CN106169879A - Revise VIENNA rectifier modulator approach, controller and the system injecting zero-sequence component - Google Patents
Revise VIENNA rectifier modulator approach, controller and the system injecting zero-sequence component Download PDFInfo
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- CN106169879A CN106169879A CN201610831458.0A CN201610831458A CN106169879A CN 106169879 A CN106169879 A CN 106169879A CN 201610831458 A CN201610831458 A CN 201610831458A CN 106169879 A CN106169879 A CN 106169879A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
Abstract
The invention discloses a kind of VIENNA rectifier modulator approach, controller and system revised and inject zero-sequence component.Wherein, modulator approach includes according to input current corrected reference voltage instantaneous polarity；Calculate the zero-sequence component of reference voltage after revising；Inject zero-sequence component and calculate the dutycycle that reference voltage is corresponding；Generate PWM based on dual carrier and drive VIENNA rectifier.The present invention is easy, efficient, be prone to the realization that quantizes, and makes VIENNA rectifier have high-quality input and output, and efficient stable runs, and is greatly enlarged VIENNA rectifier application scenario.
Description
Technical field
The invention belongs to field of power electronics, particularly relate to a kind of VIENNA rectifier modulation revised and inject zero-sequence component
Method, controller and system.
Background technology
Three-phase tri-level three switching rectifier, i.e. VIENNA rectifier, can realize inputting unity power factor correction, have
The advantages such as switching loss is low and electromagnetic interference is little, and circuit structure is simple, have less number of switches, without problems such as bridge arm direct pass, satisfy
Become study hotspot.
The space vector of voltage of VIENNA rectifier is together decided on current polarity by off state.But, due to circuit
The effect of the inductive loads such as middle inductance, makes input power network current lagging voltage, and input current is different from the polarity of reference voltage, depends on
So use former reference voltage by producing the space vector of voltage of mistake, cause Harmonics of Input to increase, limit VIENNA whole
The popularization and application of stream method.Therefore, it is achieved the efficient operation of VIENNA rectifier has important practical significance.
Summary of the invention
In order to solve the shortcoming of prior art, the present invention provides a kind of VIENNA rectifier tune revised and inject zero-sequence component
Method processed, controller and system.The present invention can solve the problem that due to input current lagging voltage and electric current with reference voltage polarity not
Problem is increased with the harmonic wave caused.And the VIENNA rectifier modulator approach revising injection zero-sequence component of the present invention is easy,
Efficiently, it is prone to the realization that quantizes, makes VIENNA rectifier have high-quality input and output, and efficient stable runs, and greatly opens up
Open up VIENNA rectifier application scenario.
For achieving the above object, the present invention is by the following technical solutions:
The invention provides a kind of VIENNA rectifier modulator approach revised and inject zero-sequence component, including:
Step 1: revise the instantaneous polarity of three-phase reference voltage according to the instantaneous polarity of three-phase input current；
Step 2: according to the space vector reference voltage that three-phase reference voltage is corresponding, calculates three-phase reference voltage after revising
Zero-sequence component；
Step 3: inject described zero-sequence component, and then calculate the dual carrier SVM equivalence duty that three-phase reference voltage is corresponding
Ratio；
Step 4: based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives VIENNA rectifier.
SVM equivalent gain isThe space vector reference electricity that three-phase reference voltage is corresponding after being multiplied by SVM equivalent gain
The span of pressure is [-1.15～1.15].
Instantaneous polarity according to three-phase input current revises the process of the instantaneous polarity of three-phase reference voltage:
Calculate space vector reference voltage corresponding after three-phase reference voltage is multiplied by SVM equivalent gain；Each at space vector
In individual sector, if the instantaneous polarity of a phase input current is just, then the space vector that in respective sectors, this phase reference voltage is corresponding
Reference voltage keeps constant；Otherwise, space vector reference voltage superposition one correction value that this phase reference voltage is corresponding, wherein, repair
On the occasion of the maximum equal to three-phase reference voltage.
