CN106787871B - A kind of LC code converter of multivariable feedback controller - Google Patents

A kind of LC code converter of multivariable feedback controller Download PDF

Info

Publication number
CN106787871B
CN106787871B CN201611099464.8A CN201611099464A CN106787871B CN 106787871 B CN106787871 B CN 106787871B CN 201611099464 A CN201611099464 A CN 201611099464A CN 106787871 B CN106787871 B CN 106787871B
Authority
CN
China
Prior art keywords
axis
adder
controller
compensator
output quantity
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.)
Active
Application number
CN201611099464.8A
Other languages
Chinese (zh)
Other versions
CN106787871A (en
Inventor
彭力
康勇
林新春
漆宇
吴伟标
黄泽毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huazhong University of Science and Technology
Original Assignee
Huazhong University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huazhong University of Science and Technology filed Critical Huazhong University of Science and Technology
Priority to CN201611099464.8A priority Critical patent/CN106787871B/en
Publication of CN106787871A publication Critical patent/CN106787871A/en
Application granted granted Critical
Publication of CN106787871B publication Critical patent/CN106787871B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters

Abstract

The invention discloses the LC code converters and method of a kind of multivariable feedback controller, including first adder, second adder, third adder, the 4th adder, d axis controller, q axis controller, d axis compensator and q axis compensator；The input terminal of d axis controller is connected to the output end of first adder, and the first input end of third adder is connected to the output end of d axis controller, and the second input terminal is connected to the output end of d axis compensator, the input terminal connection status amount of d axis compensator；The output of third adder is d axis modulated signal；The input terminal of q axis controller is connected to the output end of second adder, and the first input end of the 4th adder is connected to the output end of q axis controller, and the second input terminal is connected to the output end of q axis compensator, the input terminal connection status amount of q axis compensator；The output of 4th adder is q axis modulated signal.The present invention has the characteristics that stability is good, stable state accuracy is high, dynamic response fluctuation is small and fireballing.

