CN101986552A - Rotor current control method of double-fed wind driven generator under power grid faults - Google Patents
Rotor current control method of double-fed wind driven generator under power grid faults Download PDFInfo
- Publication number
- CN101986552A CN101986552A CN2010105244729A CN201010524472A CN101986552A CN 101986552 A CN101986552 A CN 101986552A CN 2010105244729 A CN2010105244729 A CN 2010105244729A CN 201010524472 A CN201010524472 A CN 201010524472A CN 101986552 A CN101986552 A CN 101986552A
- Authority
- CN
- China
- Prior art keywords
- rotor
- under
- rotor current
- stator
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The invention belongs to the field of controlling a power conversion device of a wind driven generator, relating to a rotor current control method of a double-fed wind driven generator under power grid faults. The method comprises the following steps: obtaining the stator voltage and the rotor current under a two-phase static coordinates by utilizing the detected three-phase stator voltage and the three-phase rotor current through a 3/2 conversion module; calculating the stator magnetic flux linkage and the position angle; calculating the slip frequency angle and the slip frequency angular velocity; summating the stator magnetic flux linkage position angle and the rotor position angle, and then carrying out differentiation to obtain the sum of the magnetic flux linkage angular velocity and the rotor angular velocity; calculating the rotor current set values under the two-phase static coordinates of a rotor; respectively subtracting the rotor current set values under the two-phase static coordinates of the rotor with the rotor current under the two-phase static coordinates and obtaining the reference value of the rotor voltage under the two-phase static coordinates through the calculation by utilizing a performance requirement (PR) controller; and generating the switching signal of a control power device. The rotor current control method has the advantages that the rotor current oscillation of a double-fed induction generator (DFIG) resulted from power grid faults can be effectively inhibited, the grid in-service operation of the double-fed wind driven generator, and the operation performance of the DFIG under the power grid faults is enhanced.
Description
Technical field
The present invention relates to the control method of double-fed wind power generator under a kind of electric network fault (DFIG) rotor side inverter, belong to wind-driven generator control field.
Background technology
Because it is the stator side of double fed induction generators (DFIG) directly links to each other with electrical network, very responsive to electric network fault.Electric network fault can cause the generator unit stator voltage jump, and stator current produces vibration, and generator unit stator is meritorious simultaneously also oscillatory occurences can occur with reactive power and electromagnetic torque.In addition, because the close coupling between rotor and the stator, the stator voltage of sudden change can cause the rotor current fluctuation, has influence on the running status of double feedback electric engine.When electric network fault acquires a certain degree, be the security of operation of protection converter plant, the wind-powered electricity generation unit off-the-line from electrical network of will having to.The large-scale wind power unit will further worsen electrical network from grid disconnection, the stable operation of electrical network be caused have a strong impact on.To this, the power grid operation merchant requires the wind-powered electricity generation unit when line voltage falls fault, and wind-driven generator can not break away from electrical network within the specific limits, and provides meritorious and idle support to electrical network.For example, National Grid requirement wind energy turbine set in voltage range shown in Figure 1 can be incorporated into the power networks.The voltage range indication is a wind energy turbine set tie point voltage among the figure because there are electrical isolation in generator and tie point, during electric network fault generator terminal voltage fall degree can be less than tie point electric voltage dropping degree.
The home and abroad mainly is to have adopted the rotor short-circuit resist technology to the control method of DFIG rotor-side under the electric network fault at present.This method is when electric network fault, though protected exciter converter and rotor winding, generator operation need absorb a large amount of reactive powers from electrical network in the induction motor mode at this moment, and this will further worsen electrical network; The second, the switching operation of protective circuit can produce transient state to system and impact; In addition, add new protective device and improved system cost.Have the scholar to introduce novel topological structure, this scheme control is complicated, and because the generator off-grid operation when the transmission system fault of this scheme, therefore normal operation does not have positive support effect to power system restoration; Equally, this scheme need increase the cost of system.
Adopt improved excitation control algolithm by can remedy the influence that operation is caused to double feedback electric engine of line voltage fault to a certain extent to being controlled at of rotor-side.Its advantage is to need not to improve system cost, and can provide meritorious idle support to electrical network when electrical network falls.Therefore, be necessary to design the control method of DFIG rotor current under a kind of electric network fault.