The process of the zero-sequence component of three-phase reference voltage after revising that calculates is:
Space vector reference voltage corresponding for three-phase reference voltage after amendment is sorted by size, obtains space vector reference
Voltage max V 'max, space vector reference voltage intermediate value V 'midWith space vector reference voltage minimum V 'min；
The zero-sequence component V ' of three-phase reference voltage after correctioncom=(1-V 'max+V′min)·K-V′min, wherein, K value is used for
Adjust the neutral balance of VIENNA rectifier, for constant coefficient.
During VIENNA rectifier equivalent space Vector Modulation SVM, K value is 1/2.
Present invention also offers the controller of a kind of VIENNA rectifier revised and inject zero-sequence component, including:
The instantaneous polarity modified module of three-phase reference voltage, it is for revising according to the instantaneous polarity of three-phase input current
The instantaneous polarity of three-phase reference voltage；
Zero-sequence component computing module, it is for the space vector reference voltage corresponding according to three-phase reference voltage, and calculating is repaiied
The zero-sequence component of three-phase reference voltage after just；
Equivalence dutycycle computing module, it is used for injecting described zero-sequence component, and then is calculated three-phase reference voltage pair
The dual carrier SVM equivalence dutycycle answered；
Modulated signal generation module, it, for based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives
VIENNA rectifier.
The instantaneous polarity modified module of described three-phase reference voltage, is additionally operable to calculate three-phase reference voltage and is multiplied by SVM equivalence
Space vector reference voltage corresponding after gain；In each sector of space vector, if the instantaneous polarity of a phase input current is
Just, then the space vector reference voltage that this phase reference voltage is corresponding in respective sectors keeps constant；Otherwise, this phase reference voltage pair
Space vector reference voltage superposition one correction value answered, wherein, correction value is equal to the maximum of three-phase reference voltage.
SVM equivalent gain isThe space vector reference electricity that three-phase reference voltage is corresponding after being multiplied by SVM equivalent gain
The span of pressure is [-1.15～1.15].
Zero-sequence component computing module includes:
Space vector reference voltage order module, it is for by space vector reference corresponding for three-phase reference voltage after amendment
Voltage sorts by size, and obtains space vector reference voltage maximum V 'max, space vector reference voltage intermediate value V 'midAnd sky
Between vector reference voltage minimum V 'min；
Zero-sequence component acquisition module, it is for according to V 'com=(1-V 'max+V′min)·K-V′min, three-phase after being revised
The zero-sequence component of reference voltage, wherein, K value is for adjusting the neutral balance of VIENNA rectifier, for constant coefficient.
VIENNA rectifier is when equivalent space Vector Modulation SVM, and K value is 1/2.
Controller based on the described VIENNA rectifier revised and inject zero-sequence component, present invention also offers one
VIENNA rectifier control system, including described controller；Described controller is used for receiving three-phase input current and three coherents
Examining voltage, output PWM modulation signal drives VIENNA rectifier.
The invention have the benefit that
(1), in reference voltage delayed power network current θ angle, the method, by revising zero-sequence component, solves the pole of electric current
The property Current harmonic distortion problems that cause different from reference voltage polarity, improve the quality of power supply；
(2) the method can reduce wave filter on AC side design capacity, saves three level VIENNA rectifier volumes, cost；
(3) the method equivalent space Vector Modulation (SVM), simplifies VIENNA modulator approach, reduces amount of calculation, it is easy to
Digital Realization.