Description

A kind of LC code converter of multivariable feedback controller
Technical field
The invention belongs to LC code converter fields, more particularly, to a kind of LC code converter of multivariable feedback controller And method.
Background technique
Three phase supply power supply increasingly increases using relatively broad and demand in power equipment, while proposing more to power quality High target requirement.In order to be respectively controlled to active component and reactive component, three-phase inverter more selects to sit in rotation Mark system is lower to implement control, and the direct current instruction that conventional PI control device is intrinsic under rotating coordinate system has DAZ gene energy Power.But the coupling terms that coordinate transform introduces between rotatable coordinate axis will lead to system can not be real to active component and reactive component Now real independent control, and the output performance of converter can be reduced.The mathematical model of three-phase LC code converter is in rotational coordinates There are two pairs of coupling terms between axis, thus face dq decoupling problem when implementing control.In addition, single-phase LC code converter can also lead to The realization of construction two-phase stationary coordinate system is crossed to be controlled under dq axis rotating coordinate system, because adjusting at this time is DC quantity, therefore It can be implemented with simple PI controller.However, mathematical model and the transformation of three-phase LC type under the dq axis rotating coordinate system constructed Device can equally introduce two pairs of coupling amounts, and output performance is caused to reduce.Therefore, dq axis coupled problem is not limited to three phase inversions Device.For convenience of statement, involved converter is still illustrated by taking three-phase inverter as an example.
Aiming at the problem that LC code converter decoupling control under rotating coordinate system, existing literature mostly uses greatly filter inductance electric Stream forms inner ring by sampling to improve outer voltage control object characteristic.On the basis of current inner loop, by inductive current and capacitor Voltage passes through Proportional Feedback to current regulator output end and voltage regulator output to realize decoupling respectively.But this method There are following two points: must sample inductive current first to form double -loop control, increase hardware cost；Secondly, capacitance voltage coupling Closing item can realize that decoupling be that the assumed condition for being 1 based on inductive current inner ring gain is just set up by Proportional Feedback, but actually The impossible whole frequency ranges of current inner loop gain are all close to 1, thus decoupling effect is affected by electric current loop.
Summary of the invention
In view of the drawbacks of the prior art, the purpose of the present invention is to provide a kind of transformation of the LC type of multivariable feedback controller Device, it is intended to solve in the prior art since to there is the weak caused stability of itself damping not strong for LC code converter, and due to Dq axis rotating coordinate system, which is implemented to introduce when control, couples caused output voltage problem of low quality.
The invention discloses the LC code converters and method of a kind of multivariable feedback controller, including first adder, second Adder, third adder, the 4th adder, d axis controller, q axis controller, d axis compensator and q axis compensator；First adds The first input end of musical instruments used in a Buddhist or Taoist mass connects capacitance voltage d axis specified rate, and the second input terminal connection capacitance voltage d axis of first adder is defeated Output, the input terminal of d axis controller are connected to the output end of first adder, and the first input end of third adder is connected to d The output end of axis controller, the second input terminal of third adder are connected to the output end of d axis compensator, d axis compensator it is defeated Enter end connection d, q Spindle Status amount；The output of third adder is d axis modulated signal；The first input end of second adder connects electricity Hold voltage q axis specified rate, the second input terminal of second adder connects capacitance voltage q axis output quantity, the input terminal of q axis controller It is connected to the output end of second adder, the first input end of the 4th adder is connected to the output end of q axis controller, and the 4th adds Second input terminal of musical instruments used in a Buddhist or Taoist mass is connected to the output end of q axis compensator, and the input terminal of q axis compensator connects d, q Spindle Status amount；4th Adder output is q axis modulated signal.
