CN108471263B - The exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load - Google Patents
The exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load Download PDFInfo
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- CN108471263B CN108471263B CN201810269443.9A CN201810269443A CN108471263B CN 108471263 B CN108471263 B CN 108471263B CN 201810269443 A CN201810269443 A CN 201810269443A CN 108471263 B CN108471263 B CN 108471263B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
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Abstract
The invention discloses a kind of exciter control systems of brushless dual-feed motor Independent Power Generation under nonlinear load, including CSC control unit and LSC control unit, CSC control unit, for inhibiting PW voltage 5 times and 7 subharmonic, the first pwm signal is obtained, controls CSC using the first pwm signal；LSC control unit obtains the second pwm signal, controls LSC using the second pwm signal for inhibiting PW electric current 5 times and 7 subharmonic.The present invention does not increase additional filter, inhibit odd harmonics voltage and current caused by nonlinear load by improving brushless dual-feed motor exciter control system, improve brushless dual-feed motor generating voltage quality, to realize brushless dual-feed motor in two quadrant frequency converter, silicon controlled rectifier operates normally under the various nonlinear load operating conditions such as uncontrollable rectifier device.
Description
Technical field
The invention belongs to brushless dual-feed motor control technology fields, more particularly, to brushless under a kind of nonlinear load
The exciter control system of double feedback electric engine Independent Power Generation.
Background technique
Brushless dual-feed motor is a kind of novel AC induction motor, it contain two sets of different stator winding of number of pole-pairs and
One is used to couple the special designing rotor of stator side difference number of pole-pairs rotating excitation field.This two sets of stator winding are according to transmitting energy
Size be referred to as power winding (power winding, hereinafter referred to as PW) and control winding (control winding, below
Abbreviation CW).With it is traditional have brush double fed induction generators compared with, brushless dual-feed motor eliminates brush and slip ring and by it
The features such as high reliability, has significant application advantage in fields such as ship shaft generator, wind-power electricity generation, hydroelectric generations.
Brushless dual-feed motor is chronically at Independent Power Generation state in applications such as ship shaft generators.It needs at this time pair
The output voltage of generator is controlled, and guarantees the amplitude and frequency of the generator output voltage in motor speed and load variation
It is constant.In practical applications, ship power load is in addition to linear load also includes a large amount of nonlinear loads, such as uncontrollable rectifier
Device, silicon controlled rectifier, two quadrant frequency converter etc..The access of nonlinear load can generate non-linear current, lead to brushless double feed
The output voltage of influence generator distorts, the decline of generating voltage quality, so that adverse effect is brought to entire electricity generation system,
Mainly there is the problem of the following aspects:
(1) output voltage is distorted, and includes odd harmonics voltage abundant, and frequency is 6n ± 1 of fundamental frequency
Times；
(2) harmonic voltage to distort can generate additional harmonic loss to other normal loads for being connected to electricity generation system,
Efficiency is reduced, or even will affect equipment and work normally and equipment life is lost；
(3) motor can generate harmonic torque, and vibration and noise increases, and reduce the service life of machine shaft.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides brushless double feeds under a kind of nonlinear load
The exciter control system of motor Independent Power Generation, thus solving nonlinear load causes the appearance of brushless dual-feed motor output voltage abnormal
The technical issues of change, the decline of generating voltage quality.
To achieve the above object, according to one aspect of the present invention, it provides brushless double-fed under a kind of nonlinear load
The exciter control system of machine Independent Power Generation, including CSC control unit and LSC control unit；
The CSC control unit, for 5 subharmonic α beta -axis component of PW voltage and PW voltage 7 under two-phase stationary coordinate system
Subharmonic α beta -axis component is coordinately transformed, and is inhibited PW voltage 5 times and 7 subharmonic, is obtained CW voltage under two-phase stationary coordinate system
α axis component reference valueWith beta -axis component reference valueAccording to the α axis component reference value of CW voltageJoin with beta -axis component
Examine valueThe first pwm signal is obtained, controls CSC using the first pwm signal；
The LSC control unit, for 5 subharmonic dq axis component of load current and 7 subharmonic dq axis of load current point
Amount is coordinately transformed, and is inhibited PW electric current 5 times and 7 subharmonic, is obtained the α axis component of the side LSC voltage under two-phase stationary coordinate system
Reference valueWith beta -axis component reference valueAccording to the α axis component reference value of the side LSC voltageWith beta -axis component reference value
The second pwm signal is obtained, controls LSC using the second pwm signal.