Summary of the invention
The objective of the invention is to solve problems of the prior art, DFIG rotor current control method under a kind of electric network fault is provided, this method does not need to add extra hardware unit, can effectively suppress the DFIG rotor current vibration that electric network fault causes, realize being incorporated into the power networks under the double-fed wind power generator fault, improved the runnability of DFIG under electric network fault.
To achieve these goals, the present invention takes following technical scheme:
The double-fed wind power generator rotor current control method may further comprise the steps under a kind of electric network fault
(1) detect threephase stator voltage, three-phase rotor current and rotor position angle also calculate angular velocity of rotation;
(2) detected threephase stator voltage and three-phase rotor current are obtained stator voltage and rotor current under the two-phase rest frame through 3/2 conversion module;
(3) with the stator voltage signal under the stator two-phase rest frame through software phase-lock loop, obtain the stator magnetic linkage position angle; The rotor position angle that obtains according to step (1) calculates the slippage angle, and slippage angle differential is obtained slippage angular speed; Obtain magnetic linkage angular speed and rotor velocity sum with carrying out differential after stator magnetic linkage position angle and the rotor position angle summation;
(4) be that angle of transformation carries out anti-Park conversion with d, q axle rotor current reference value under the rotating coordinate system with the slippage angle, obtain the rotor current set-point under the rotor two-phase rest frame;
(5) rotor current under the two-phase rest frame that the rotor current set-point under the rotor two-phase rest frame that calculates in the step (4) is calculated with step (2) respectively subtracts each other, and passes through the reference value that ratio resonance (PR) controller calculates two-phase rest frame lower rotor part voltage then;
(6) the rotor voltage signal under the two-phase rest frame that step (5) is obtained produces the switching signal of power controlling device through after the space vector pulse width modulation.
As further execution mode, the PR controller described in the step (5), its transfer function is
PR controller medium frequency ω
c, ω
C1, ω
C2Be set to slippage angular speed, rotor velocity and rotor velocity and synchronous angular velocity sum respectively.
Control method of the present invention is under the situation of not changing hardware configuration, only two PI controllers of the vector control by tradition is meritorious, reactive power decoupling zero replace with the PR controller of band compensation term, its compensation term is used for the influence that compensation network instant of failure stator magnetic linkage DC component and negative sequence component produce generator amature, suppress the rotor overcurrent that the line voltage fault is brought, be incorporated into the power networks under the stable control of realization double-fed wind power generator and the fault.Simultaneously, because rotor current obtains fine inhibition, stator current, the vibration that stator is meritorious, reactive power and electromagnetic torque produce when the electrical network symmetry is fallen fault is also improved accordingly.
Description of drawings
Fig. 1 is the voltage range requirement of National Grid wind farm grid-connected operation during to electric network fault.
Fig. 2 is a double-fed wind power generator rotor Current Control schematic diagram under the electric network fault.
Fig. 3 is PR controller principle figure among the present invention.
Fig. 4 is the stator voltage 80% 3 symmetrical design sketch that adopts the conventional vector control method under the fault that falls, and (a) is stator three-phase voltage u among the figure
Sabc(KA); (b) be the rotor three-phase current i
Rabc(KA); (c) be stator three-phase current i
Sabc(KA); (d) be motor speed n (r/min); (e) be electromagnetic torque T
e(KNm); (f) be stator active power P
s(MW); (g) be the stator reactive power Q
s(MVar).
Fig. 5 is the stator voltage 80% 3 symmetrical design sketch that adopts control method of the present invention under the fault that falls, and (a) is stator three-phase voltage u among the figure
Sabc(KA); (b) be the rotor three-phase current i
Rabc(KA); (c) be stator three-phase current i
Sabc(KA); (d) be motor speed n (r/min); (e) be electromagnetic torque T
e(KNm); (f) be stator active power P
s(MW); (g) be the stator reactive power Q
s(MVar).
Fig. 6 relatively falls the design sketch that adopts the conventional vector control method under the fault for 80% liang of stator voltage, and (a) is stator three-phase voltage u among the figure
Sabc(KA); (b) be the rotor three-phase current i
Rabc(KA); (c) be stator three-phase current i
Sabc(KA); (d) be motor speed n (r/min); (e) be electromagnetic torque T
e(KNm); (f) be stator active power P
s(MW); (g) be the stator reactive power Q
s(MVar).