Further, the d axis controller and the q axis controller are PI controller.
Further, the PI controllerWherein, KpIndicate proportionality coefficient, KiFor integral coefficient, s It is complex variable.
Further, which is characterized in that the d axis compensator Gcom,dIt include: feedback function-GN1And feedback function GN2, Wherein GN1=g0+sg1、GN2=sq1, g0And g1Indicate corresponding GN1Coefficient, q1Indicate corresponding GN2Coefficient, s is complex variable.
Further, which is characterized in that the q axis compensator Gcom,qIt include: feedback function GN2And feedback function GN1, Wherein GN1=g0+sg1、GN2=sq1, g0And g1Indicate corresponding GN1Coefficient, q1Indicate corresponding GN2Coefficient, s is complex variable.
The present invention also provides a kind of multivariable feedback controller methods based on above-mentioned LC code converter, including following steps It is rapid:
Capacitance voltage d, q axis output quantity is sent into d axis compensator, capacitance voltage d axis specified rate uc,d *With capacitance voltage d axis Output quantity uc,dThe margin of error be sent to the input terminal of d axis controller, by the feedback function of flexible modulation d axis compensator, then The output quantity of d axis controller is added with the output quantity of d axis compensator to get d axis modulation wave signal；At the same time, capacitance voltage D, q axis output quantity is sent into q axis compensator, capacitance voltage q axis specified rate uc,q *With capacitance voltage q axis output quantity uc,qThe margin of error It is sent to the input terminal of q axis controller, by the feedback function of flexible modulation q axis compensator, the then output quantity of q axis controller Subtract each other with the output quantity of q axis compensator to get q axis modulation wave signal.
Further, closed loop of capacitance voltage d, q axis specified rate of LC code converter to capacitance voltage d, q axis output quantity Transmission function and characteristic equation are as follows:
WhereinBy dq axis Physical quantity indicates that d axis represents real part with plural form, and q axis represents imaginary part；If it is expected that configuration system closed loop dominant apices areAnd non-dominant pole is p3=-m ξ ωn, closed-loop zero z1=-h ξ ωn.According to state space Theoretical knowledge configures close_loop zero pole, can obtain the expression formula of all undetermined parameters.Specifically:g1=L1C[(m+2)ξωn]/Ginv；q1=-2 ω0L1C/Ginv。
Compared with the prior art, the present invention has the following advantages:
(1) the multivariable feedback controller structure proposed can significantly improve the damping characteristic of LC code converter, realize dq axis Full decoupled and zero pole point flexible configuration.It can make system that there is very high stability, very wide control bandwidth, to make It is small to obtain rapid dynamic response speed, oscillation amplitude；Utilize the synergic adjustment of controller and compensator in multivariable feedback controller structure Effect keeps output voltage quality high.
(2) the multivariable feedback controller Parameters design proposed can combine the stability of LC code converter, control Bandwidth processed, stable state accuracy etc. carry out control parameter design in the case where requiring, it is easy to guarantee that system has superior sound state Performance.
(3) the multivariable feedback controller structure and Parameters design proposed can guarantee that system parameter becomes in larger range Still there is very strong robustness when change, therefore significantly improve the Ability of Resisting Disturbance of LC code converter, in operating condition mutation Output voltage remains to obtain preferable response wave shape.
(4) the multivariable feedback controller Parameters design proposed can obtain controller, compensator multiple parameters simultaneously Design result, thus design procedure facilitate it is succinct.
Detailed description of the invention
Fig. 1 is the multivariable feedback controller structural block diagram of LC code converter
Fig. 2 is the main circuit diagram of LC code converter
Fig. 3 is the multivariable feedback controller block diagram of LC code converter
Fig. 4 is the block diagram of d axis compensator and q axis compensator in multivariable feedback controller
Specific implementation method
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
The present invention utilizes complex vector analysis method for LC code converter, proposes a kind of multivariable feedback controller structure. On this basis, the Parameters design of multivariable feedback controller structure is proposed.The multivariable feedback controller strategy can change Kind damping capacity realizes the full decoupled and flexible configuration due to zero pole point of rotational coordinates between centers and significantly improves dynamic Energy.