Further, CSC control unit includes PW voltage fundamental control module, PW voltage harmonic control module, the side CSC electricity
Conversion module, the side CSC current control module and the side CSC voltage transformation module are flowed,
The PW voltage fundamental control module is used for PW voltage fundamental α axis component u under two-phase stationary coordinate systempα1fAnd β
Axis component upβ1fIt converts to the PW voltage fundamental d axis component under dq coordinate systemWith q axis componentAccording toWith?
CW current first harmonics q axis component reference value under to dq coordinate systemWith d axis component reference value
The PW voltage harmonic control module is used for 5 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα5f
With beta -axis component upβ5fIt converts to dq55 subharmonic d axis component of PW voltage under coordinate systemWith q axis componentAccording to
WithObtain dq55 subharmonic q axis component reference value of CW electric current under coordinate systemWith d axis component reference valueIt utilizes
WithIt is coordinately transformed, obtains 5 subharmonic d axis component reference value of CW electric current in dq coordinate systemWith q axis component reference valueBy 7 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα7fWith beta -axis component upβ7fIt converts to dq7Under coordinate system
7 subharmonic d axis component of PW voltageWith q axis componentIt is right respectivelyWithIt is adjusted to obtain dq7Under coordinate system
7 subharmonic q axis component reference value of CW electric currentWith d axis component reference valueIt utilizesWithIt is coordinately transformed, obtains
The 7 subharmonic d axis component reference value of CW electric current into dq coordinate systemWith q axis component reference valueThen willWithPhase
Add to obtain in dq coordinate system CW electric current 5 times and 7 subharmonic d axis component reference valuesIt willWithAddition obtains dq coordinate
CW electric current 5 times and 7 subharmonic q axis component reference values in system
The side the CSC current transformation module, for by a phase current i of CW under abc coordinate systemca, b phase current icbWith c phase
Electric current iccIt is transformed to the d axis component of CW electric current under dq coordinate systemWith q axis component
The side CSC current control module, for according to CW current first harmonics d axis component reference valueCW electric current 5 times and 7
Subharmonic d axis component reference valueWith CW electric current d axis componentObtain CW voltage d axis component reference valueAccording to CW electricity
Flow fundamental wave q axis component reference valueCW electric current 5 times and 7 subharmonic q axis component reference valuesWith CW electric current q axis component
Obtain CW voltage q axis component reference value
The side the CSC voltage transformation module, for by the d axis component reference value of CW voltage under dq coordinate systemWith q axis point
Measure reference valueIt is transformed to the α axis component reference value of CW voltage under two-phase stationary coordinate systemWith beta -axis component reference value
Further, CSC control unit further includes PW voltage subtraction module and the first SVPWM generator,
The PW voltage subtraction module, for according to PW three-phase voltage upa, upb, upcObtain PW voltage fundamental α axis component
upα1fWith beta -axis component upβ1f, 5 subharmonic α axis component u of PW voltagepα5fWith beta -axis component upβ5f, 7 subharmonic α axis component of PW voltage
upα7fWith beta -axis component upβ7f；
The first SVPWM generator, for the α axis component reference value according to CW voltageWith beta -axis component reference valueGenerate the first pwm signal.
Further, the side CSC current control module includes the tenth adder, the 11st adder, the 12nd adder, the
13 adders, the first PIR controller and the second PIR controller；
Tenth adder, for CW current first harmonics d axis component reference valueCW electric current 5 times and 7 subharmonic d axis
Component reference valueIt carries outOperation, obtains CW electric current d axis component reference value11st adder,
For to CW electric current d axis component reference valueWith CW electric current d axis componentIt carries outOperation；The first PIR control
Device, for utilizing PIR controller principle pairOperation is carried out, CW voltage d axis component reference value is obtainedDescribed tenth
Two adders, for CW current first harmonics q axis component reference valueCW electric current 5 times and 7 subharmonic q axis component reference values
It carries outOperation, obtains CW electric current q axis component reference value13rd adder, for CW electric current q axis
Component reference valueWith CW electric current q axis componentIt carries outOperation；Second PIR controller, for utilizing PIR
Controller principle pairOperation is carried out, CW voltage q axis component reference value is obtained
Further, LSC control unit includes DC bus-bar voltage control module, the side LSC current control module, the side LSC
Current transformation module and the side LSC voltage transformation module,
The DC bus-bar voltage control module, for according to DC bus-bar voltage reference valueAnd DC bus-bar voltage
Udc, obtain the side LSC current first harmonics d axis component reference value
The side LSC current control module, for according to the side LSC fundamental current d axis component reference valueIn dq coordinate system
5 subharmonic d axis component reference value i of load currentload_d5, 7 subharmonic d axis component reference value i of load currentload_d7With the side LSC electricity
Flow d axis component ild, obtain the side LSC voltage d axis component reference valueAccording to 5 subharmonic q axis of load current in dq coordinate system point
Measure reference value iload_q5, 7 subharmonic q axis component reference value i of load currentload_q7With the side LSC electric current q axis component ilq, obtain LSC
Side voltage q axis component reference value
