CN104579060B - The indirect power control method of cage-type rotor brushless dual-feedback wind power generator - Google Patents
The indirect power control method of cage-type rotor brushless dual-feedback wind power generator Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A kind of indirect power control method for cage-type rotor brushless dual-feedback wind power generator, control method including cage-type rotor brushless dual-feedback wind power generator active power and reactive power, especially active power and the parsing relation and the cage-type rotor brushless dual-feedback wind power generator active power and the Control system architecture of reactive power of structure of controling winding magnetic linkage.The present invention solves the control problem that the grid-connected rear active power tracking wind speed of cage-type rotor brushless dual-feedback wind power generator realizes maximal power tracing and reactive power.This control system only needs to the resistance of two stator winding, and the required parameter of electric machine is few, without rotating coordinate transformation, and the control of cage-type rotor brushless dual-feedback wind power generator active power and reactive power is realized under rest frame, and control method is simple, and effect is obvious.
Description
Technical field
The present invention is relevant with the indirect power control method of cage-type rotor brushless dual-feedback wind power generator, is in more detail
In a kind of control of active power and reactive power that can be realized under rest frame after brushless dual-feedback wind power generator is grid-connected
Method processed.
Background technology
Wind-power electricity generation is the effective means for solving the energy and environmental problem currently protruded, thus obtained most attention and
Large-scale develop and utilize, be the growth rate most fast energy in the world at present.Wind power generating set is commonly located at mankind's activity ratio
Outlying districts such as less high mountain, wilderness, island, and by irregular wind-force and powerful formation wind action, in addition residing nature
Environmental Communication inconvenience, once breaking down, is repaired very difficult.Therefore the requirement to its reliability be significantly larger than it is other electrically and
Plant equipment.Therefore the wind-driven generator and its control technology of development high reliability have very heavy for the development of wind power technology
The realistic meaning wanted.
Brushless dual-feed motor is a kind of New-type electric machine received a lot of attention in recent years, and its structure is that have double winding on stator,
I.e. power winding and controling winding, connect power network and frequency converter respectively；Rotor uses special cage modle or magnetoresistive structures, this hair
Bright be directed on cage-type rotor, rotor does not have brush and slip ring, substantially increases functional reliability, is particularly suited for use in variable speed constant frequency
Wind power generation field.With current variable-speed constant-frequency wind power generation field it is most widely used there are brush double fed induction generators to compare, nothing
The operation action of brush double-fed generator is similar with its, in addition to there is all advantages of brush double fed induction generators, and also one
Individual particular advantages, i.e., realized in the case of brushless double-fed run, drastically increase the reliability of system, can more meet without or
Reduced-maintenance working environment.
In variable-speed constant-frequency wind power generation field, for grid-connected wind power machine, wind electric energy conversion effect is being improved
While rate, it should be able to also realize that active power tracking wind speed realizes the control of maximal power tracing and reactive power.It is existing
Vector control method is applied to the report of cage-type rotor brushless dual-feedback wind power generator in document（Shao S Y, Abdi
E, Barati F, McMahon R. Stator-Flux-Oriented Vector Control for Brushless
Doubly Fed Induction Generator[J]. IEEE Transactions on Industrial
Electronics, 2009, 56(10): 4220-4228）, but this method realizes active and nothing in two-phase rotating coordinate system
The control of work(power, thus Magnetic oriented and rotating coordinate transformation are needed, cause system architecture complicated, and due to Magnetic oriented
Precision directly influences the performance of motor, thus proposes higher requirement to the precision of Magnetic oriented.For such case, sheet
Invention proposes cage-type rotor brushless dual-feedback wind power generator indirect power control method.This method realizes have in rest frame
The control of work(and reactive power, with simple, the required parameter of electric machine without rotating coordinate transformation and Magnetic oriented, system architecture
It is few, the excellent advantage of quiet, dynamic property.
The content of the invention
The proposition of problem：The problem of for brushless dual-feedback wind power generator vector control method system architecture complexity, proposition
A kind of indirect power control method for cage-type rotor brushless dual-feedback wind power generator.