For the LC code converter of further description multivariable feedback controller provided in an embodiment of the present invention, now in conjunction with Details are as follows for accompanying drawings and embodiments:
Fig. 1 is the multivariable feedback controller structural block diagram of LC code converter, including d axis controller, q axis controller, d axis benefit Repay device, q axis compensator, LC code converter equivalent gain and LC mode filter (control object).The control of LC code converter is being revolved Turn to implement under coordinate system, capacitance voltage d, q axis output quantity and (the LC type transformation of d, q Spindle Status amount are detected first from control object Capacitance voltage d, q axis output quantity is also quantity of state in device).Secondly, by capacitance voltage d axis specified rateIt is defeated with capacitance voltage d axis Output xdThe margin of error be sent to d axis controller (can be PI control, Repetitive controller or resonance control etc.) input terminal；Together Reason, by capacitance voltage q axis specified rateWith capacitance voltage q axis output quantity xqThe margin of error be sent to q axis controller and (can be PI Control, Repetitive controller or resonance control etc.) input terminal.Again, quantity of state (ad,aq...) and be sent to d axis compensator (can be with It is a feedback function, can also be multiple feedback functions) after, by the feedback function of flexible modulation d axis compensator, then by d The output quantity of axis controller is added with the output quantity of d axis compensator, and resulting value is the d axis modulated signal of LC code converter； Similarly, quantity of state (ad,aq...) and it is sent to q axis compensator (can be a feedback function, can also be multiple feedback functions) Afterwards, by the feedback function of flexible modulation q axis compensator, then by the output quantity of the output quantity of q axis controller and q axis compensator Subtract each other, resulting value is the q axis modulated signal of LC code converter.D, q axis modulated signal passes through amplifier respectively and obtains LC Corresponding d, q shaft voltage u of bridge arm midpoint output voltage of code converterinv,dAnd uinv,q.This multivariable feedback controller structure can To be effectively improved the damping characteristic of LC code converter, the full decoupled zero pole point with arbitrary disposition system of dq axis is realized.
Fig. 2 gives the main circuit diagram of LC code converter.L1a、L1bAnd L1cRespectively transducer side A, B, C three-phase filtered electrical Sense, R1a、R1bAnd R1cRespectively transducer side A, B, C three-phase considers the equivalent series resistance of inductance, the transformation dead zone bridge PWM effect It answers, the synthesis equivalent resistance of the damping factors such as switching tube conduction voltage drop and line resistance.Cab、CbcAnd CcaFor tri- phase transformation of A, B, C The triangular form structure filter capacitor of parallel operation.udcFor DC terminal voltage, uinv,a、uinv,bAnd uinv,cFor A, B, C three-phase bridge arm midpoint phase Voltage, uC,a、uC,bAnd uC,cRespectively A, B, C three-phase filter capacitor phase voltage, i1,b、i1,bAnd i1,cRespectively tri- phase transformation of A, B, C The filter inductance phase current of parallel operation side, iC,a、iC,bAnd iC,cRespectively A, B, C three-phase filter capacitor phase current, io,a、io,bAnd io,c Respectively A, B, C threephase load electric current.
As shown in Fig. 2, the main circuit equation expression formula under ABC coordinate system is obtained using KVL and KCL theorem, using After CLARK and PRAK transformation, it can obtain under dq rotating coordinate system shown in LC code converter circuit equation such as formula (1):
Wherein, uinv,dq=[uinv,d,uinv,q]TIt is expressed as corresponding d, q axis electricity of LC code converter bridge arm midpoint phase voltage Pressure, i1,dq=[i1,d,i1,q]TIt is expressed as corresponding d, q shaft current of LC code converter side inductive current, uc,dq=[uc,d,uc,q]T It is expressed as corresponding d, q shaft voltage of filter capacitor phase voltage (i.e. capacitance voltage d, q axis output quantity) of LC code converter, io,dq= [io,d,io,q]TIt is expressed as corresponding d, q shaft current of load current of LC code converter.ω0It is expressed as fundamental wave frequency, j is indicated For the imaginary axis.A, B, C three-phase LC code converter main circuit parameter are consistent under normal circumstances, therefore can simply remember: L1a=L1b=L1c= L1, Cab=Cbc=Cca=C/3, R1a=R1b=R1c=R1。