The side the LSC current transformation module, for by a phase current i of the side LSC electric current under abc coordinate systemla, b phase current
ilbWith c phase current ilcIt is transformed to the d axis component i of the side LSC electric current under dq coordinate systemldWith q axis component ilq；
The side the LSC voltage transformation module, for by the d axis component reference value of the side LSC voltage under dq coordinate systemAnd q
Axis component reference valueIt is transformed to the α axis component reference value of the side LSC voltage under two-phase stationary coordinate systemIt is referred to beta -axis component
Value
Further, it further includes load current extraction module and the 2nd SVPWM generator that LSC control list is towering；
The load current extraction module is used for from load three-phase current iload_a, iload_b, iload_cExtract dq coordinate system
Middle 5 subharmonic d axis component i of load currentload_d5, q axis component iload_q5With 7 subharmonic d axis component of load current in dq coordinate system
iload_d7, q axis component iload_q7；
The 2nd SVPWM generator, the α axis component for exporting the side LSC voltage according to the side LSC voltage transformation module are joined
Examine valueWith beta -axis component reference valueGenerate the second pwm signal.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) present invention provides a kind of exciter control system of brushless dual-feed motor Independent Power Generation under nonlinear load, purpose
It is not increase additional filter, is inhibited caused by nonlinear load by improving brushless dual-feed motor exciter control system
Odd harmonics voltage and current improves brushless dual-feed motor generating voltage quality, to realize brushless dual-feed motor in two quadrant
Frequency converter, silicon controlled rectifier operate normally under the various nonlinear load operating conditions such as uncontrollable rectifier device.
(2) present invention utilizes CSC control unit, inhibits PW voltage 5 times and 7 subharmonic are used for using LSC control unit
Inhibit PW electric current 5 times and 7 subharmonic, so that the output voltage of brushless dual-feed motor is normal, generating voltage Quality advance, from
And improve equipment life.
Detailed description of the invention
Fig. 1 is the excitation con-trol of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load provided in an embodiment of the present invention
The structural schematic diagram of system；
Fig. 2 is the structural schematic diagram of PW voltage fundamental control module provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of PW voltage harmonic control module provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the side CSC provided in an embodiment of the present invention current control module；
Fig. 5 is the structural schematic diagram of PW voltage subtraction module provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the side LSC provided in an embodiment of the present invention current control module；
Fig. 7 is the structural schematic diagram of load current extraction module provided in an embodiment of the present invention.
Specific embodiment
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.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Concept related in the present invention is explained below:
Abc coordinate system: the static winding of the three-phase symmetrical corresponding to alternating current generator has a axis, the b axis for intersecting at origin
With three reference axis of c-axis, these three reference axis are static in space and 120 degree of mutual deviation symmetrical, in the direction of the clock, are followed successively by
A axis, b axis and c-axis；
Two-phase stationary coordinate system: the orthogonal static winding of the two-phase virtual corresponding to alternating current generator has and intersects at origin
Two reference axis of α axis and β axis, the two reference axis are static in space and 90 degree of mutual deviation, counterclockwise, are followed successively by α axis
With β axis；
Dq mark system: having two reference axis of d axis and q axis for intersecting at origin, and 90 degree of the two reference axis mutual deviations (press the inverse time
Needle direction is followed successively by d axis and q axis), with angular velocity omegapRotation counterclockwise；Wherein ωpFor the rotation angle speed of PW voltage fundamental component
Degree；
dq5Coordinate system: having two reference axis of d axis and q axis for intersecting at origin, and 90 degree of the two reference axis mutual deviations (are pressed
Counterclockwise, d axis and q axis are followed successively by), with 5 ω of angular speedpIt rotates clockwise；
dq7Coordinate system: having two reference axis of d axis and q axis for intersecting at origin, and 90 degree of the two reference axis mutual deviations (are pressed
Counterclockwise, d axis and q axis are followed successively by), with 7 ω of angular speedpRotation counterclockwise；
In the present invention, α axis and a overlapping of axles；
Fundametal compoment: fundametal compoment refers generally to component frequencies component identical with rated frequency；
Harmonic component: harmonic component refers generally to the component that component frequencies are rated frequency integral multiple；
PI controller: for Common Concepts in motor control, the form of PI controller is in the present inventionWherein,
Kp is proportional gain, and ki is integral gain, and s is Laplace operator, it is between the given value and value of feedback of control target
Deviation carries out scale operation given by PI controller and integral operation respectively, then by the result of scale operation and integral operation
It is added and constitutes control amount, controlled device is controlled.The adjustment method of kp and ki are as follows:
Ki is first set as 0, is then gradually increased kp until overshoot occurs in control target, kp no longer changes, then again
It is gradually increased ki, until the regulating time until controlling target reaches the demand of user.