Fig. 7 relatively falls the design sketch that adopts control method of the present invention under the fault for 80% liang of stator voltage, and (a) is stator three-phase voltage u among the figure
Sabc(KA); (b) be the rotor three-phase current i
Rabc(KA); (c) be stator three-phase current i
Sabc(KA); (d) be motor speed n (r/min); (e) be electromagnetic torque T
e(KNm); (f) be stator active power P
s(MW); (g) be the stator reactive power Q
s(MVar).
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Electric network fault generally is divided into symmetric fault and unbalanced fault, and symmetric fault generally is to be caused by electrical network three relative ground circuits, and unbalanced fault is divided into single-phase shorted to earth fault, two relative ground circuit fault and phase faults.Falling of the generator unit stator voltage that electric network fault can cause, the variation of stator voltage will cause that the generator unit stator magnetic linkage changes.Normal condition issues the motor stator voltage equation can be expressed as the space vector form:
In the formula: u
s, i
s, ψ
s, R
sRepresent stator voltage under the rest frame, electric current, magnetic linkage and resistance respectively.
When electric network fault took place, stator voltage moment was fallen, and is ignoring under the situation of stator resistance, and by formula (1) as can be seen, stator magnetic linkage will and then change.Yet according to superconductor closed-loop path magnetic linkage conservation principle and Lenz's law as can be known, though sudden change has taken place stator voltage, instant of failure generator unit stator magnetic linkage will keep invariable.Be to produce transient DC component and negative sequence component (unbalanced fault) in the stator magnetic linkage to keep electric voltage dropping moment generator unit stator magnetic linkage constant.If consider the influence of stator resistance, this DC component and negative sequence component can be decayed in time.
Suppose that in fault taking place moment only considers electromagnetic transient, and disregard mechanical transient process, promptly generator keeps rotating speed constant during transient process.Because when fault took place, also with rotating speed rotation before the fault, the relative velocity of stator magnetic linkage DC component and rotor was a motor speed to generator amature, the relative velocity of same stator magnetic linkage negative sequence component and rotor is synchronous rotary speed and motor speed sum.Stator magnetic linkage DC component and negative sequence component can produce the influence that frequency is rotor speed, synchronous rotary speed and motor speed sum respectively to rotor flux.According to closed-loop path magnetic linkage conservation principle, in order to keep the rotor flux conservation, in the rotor loop frequency of occurrences is respectively the alternating current component of motor speed and synchronous rotary speed and motor speed sum, the magnetic linkage that these two alternating current components will produce two corresponding frequencies is respectively offset the influence of stator magnetic linkage to rotor.Rotor produced the main cause of big electric current when the alternating current that rotor is inducted promptly was the fault generation.
The analysis of the inner transient state electromagnetic relationship of wind-driven generator as can be known during according to above electric network fault, if suppress the induced current of rotor by compensation to rotor-exciting voltage, can offset the harmful effect of stator magnetic linkage transient DC component and negative sequence component, double-fed generator can be fallen at the line voltage three-phase guarantee being incorporated into the power networks of generator when fault takes place the generator amature side.
Fig. 2 is a double-fed wind power generator rotor Current Control schematic diagram under the electric network fault.Its control method specifically comprises the steps:
(1) adopt voltage sensor and current sensor to detect threephase stator voltage u respectively
Sabc, three-phase rotor current i
Rabc, adopt encoder detection rotor angular position theta
rAnd calculating angular velocity of rotation ω
r
(2) with the detected threephase stator voltage of step (1) u
SabcWith three-phase rotor current i
RabcObtain stator voltage u under the two-phase rest frame through 3/2 conversion module
S α, u
S βWith rotor current i
R α, i
R β
(3) with the stator voltage signal u under the stator two-phase rest frame
S α, u
S βThrough software phase-lock loop, obtain the stator magnetic linkage angular position theta
sThe rotor position angle θ that obtains according to step (1)
rCalculate slippage angle θ
s-θ
r, slippage angle differential is obtained the slippage angular velocity omega
SlWith the stator magnetic linkage angular position theta
sWith rotor position angle θ
rCarry out differential after the summation and obtain magnetic linkage angular speed and rotor velocity sum ω
Sr
(4) with d, q axle rotor current reference value i under the rotating coordinate system
Rd *And i
Rq*With the slippage angle is that angle of transformation carries out anti-Park conversion, obtains the rotor current set-point i under the rotor two-phase rest frame
R α *, i
R β *
(5) with the rotor current set-point i under the rotor two-phase rest frame that calculates in the step (4)
R α *, i
R β *Rotor current i under the two-phase rest frame that is calculated with step (2) respectively
R α, i
R βSubtract each other, calculate the reference value u of two-phase rest frame lower rotor part voltage then through the PR controller
S α *, u
S β *
(6) the rotor voltage signal u under the two-phase rest frame that step (5) is obtained
S α *, u
S β *Through after the space vector pulse width modulation, produce the switching signal of power controlling device.