Fig. 3 is the multivariable feedback controller block diagram of LC code converter, it is contemplated that the stability problem of LC code converter, therefore Ignore stray resistance R1To represent a kind of worst situation of damping.At the same time, the resonance frequency of LC mode filter isD axis controller and q axis controller are G in multivariable feedback controller block diagramu, d axis compensator and q axis Compensator is respectively Gcom,dAnd Gcom,q.By capacitance voltage d, q axis output quantity [uc,d,uc,q]TIt is sent into d axis compensator, capacitance voltage d Axis specified rate uc,d *With capacitance voltage d axis output quantity uc,dThe margin of error be sent to the input terminal of d axis controller, by flexibly adjusting The feedback function of d axis compensator is saved, then the output quantity of d axis controller is added with the output quantity of d axis compensator to get d axis tune Wave signal processed；At the same time, capacitance voltage d, q axis output quantity [uc,d,uc,q]TIt is sent into q axis compensator, capacitance voltage q axis is given Measure uc,q *With capacitance voltage q axis output quantity uc,qThe margin of error be sent to the input terminal of q axis controller, pass through flexible modulation q axis and mend The feedback function of device is repaid, then the output quantity of q axis controller and the output quantity of q axis compensator are subtracted each other to get q axis modulating wave letter Number.Although only with capacitance voltage feedback control, be equally applicable to introduce other Variable feedback controls be composed it is more A Variable feedback control, therefore can be collectively referred to as multivariable feedback controller structure.
Fig. 4 gives the block diagram of d axis compensator and q axis compensator in multivariable feedback controller structure.D axis compensator Input terminal is capacitance voltage d, q axis output quantity, successively multiplied by-GN1And GN2, the sum of they are the output end of d axis compensator；Together The input terminal of reason, q axis compensator is capacitance voltage d, q axis output quantity, successively multiplied by GN2And GN1, the sum of they are the compensation of q axis The output end of device.
Under dq rotating coordinate system, PI controller energy DAZ gene DC quantity, so most of selection PI controllers.? On the basis of this, required controller and compensator parameter can be directly obtained from whole system close_loop zero pole arrangement angles Design method.Propose the control parameter design method for being applied to the multivariable feedback controller structure of LC code converter.
The physical quantity in dq axis is indicated with plural form with complex vector modeling method in motor control by Fig. 3, Middle d axis represents real part, and q axis represents imaginary part.Capacitance voltage d, q axis specified rate of LC code converter can be obtained to capacitance voltage d, q The closed loop transfer function, of axis output quantity are as follows:
U in above formulaC,dq *=[uC,d *,uC,q *]TIndicate corresponding d, q axis specified rate of LC code converter capacitance voltage specified rate, GinvFor LC code converter equivalent gain.D axis controller and q axis controller are Gu, and are as follows:
Wherein KpIndicate proportionality coefficient, KiFor integral coefficient, s is complex variable.
Since LC code converter itself damping is weak, while two pairs of coupling amounts are introduced under rotating coordinate system again, thus needs to mention The damping of high LC code converter, and realize that dq axis is full decoupled.When two penalty functions are assumed to be GN1=g0+sg1And GN2= sq1, the damping of LC code converter can be improved and realize the full decoupled control of dq axis.The closed loop of LC code converter can be obtained by arranging Transmission function and characteristic equation are as follows:
WhereinRespectively indicate LC The real and imaginary parts part of code converter closed loop transform function.
If it is expected that configuration system closed loop dominant apices areAnd non-dominant pole is p3=-m ξ ωn, closed-loop zero z1=-h ξ ωn.Wherein ξ indicates the system damping ratio of expectation configuration, ωnIndicate the system angle of expectation configuration Frequency, m then indicate that the multiple that non-dominant pole is with a distance from the imaginary axis and dominant pole is with a distance from the imaginary axis, h indicate closed-loop zero from void Wheelbase is from the multiple with dominant pole with a distance from the imaginary axis.According to state space theory knowledge distribution close_loop zero pole, can must own The expression formula of undetermined parameter, specific as follows:
Practical main circuit parameter and desired configuration parameter according to formula (6) and are successively substituted into, the control of LC code converter can be obtained Device and all parameters of compensator.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include Within protection scope of the present invention.