What the present invention took is a kind of indirect power control method for cage-type rotor brushless dual-feedback wind power generator, bag
The control method of active power and reactive power is included, realizes that the control method first has to set up active power and controling winding magnetic linkage
Between relational expression, such as（7）It is shown：
（7）
Formula（7）In,PFor active power, L hp =N r *M spr /2,L hc =N r *M scr /2, whereinN r For cage-type rotor nested cell
Number,M spr For the mutual inductance amplitude of each unit of power winding Yu rotor windings,M scr For controling winding and rotor windings each
The mutual inductance amplitude of unit；L p 、 L c WithL r Respectively power winding self-induction, controling winding self-induction and rotor windings self-induction；For
Controling winding flux linkage vector；For power winding voltages vector；θ up Withθ ψc Respectively power winding voltages vector control around
The phase angle of group flux linkage vector；It is described（7）In formula, power winding voltages vector, the parameter of electric machineL hp 、L hc 、L p 、L c WithL r It is
Constant, by formula（7）In obtain phase angle by controlling controling winding flux linkage vectorAnd amplitudeTo control active powerP；
Next to that building cage-type rotor brushless dual-feedback wind power generator indirect power control system, active power and nothing are realized
The closed-loop control of work(power；
（1）According to formula（7）In controling winding flux linkage vectorAnd active powerPBetween relation, using active
Power set-pointP * With calculated valuePBy active pi regulator（5）Output control winding magnetic linkage dynamic phasing increment, by its
With static phase increment DeltaX st,Addition obtains controling winding magnetic linkage phase increment ΔX.Reactive power set-pointQ* with calculated valueQ
By idle pi regulator（16）Output control winding magnetic linkage amplitude gives；Again by controling winding magnetic linkage amplitudeAnd meter
Calculation valueThrough magnetic linkage pi regulator（10）Output control winding magnetic linkage amplitude incrementk s ；
（2）Based on above-mentioned steps（1）Cage-type rotor brushless dual-feedback wind power generator indirect power control system is built, is realized
The process of the control method is as follows：
1）Cage-type rotor brushless dual-feedback wind power generator passes through grid-connected switch（18）It is incorporated into the power networks；
2）Observe controling winding and power winding voltages, the A phases of electric current and B phase components respectively under three-phase static coordinate systemu ac 、u bc 、u ap 、u bp 、i ac 、i bc 、i ap Withi bp , 3/2 converter is passed through to above-mentioned physical quantity（13）Coordinate transform is carried out, is controlled
Winding and power winding processed is eachαβVoltage and current under rest frameu αc 、u βc 、u αp 、u βp 、i αc 、i βc 、i αp Withi βp ；
3）Utilizeu αc 、u βc 、i αc Withi βc Pass through controling winding flux linkage calculation（12）Calculate controling winding magnetic linkage componentψ αc 、ψ βc , according toψ αc Withψ βc Calculate controling winding magnetic linkage amplitude；
4）Calculated by active power, reactive power（15）Calculate active power and reactive power；
5）Pass through controling winding magnetic linkage static phase incremental computations（7）Obtain controling winding static phase increment DeltaX st , lead to
Cross active-power P I regulator（5）Obtain controling winding magnetic linkage dynamic phasing increment DeltaX d , sum of the two is next sampling week
Phase T pwm Interior controling winding magnetic linkage phase increment ΔX；
6）Utilize the set-point of reactive powerQ * With calculated valueQBy idle pi regulator（16）Output control winding magnetic linkage
Amplitude gives, and calculated valueThrough magnetic linkage pi regulator（10）Output control winding magnetic linkage amplitude incrementk s ；Utilize control
Winding magnetic linkage componentψ αc 、ψ βc , controling winding magnetic linkage amplitude incrementk s With controling winding magnetic linkage phase increment ΔXPass through controling winding
Magnetic linkage increment Deltaψ s Calculate（8）Obtain controling winding magnetic linkage increment Deltaψ αc 、Δψ βc ；
7）Utilize controling winding magnetic linkage increment Deltaψ αc 、Δψ βc , pass through controling winding voltageu αc 、u βc Calculate（11）, obtain down
A cycleT pwm Interior required voltage vectoru αc 、u βc ；
8）SVPWM generators（3）According tou αc Withu βc Modulated signal is generated, and passes through two way convertor（2）Motor side become
Flow device control brushless double feed wind-force electrical machinery（14）Controling winding.