Among Fig. 2 the concrete form of PR controller as shown in Figure 3, its transfer function is
For suppressing the rotor current that stator causes under the electric network fault stationary rotor coordinate system lower frequency is respectively motor speed and motor speed and synchronous angular velocity sum, PR controller medium frequency ω
c, ω
C1, ω
C2Be set to the slippage angular velocity omega respectively
Sl, rotor velocity ω
rWith rotor velocity and synchronous angular velocity sum ω
Sr
Key points in design of the present invention promptly is under above-mentioned electric network fault in the double-fed wind power generator rotor current control method, by analyzing the reason that overcurrent produces and the characteristics of overcurrent, the induced current of the particular frequencies that the compensation term of utilizing the PR controller produces during to rotor fault suppresses.Realized being incorporated into the power networks of double-fed wind power generator under the electric network fault.
Be the correctness of proof theory and the validity of compensation control strategy, suppose that electric network fault makes under the condition that the generator unit stator set end voltage falls, the method that adopts the present invention to propose is the control of 1.5MW DFIG system implementation to a rated power, and rotor current has been converted stator side.Be located in the control procedure and keep wind-driven generator to be incorporated into the power networks all the time, and frequency converter operate as normal all the time.
Electric network fault lower rotor part Current Control Strategy to traditional stator flux linkage orientation vector control strategy and proposition compares, and Fig. 4 and Fig. 5 are respectively and adopt traditional double-fed wind powered generator control method and control method of the present invention at the stator voltage 80% 3 symmetrical operation result that falls under the condition that electric network fault causes.Line voltage falls constantly at 0.1s, recovers normal constantly at 0.3s.When traditional control method of Fig. 3 takes place in the electric network electric voltage drop fault, because stator voltage changes the influence of the stator magnetic linkage DC component that is produced, the stator and rotor electric current of DFIG significantly increases during electric network electric voltage drop, the current limit value that will surpass converter plant in the real system, cause wind turbine generator will have to and grid disconnection, this both had been unfavorable for the stable operation of generator, also was unfavorable for the fault recovery and the stable operation of electrical network.Stator is meritorious, reactive power and electromagnetic torque have all produced thermal agitation, and vibration significantly meritorious, reactive power will influence stablizing of electrical network, and the thermal agitation of electromagnetic torque will cause the generator mechanical failure.Compare with traditional control method, Fig. 5 control method has effectively been eliminated the rotor current pulsation under the electric network fault, suppressed the generation of rotor overcurrent, simultaneously stator current, meritorious, reactive power and electromagnetic torque pulsation obviously reduce, and motor can send the recovery that lasting meritorious, reactive power are supported electrical network.The wind turbine generator of this method control satisfies the condition that is incorporated into the power networks under the fault, has improved the operation control ability of DFIG under the electric network fault condition, has improved the dynamic quality of control system.
Fig. 6 and Fig. 7 are respectively and adopt traditional double-fed wind powered generator control method and the inventive method to fall operation result under the condition in stator voltage 80% two-phase that electric network fault causes.Line voltage falls constantly at 0.1s, recovers normal constantly at 0.3s.Find out that by Fig. 6 electric network fault takes place and the recovery moment, stator and rotor electric current generation thermal agitation produces serious overcurrent, and at this moment protective device must start the safety with the protection frequency converter.Necessary and the grid disconnection of generating set has further influenced the recovery of electric network fault.
Fig. 7 is the control design sketch of the inventive method, takes place and recovers constantly at electric network fault among the figure, and this control method has effectively suppressed the pulsation of the rotor current that caused by stator magnetic linkage DC component and negative sequence component.The vibration of electric current is very little, does not influence the operation of wind turbine generator.By finding out among Fig. 7, after line voltage recovered, rotating speed was very fast controlled, satisfies the requirement that wind-driven generator is incorporated into the power networks under the electrical network catastrophe failure.
In sum, control method of the present invention is compared with traditional stator flux linkage orientation vector controlled, and under electric network fault, control system can effectively be eliminated the current fluctuation of rotor, suppress the generation of rotor overcurrent, strengthened the run without interruption ability of DFIG wind-powered electricity generation unit under electric network fault; Institute's control system algorithm of carrying is simple, only need to tradition is meritorious, the PI controller of electric current loop changes the PR controller that contains the harmonic compensation item in the reactive power decoupling zero vector controlled, just can suppress the rotor overcurrent that electric network fault brings, and the rotor current that reduces is to the impact of stator magnetic linkage, so that the stator overcurrent has also obtained obvious inhibition.
Claims (2)
1. double-fed wind power generator rotor current control method under the electric network fault is characterized in that may further comprise the steps:
(1) detect threephase stator voltage, three-phase rotor current and rotor position angle also calculate angular velocity of rotation;
(2) detected threephase stator voltage and three-phase rotor current are obtained stator voltage and rotor current under the two-phase rest frame through 3/2 conversion module;
(3) with the stator voltage signal under the stator two-phase rest frame through software phase-lock loop, obtain the stator magnetic linkage position angle; The rotor position angle that obtains according to step (1) calculates the slippage angle, and slippage angle differential is obtained slippage angular speed; Obtain magnetic linkage angular speed and rotor velocity sum with carrying out differential after stator magnetic linkage position angle and the rotor position angle summation;
(4) be that angle of transformation carries out anti-Park conversion with d, q axle rotor current reference value under the rotating coordinate system with the slippage angle, obtain the rotor current set-point under the rotor two-phase rest frame;
(5) rotor current under the two-phase rest frame that the rotor current set-point under the rotor two-phase rest frame that calculates in the step (4) is calculated with step (2) respectively subtracts each other, and calculates the reference value of two-phase rest frame lower rotor part voltage then through the ratio resonant controller;
(6) the rotor voltage signal under the two-phase rest frame that step (5) is obtained produces the switching signal of power controlling device through after the space vector pulse width modulation.
2. double-fed wind power generator rotor current control method under the electric network fault according to claim 1, the transfer function that it is characterized in that the ratio resonant controller described in the step (5) is a following formula, frequencies omega wherein
c, ω
C1, ω
C2Be set to slippage angular speed, rotor velocity and rotor velocity and synchronous angular velocity sum respectively:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105244729A CN101986552B (en) | 2010-10-28 | 2010-10-28 | Rotor current control method of double-fed wind driven generator under power grid faults |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105244729A CN101986552B (en) | 2010-10-28 | 2010-10-28 | Rotor current control method of double-fed wind driven generator under power grid faults |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101986552A true CN101986552A (en) | 2011-03-16 |
CN101986552B CN101986552B (en) | 2012-07-04 |
Family
ID=43710868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010105244729A Expired - Fee Related CN101986552B (en) | 2010-10-28 | 2010-10-28 | Rotor current control method of double-fed wind driven generator under power grid faults |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101986552B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102570962A (en) * | 2012-02-03 | 2012-07-11 | 阳光电源股份有限公司 | Double-fed wind power generation high-voltage through control structure, and generator and generation system providing with double-fed wind power generation high-voltage through control structure |
CN102723885A (en) * | 2012-06-26 | 2012-10-10 | 天津大学 | Proportional resonant control method for triple modular redundant line voltage cascaded rectifier |
CN103326595A (en) * | 2012-03-19 | 2013-09-25 | 上海利思电气有限公司 | Novel three-phase equilibrium reversible PWM rectifying device |
