simulation analysis according to the method that this application provides, and can utilize limited on FPGA plate
Hardware resource realize the doubly fed induction generator Simulation Calculation for possessing higher simulation accuracy, meet and largely really answer
With the emulation experiment demand of scene.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of electromagnetical transient emulation method of the doubly fed induction generator based on FPGA, which is characterized in that method includes following step
It is rapid:
Step 1, server end sends configuration parameter and initialization data, the end FPGA carry out parsing storage to these data, specifically
Process is as follows:
Step 1-1, FPGA and server establish communication link, carry out data interaction by Aurora agreement；
Step 1-2, FPGA are communicated with server, obtain the configuration ginseng that the main circuit emulation containing doubly fed induction generator needs
Several and initialization data；
Wherein, configuration parameter and initialization data include:
The network node initialization voltage data of artificial network；
The doubly fed induction generator number of emulation；
In artificial network where each blower and network node number information；
The position of mass block locating for the mass block number of each wind-force electrical machinery, rotor, stator resistance, stator d axis initial voltage,
Stator q axis initial voltage and stator q axis initial current；
Step 1-3, from system bus obtain artificial network initialization data, by network matrix number, system subnet number,
Duration, network-initiating node voltage array, network-initiating node electric current storage of array are emulated in common storage area；
Step 1-4 obtains the initialization data of doubly fed induction generator from system bus, by wind-force electrical machinery component number, emulation
Angular frequency, wind-force electrical machinery mass block number, mass block locating for rotor position be stored in the complete of wind-force electrical machinery data memory module
Office's variable range by stator d shaft voltage, stator q shaft voltage, 0 shaft voltage of stator, stator d axis rotational voltage, stator d shaft current, is determined
Sub- q axis rotational voltage, stator q shaft current, rotor d shaft voltage, rotor q shaft voltage, 0 shaft voltage of rotor are stored in wind-force electrical machinery number
According to the state variable area of memory module, by the calculating angle of wind-force electrical machinery, the electromagnetic torque of wind-force electrical machinery, wind-force electrical machinery machinery
Torque, wind-force electrical machinery each mass block mechanical output allocation proportion be stored in wind-force electrical machinery data memory module non-state become
Measure area；
Step 2, the electromagnetic transient simulation part of doubly fed induction generator includes four modules: storage inside module, control module, wind
Force motor parameter updating module and internal current merging module；Wind-force electrical machinery parameter updating module obtains network according to node serial number
Node voltage, and stator d shaft voltage, the stator q of the wind-force electrical machinery of current simulation step length is calculated by Park matrixing
Shaft voltage, 0 shaft voltage value of stator；
Step 3, wind-force electrical machinery parameter updating module obtains currently emulating step according to 0 shaft voltage of stator and 0 axis impedance computation of stator
Long 0 shaft current value of stator；
Step 4, wind-force electrical machinery parameter updating module updates the stator d shaft current and stator q shaft current value of current simulation step length；
Step 5, wind-force electrical machinery parameter updating module carries out rotation equation solution, and detailed process is as follows:
Step 5-1 updates the stator magnetic linkage and rotor flux for calculating current simulation step length；
Step 5-2 updates the electromechanics torque for calculating current simulation step length and electromagnetic torque；
Step 5-3 updates the rotor velocity for calculating current simulation step length,
Step 6, circulation executes step 5-1 to step 5-3, until the rotor velocity of current simulation step length is restrained；
Step 7, wind-force electrical machinery parameter updating module updates the rotor velocity predicted value of current simulation step length；
Step 8, wind-force electrical machinery parameter updating module is calculated according to stator d shaft current, stator q shaft current, 0 shaft current of stator
Stator a shaft current, the stator b shaft current, stator c-axis current value of current simulation step length；And according to rotor angle and rotor current
Update the rotor three-phase current value for calculating current simulation step length；
Step 9, wind-force electrical machinery parameter updating module updates the equivalent parallel-current source value of the wind-force electrical machinery of current simulation step length；
Step 10, equivalent parallel-current of the wind-force electrical machinery node current merging module to all wind-force electrical machineries of current simulation step length
Source merges；
Step 11, the equivalent branch current of wind-force electrical machinery and merging for the equivalent current source of other elements are completed, after obtaining update
Network node electric current；
Step 12, by carrying out matrix-vector multiplication calculating to network admittance matrix and network node electric current, updated net is obtained
Network node voltage value；
Step 13, judge whether current simulation step length reaches the emulation of setting and terminate step-length, if so, terminating emulation；Otherwise, it returns
It returns step 2 and is iterated calculating.
2. electromagnetical transient emulation method according to claim 1, which is characterized in that in FPGA in the step 1-4
The initialization data of the doubly fed induction generator of upper storage uses the data of IEEE754 single precision floating datum standard.
3. electromagnetical transient emulation method according to claim 1, which is characterized in that the wind-force electrical machinery in the step 2
Parameter updating module is realized using High Level Synthesis technology.
4. electromagnetical transient emulation method according to claim 3, which is characterized in that the wind-force electrical machinery in the step 2
Parameter updating module is optimized when carrying out High Level Synthesis design using instruction pipeline, shortens the delay of module calculating with this.
5. electromagnetical transient emulation method according to claim 2, which is characterized in that the wind-force electrical machinery in the step 2
Parameter updating module use multi-set parallel strategy, with this shorten wind-force electrical machinery number it is more when computation delay.
6. electromagnetical transient emulation method according to claim 1, which is characterized in that calculate stator d in the step 2
When shaft voltage, q shaft voltage and 0 shaft voltage, calculated using the Park matrix transformation method after hardware optimization.
7. electromagnetical transient emulation method according to claim 1, which is characterized in that use iteration in the step 5
Calculate the rotation equation for solving wind-force electrical machinery.
8. a kind of analogue system for implementing any one of -7 electromagnetical transient emulation methods according to claim 1, it is characterised in that:
The analogue system includes CPU part and FPGA portion, and the server of the CPU part includes common storage area and wind-force electrical machinery
Memory module, the FPGA portion include that storage inside module, control module, fan parameter update module and internal current merge
The server of module, the FPGA portion and the CPU part is communicatively coupled and carries out node voltage solution and system electricity
Stream merges.
9. analogue system according to claim 8, it is characterised in that: the server of the CPU part receives wind-force electrical machinery
The state variable initialization value of system bus carries out wind-force electrical machinery initialization and calculates, and carries out equivalent circuit according to initialization data
Calculate to obtain Equivalent Circuit Parameter, according to mass parameter carry out blower mass calculate obtain mass parameter, according to voltage parameter,
Rotational parameters and matrix parameter carry out blower constant coefficient and calculate acquisition magnetic linkage parameter, and the global initialization data of progress, which calculates, obtains shape
State parameter and non-state parameter；The FPGA portion carries out variable update calculating according to the parameter that the server of CPU part calculates
The state variable and non-state variable of wind-force electrical machinery are obtained, and Injection Current is carried out according to the state variable and non-state variable
It calculates acquisition equal currents and new state variable is completed with this by wind-force electrical machinery more new system Injection Current source.
10. analogue system according to claim 8, it is characterised in that: the wind-force electrical machinery memory module includes global becomes
Measure area, state variable area and non-state variable area.
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