A kind of indirect power control method for cage-type rotor brushless dual-feedback wind power generator, compared with prior art,
The relation between cage-type rotor brushless dual-feedback wind power generator active power and controling winding magnetic linkage is derived first, has been devised
Work(power controller, constructs cage-type rotor brushless dual-feedback wind power generator indirect power control system.This control system is used
The parameter of electric machine be only two stator winding resistances, the parameter of electric machine used is few, without rotating coordinate transformation and Magnetic oriented, quiet
Only coordinate system realizes the control of brushless dual-feedback wind power generator active power and reactive power, and system architecture is simple.
Brief description of the drawings
Fig. 1 is the apparatus and system structural representation that the inventive method is based on.
Fig. 2~Fig. 9 is the inventive method cage-type rotor brushless dual-feedback wind power generator indirect power control system in fitful wind
In the case of, it is zero to keep power winding reactive power, and active power tracking wind speed realizes emulation during maximal power tracing control
As a result.
Figure 10~Figure 17 is the inventive method cage-type rotor brushless dual-feedback wind power generator indirect power control system gradually
In the case of becoming wind, power winding active power tracking wind speed realizes maximal power tracing control, and reactive power is mutated from 0var
To -500var simulation result.
In figure：1：Wave filter；2：Two way convertor；3：SVPWM generators；4：Comparator；5：Active pi regulator；6：Plus
Musical instruments used in a Buddhist or Taoist mass；7：Controling winding magnetic linkage static phase incremental computations；8：Controling winding magnetic linkage incremental computations；9：Comparator；10：Magnetic linkage PI
Adjuster；11：Controling winding voltage, calculating；12：Controling winding flux linkage calculation；13：3/2 converter；14：Brushless double feed wind-force
Generator；15：Active power, reactive power are calculated；16：Idle pi regulator；17：Comparator；18：Grid-connected switch；19：Gear
Case；20：Wind energy conversion system.
Embodiment
The embodiment to the present invention is further detailed below：
Such as Fig. 1, realize that a kind of cage-type rotor brushless dual-feedback wind power generator indirect power that is used for of the present invention is controlled
Method be the apparatus and system structure based on brushless dual-feedback wind power generator indirect power control system, the device is by filtering
Device 1, two way convertor 2（Two way convertor 2 uses two-way IGBT full bridge structures, is divided into power network side converter and motor side unsteady flow
Device）, SVPWM generators 3, comparator 4, active pi regulator 5, adder 6, controling winding magnetic linkage static phase incremental computations 7,
Controling winding magnetic linkage incremental computations 8, comparator 9, magnetic linkage pi regulator 10, controling winding voltage, calculating 11, controling winding magnetic linkage
12,3/2 converter 13 is calculated, brushless dual-feedback wind power generator 14, active power, reactive power calculate 15, idle pi regulator
16, comparator 17, grid-connected switch 18, gear-box 19 and wind energy conversion system 20 are constituted；Six output ends connection of SVPWM generators 3 is double
The control end of motor side converter into current transformer 2, the set-point of active powerP* 15 are calculated with active power, reactive power
OutputPThrough comparator 4 relatively after as active pi regulator 5 input, the output of active pi regulator 5 and the one end of adder 6
Input is connected, and another positive input of adder 6 is the output of controling winding magnetic linkage static phase incremental computations 7, addition
The output end of device 6 is an input of controling winding magnetic linkage incremental computations 8, and 8 other 3 inputs are controling winding magnetic linkage respectively
Calculate 12 output and the output of magnetic linkage pi regulator 10.The set-point of reactive powerQ* calculated with active power, reactive power
15 outputQAs the input of idle pi regulator 16 after comparator 17, the output of idle pi regulator 16 is comparator 9
One positive input, another negative input of comparator 9 is an output of controling winding flux linkage calculation 12, comparator
9 output is the input of magnetic linkage pi regulator 10, and magnetic linkage pi regulator 10 is output as the one of controling winding magnetic linkage incremental computations 8
Individual input.The output of controling winding magnetic linkage incremental computations 8 and controling winding voltage, calculate 11 input and be connected, 11 output and
The input of SVPWM generators 3 is connected, the signal output part of 3/2 converter 13 and the input phase of controling winding flux linkage calculation 12
Even, the motor side converter of two way convertor 2 is connected with the controling winding of brushless dual-feedback wind power generator 14, brushless double feed wind-force
The power winding of generator 14 is connected with grid-connected switch 18, and brushless dual-feedback wind power generator 14 is connected with gear-box 19, gear-box 19
It is connected with wind energy conversion system 20.
Realize that a kind of above-mentioned control method for cage-type rotor brushless dual-feedback wind power generator indirect power passes through following
Step is carried out：
Step 1: deriving the relation between active power and controling winding magnetic linkage, process is as follows：
In controling winding rest frame, active power expression formula such as formula（1）It is shown：
（1）
Formula（1）In be the conjugation of power winding current vector, be power winding voltages vector.
According to the flux linkage equations of brushless dual-feed motor controling winding rest frame, it can obtain：
（2）
Formula（2）InL hp =N r *M spr /2,L hc =N r *M scr /2, whereinN r For cage-type rotor nested cell number, M spr For power
The mutual inductance amplitude of each unit of winding Yu rotor windings, M scr For the mutual inductance width of each unit of controling winding Yu rotor windings
Value；L p 、 L c WithL r Respectively power winding self-induction, controling winding self-induction and rotor windings self-induction；Respectively controling winding,
The flux linkage vector of power winding and rotor windings；, be respectively rotor current, controling winding current phasor.
Will（2）The rotor voltage equation for substituting into brushless dual-feed motor controling winding rest frame is obtained：
（3）
Formula（3）In,p p For power winding number of pole-pairs,ω r For rotor velocity,R r For the phase resistance of rotor one.Due to (d/dt-jp p ω r ) all very big in dynamic and stable state, then：
（4）
The expression formula that current phasor is obtained after arrangement in controling winding rest frame is：
（5）
Formula（5）Middle flux linkage vectorExpression formula in controling winding rest frame is：
（6）
Will（5）、（6）Substitute into（1）：
（7）
Formula（7）In：θ up Withθ ψc Respectively power winding voltages and controling winding magnetic linkage phase angle.
Step 2: above-mentioned（7）Power winding voltages vector in formula, the parameter of electric machineL hp 、L hc 、L p 、L c 、L r Withθ up It is normal
Number, by the phase angle for controlling controling winding flux linkage vectorθ ψc （By controlling phase increment ΔXRealize）Controlled with amplitude
Work(powerP ；
Step 3: according to above-mentioned（7）In formulaAnd active powerPBetween relation, utilize the given of active power
ValueP * With calculated valuePBy the active output control winding magnetic linkage dynamic phasing increment of pi regulator 5；
Step 4: the system of the cage-type rotor brushless dual-feedback wind power generator indirect power control based on above-mentioned structure, real
Now the process of the control method is as follows：
1）Cage-type rotor brushless dual-feedback wind power generator is incorporated into the power networks by grid-connected switch 18.
2）Controling winding, the A phases of power winding voltages electric current and B phase components are observed under three-phase static coordinate systemu ac 、u bc 、u ap 、u bp 、i ac 、i bc 、i ap 、i bp , three-phase/two-phase coordinate transform is carried out by 3/2 converter 13 to above-mentioned physical quantity, obtained
The voltage and current respective under rest frame of controling winding and power winding,,i αc 、i βc 、i αp 、i βp。
3）Using,i αc 、i βc ,Withu-iModel by controling winding flux linkage calculation 12 calculate controling winding magnetic linkage component,
According to calculate controling winding magnetic linkage amplitude.Formula is such as（8）It is shown：
（8）
Wherein, it is respectively controling winding and the phase resistance of power winding one；, be magnetic linkage point under controling winding rest frame
Amount；It is the magnetic linkage amplitude under controling winding rest frame；, be magnetic linkage component under power winding rest frame.
4）Using,i αp 、i βp 15, which are calculated, by active power, reactive power calculates active power and reactive power.Formula
Such as（9）It is shown：
（9）
5）Controling winding magnetic linkage phase increment ΔXCalculate, counted first by controling winding magnetic linkage static phase incremental computations 7
Calculate static phase increment.Controling winding frequency is obtained by rotor speedf c, i.e.,
（10）
Wherein be rotor speed, be power around class frequency, be rotor windings number of pole-pairs, before "+" number represent metasynchronism shape
State, " " number represents supersynchronous state；Static phase increment DeltaX st By formula（11）Calculate
（11）
Wherein it is controling winding angular frequency.
Utilize brushless dual-feedback wind power generator active power set-pointP *And calculated valuePExport and control through active pi regulator 5
Winding magnetic linkage dynamic phasing increment Delta processedX d , then controling winding magnetic linkage phase increment such as formula（12）It is shown：
（12）
6）Utilize brushless dual-feedback wind power generator reactive power set-pointQ * And calculated valueQExported through idle pi regulator 16
Flux linkage set amplitude.
7）Using controling winding flux linkage set amplitude and calculated value magnetic linkage amplitude increment is exported through magnetic linkage pi regulator 10.
8）Controling winding magnetic linkage component and with controling winding magnetic linkage phase increment ΔXPass through controling winding magnetic linkage increment meter
The calculating controling winding magnetic linkage of calculation 8 increments, formula is such as（13）It is shown：
（13）
9）Using the increment of controling winding magnetic linkage component, by controling winding voltage, 11 are calculated, next cycle is calculatedT pwm Interior required voltage vector, formula is such as（14）It is shown：
（14）
10）The basis of SVPWM generators 3 and generation modulated signal, and controlled by the motor side converter of two way convertor 2
The controling winding of brushless dual-feedback wind power generator 14.
Using the simulation result of such scheme of the present invention as shown in Fig. 2~Figure 17.Model machine parameter：Power winding is 6 poles, control
Winding processed be 2 poles, power winding power 3KW, power winding is grid-connected to be followed by 380V/50Hz power frequency supplies, controling winding power
1.5KW, the phase resistance of power winding oneR p =3.2 Ω, the phase resistance of controling winding oneR c =5.32 Ω, the phase resistance of rotor oneR r =0.173m
Ω, inductance parameters：Power winding self-inductionL sp =292mH, power winding and rotor windings mutual inductanceL pr =2.16mH, controling winding is certainly
Sense L sc =642mH, controling winding and rotor windings mutual inductanceL cr =4mH, rotor windings self-induction L r =0.048mH, rotary inertiaJ=
0.064kg·m2.Fig. 2~Figure 17 be the inventive method cage-type rotor brushless dual-feedback wind power generator indirect power control system with
Wind energy conversion system as prime mover simulation waveform.In simulation model, the maximal wind-energy that wind energy conversion system is capturedP *It is used as cage-type rotor
Brushless dual-feedback wind power generator active power it is given, while the output speed of wind energy conversion system after gear-box speedup by being used as cage modle
The rotating speed input of rotor brushless double feed wind-driven generator.Fig. 2~Fig. 9 is the inventive method cage-type rotor brushless double feed wind-power electricity generation
Machine indirect power control system is in the case of fitful wind, and it is zero to keep power winding reactive power, and active power tracking wind speed is realized
Simulation result when maximal power tracing is controlled.Wherein Fig. 2 is wind speed, and Fig. 3 is motor speed, and Fig. 4 is power winding wattful power
Rate gives, and Fig. 5 is power winding active power feedback, and Fig. 6 is power winding reactive power, and Fig. 7 is controling winding magnetic linkage amplitude,
Fig. 8 is controling winding electric current, and Fig. 9 is power winding current.Figure 10 ~ Figure 17 is the inventive method cage-type rotor brushless double feed wind-force
Generator indirect power control system in the case of gradual change wind, power winding active power tracking wind speed realize peak power with
Track is controlled, and reactive power is mutated the simulation result to -500var from 0var.Wherein Figure 10 is wind speed, and Figure 11 is motor speed, figure
12 be that power winding active power gives, and Figure 13 is power winding active power feedback, and Figure 14 is power winding reactive power, figure
15 be controling winding magnetic linkage amplitude, and Figure 16 is controling winding electric current, and Figure 17 is power winding current.
From Fig. 2~Fig. 9, in the dynamic process that wind speed changes, system rotating speed changes with wind speed, brushless double feed wind-force
The active power set-point tracking wind speed of generator output realizes maximal power tracing control, and Feedback of Power value closelys follow set-point,
Power winding reactive power is remained near set-point 0, and controling winding magnetic linkage amplitude changes with reactive power, illustrates we
Method is in order to keep idle constant, and according to loading condition auto-adjustment control winding magnetic linkage, the frequency of controling winding electric current is with rotating speed
Change is to realize power winding variable speed constant frequency, and power winding current changes with active power.From Figure 10~Figure 17, in wind speed
In the dynamic process of change, system rotating speed changes with wind speed, and brushless dual-feed motor wind-power electricity generation acc power winding active power is given
Definite value tracks wind speed and realizes maximal power tracing all the time, and Feedback of Power value closelys follow set-point, and the frequency of controling winding electric current is with turning
Speed change, when adjusting reactive power, reactive power follows given value changes closely, and controling winding magnetic linkage amplitude also becomes with reactive power
Change and change, illustrate the change of this method auto-adjustment control winding magnetic tracking reactive power, controling winding electric current also changes therewith
Become.Above simulation result shows cage-type rotor brushless dual-feedback wind power generator indirect power control method proposed by the present invention quiet
Only coordinate system realizes the control that tracking wind speed realizes maximal power tracing and reactive power.System without rotating coordinate transformation and
Magnetic oriented, simple in construction, the parameter of electric machine used is only the resistance of two stator winding, thus system has to the parameter of electric machine
Stronger robustness.
Claims (1)
1. a kind of indirect power control method for cage-type rotor brushless dual-feedback wind power generator, including active power and idle
The control method of power, realizes that the control method first has to the relational expression set up between active power and controling winding magnetic linkage, such as
（7）It is shown：
（7）
Formula（7）In,PFor active power, L hp =N r *M spr /2,L hc =N r *M scr /2, whereinN r For cage-type rotor nested cell number,M spr For the mutual inductance amplitude of each unit of power winding Yu rotor windings,M scr For controling winding and each unit of rotor windings
Mutual inductance amplitude；L p 、 L c WithL r Respectively power winding self-induction, controling winding self-induction and rotor windings self-induction；For control
Winding magnetic linkage；For power winding voltages；θ up Withθ ψc The respectively phase angle of power winding voltages and controling winding magnetic linkage；Institute
State（7）In formula, power winding voltages, the parameter of electric machineL hp 、L hc 、L p 、L c WithL r It is constant, by formula（7）In obtain by control
The phase angle of controling winding magnetic linkageWith controling winding magnetic linkage amplitudeTo control active powerP；
Next to that building cage-type rotor brushless dual-feedback wind power generator indirect power control system, active power and idle work(are realized
The closed-loop control of rate；
（1）According to formula（7）In controling winding magnetic linkageAnd active powerPBetween relation, utilize active power set-pointP * With calculated valuePBy active pi regulator（5）Output control winding magnetic linkage dynamic phasing increment, by itself and static phase
Increment DeltaX st,Addition obtains controling winding magnetic linkage phase increment ΔX；Reactive power set-pointQ* with calculated valueQBy idle PI
Adjuster（16）Output control winding flux linkage set amplitude；Again by controling winding flux linkage set amplitudeAnd controling winding
Magnetic linkage amplitudeThrough magnetic linkage pi regulator（10）Output control winding magnetic linkage amplitude incrementk s ；
（2）Based on above-mentioned steps（1）Cage-type rotor brushless dual-feedback wind power generator indirect power control system is built, the control is realized
The process of method processed is as follows：
1）Cage-type rotor brushless dual-feedback wind power generator passes through grid-connected switch（18）It is incorporated into the power networks；
2）Observe controling winding and power winding voltages, the A phases of electric current and B phase components respectively under three-phase static coordinate systemu ac 、u bc 、u ap 、u bp 、i ac 、i bc 、i ap Withi bp , 3/2 converter is passed through to above-mentioned physical quantity（13）Carry out coordinate transform, obtain controlling around
The voltage and current component of group and power windingu αc 、u βc 、u αp 、u βp 、i αc 、i βc 、i αp Withi βp ；
3）Utilizeu αc 、u βc 、i αc Withi βc Pass through controling winding flux linkage calculation（12）Calculate controling winding magnetic linkage componentψ αc Withψ βc , root
According toψ αc Withψ βc Calculate controling winding magnetic linkage amplitude；
4）Calculated by active power, reactive power（15）Calculate active power and reactive power；
5）Pass through controling winding magnetic linkage static phase incremental computations（7）Obtain controling winding static phase increment DeltaX st , by having
Work(power P I regulator（5）Obtain controling winding magnetic linkage dynamic phasing increment DeltaX d , sum of the two is next sampling period T pwm
Interior controling winding magnetic linkage phase increment ΔX；
6）Utilize the set-point of reactive powerQ * With calculated valueQBy idle pi regulator（16）Output control winding flux linkage set
Amplitude, and controling winding magnetic linkage amplitudeThrough magnetic linkage pi regulator（10）Output control winding magnetic linkage amplitude incrementk s ；Profit
With controling winding magnetic linkage componentψ αc Withψ βc , controling winding magnetic linkage amplitude incrementk s And controling winding magnetic linkage phase increment ΔXIt is logical
Cross controling winding magnetic linkage increment Deltaψ s Calculate（8）Obtain controling winding magnetic linkage increment component Δψ αc And Δψ βc ；
7）Utilize controling winding magnetic linkage increment component Δψ αc And Δψ βc , pass through controling windingαShaft voltage and controling windingβShaft voltageu αc 、u βc Calculate（11）, obtain next cycleT pwm Interior required controling windingαShaft voltageu αc And controling windingβShaft voltageu βc ；
8）SVPWM generators（3）According tou αc Withu βc Modulated signal is generated, and passes through two way convertor（2）Motor side converter
Control brushless double feed wind-force electrical machinery（14）Controling winding.
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| CN106849163A (en) * | 2017-02-15 | 2017-06-13 | 太原理工大学 | Brushless dual-feedback wind power generator symmetrical voltage failure magnetic linkage tracks low-voltage ride-through method |
| US10707789B2 (en) | 2017-05-12 | 2020-07-07 | General Electric Company | Adaptive current damping module for improved power converter control in wind turbine systems |
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| US10903773B1 (en) | 2019-07-15 | 2021-01-26 | Industrial Technology Research Institute | Kinetic energy recovery system with flywheel |
| CN110957761B (en) * | 2019-12-09 | 2022-07-19 | 太原理工大学 | Brushless doubly-fed wind generator symmetrical high-voltage sudden-rise fault ride-through method based on improved flux linkage tracking control method |
| CN113517717B (en) * | 2021-06-23 | 2022-01-25 | 天津滨电电力工程有限公司 | Control method for grid-connected operation of open-winding double-fed wind driven generator of micro-grid |
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