Claims (5)

1. a kind of LC code converter of multivariable feedback controller characterized by comprising first adder, second adder, Three adders, the 4th adder, d axis controller, q axis controller, d axis compensator and q axis compensator；
The first input end of the first adder is for connecting capacitance voltage d axis specified rate, and the second of the first adder Input terminal is used to connect the capacitance voltage d axis output quantity of LC code converter；By capacitance voltage d axis specified rate in first adder Subtract each other with capacitance voltage d axis output quantity；The input terminal of the d axis controller is connected to the output end of the first adder, institute The first input end for stating third adder is connected to the output end of the d axis controller, the second input of the third adder End is connected to the output end of the d axis compensator, by the output quantity of d axis controller and d axis compensator in third adder Output quantity is added；The input terminal of the d axis compensator is used to connect capacitance voltage d, q axis output quantity of LC code converter；It is described The output end of third adder is for exporting d axis modulated signal；
The first input end of the second adder is for connecting capacitance voltage q axis specified rate, and the second of the second adder Input terminal is used to connect the capacitance voltage q axis output quantity of LC code converter；By capacitance voltage q axis specified rate in second adder Subtract each other with capacitance voltage q axis output quantity；The input terminal of the q axis controller is connected to the output end of the second adder, institute The first input end for stating the 4th adder is connected to the output end of the q axis controller, the second input of the 4th adder End is connected to the output end of the q axis compensator, by the output quantity of q axis controller and q axis compensator in the 4th adder Output quantity is subtracted each other；The input terminal of the q axis compensator is used to connect capacitance voltage d, q axis output quantity of LC code converter；It is described The output end of 4th adder is for exporting q axis modulated signal；
The d axis compensator Gcom,dIt include: feedback function-GN1And feedback function GN2, wherein GN1=g0+sg1、GN2=sq1, g0With g1Indicate corresponding GN1Coefficient, q1Indicate corresponding GN2Coefficient, s is complex variable；
The q axis compensator Gcom,qIt include: feedback function GN2And feedback function GN1, wherein GN1=g0+sg1、GN2=sq1, g0With g1Indicate corresponding GN1Coefficient, q1Indicate corresponding GN2Coefficient, s is complex variable；
The input terminal of d axis compensator is capacitance voltage d, q axis output quantity, and d axis output quantity is multiplied by-GN1, q axis output quantity is multiplied by GN2, The sum of they are the output end of d axis compensator；Similarly, the input terminal of q axis compensator is capacitance voltage d, q axis output quantity, d axis Output quantity is multiplied by GN2, q axis output quantity is multiplied by GN1, the sum of they are the output end of q axis compensator.
2. LC code converter as described in claim 1, which is characterized in that the d axis controller and the q axis controller are PI controller.
3. LC code converter as claimed in claim 2, which is characterized in that the PI controllerWherein, KpTable Show proportionality coefficient, KiFor integral coefficient, s is complex variable.
4. a kind of multivariable feedback controller method based on LC code converter described in claim 1, which is characterized in that including under State step:
Capacitance voltage d, q axis output quantity is sent into d axis compensator, capacitance voltage d axis specified rate uc,d *It is exported with capacitance voltage d axis Measure uc,dThe margin of error be sent to the input terminal of d axis controller, by the feedback function of flexible modulation d axis compensator, then d axis The output quantity of controller is added with the output quantity of d axis compensator to get d axis modulation wave signal；At the same time, capacitance voltage d, q Axis output quantity is sent into q axis compensator, capacitance voltage q axis specified rate uc,q *With capacitance voltage q axis output quantity uc,qThe margin of error be sent into To the input terminal of q axis controller, by the feedback function of flexible modulation q axis compensator, the then output quantity and q of q axis controller The output quantity of axis compensator is subtracted each other to get q axis modulation wave signal.
5. multivariable feedback controller method as claimed in claim 4, which is characterized in that capacitance voltage d, q of LC code converter The closed loop transfer function, and characteristic equation of axis specified rate to capacitance voltage d, q axis output quantity are as follows:
WhereinBy the physical quantity of dq axis It is indicated with plural form, d axis represents real part, and q axis represents imaginary part；If it is expected that configuration system closed loop dominant apices areAnd non-dominant pole is p3=-m ξ ωn, closed-loop zero z1=-h ξ ωn, according to state space Theoretical knowledge configures close_loop zero pole, can obtain all undetermined parameters and obtain expression formula, specifically:g1=L1C[(m+2)ξωn]/Ginv；q1=-2 ω0L1C/Ginv；Wherein, LC code converter is three-phase Inverter, GinvFor LC code converter equivalent gain coefficient, L1For the single inductance value of inverter side of LC code converter, C is triangle The capacitance of three capacitors of type Structure Filter capacitor, ω0For fundamental wave frequency, ξ is the system damping ratio of expectation configuration, ωnFor It is expected that the system angular frequency of configuration, m is the multiple that non-dominant pole is with a distance from the imaginary axis and dominant pole is with a distance from the imaginary axis, and h is to close The multiple that circulation layer point is with a distance from the imaginary axis and dominant pole is with a distance from the imaginary axis, ωrFor the resonance frequency of LC mode filter.
CN201611099464.8A 2016-12-05 2016-12-05 A kind of LC code converter of multivariable feedback controller Active CN106787871B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611099464.8A CN106787871B (en) 2016-12-05 2016-12-05 A kind of LC code converter of multivariable feedback controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611099464.8A CN106787871B (en) 2016-12-05 2016-12-05 A kind of LC code converter of multivariable feedback controller