Accompanying drawing explanation
Fig. 1 is three level VIENNA rectifier topological diagrams；
Fig. 2 by the novel VIENNA rectifier of proposition correction zero-sequence component inject modulation principle figure；
Fig. 3 is VIENNA rectifier vectogram；
Before Fig. 4 (a) is for adding zero-sequence component, a in the I of sector, b, c three-phase reference voltage amplitude and corresponding switch shape
State；
Fig. 4 (b) is a in the I of sector, b, c three-phase instantaneous polarity revised reference voltage amplitude and corresponding switch shape
State；
After Fig. 4 (c) is for adding zero-sequence component correction, a in the I of sector, b, c three-phase reference voltage amplitude and corresponding switch
State；
Fig. 5 is equivalent space vector three-phase reference voltage oscillogram；
Fig. 6 is for revising space vector three-phase reference voltage oscillogram after adding algorithm；
Fig. 7 is to add zero-sequence component and the three equivalent dutycycle simulation waveform figures that algorithm produces；
When Fig. 8 is not for adding algorithm, simulation result is surveyed in exchange；
Fig. 9 is that simulation result is surveyed in the exchange of the present invention.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings:
Commutator control strategy is illustrated with three level VIENNA rectifier structures as shown in Figure 1.
Three level VIENNA rectifier, including three-phase brachium pontis in parallel, every phase brachium pontis includes two fast recoveries two connected
Pole is managed, side, the midpoint series equivalent two-way switch S of each phase brachium pontisa、Sb、Sc, the IGBT that i.e. both direction is different manages, opposite side
Filtered device is connected with electrical network；The electric capacity C that two capacitances are identical is accessed at each brachium pontis input in parallel1、C2；In discrete capacitor
Point O connects the opposite side of each phase brachium pontis direction difference IGBT pipe；Two electric capacity midpoints connect the both direction difference of each phase brachium pontis
The other end of IGBT pipe, two capacitor DC outfan shunt load resistance RL, two IGBT pipe Ke You mono-tunnels of three-phase series
Pwm signal drives.Described wave filter is filter inductance La、Lb、Lc。
This topology belongs to BOOST structure, utilizes two switching tube differential concatenations equally to realize the effect of two-way switch,
Owing to two switch controlled modes of each phase are identical, not only reduce power device, reduce the cost of circuit, the most also
Reduce the complexity of control.Inductance is operated under BOOST state, and the electric current on inductance is continuous, there is not zero-sequence current；Open
Close the half that maximum pressure drop is busbar voltage that pipe bears, reduce the pressure of switching tube, it is possible to be well applied to high voltage
Occasion；Input current ripple is low, and power density is higher, and input inductance volume is little；Can run with unity power factor.
But owing to VIENNA rectifier existing wave filter, cause the total delayed input voltage of input current, permissible from Fig. 3
Will become apparent from reference voltage delayed power network current θ angle, commutator can realize unity power factor.Input current in angle, θ
Polarity is different from reference voltage polarity, and after input current reversing, reference voltage polarity changes not yet, and this will cause electricity
Road harmonic wave increases and cannot the problem such as guarantor unit's power factor.Therefore the present invention seeks to solve the delayed electrical network of reference voltage
The problem that in electric current θ angle, the polarity of input current is different from reference voltage equivalence dutycycle polarity, thus realize unit power
Reliability service.
In the present invention, the correction zero-sequence component of VIENNA rectifier injects modulator approach principle as in figure 2 it is shown, include:
Step 1: revise the instantaneous polarity of three-phase reference voltage according to the instantaneous polarity of three-phase input current；
Step 2: according to the space vector reference voltage that three-phase reference voltage is corresponding, calculates three-phase reference voltage after revising
Zero-sequence component；
Step 3: inject described zero-sequence component, and then the dual carrier SVM equivalence being calculated three-phase reference voltage corresponding accounts for
Empty ratio；
Step 4: based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives VIENNA rectifier.
Instantaneous polarity according to three-phase input current revises the process of the instantaneous polarity of three-phase reference voltage:
Calculate space vector reference voltage corresponding after three-phase reference voltage is multiplied by SVM equivalent gain；Each at space vector
In individual sector, if the instantaneous polarity of a phase input current is just, then the space vector that in respective sectors, this phase reference voltage is corresponding
Reference voltage keeps constant；Otherwise, space vector reference voltage superposition one correction value that this phase reference voltage is corresponding, wherein, repair
On the occasion of the maximum equal to three-phase reference voltage.
In step 1, three-phase reference voltage Uaref, Ubref, UcrefIt is multiplied by SVM equivalent gainCorresponding space vector
Reference voltage Vas, Vbs, Vcs, Vxs(x takes a, b, and c) span is [-1.15～1.15].
SVM equivalent gain isChangeless.Three-phase reference voltage is m*cos (θ 1), m*cos (θ 1+2 π/3),
M*cos (θ 1-2 π/3), wherein, m is the modulation ratio of three-phase reference voltage, and modulation ratio is m ∈ [0,1]；θ 1 is three-phase reference voltage
Modulation angle, θ 1 ∈ [0,2 π].
Therefore maximum modulation mmax=1.Such as mmaxIt is multiplied by SVM equivalent gainSinusoidal magnitude value maximum up to
1.15.After injecting zero-sequence component, modulation waveform maximum amplitude can be limited to 1 again, i.e. the DC voltage of SVM modulation utilizes
Rate is SPWM modulationAgain (SVM modulation system Inherent advantage).Therefore the modulation system that zero-sequence component is injected can be with SVM
Debud mode equivalence, modulation ratio is m ∈ [0,1].
Actual emulation waveform is as it is shown in figure 5, as shown in Figure 5, and the modulation of three-phase reference voltage is than for m=1.If citing reference
Voltage in the I of sector, now three-phase reference voltage a, b, c three-phase reference voltage amplitude and corresponding on off state such as Fig. 4
Shown in (a).According to input current ia, ib, icInstantaneous polarity, rather than VxsPolarity, revises V respectivelyxs, modification rule is as shown in table 1.
Table 1 each sector reference voltage correction value
If ix>=0, then V 'xs=Vxs, otherwise V 'xs=Vxs+1。
Revising rear space vector reference voltage actual waveform as shown in Figure 6, shown in Fig. 6, three-phase reference voltage is multiplied by SVM etc.
After effect gain, corresponding space vector reference voltage is that the modification rule according to table 1 obtains.
If citing reference voltage is in the I of sector, now three-phase reference voltage a, the revised ginseng of b, c three-phase instantaneous polarity
Examine shown in voltage magnitude and corresponding on off state such as Fig. 4 (b).
In step 2, by the V ' obtained in step 1as, V 'bs, V 'csSort by size respectively V 'max, V 'mid, V 'minAs
Shown in following formula:
Then zero-sequence component V is calculated 'com, expression formula is
V′com=(1-V 'max+V′min)·K-V′min
K value can be used for adjusting the neutral balance of three level VIENNA rectifier, value 1/2 when equivalent space is modulated in right amount.
In step 3, three phase space vector reference voltage Vas, Vbs, VcsPlus zero-sequence component V 'comObtain dual carrier SVM
Equivalence dutycycle d 'a、d’b、d’c, expression formula is
Zero-sequence component V after correction 'comAnd equivalence dutycycle d 'a、d’b、d’cIf actual waveform as it is shown in fig. 7, citing ginseng
Examine voltage in the I of sector, now three-phase reference voltage a, b, c three-phase reference voltage amplitude and corresponding on off state such as figure
Shown in 4 (c).
In step 4, equivalent dutycycle d of dual carrier SVM 'a、d’b、d’cVIENNA is obtained whole by dual carrier PWM
Switching signal S of stream devicea, Sb, Sc。
By MATLAB simulating, verifying Harmonics of Input aberration rate THD, it was demonstrated that the new method effect of proposition is notable.Emulation
Choice of software MATLAB/simulink 2014A, simulation parameter is as shown in table 2, the new method solution that proposes of simulation results show
In reference voltage of having determined delayed power network current θ angle, the input current of existence is inconsistent with reference voltage equivalence dutycycle polarity asks
Topic.
Table 2 each sector reference voltage correction value
| Electrical network phase voltage virtual value Vg(RMS) | 220V |
| DC voltage Vdc | 600V |
| DC bus capacitor C1、C2 | 1000μF |
| Output frequency f | 50Hz |
| Filter inductance L | 3mH |
| Line resistance Rs | 0.05Ω |
| Simulation step length | 2.5μs |
When Fig. 8 is according to reference voltage polarity correction, VIENNA rectifier input current ia、ib、icActual emulation ripple
Shape.From fft analysis 0.1s to 0.2s three-phase current waveform, now containing the harmonic wave caused because of angle of lag θ in a large number, electric current is the most humorous
Ripple aberration rate (THD) is THD=3.64%.
Fig. 9 is that the exchange after adding inventive algorithm surveys simulation result, through calculating its input current total harmonic distortion factor THD
=2.06%.
Comparison diagram 7 understands with Fig. 8 analysis result, and the VIENNA rectifier that zero-sequence component is injected in the correction that the present invention proposes is new
Type modulator approach, it is possible to reduce VIENNA rectifier Harmonics of Input aberration rate, and stable fortune under High Power Factor can be ensured
OK.
Present invention also offers the controller of a kind of VIENNA rectifier revised and inject zero-sequence component, including: three coherents
Examine the instantaneous polarity modified module of voltage, zero-sequence component computing module, equivalence dutycycle computing module and modulated signal and generate mould
Block.
(1) the instantaneous polarity modified module of three-phase reference voltage, it comes for the instantaneous polarity according to three-phase input current
Revise the instantaneous polarity of three-phase reference voltage.
The instantaneous polarity modified module of three-phase reference voltage, is additionally operable to calculate three-phase reference voltage and is multiplied by SVM equivalent gain
The space vector reference voltage of rear correspondence；In each sector of space vector, if the instantaneous polarity of a phase input current is just, then
The space vector reference voltage that in respective sectors, this phase reference voltage is corresponding keeps constant；Otherwise, this phase reference voltage is corresponding
Space vector reference voltage superposition one correction value, wherein, correction value is equal to the maximum of three-phase reference voltage.
(2) zero-sequence component computing module, it calculates for the space vector reference voltage corresponding according to three-phase reference voltage
The zero-sequence component of three-phase reference voltage after correction.
Zero-sequence component computing module also includes:
Space vector reference voltage order module, it is for by space vector reference corresponding for three-phase reference voltage after amendment
Voltage sorts by size, and obtains space vector reference voltage maximum V 'max, space vector reference voltage intermediate value V 'midAnd sky
Between vector reference voltage minimum V 'min；
Zero-sequence component acquisition module, it is for according to V 'com=(1-V 'max+V′min)·K-V′min, three-phase after being revised
The zero-sequence component of reference voltage, wherein, K value is for adjusting the neutral balance of VIENNA rectifier, for constant coefficient.
(3) equivalence dutycycle computing module, it is used for injecting described zero-sequence component, and then is calculated three-phase reference voltage
Corresponding dual carrier SVM equivalence dutycycle.
(4) modulated signal generation module, it, for based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives
Dynamic VIENNA rectifier.
SVM equivalent gain isThe space vector reference electricity that three-phase reference voltage is corresponding after being multiplied by SVM equivalent gain
The span of pressure is [-1.15～1.15].
VIENNA rectifier is when equivalent space Vector Modulation SVM, and K value is 1/2.
The present invention is by revising zero-sequence component, and the polarity electric current that cause different from reference voltage polarity solving electric current is humorous
Ripple aberration problems, improves the quality of power supply；The present invention can reduce wave filter on AC side design capacity, saves three level VIENNA whole
Stream body is long-pending, cost；This invention simplifies VIENNA modulator approach, reduce amount of calculation, it is easy to Digital Realization.
Controller based on the described VIENNA rectifier revised and inject zero-sequence component, present invention also offers one
VIENNA rectifier control system, including described controller；Described controller is used for receiving three-phase input current and three coherents
Examining voltage, output PWM modulation signal drives VIENNA rectifier.
The present invention is by revising zero-sequence component, and the polarity electric current that cause different from reference voltage polarity solving electric current is humorous
Ripple aberration problems, improves the quality of power supply；The present invention can reduce wave filter on AC side design capacity, saves three level VIENNA whole
Stream body is long-pending, cost；This invention simplifies VIENNA modulator approach, reduce amount of calculation, it is easy to Digital Realization.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. revise the VIENNA rectifier modulator approach injecting zero-sequence component for one kind, it is characterised in that including:
Step 1: revise the instantaneous polarity of three-phase reference voltage according to the instantaneous polarity of three-phase input current；
Step 2: according to the space vector reference voltage that three-phase reference voltage is corresponding, calculates the zero sequence of three-phase reference voltage after revising
Component；
Step 3: inject described zero-sequence component, and then calculate the dual carrier SVM equivalence dutycycle that three-phase reference voltage is corresponding；
Step 4: based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives VIENNA rectifier.
A kind of VIENNA rectifier modulator approach revising injection zero-sequence component the most as claimed in claim 1, it is characterised in that
In described step 1, the process of the instantaneous polarity that instantaneous polarity according to three-phase input current revises three-phase reference voltage is:
Calculate space vector reference voltage corresponding after three-phase reference voltage is multiplied by SVM equivalent gain；At each fan of space vector
In district, if the instantaneous polarity of a phase input current is just, then the space vector reference that in respective sectors, this phase reference voltage is corresponding
Voltage keeps constant；Otherwise, space vector reference voltage superposition one correction value that this phase reference voltage is corresponding, wherein, correction value
Maximum equal to three-phase reference voltage.
A kind of VIENNA rectifier modulator approach revising injection zero-sequence component the most as claimed in claim 1, it is characterised in that
SVM equivalent gain isThree-phase reference voltage is multiplied by SVM equivalent gainThe space vector reference voltage of rear correspondence
Span is [-1.15～1.15].
A kind of VIENNA rectifier modulator approach revising injection zero-sequence component the most as claimed in claim 1, it is characterised in that
The process of the zero-sequence component of three-phase reference voltage after revising that calculates is:
Space vector reference voltage corresponding for three-phase reference voltage after amendment is sorted by size, obtains space vector reference voltage
Maximum V 'max, space vector reference voltage intermediate value V 'midWith space vector reference voltage minimum V 'min；
The zero-sequence component V ' of three-phase reference voltage after correctioncom=(1-V 'max+V′min)·K-V′min, wherein, K value is used for adjusting
The neutral balance of VIENNA rectifier, for constant coefficient.
A kind of VIENNA rectifier modulator approach revising injection zero-sequence component the most as claimed in claim 4, it is characterised in that
VIENNA rectifier is when equivalent space Vector Modulation SVM, and K value is 1/2.
6. the controller revising the VIENNA rectifier injecting zero-sequence component, it is characterised in that including:
The instantaneous polarity modified module of three-phase reference voltage, it is for revising three-phase according to the instantaneous polarity of three-phase input current
The instantaneous polarity of reference voltage；
Zero-sequence component computing module, it calculates after revising for the space vector reference voltage corresponding according to three-phase reference voltage
The zero-sequence component of three-phase reference voltage；
Equivalence dutycycle computing module, it is used for injecting described zero-sequence component, and then it is corresponding to be calculated three-phase reference voltage
Dual carrier SVM equivalence dutycycle；
Modulated signal generation module, it, for based on dual carrier SVM equivalence dutycycle, generates PWM modulation signal and drives
VIENNA rectifier.
A kind of controller revising the VIENNA rectifier injecting zero-sequence component the most as claimed in claim 6, it is characterised in that
The instantaneous polarity modified module of described three-phase reference voltage, it is right to be additionally operable to after calculating three-phase reference voltage is multiplied by SVM equivalent gain
The space vector reference voltage answered；In each sector of space vector, if the instantaneous polarity of a phase input current is just, the most accordingly
The space vector reference voltage that in sector, this phase reference voltage is corresponding keeps constant；Otherwise, the space that this phase reference voltage is corresponding
Vector reference voltage superposition one correction value, wherein, correction value is equal to the maximum of three-phase reference voltage.
A kind of controller revising the VIENNA rectifier injecting zero-sequence component the most as claimed in claim 6, it is characterised in that
Zero-sequence component computing module includes:
Space vector reference voltage order module, it is for by space vector reference voltage corresponding for three-phase reference voltage after amendment
Sort by size, obtain space vector reference voltage maximum V 'max, space vector reference voltage intermediate value V 'midVow with space
Amount reference voltage minimum V 'min；
Zero-sequence component acquisition module, it is for according to V 'com=(1-V 'max+V′min)·K-V′min, three-phase reference after being revised
The zero-sequence component of voltage, wherein, K value is for adjusting the neutral balance of VIENNA rectifier, for constant coefficient.
A kind of controller revising the VIENNA rectifier injecting zero-sequence component the most as claimed in claim 8, it is characterised in that
VIENNA rectifier is when equivalent space Vector Modulation SVM, and K value is 1/2.
10. a VIENNA rectifier control system, it is characterised in that include the controller as described in claim 6-9 is arbitrary；
Described controller is used for receiving three-phase input current and three-phase reference voltage, and output PWM modulation signal drives VIENNA rectification
Device.
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| CN107147314A (en) * | 2017-06-13 | 2017-09-08 | 山东大学 | Correct the carrier modulating method of zero-sequence component injection |
| CN108923442A (en) * | 2018-08-29 | 2018-11-30 | 山东大学 | It is a kind of meter and unbalanced voltage oscillation suppressing method, controller and system |
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| CN107070193A (en) * | 2016-12-09 | 2017-08-18 | 南京理工大学 | A kind of method for being used to optimize Vienna rectifier input currents |
| CN107070193B (en) * | 2016-12-09 | 2019-06-25 | 南京理工大学 | A method of for optimizing Vienna rectifier input current |
| CN107147314A (en) * | 2017-06-13 | 2017-09-08 | 山东大学 | Correct the carrier modulating method of zero-sequence component injection |
| CN107147314B (en) * | 2017-06-13 | 2019-03-29 | 山东大学 | Correct the carrier modulating method of zero-sequence component injection |
| FR3067885A1 (en) * | 2017-06-15 | 2018-12-21 | Renault S.A.S | METHOD FOR CONTROLLING A VIENNA THREE PHASE RECTIFIER |
| CN110663163A (en) * | 2017-06-15 | 2020-01-07 | 雷诺股份公司 | Method for controlling a three-phase vienna rectifier |
| CN110663163B (en) * | 2017-06-15 | 2023-10-20 | 雷诺股份公司 | Method for controlling a three-phase Vienna rectifier |
| CN108923442A (en) * | 2018-08-29 | 2018-11-30 | 山东大学 | It is a kind of meter and unbalanced voltage oscillation suppressing method, controller and system |
| CN108923442B (en) * | 2018-08-29 | 2021-07-30 | 山东大学 | Unbalanced voltage oscillation suppression method, controller and system |
| CN108988395A (en) * | 2018-10-13 | 2018-12-11 | 曲阜师范大学 | A kind of topological structure and control method of the directly driven wind-powered current transformer of vertical axis permanent magnet |
| CN109660140A (en) * | 2018-10-30 | 2019-04-19 | 北方工业大学 | A kind of three level carrier modulator approaches |
| CN112953270A (en) * | 2021-02-07 | 2021-06-11 | 石家庄通合电子科技股份有限公司 | Three-phase three-level rectifier neutral point balance control method and device and terminal equipment |
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