CN103490692A (en) * | 2013-10-13 | 2014-01-01 | 中国船舶重工集团公司第七一二研究所 | Polyphase permanent magnet synchronous motor current waveform optimal control method |
CN103904970A (en) * | 2014-04-14 | 2014-07-02 | 东南大学 | Method for controlling PWM converter on electric generator side of nine-phase permanent magnetic wind power generating system |
CN104269869A (en) * | 2014-09-28 | 2015-01-07 | 国家电网公司 | Proportional resonance control method used for PWM converter and involving parameter optimization |
CN104852658A (en) * | 2015-05-28 | 2015-08-19 | 西北工业大学 | Permanent magnet synchronous motor decoupling vector control device in two-phase stationary coordinate system and method thereof |
CN104967375A (en) * | 2015-07-07 | 2015-10-07 | 河南师范大学 | Doubly-fed wind generator rotor magnetic linkage prediction control method under power grid failure |
CN104967377A (en) * | 2015-07-07 | 2015-10-07 | 河南师范大学 | Doubly-fed wind generator rotor linkage constant-frequency model prediction control method |
CN104993756A (en) * | 2015-07-07 | 2015-10-21 | 河南师范大学 | Fault operation method under doubly-fed wind power generator stator and rotor flux weak magnetic control |
CN110165954A (en) * | 2019-05-30 | 2019-08-23 | 湖南师范大学 | A kind of dual feedback wind power generation system generator-side converter wear model predictive control method |
CN112583314A (en) * | 2020-11-25 | 2021-03-30 | 国网冀北电力有限公司电力科学研究院 | Dynamic characteristic measuring method and system of doubly-fed generator excitation system |
CN114325379A (en) * | 2021-07-12 | 2022-04-12 | 陕西航空电气有限责任公司 | Motor rotor position fault mark determination method and system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101117945A (en) * | 2007-09-11 | 2008-02-06 | 天津大学 | Wind generating set yaw device |
CN101141097A (en) * | 2007-09-11 | 2008-03-12 | 天津大学 | Two-stage matrix convertor for megawatt wind power generation |
CN101764529A (en) * | 2010-04-02 | 2010-06-30 | 天津大学 | Method for restricting midpoint potential drifting of three-level inverter in direct drive wind power system |
-
2010
- 2010-10-28 CN CN2010105244729A patent/CN101986552B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101117945A (en) * | 2007-09-11 | 2008-02-06 | 天津大学 | Wind generating set yaw device |
CN101141097A (en) * | 2007-09-11 | 2008-03-12 | 天津大学 | Two-stage matrix convertor for megawatt wind power generation |
CN101764529A (en) * | 2010-04-02 | 2010-06-30 | 天津大学 | Method for restricting midpoint potential drifting of three-level inverter in direct drive wind power system |
Non-Patent Citations (1)
Title |
---|
《中国电机工程学报》 20090525 陈炜等 双馈风力发电系统双PWM变换器比例谐振控制 1-7 1-2 , 2 * |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102570962B (en) * | 2012-02-03 | 2014-03-26 | 阳光电源股份有限公司 | Double-fed wind power generation high-voltage through control structure, and generator and generation system |
CN102570962A (en) * | 2012-02-03 | 2012-07-11 | 阳光电源股份有限公司 | Double-fed wind power generation high-voltage through control structure, and generator and generation system providing with double-fed wind power generation high-voltage through control structure |
CN103326595B (en) * | 2012-03-19 | 2016-01-13 | 利思电气(上海)有限公司 | A kind of Novel three-phase equilibrium reversible PWM rectifying device |
CN103326595A (en) * | 2012-03-19 | 2013-09-25 | 上海利思电气有限公司 | Novel three-phase equilibrium reversible PWM rectifying device |
CN102723885A (en) * | 2012-06-26 | 2012-10-10 | 天津大学 | Proportional resonant control method for triple modular redundant line voltage cascaded rectifier |
CN103490692A (en) * | 2013-10-13 | 2014-01-01 | 中国船舶重工集团公司第七一二研究所 | Polyphase permanent magnet synchronous motor current waveform optimal control method |
CN103490692B (en) * | 2013-10-13 | 2016-02-24 | 中国船舶重工集团公司第七一二研究所 | A kind of multiphase permanent magnet synchronous motor motor current waveform optimal control method |
CN103904970A (en) * | 2014-04-14 | 2014-07-02 | 东南大学 | Method for controlling PWM converter on electric generator side of nine-phase permanent magnetic wind power generating system |
CN103904970B (en) * | 2014-04-14 | 2017-01-18 | 东南大学 | Method for controlling PWM converter on electric generator side of nine-phase permanent magnetic wind power generating system |
CN104269869A (en) * | 2014-09-28 | 2015-01-07 | 国家电网公司 | Proportional resonance control method used for PWM converter and involving parameter optimization |
CN104269869B (en) * | 2014-09-28 | 2016-06-01 | 国家电网公司 | The proportional resonant control method of a kind of PWM converter relating to parameter optimization |
CN104852658B (en) * | 2015-05-28 | 2017-12-26 | 西北工业大学 | Permagnetic synchronous motor decoupling vector control apparatus and method under two-phase rest frame |
CN104852658A (en) * | 2015-05-28 | 2015-08-19 | 西北工业大学 | Permanent magnet synchronous motor decoupling vector control device in two-phase stationary coordinate system and method thereof |
CN104993756A (en) * | 2015-07-07 | 2015-10-21 | 河南师范大学 | Fault operation method under doubly-fed wind power generator stator and rotor flux weak magnetic control |
CN104967377A (en) * | 2015-07-07 | 2015-10-07 | 河南师范大学 | Doubly-fed wind generator rotor linkage constant-frequency model prediction control method |
CN104967375A (en) * | 2015-07-07 | 2015-10-07 | 河南师范大学 | Doubly-fed wind generator rotor magnetic linkage prediction control method under power grid failure |
CN110165954A (en) * | 2019-05-30 | 2019-08-23 | 湖南师范大学 | A kind of dual feedback wind power generation system generator-side converter wear model predictive control method |
CN112583314A (en) * | 2020-11-25 | 2021-03-30 | 国网冀北电力有限公司电力科学研究院 | Dynamic characteristic measuring method and system of doubly-fed generator excitation system |
CN114325379A (en) * | 2021-07-12 | 2022-04-12 | 陕西航空电气有限责任公司 | Motor rotor position fault mark determination method and system |
CN114325379B (en) * | 2021-07-12 | 2023-06-20 | 陕西航空电气有限责任公司 | Method and system for determining motor rotor position fault sign |
Also Published As
Publication number | Publication date |
---|---|
CN101986552B (en) | 2012-07-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101986552B (en) | Rotor current control method of double-fed wind driven generator under power grid faults | |
CN101977006B (en) | Method for controlling double-fed wind driven generator in power grid faults | |
CN101977011B (en) | Control method of double-fed induction generator under power grid voltage three-phase symmetrical drop fault | |
CN102082541B (en) | Overcurrent inhibition method for doubly-fed wind driven generator rotor in grid fault | |
CN107425539B (en) | Enhanced low-voltage ride-through control method of doubly-fed wind turbine generator under asymmetric power grid fault | |
CN102055208B (en) | Low-voltage traversing control method for double-fed wind power generation system | |
CN103050991B (en) | Control system for low voltage ride through of doubly-fed wind generator | |
WO2023185661A1 (en) | Control system for self-synchronizing voltage source full-power conversion wind turbine generator | |
CN102214931A (en) | Device and method for low voltage ride through of double-fed inductive wind power generator system | |
CN101505131A (en) | Asymmetric direct power control method for dual feed asynchronous wind power generator | |
CN110380449B (en) | Coordination control method for wind power direct current sending system under single-pole locking fault | |
Qiao et al. | Improved control of DFIG wind turbines for operation with unbalanced network voltages | |
CN104253446B (en) | A kind of asymmetrical voltage of double-fed wind power generator rises sharply control method | |
CN108321809B (en) | Wind power plant dynamic reactive power compensation method under three-phase unbalanced drop fault of power grid voltage | |
Ali | Utilizing active rotor-current references for smooth grid connection of a DFIG-based wind-power system | |
Alsmadi et al. | Comprehensive analysis of the dynamic behavior of grid-connected DFIG-based wind turbines under LVRT conditions | |
Zheng et al. | A continuous fault ride-through scheme for DFIGs under commutation failures in LCC-HVDC transmission systems | |
CN105634014B (en) | Dual-feed asynchronous wind power generator group control method based on dynamic voltage compensator | |
CN111917129A (en) | Zero voltage ride through control method for doubly-fed wind generator | |
CN106786775A (en) | Brushless dual-feedback wind power generator asymmetrical voltage failure magnetic linkage tracks low-voltage ride-through method | |
CN105305911A (en) | Method for suppressing low-frequency current oscillation of double-fed asynchronous motor | |
Song et al. | High voltage ride-through control method for DFIG-based wind turbines based on Resonant Controller | |
Zhou et al. | Control and protection of a DFIG-based wind turbine under unbalanced grid voltage dips | |
Wenhua et al. | Research on Damping Control Strategy for Distributed Synchronous Condensers to Suppress the Subsynchronous Oscillation Caused by New Energy | |
Liu et al. | Adaptive Virtual Impedance Current Limiting Strategy for Grid-Forming Converter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20211028 |
|
CF01 | Termination of patent right due to non-payment of annual fee |