Publications (2)

Publication Number Publication Date
CN106787871A CN106787871A (en) 2017-05-31
CN106787871B true CN106787871B (en) 2019-02-05

Family

ID=58884625

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611099464.8A Active CN106787871B (en) 2016-12-05 2016-12-05 A kind of LC code converter of multivariable feedback controller

Country Status (1)

Country Link
CN (1) CN106787871B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112217378B (en) * 2020-10-27 2022-04-15 华中科技大学 Three-phase LCL type networking converter compound control system and method based on instruction feedforward

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684643A (en) * 2011-03-09 2012-09-19 上海海尔集成电路有限公司 Loop filter of phase shift keying demodulation circuits and phase shift keying demodulation circuit
CN104242759A (en) * 2014-08-29 2014-12-24 国家电网公司 Double-fed wind power generation system based on vector power system stabilizer
CN104901322A (en) * 2015-05-22 2015-09-09 国家电网公司 Current transformer virtual synchronization control system under asymmetric power grid voltage and method thereof
CN106130077A (en) * 2016-08-17 2016-11-16 西安交通大学 Electric automobile compensation of power network voltage method based on virtual synchronous electromotor algorithm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684643A (en) * 2011-03-09 2012-09-19 上海海尔集成电路有限公司 Loop filter of phase shift keying demodulation circuits and phase shift keying demodulation circuit
CN104242759A (en) * 2014-08-29 2014-12-24 国家电网公司 Double-fed wind power generation system based on vector power system stabilizer
CN104901322A (en) * 2015-05-22 2015-09-09 国家电网公司 Current transformer virtual synchronization control system under asymmetric power grid voltage and method thereof
CN106130077A (en) * 2016-08-17 2016-11-16 西安交通大学 Electric automobile compensation of power network voltage method based on virtual synchronous electromotor algorithm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Load disturbance suppression for voltage-controlled three-phase voltage source inverter with transformer;Yu Qi，et al;《IET Power Electronics》;20141115;第7卷(第12期);第3147-3152页

Also Published As

Publication number Publication date
CN106787871A (en) 2017-05-31

Similar Documents

Publication Publication Date Title
CN109067217B (en) Design method of linear active disturbance rejection controller of three-phase voltage type PWM rectifier
CN105977996B (en) Control System for SVG based on DSP and control method
CN110138184A (en) A kind of self-adaptation control method and control device of three phase power rectifier
Dinh et al. Adaptive notch filter solution under unbalanced and/or distorted point of common coupling voltage for three‐phase four‐wire shunt active power filter with sinusoidal utility current strategy
CN107204630A (en) Have the island NPC type power supply high-accuracy control methods of fast dynamic response concurrently
CN110460035A (en) DC-DC converter dynamic compensation method and system based on robust disturbance observer
CN107069723B (en) Active Power Filter-APF fractional order PIλAnd active disturbance rejection mixing control method
Liu et al. Design and analysis of the compounded control system of hybrid distribution transformer
CN106451573B (en) A kind of the three-phase LCL type networking converter and method of multivariable feedback controller
CN106787871B (en) A kind of LC code converter of multivariable feedback controller
CN108110802A (en) A kind of grid-connected Poewr control method
CN108400596A (en) A kind of fractional harmonic wave detection method in single-phase active power filter system and the active filter control method based on the detection method
Abouelmahjoub et al. Adaptive nonlinear control of reduced‐part three‐phase shunt active power filters
Ma et al. Modeling and Control Strategy Simulation of Dual Active Bridge DC-DC Converter
Hosseinpour et al. Harmonic reduction of current by using phase shifting and shunt-active filter trained by fuzzy particle swarm optimization
CN114296345B (en) Electric energy multiport low-voltage alternating current hybrid H2/HinfOptimization control method
CN107546775B (en) Three-phase grid-connected MMC static model for direct-current voltage control characteristic and establishing method
CN112217378B (en) Three-phase LCL type networking converter compound control system and method based on instruction feedforward
CN105977979A (en) Single-loop control algorithm of single-phase shunt active power filter
Liu et al. Self‐sustained low‐frequency oscillation and its suppression in a practical AC/DC distribution network
Tu et al. Smart transformer modelling and hardware in-the-loop validation
CN110429842B (en) Single-sensor inverter control method combining inductance voltage and capacitance voltage
CN109378847B (en) Micro-grid energy storage PCS control system and method
CN109842120A (en) A kind of microgrid group distributed Voltage imbalance compensation method
CN112332426A (en) Unified power quality regulator system based on MMC technology and control method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant