CN109193773A - A kind of double feedback electric engine prediction power control method and device - Google Patents
A kind of double feedback electric engine prediction power control method and device Download PDFInfo
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Classifications
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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
- 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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- 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
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
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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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The invention discloses a kind of double feedback electric engine prediction power control method and devices, comprising: generates traditional active power differential expressions and extension reactive power differential expressions using the expression formula of traditional active power and the expression formula combination double feedback electric engine mathematical model of extension reactive power；Using single order Euler's discrete method, the differential expressions discretization that will be obtained calculates subsequent time performance number by current time performance number；The method controlled using dead beat prediction power calculates target rotor voltage vector reference value according to the obtained subsequent time performance number；Using space vector pulse width modulation SVPWM, three voltage vectors and its action time required for the target rotor voltage vector reference value are obtained, finally obtains the driving signal of driving inverter switching device pipe.
Description
Technical field
The present invention relates to double feedback electric engine wind power generation field, particularly relate to a kind of double feedback electric engine prediction power control method and
Device.
Background technique
Traditional double feedback electric engine control is typically established on the basis of ideal power grid, when imbalance fault occurs, power grid meeting
Negative sequence component is generated, leads to occur negative sequence component in stator voltage, stator current and rotor current, electromagnetic torque occurs larger
Pulsation, convey and shaken to the power of power grid.Therefore need to study the high performance control of double feedback electric engine under unbalanced power grid
Strategy come realize negative-sequence current in Stator and Rotor Windings elimination or inhibit active power and reactive power two double-frequency fluctuations.
Currently, it is related to the double feedback electric engine control strategy under unbalanced power grid there are many document, such as " IEEE
Transactions on Power Electronics " the 2nd phase of volume 25 in 2010 document " Direct Power
Control of Doubly-Fed-Induction-Generator-Based Wind Turbines Under
Unbalanced Grid voltage " propose direct Power Control (DPC) method of double feedback electric engine under unbalanced power grid a kind of,
By the power compensating value being derived under various control targets, it is directly overlapped with original value and power reference, is realized
It eliminates torque pulsation and maintains the control target of stator current sine, but the steady-state performance of this method is limited to switch and swears
Scale and hysteresis comparator, power swing and current distortion are all very big.
Most methods are to be solved the problems, such as based on conventional power theory, but conventional power is used to define in existing literature
Control method increase the complexity of system when controlling target realizing, be unfavorable for implementing and apply."IEEE
Transactions on Power Delivery " the 3rd phase of volume 21 in 2006 document " Modeling and Analysis
of Instantaneous Active and Reactive Power for PWM AC/DC Converter Under
Generalized Unbalanced Network " in propose the instantaneous reactive power theory of extension, this idle function of extension
Rate is embodied as the dot product of electric current Yu voltage delay signal, is more applicable for unbalanced power grid compared to traditional reactive power definition
Under power control.But still lack the application that this new power is defined in double feedback electric engine PREDICTIVE CONTROL field at present, with letter
Change control strategy of the double feedback electric engine under unbalanced power grid, to promote its steady-state performance.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of double feedback electric engine prediction power control of simplified control system structure
Method and apparatus processed promote the steady-state performance of control.
Based on above-mentioned purpose, double feedback electric engine prediction power control method provided by the invention, comprising:
The expression formula of expression formula and extension reactive power to traditional active power is generated using double feedback electric engine mathematical model
Traditional active power differential expressions and extension reactive power differential expressions；
Utilize single order Euler's discrete method, the differential expressions discretization that will be obtained, by current time performance number meter
Calculate subsequent time performance number；
The method controlled using dead beat prediction power calculates target rotor according to the obtained subsequent time performance number
Voltage vector reference value；
Using space vector pulse width modulation SVPWM, obtain required for the target rotor voltage vector reference value
Three voltage vectors and its action time finally obtain the driving signal of driving inverter switching device pipe.
Further, the expression formula of the expression formula to traditional active power and extension reactive power utilizes double feedback electric engine
Mathematical model generates traditional active power differential expressions and extension reactive power differential expressions, and step includes:
If stator voltage is us, stator current is；
If traditional active power is expressed as Ps, extend reactive power and be expressed as
According to double feedback electric engine mathematical model, defining traditional active power expression formula isExtend nothing
Function power expression isWherein u 'sFor the stator voltage after delay 1/4T, " * " indicates the variable
Conjugate；
In conjunction with double feedback electric engine equation, generating traditional active power differential expressions isIt is micro- with extension reactive power
Point expression formula isIts
In,Lm, Ls, LrRespectively mutual inductance, stator self inductance and rotor self-induction, Rs, RrFor stator resistance and rotor
Resistance, urFor rotor-side voltage, irFor rotor current, ωs,ωr,ωsl, it is double feedback electric engine synchronous speed, the revolving speed at current time
With slip speed, ψsFor stator magnetic linkage value, r, s, m respectively indicate rotor-side variable, stator side variable and mutual inductance variable.
Further, described to utilize single order Euler discrete method, the differential expressions discretization that obtained, by current
Moment performance number calculates subsequent time performance number step
The traditional active power differential expressions and extension reactive power that will be obtained using single order Euler discrete method
Differential expressions discretization obtains the expression formula of discrete methodWithWherein
Subscript " k " is value of the variable at current time, and subscript " k+1 " is value of the variable in subsequent time, TsThe period is controlled for system；
Pass through formula:
It is counted using obtained traditional active power differential expressions, extension reactive power differential expressions and k moment
Obtained performance number calculates the performance number at k+1 moment.
Further, the method controlled using dead beat prediction power, according to the obtained subsequent time power
Value calculates target rotor voltage vector reference value step
If traditional active power reference value is expressed asExtension reactive power reference qref is expressed asTarget
Rotor voltage vector reference value is expressed as
Pass through formula:The performance number of subsequent time is defined as value and power reference；
Pass through formula using the method for power dead beat PREDICTIVE CONTROL according to the obtained discrete method expression formula:Calculate rotor-side
Reference voltage vector, whereinSubscript " dq " indicates the dq in rotor coordinate
Axis, subscript " sd " indicate that value of the stator side variable on rotor coordinate d axis, subscript " sq " indicate that stator side variable is sat in rotor
Value on mark system q axis, subscript " rd " indicate that value of the rotor-side variable on rotor coordinate d axis, subscript " rq " indicate rotor-side
Value of the variable on rotor coordinate q axis；
Pass through formula:Calculate target rotor voltage vector reference value.
Further, the target rotor voltage vector synthesized using space vector pulse width modulation SVPWM
Reference valueThree voltage vector v0,v1,v2And its action time t0,t1,t2, finally obtain driving inverter switching device pipe
Driving signal.
On the other hand, the present invention also provides a kind of double feedback electric engine prediction power control devices, comprising:
Bidirectional, dc source, double feedback electric engine, recoverable grid simulator, voltage and current sample circuit, dsp controller and drive
Dynamic circuit；
Wherein, voltage and current sample circuit acquires direct current mother using voltage hall sensor and current Hall sensor respectively
Line voltage, double feedback electric engine stator side two-phase voltage, double feedback electric engine stator side biphase current and rotor-side biphase current, sampled signal
Enter dsp controller after signal conditioning circuit and is converted to digital signal；
Dsp controller completes the double feedback electric engine flexible power control method, exports six way switch pulses, then passes through
The driving signal of six switching tubes of inverter is obtained after driving circuit.
From the above it can be seen that double feedback electric engine prediction power control method provided by the invention and device, by adopting
With the control method of extension reactive power definition, elimination active power and expansion can be realized without calculating additional power compensating value
Two double-frequency fluctuation of reactive power is opened up, and realizes that stator current sine does not distort, Control system architecture is simplified, is obviously improved control
Steady-state performance；In the case where balancing power grid, the extension reactive power that the present invention uses is identical with traditional active power effect, the present invention
The double feedback electric engine prediction power control method of proposition is completely suitable for the control under balance power grid；By using space vector pulse width
Modulation technique further promotes the steady-state performance of control.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is double feedback electric engine prediction power control method embodiment flow chart provided by the invention；
Fig. 2 is the functional block diagram based on double feedback electric engine prediction power control method provided by the invention；
Fig. 3 is double feedback electric engine prediction power control device hardware structural diagram provided by the invention；
Fig. 4 is that the double feedback electric engine prediction power based on extension reactive power under unbalanced power grid controls the steady of one embodiment
State simulation waveform；
Fig. 5 is that the double feedback electric engine prediction power based on extension reactive power under unbalanced power grid controls the steady of one embodiment
State experimental waveform；
Fig. 6 is the THD of one phase current of stator in Steady Experimental waveform shown in Fig. 5.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
As shown in Figure 1, being double feedback electric engine prediction power control method embodiment flow chart provided by the invention, comprising:
Step 101, double feedback electric engine mathematics is utilized to the expression formula of the expression formula of traditional active power and extension reactive power
Model generates traditional active power differential expressions and extension reactive power differential expressions, and step includes:
If stator voltage is us, stator current is；
If traditional active power is expressed as Ps, extend reactive power and be expressed as
According to double feedback electric engine mathematical model, defining traditional active power expression formula isExtend nothing
Function power expression isWherein " * " indicates the conjugate of the variable, u 'sFor determining after delay 1/4T
Sub- voltage；
Traditional active power differential expressions are generated in conjunction with double feedback electric engine equation based on above formula are as follows:
It is raw
At extension reactive power differential expressions are as follows:
Wherein,Lm, Ls, LrFor mutual inductance, stator self inductance and rotor self-induction, Rs, RrFor stator resistance
And rotor resistance, urFor rotor-side voltage, irFor rotor current, ωs,ωr,ωsl, it is that the double feedback electric engine at current time is synchronous
Speed, revolving speed and slip speed, ψsFor stator magnetic linkage value, r, s, m respectively indicate rotor-side variable, stator side variable and mutual inductance variable.
Step 102, the method discrete using single order Euler, the differential expressions discretization that step 101 is obtained, by current
K moment performance number calculates subsequent time K+1 moment performance number, and step includes:
By obtained traditional active power differential expressions and reactive power differential is extended using single order Euler discrete method
Expression formula discretization obtains the expression formula of discrete method are as follows:
With
Wherein subscript " k " is value of the variable at current time, and subscript " k+1 " is value of the variable in subsequent time, TsTo be
The system control period；
The performance number being calculated using obtained differential expressions and k moment calculates the power value expression at k+1 moment
Are as follows:
Step 103, the method controlled using dead beat prediction power, the subsequent time performance number obtained according to step 102
Calculating target rotor voltage vector reference value step includes:
If traditional active power reference value is expressed asExtension reactive power reference qref is expressed asTarget
Rotor voltage vector reference value is expressed as
Using power expression of the obtained single order Euler after discrete, using the method for power dead beat PREDICTIVE CONTROL, by K
The performance number at+1 moment is directly defined as value and power reference, show that rotor-side reference voltage vector, formula are respectively as follows:
Wherein,Subscript " dq " indicates the dq axis in rotor coordinate, subscript
" sd " indicates that value of the stator side variable on rotor coordinate d axis, subscript " sq " indicate stator side variable in rotor coordinate q axis
On value, subscript " rd " indicates that value of the rotor-side variable on rotor coordinate d axis, subscript " rq " indicate that rotor-side variable is turning
Value on subcoordinate system q axis；
Pass through formula:Calculate target rotor voltage vector reference value.
Step 104, the target rotor voltage vector reference value obtained according to step 103Using space vector pulse width tune
Technology (SVPWM) processed obtains synthesis target rotor voltage vector reference valueRequired three voltage vector v0,v1,v2With
And their action time t0,t1,t2；
Three voltage vectors and its action time according to obtained in step 104 obtain the drive of driving inverter switching device pipe
Dynamic signal.
Double feedback electric engine prediction power control method provided by the invention and device, by using extension reactive power definition
Elimination active power and extension two frequency multiplication wave of reactive power can be realized without calculating additional power compensating value in control method
It is dynamic, and realize that stator current sine does not distort, Control system architecture is simplified, the steady-state performance of control is obviously improved.
In the case where balancing power grid, the extension reactive power that the present invention uses is identical with traditional active power effect, and the present invention mentions
Double feedback electric engine prediction power control method out is completely suitable for the control under balance power grid；By using space vector pulse width tune
Technology processed further promotes the steady-state performance of control.
As shown in Fig. 2, being the functional block diagram based on double feedback electric engine prediction power control method provided by the invention, including double
Generating aid 201, delay unit 202, power calculation unit 203, voltage computation unit 204, space vector modulation module 205.
Wherein, delay unit is responsible for stator voltage postponing for 1/4 period, and power calculation unit carries out in above-mentioned steps 102
Performance number calculates, and voltage computation unit carries out target rotor voltage vector reference value in above-mentioned steps 103 and calculates.
On the other hand, double feedback electric engine prediction power control device provided by the invention, as shown in Figure 3, comprising:
Recoverable grid simulator 301, bidirectional, dc source 303, double feedback electric engine 201, voltage and current sample circuit 304,
Dsp controller 305 and driving circuit 306；
Wherein, voltage and current sample circuit acquires direct current mother using voltage hall sensor and current Hall sensor respectively
Line voltage, double feedback electric engine stator side two-phase voltage, double feedback electric engine stator side biphase current and rotor-side biphase current, sampling letter
Enter dsp controller number after signal conditioning circuit and is converted to digital signal；
Dsp controller exports six way switch pulses, so for completing the control method that above-mentioned steps 101~104 are proposed
By the driving signal for six switching tubes for obtaining inverter after overdrive circuit.
The validity of double feedback electric engine prediction power control method provided by the present invention is by analyzing emulation wave shown in Fig. 4
Electric current THD result in shape, experimental waveform shown in fig. 5 and experimental waveform shown in fig. 6 obtains.Wherein, emulation shown in Fig. 4
Waveform is that the double feedback electric engine prediction power based on space vector modulating method controls (DPC-SVM) and using extension instantaneous power reason
Static Simulation waveform of improvement (DPC-SVM) method of opinion under the conditions of unbalanced power grid, the sampling frequency of two methods in emulation
Rate is all 10kHz.Simulation waveform is followed successively by stator side active power, stator side reactive power, stator current, rotor from top to bottom
Electric current and network voltage.Control target in Fig. 4 (a) is to eliminate two frequency multiplication waves of traditional active power and traditional reactive power
It is dynamic, two kinds of reactive powers wherein are indicated simultaneously in the reactive power channel of Fig. 4 (a), wherein traditional reactive power eliminates
Two double-frequency fluctuations, and under the control target, novel reactive power still has two frequency multiplication waveforms.Control target in Fig. 4 (b) is to disappear
It is novel idle in the reactive power channel in Fig. 4 (b) except two double-frequency fluctuations of traditional active power and novel reactive power
The two frequencys multiplication pulsation of power is eliminated, and there are two double-frequency fluctuations for traditional reactive power.As shown in Fig. 4 (a) and Fig. 4 (b), in power grid
When balance, the reactive power under two kinds of Power Theories is all kept constant, when network voltage occurs when asymmetry is fallen based on novel
The DPC-SVM of reactive power can guarantee the idle function of sinusoidal but asymmetric stator current, constant active power and extension
Rate.Although traditional active power and traditional reactive power are also able to maintain constant in traditional DPC-SVM, stator current can be sent out
Raw Severe distortion, can pollute power grid.
It is illustrated in figure 5 traditional DPC-SVM and uses the improvement DPC-SVM method of extension instantaneous power theory in imbalance
Steady Experimental waveform under grid conditions.Waveform is followed successively by traditional active power, traditional reactive power, novel idle from top to bottom
Power, stator current waveforms and rotor current waveform.It is similar with analogous diagram, traditional wattful power in the reactive power channel of Fig. 5 (a)
Two double-frequency fluctuations of rate are eliminated, and two double-frequency fluctuation of novel active power in Fig. 5 (b) is eliminated and stator current is sinusoidal.It is real
The sample frequency for testing middle control algolithm is 10kHz.In 0-0.1s, network voltage keeps balance, and 0.1s moment, A phase voltage is fallen
To the 70% of primary voltage amplitude.By analyzing and comparing, experimental result can be corresponded with simulation result, idle using extending
Power can obtain sinusoidal but asymmetric stator current, constant active power and extension reactive power.
It is illustrated in figure 6 two kinds of DPC-SVM current harmonics analyses based on different capacity theory, Fig. 6 under unbalanced power grid
It (a) is a phase stator current frequency spectrum of tradition DPC-SVM method, Fig. 6 (b) is the improvement DPC- based on extension reactive power definition
One phase stator current frequency spectrum of SVM method.It can be seen that and more serious distortion is had occurred using the stator current of DPC-SVM, electricity
Stream THD is higher, and especially 3 subharmonic result in the A phase stator current for being similar to triangular wave in Fig. 6 (a).It is idle to introduce extension
After power definition, Stator Current Harmonic is inhibited, and whole THD is substantially reduced, and the threephase stator electric current in Fig. 6 (b) can
It is enough to keep sinusoidal.
By the analysis to the above simulation waveform, experimental waveform and experimental result, using the side of extension instantaneous power theory
Method can realize the sinusoidal and power constant of stator current in the case where not being superimposed any power compensating value, be more suitable for
Double feedback electric engine high performance control under unbalanced power grid.
It can be seen that double feedback electric engine prediction power control method provided by the invention and device, idle by using extending
Elimination active power and extension reactive power can be realized without calculating additional power compensating value in the control method of power definition
Two double-frequency fluctuations, and realize that stator current sine does not distort, Control system architecture is simplified, the stability of control is obviously improved
Energy；In the case where balancing power grid, the extension reactive power that the present invention uses is identical with traditional active power effect, proposed by the present invention double
Generating aid prediction power control method is completely suitable for the control under balance power grid；By using space vector pulse width modulation skill
Art further promotes the steady-state performance of control.
The device of above-described embodiment for realizing method corresponding in previous embodiment there is corresponding method to implement
The beneficial effect of example, details are not described herein.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as
Many other variations of the upper different aspect of the invention, for simplicity, they are not provided in details.
In addition, to simplify explanation and discussing, and in order not to obscure the invention, it can in provided attached drawing
It is connect with showing or can not show with the well known power ground of integrated circuit (IC) chip and other components.Furthermore, it is possible to
Device is shown in block diagram form, to avoid obscuring the invention, and this has also contemplated following facts, i.e., about this
The details of the embodiment of a little block diagram arrangements be height depend on will implementing platform of the invention (that is, these details should
It is completely within the scope of the understanding of those skilled in the art).Elaborating that detail (for example, circuit) is of the invention to describe
In the case where exemplary embodiment, it will be apparent to those skilled in the art that can be in these no details
In the case where or implement the present invention in the case that these details change.Therefore, these descriptions should be considered as explanation
Property rather than it is restrictive.
Although having been incorporated with specific embodiments of the present invention, invention has been described, according to retouching for front
It states, many replacements of these embodiments, modifications and variations will be apparent for those of ordinary skills.Example
Such as, discussed embodiment can be used in other memory architectures (for example, dynamic ram (DRAM)).
The embodiment of the present invention be intended to cover fall into all such replacements within the broad range of appended claims,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of double feedback electric engine prediction power control method, characterized by comprising:
It generates and passes using the expression formula of traditional active power and the expression formula combination double feedback electric engine mathematical model of extension reactive power
Active power differential expressions of uniting and extension reactive power differential expressions；
Using single order Euler's discrete method, the differential expressions discretization that will be obtained, under being calculated by current time performance number
One moment performance number；
The method controlled using dead beat prediction power calculates target rotor voltage according to the obtained subsequent time performance number
Vector reference value；
Using space vector pulse width modulation SVPWM, three are obtained required for the target rotor voltage vector reference value
Voltage vector and its action time finally obtain the driving signal of driving inverter switching device pipe.
2. a kind of double feedback electric engine prediction power control method according to claim 1, which is characterized in that described to have to tradition
The expression formula of function power and the expression formula of extension reactive power generate traditional active power differential using double feedback electric engine mathematical model
Expression formula and extension reactive power differential expressions, step include:
If stator voltage is us, stator current is；
If traditional active power is expressed as Ps, extend reactive power and be expressed as
According to double feedback electric engine mathematical model, defining traditional active power expression formula isExtend reactive power
Expression formula isWherein u 'sFor the stator voltage after delay 1/4T, " * " indicates the conjugation of the variable
Value；
In conjunction with double feedback electric engine equation, generating traditional active power differential expressions isWith the extension
Reactive power differential expressions areWherein,Lm, Ls, LrRespectively mutual inductance, stator self inductance and rotor self-induction, Rs, RrFor stator resistance and rotor electricity
Resistance, urFor rotor-side voltage, irFor rotor current；ωs,ωr,ωsl, respectively the double feedback electric engine synchronous speed at current time, turn
Speed and slip speed, ψsFor stator magnetic linkage value, r, s, m respectively indicate rotor-side variable, stator side variable and mutual inductance variable.
3. a kind of double feedback electric engine prediction power control method according to claim 2, it is characterised in that described to utilize single order
Euler's discrete method, the differential expressions discretization that will be obtained calculate subsequent time performance number by current time performance number
Step includes:
The traditional active power differential expressions and extension reactive power differential that will be obtained using single order Euler discrete method
Expression formula discretization obtains the expression formula of discrete methodWithWherein subscript
" k " is value of the variable at current time, and subscript " k+1 " is value of the variable in subsequent time, TsThe period is controlled for system；
Pass through formula:
It is calculated using obtained traditional active power differential expressions, extension reactive power differential expressions and k moment
The performance number arrived calculates the performance number at k+1 moment.
4. a kind of double feedback electric engine prediction power control method according to claim 3, which is characterized in that described to utilize indifference
The method for clapping prediction power control calculates target rotor voltage vector reference value step according to the obtained subsequent time performance number
Suddenly include:
If traditional active power reference value is expressed asExtension reactive power reference qref is expressed asTarget rotor
Voltage vector reference value is expressed as
Pass through formula:The performance number of subsequent time is defined as value and power reference；
Pass through formula using the method for power dead beat PREDICTIVE CONTROL according to the obtained discrete method expression formula:Calculate rotor
Side reference voltage vector, whereinSubscript " dq " indicates the dq in rotor coordinate
Axis；
Pass through formula:Calculate target rotor voltage vector reference value.
5. a kind of double feedback electric engine prediction power control method according to claim 4, which is characterized in that described to utilize space
The target rotor voltage vector reference value that Vector Pulse Width Modulation technology SVPWM is synthesizedThree voltage vector v0,
v1,v2And its action time t0,t1,t2, finally obtain the driving signal of driving inverter switching device pipe.
6. a kind of double feedback electric engine prediction power control device characterized by comprising
Bidirectional, dc source, double feedback electric engine, recoverable grid simulator, voltage and current sample circuit, dsp controller and driving electricity
Road；
Wherein, voltage and current sample circuit acquires DC bus electricity using voltage hall sensor and current Hall sensor respectively
Pressure, double feedback electric engine stator side two-phase voltage, double feedback electric engine stator side biphase current and rotor-side biphase current, sampled signal are passed through
Enter dsp controller after signal conditioning circuit and is converted to digital signal；
Dsp controller completes double feedback electric engine flexible power control method described in Claims 1 to 5 any one, exports six tunnels
Then switching pulse obtains the driving signal of six switching tubes of inverter after overdrive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149720.9A CN109193773B (en) | 2018-09-29 | 2018-09-29 | Method and device for controlling predicted power of double feeders |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149720.9A CN109193773B (en) | 2018-09-29 | 2018-09-29 | Method and device for controlling predicted power of double feeders |
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| Publication Number | Publication Date |
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| CN109193773A true CN109193773A (en) | 2019-01-11 |
| CN109193773B CN109193773B (en) | 2020-06-30 |
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| CN115079575A (en) * | 2022-07-19 | 2022-09-20 | 北京理工大学 | Permanent magnet synchronous motor simulator based on finite control set model predictive control |
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| CN115079575A (en) * | 2022-07-19 | 2022-09-20 | 北京理工大学 | Permanent magnet synchronous motor simulator based on finite control set model predictive control |
| CN115079575B (en) * | 2022-07-19 | 2023-03-03 | 北京理工大学 | Permanent magnet synchronous motor simulator based on finite control set model predictive control |
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