PIR controller: the present invention in the first PI controller, the 2nd PI controller form beWherein, kp is proportional gain, and ki is integral gain, and kr is resonance gain, ωcTo cut
Only frequency (generally taking 5-20rad/s), ωnIt (is generally set according to the frequency of harmonic signal) for resonance frequency, s is Laplce
Operator, it carries out scale operation given by PIR controller to the deviation between the given value and value of feedback of control target respectively,
Integral operation and resonance operation, then by scale operation, the results added composition control amount of integral operation and resonance operation is right
Controlled device is controlled.The adjustment method of kp, ki and kr are as follows:
1. setting 0 for kr first, kp is debugged according to the adjustment method of PI controller, ki parameter: ki is first set as 0, so
After be gradually increased kp until control target there is overshoot until, kp no longer changes, be then gradually increased ki again, until control target
Regulating time reach user demand until.
2. guaranteeing kp, resonance regulation signal is added in ki parameter constant, is changed kr parameter: ki being first set as 0, then gradually
Increase kr until resonance signal tracking effect reaches the demand of user.
Bandpass filter: the form of the first bandpass filter, the second bandpass filter, third bandpass filter in the present invention
It isWherein, k is that (0 < damped coefficient k < 2, k value is bigger, and response is faster, but filters for damped coefficient
Effect is poorer, generally takes), ωnIt (is generally set according to the frequency of filtering signal) for center frequency, s is Laplce's calculation
Son, it to input signal according toTransmission function carries out operation.
SVPWM generator: the first SVPWM generator and the 2nd SVPWM generator belong to this column in the present invention.With three-phase
Three-phase symmetrical motor stator sub-ideal magnetic linkage circle is reference standard when symmetrical sine wave voltage is powered, and is opened with three-phase inverter difference
Pass mode makees switching appropriate, to form PWM wave, tracks its accurate magnetic linkage circle to be formed by practical flux linkage vector.
As shown in Figure 1, under a kind of nonlinear load brushless dual-feed motor Independent Power Generation exciter control system, including CSC
(control winding side converter, control winding side converter) control unit and LSC (load side
Converter, load-side inverter) control unit, CSC control unit is for inhibiting PW voltage 5 times and 7 subharmonic, LSC control
Unit is for inhibiting PW electric current 5 times and 7 subharmonic.CSC control unit includes PW voltage fundamental control module, PW voltage harmonic control
Molding block, the side CSC current transformation module, the side CSC current control module, the side CSC voltage transformation module, PW voltage subtraction module and
First SVPWM generator；LSC control unit includes DC bus-bar voltage control module, the side LSC current control module, the side LSC electricity
Flow conversion module, the side LSC voltage transformation module, load current extraction module and the 2nd SVPWM generator.
The PW voltage fundamental control module is used for PW voltage fundamental α axis component u under two-phase stationary coordinate systempα1fAnd β
Axis component upβ1fIt converts to the PW voltage fundamental d axis component under dq coordinate systemWith q axis componentIt is right respectivelyWith
It is adjusted to obtain the CW current first harmonics q axis component reference value under dq coordinate systemWith d axis component reference valueIt willWithIt send to the side CSC current controller；
The PW voltage harmonic control module is used for 5 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα5f
With beta -axis component upβ5fIt converts to dq55 subharmonic d axis component of PW voltage under coordinate systemWith q axis componentIt is right respectivelyWithIt is adjusted to obtain dq55 subharmonic q axis component reference value of CW electric current under coordinate systemIt is referred to d axis component
ValueIt utilizesWithIt is coordinately transformed, obtains 5 subharmonic d axis component reference value of CW electric current in dq coordinate systemWith
Q axis component reference valueBy 7 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα7fWith beta -axis component upβ7fConversion
To dq77 subharmonic d axis component of PW voltage under coordinate systemWith q axis componentIt is right respectivelyWithIt is adjusted
To dq77 subharmonic q axis component reference value of CW electric current under coordinate systemWith d axis component reference valueIt utilizesWith
It is coordinately transformed, obtains 7 subharmonic d axis component reference value of CW electric current in dq coordinate systemWith q axis component reference value
Then willWithAddition obtains in dq coordinate system CW electric current 5 times and 7 subharmonic d axis component reference valuesIt willWithAddition obtains in dq coordinate system CW electric current 5 times and 7 subharmonic q axis component reference valuesIt willWithIt send to institute
The side the CSC current control module stated；
The CW current first harmonics d axis component that the side CSC current control module first exports PW voltage fundamental control module
Reference valueThe CW electric current 5 times and 7 subharmonic d axis component reference values of PW voltage harmonic control module outputWith CW electricity
Flow d axis componentIt is added, by operation resultIt is sent into the first PIR controller；PW voltage fundamental control module
The CW current first harmonics q axis component reference value of outputThe CW electric current 5 times and 7 subharmonic q of PW voltage harmonic control module output
Axis component reference valueWith CW electric current q axis componentIt is added, by operation resultIt is sent into the 2nd PIR control
Device；The CW voltage d axis component reference value that finally the first PIR controller is exportedWith the CW voltage of the second PIR controller output
Q axis component reference valueIt is sent into the side the CSC voltage transformation module；
The side the CSC current transformation module is by a phase current i of CW under abc coordinate systemca, b phase current icbWith c phase current icc
It is transformed to the d axis component of CW electric current under dq coordinate systemWith q axis componentIt willWithIt send to the side the CSC current control mould
Block；
Transformation refers to angle, θc=(pp+pc)θ1-θp, wherein for ppAnd pcThe number of pole-pairs of respectively PW and CW, θrFor rotor machine
Tool position, θpFor the PW voltage fundamental component phase of PW voltage subtraction module output；
D axis component reference value of the side the CSC voltage transformation module to CW voltage under dq coordinate systemJoin with q axis component
Examine valueIt is transformed to the α axis component reference value of CW voltage under two-phase stationary coordinate systemWith beta -axis component reference valueIt willWithIt send to the first SVPWM generator；
Transformation refers to angle, θc=(pp+pc)θr-θp, wherein for ppAnd pcThe number of pole-pairs of respectively PW and CW, θrFor rotor machine
Tool position, θpFor the PW voltage fundamental component phase of PW voltage subtraction module output；
The PW voltage subtraction module is from PW three-phase voltage upa, upb, upcIt extracts and filters out PW voltage fundamental α axis component
upα1f, beta -axis component upβ1f, 5 subharmonic α axis component u of PW voltagepα5f, beta -axis component upβ5f, 7 subharmonic α axis component u of PW voltagepα7f,
Beta -axis component upβ7f；The PW voltage subtraction module also finds out the angular velocity of rotation ω of PW voltage fundamental component simultaneouslyp, PW voltage base
The true phase θ of wave componentp, by θpSend the side LSC voltage transformation module into above-mentioned LSC control unit, the side LSC current transformation
Module, PW current harmonics control module and PW current draw module；PW voltage harmonic control module in CSC control unit, CSC
Side voltage transformation module and the side CSC current transformation module；
The first SVPWM generator exports the α axis component reference value of CW voltage according to the side CSC voltage transformation module
With beta -axis component reference valueThe first pwm signal is generated to send to CSC；
The DC bus-bar voltage control module includes first adder and the first PI controller；DC bus-bar voltage is joined
Examine valueWith DC bus-bar voltage UdcIt is sent into first adder, is carried outOperation, operation result are sent into the first PI
Controller, the first PI controller is according to the PI controller principle to input resultsOperation is carried out, the first PI is controlled
The side LSC current first harmonics d axis component reference value in the dq coordinate system of device output processedIt send to the side the LSC current control module；
LSC side group wave in the dq coordinate system that the side LSC current control module exports DC bus-bar voltage control module
Electric current d axis component reference value5 subharmonic d axis component of load current ginseng in the dq coordinate system of load current extraction module output
Examine value iload_d5, 7 subharmonic d axis component reference value i of load currentload_d7With the side LSC electric current d axis component ildIt is added, by operation
As a resultIt is sent into third PIR controller；The dq coordinate system that load current extraction module is exported
Middle 5 subharmonic q axis component reference value i of load currentload_q5, 7 subharmonic q axis component reference value i of load currentload_q7With the side LSC
Electric current q axis component ilqIt is added, by operation resultIt is sent into the 4th PIR controller；Finally by
The side the LSC voltage d axis component reference value of three PIR controllers outputWith the side the LSC voltage q axis point of the 4th PIR controller output
Measure reference valueIt is sent into the side the LSC voltage transformation module；
The side the LSC current transformation module is by a phase current i of the side LSC electric current under abc coordinate systemla, b phase current ilbAnd c
Phase current ilcIt is transformed to the d axis component i of the side LSC electric current under dq coordinate systemldWith q axis component ilq, by ildAnd ilqIt send to the LSC
Side current control module；
Wherein transformation refers to angle, θpFor the PW voltage fundamental component phase of PW voltage subtraction module output；
D axis component reference value of the side the LSC voltage transformation module to the side LSC voltage under dq coordinate systemWith q axis component
Reference valueIt is transformed to the α axis component reference value of the side LSC voltage under two-phase stationary coordinate systemWith beta -axis component reference value
It willWithIt send to the 2nd SVPWM generator；
Wherein transformation refers to angle, θpFor the PW voltage fundamental component phase of PW voltage subtraction module output；
The load current extraction module from load three-phase current iload_a, iload_b, iload_cIt extracts in dq coordinate system and bears
Carry 5 subharmonic d axis component i of electric currentload_d5, q axis component iload_q5With 7 subharmonic d axis component of load current in dq coordinate system
iload_d7, q axis component iload_q7；
The 2nd SVPWM generator exports the α axis component reference value of the side LSC voltage according to the side LSC voltage transformation moduleWith beta -axis component reference valueThe second pwm signal is generated to send to LSC.
As shown in Fig. 2, PW voltage fundamental control module include the first Park converter (i.e. Park converter 1 in Fig. 2),
First multiplier, second adder, third adder, the 2nd PI controller and the 3rd PI controller.
PW voltage fundamental control module is first by PW voltage fundamental α axis component u under two-phase stationary coordinate systempα1fWith β axis point
Measure upβ1fIt is sent into the first Park converter, by Park operation by upα1fAnd upβ1fIt converts to the PW voltage fundamental d under dq coordinate system
Axis componentWith q axis component
Wherein transformation refers to angleFor PW voltage-phase reference value；It willWith PW voltage fundamental amplitude reference value
It is sent into second adder, is carried outOperation, operation result are sent to the 2nd PI controller, the 2nd PI controller according to
The PI controller principle is to inputOperation is carried out, the CW current first harmonics q axis component reference under dq coordinate system is obtained
ValueIt willIt is sent into third adder with reference value 0, is carried outOperation, operation result send to the 3rd PI and control
Device；3rd PI controller is according to the PI controller principle to inputOperation is carried out, by the result of the 3rd PI controller
The first multiplier for being -1 to the multiplication coefficient is sent, multiplication operation is carried out, obtains the CW current first harmonics d axis under dq coordinate system
Component reference valueFinally willWithIt send to the side the CSC current controller.
As shown in figure 3, PW voltage harmonic control module includes the 2nd Park converter (the Park converter in as Fig. 3
2), the 3rd Park converter (the Park converter 3 in as Fig. 3), the second multiplier, third multiplier, the 4th multiplier,
Five multipliers, the 4th adder, fifth adder, the 6th adder, the 7th adder, the 8th adder, the 9th adder,
Three PI controllers, the 4th PI controller, the 5th PI controller, the 6th PI controller, the 7th PI controller, the first coordinate converter
(coordinate converter 1 in as Fig. 3) and the second coordinate converter (coordinate converter 2 in as Fig. 3).
By PW voltage fundamental phase thetapThe second multiplier for being -5 to proportionality coefficient is sent, and by -5 θ of its operation resultpIt is sent into
Park converter 2；By θpThe third multiplier for being 7 to proportionality coefficient is sent, and by 7 θ of its operation resultpIt is sent into the 3rd Park transformation
Device.
By 5 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα5fWith beta -axis component upβ5fIt is sent into the 2nd Park change
Parallel operation, by Park operation by upα5fAnd upβ5fIt converts to dq55 subharmonic d axis component of PW voltage under coordinate systemWith q axis
Component
It willIt is sent into the 4th adder with reference value 0, is carried outOperation, operation result, which is sent to the 4th PI, to be controlled
Device processed, the 4th PI controller is according to the PI controller principle to inputOperation is carried out, by the knot of the 4th PI controller
The 4th multiplier that it is -1 to the multiplication coefficient that fruit, which is sent, carries out multiplication and operates to obtain dq5CW electric current 5 times under coordinate system are humorous
Wave q axis component reference valueIt willIt is sent into fifth adder with reference value 0, is carried outOperation, operation result are sent
To the 5th PI controller；5th PI controller is according to the PI controller principle to inputOperation is carried out, dq is obtained5
5 subharmonic d axis component reference value of CW electric current under coordinate systemThen willWithIt send to first coordinate transform
Device.
First coordinate converter willWithBe converted to 5 subharmonic reference value d axis of CW electric current in dq coordinate system
ComponentWith q axis component reference valueAnd it willWithIt is respectively fed to the 8th adder and the 9th adder；
By 7 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα7fWith beta -axis component upβ7fIt is sent into Park converter
3, by Park operation by upα7fAnd upβ7fIt converts to dq77 subharmonic d axis component of PW voltage under coordinate systemWith q axis component
It willIt is sent into the 6th adder with reference value 0, is carried outOperation, operation result, which is sent to the 6th PI, to be controlled
Device processed, the 6th PI controller is according to the PI controller principle to inputOperation is carried out, dq is obtained7Under coordinate system
7 subharmonic q axis component reference value of CW electric currentIt willIt is sent into the 7th adder with reference value 0, is carried outOperation,
Its operation result is sent to the 7th PI controller；7th PI controller is according to the PI controller principle to inputIt carries out
The result of 7th PI controller is sent the 5th multiplier for being -1 to the multiplication coefficient by operation, is carried out multiplication and is operated to obtain
dq77 subharmonic d axis component reference value of CW electric current under coordinate systemThen willWithIt send to the second coordinate change
Parallel operation.
Second coordinate converter willWithBe converted to 7 subharmonic reference value d axis component of CW electric current in dq coordinate system
With q axis component reference valueAnd it willWithIt is respectively fed to the 8th adder and the 9th adder；
It willWithIt is sent into the 8th adder, is carried outOperation, obtains in dq coordinate system CW electric current 5 times and 7
Subharmonic d axis component reference valueIt willWithIt is sent into the 9th adder, is carried outOperation, obtains dq coordinate
CW electric current 5 times and 7 subharmonic q axis component reference values in systemFinally willWithIt is sent into the side CSC current control mould
Block.
As shown in figure 4, the side CSC current control module include the tenth adder, the 11st adder, the 12nd adder,
13rd adder, the first PIR controller and the second PIR controller；The CW electric current base that PW voltage fundamental control module is exported
Wave d axis component reference valueThe CW electric current 5 times and 7 subharmonic d axis component reference values of PW electricity harmonic controller outputIt is defeated
Enter to the tenth adder, carries outOperation, the CW electric current d axis component reference value of outputWith CW electric current d axis point
AmountIt is sent into the 11st adder, is carried outOperation, its operation result is sent to first PIR controller, the
One PIR controller is according to the PIR controller principle to inputOperation is carried out, the CW that the first PIR controller is exported
Voltage d axis component reference valueIt send to the side the CSC voltage transformation module；By CW current first harmonics q axis component reference value
CW electric current 5 times and 7 subharmonic q axis component reference valuesIt is input to the 12nd adder, is carried outOperation, it is defeated
CW electric current q axis component reference value outWith CW electric current q axis componentIt is sent into the 13rd adder, is carried outOperation,
Its operation result is sent to second PIR controller, the second PIR controller is according to the PIR controller principle to inputOperation is carried out, the CW voltage q axis component reference value that the second PIR controller is exportedIt send to the side the CSC electricity
Press conversion module.
As shown in figure 5, PW voltage subtraction module includes the first Clark converter (the Clark converter 1 in as Fig. 5),
First harmonic decoupler (the harmonic wave decoupler 1 in as Fig. 5), the first bandpass filter, the second bandpass filter, third band logical
Filter, the 4th bandpass filter, the 5th bandpass filter, the 6th bandpass filter and phaselocked loop；
First Clark converter is by a phase voltage u of PW under abc coordinate systempa, b phase voltage upbWith c phase voltage upcIt is transformed to
The α axis component u of PW voltage under two-phase stationary coordinate systempαWith beta -axis component upβ, send to first harmonic decoupler；
First harmonic decoupler can eliminate the influence between each harmonic component, guarantee the filter effect of bandpass filter
Fruit.For fundametal compoment, by the input results u of the first Clark converterpα, the output u of the 5th bandpass filterpα7fIt send to
14 adders carry out upα-upα7fOperation, by the output u of its operation result and third bandpass filterpα5fIt send to the 15th
Adder carries out upα-upα7f-upα5fOperation, by operation result upα1It send to the first bandpass filter；By the first Clark converter
Input results upβ, the output u of the 6th bandpass filterpβ7fIt send to the 16th adder, carries out upβ-upβ7fOperation, is transported
Calculate the output u of result and the 4th bandpass filterpβ5fIt send to the 17th adder, carries out upβ-upα7f-upα5fOperation, by operation
As a result upβ1It send to the second bandpass filter；
For 5 order harmonic components, by the input results u of the first Clark converterpα, the output of the 5th bandpass filter
upα7fIt send to the 18th adder, carries out upα-upα7fOperation, by the output u of its operation result and the first bandpass filterpα1fIt send
To the 19th adder, u is carried outpα-upα7f-upα1fOperation, by operation result upα5It send to third bandpass filter；By first
The input results u of Clark converterpβ, the output u of the 6th bandpass filterpβ7fIt send to the 20th adder, carries out upβ-upβ7f
Operation, by the output u of its operation result and the second bandpass filterpβ1fIt send to the 21st adder, carries out upβ-upα7f-upα1f
Operation, by operation result upβ5It send to the 4th bandpass filter；
For 7 order harmonic components, by the input results u of the first Clark converterpα, the output of third bandpass filter
upα5fIt send to the 22nd adder, carries out upα-upα5fOperation, by the output u of its operation result and the first bandpass filterpα1f
It send to the 23rd adder, carries out upα-upα5f-upα1fOperation, by operation result upα7It send to the 5th bandpass filter；By
The input results u of one Clark converterpβ, the output u of the 4th bandpass filterpβ5fIt send to the 24th adder, carries out upβ-
upβ5fOperation, by the output u of its operation result and the second bandpass filterpβ1fIt send to the 25th adder, carries out upβ-
upα5f-upα1fOperation, by operation result upβ7It send to the 6th bandpass filter.
First bandpass filter filters out upα1Middle each harmonic obtains the α axis fundametal compoment u of PW voltagepα1f, by upα1fSend to
Phase-locked loop module；The centre frequency of first bandpass filter is ω=ωp, the damped coefficient of the first bandpass filter are as follows:Second bandpass filter filters out upβ1Middle each harmonic obtains the β axis fundametal compoment u of PW voltagepβ1f, by upβ1fSend to
Phase-locked loop module；The centre frequency of second bandpass filter is ω=ωp, the damped coefficient of the second bandpass filter are as follows:
Third bandpass filter filters out upα5In non-5 subharmonic voltage obtain 5 subharmonic α axis component u of PW voltagepα5f, will
upα5fIt send to Park converter 2；The centre frequency of third bandpass filter is the ω of ω=5p, the damping system of third bandpass filter
Number are as follows:4th bandpass filter filters out upβ5In non-5 subharmonic voltage obtain 5 subharmonic beta -axis component of PW voltage
upβ5f, by upβ5fIt send to Park converter 2；The centre frequency of 4th bandpass filter is the ω of ω=5p, the second bandpass filter
Damped coefficient are as follows:
5th bandpass filter filters out upα7In non-7 subharmonic voltage obtain 7 subharmonic α axis component u of PW voltagepα7f, will
upα7fIt send to Park converter 3；The centre frequency of 5th bandpass filter is the ω of ω=7p, the damping system of the 5th bandpass filter
Number are as follows:6th bandpass filter filters out upβ7In non-7 subharmonic voltage obtain 7 subharmonic beta -axis component of PW voltage
upβ7f, by upβ7fIt send to Park converter 3；The centre frequency of 6th bandpass filter is the ω of ω=7p, the 6th bandpass filter
Damped coefficient are as follows:
The phaselocked loop includes the 4th Park converter (the Park converter 4 in as Fig. 5), the 8th PI controller, the
26 adders and first integrator；
4th Park converter is by PW voltage fundamental α axis component upα1fWith PW voltage fundamental beta -axis component upα1fIt is transformed to dq seat
PW voltage fundamental d axis component under mark systemWith q axis component
Wherein θpFor the output result of first integrator；
By the output result PW voltage fundamental q axis component of the 4th Park converterIt send to the 8th PI controller；8th PI
Controller passes through adjustingFor 0 to obtain frequency increment Δ ωpIt send to the 26th adder；26th adder meter
Calculate the estimation frequencies omega of PW voltage positive sequence fundametal compomentp=Δ ωp+ωP, nom, wherein ωP, nomFor the rated frequency of PW voltage；The
One integrator is to ωpIntegral obtains the phase estimation value θ of PW voltage positive sequence fundametal compomentp, by θpIt send to above-mentioned LSC control unit
In the side LSC voltage transformation module, the side LSC current transformation module, PW current harmonics control module, the PW in CSC control unit
Voltage harmonic control module.
PW voltage positive sequence fundametal compoment estimates frequencies omegapAs the first bandpass filter, the second bandpass filter, third band
The centre frequency of bandpass filter, the 4th bandpass filter, the 5th bandpass filter and the 6th bandpass filter inputs foundation.
As shown in fig. 6, the side LSC current controller control module includes the 27th adder, the 28th adder, the
29 adders, the 30th adder, the 31st adder, the 32nd adder, third PIR controller and the 4th
PIR controller；The side the LSC current first harmonics d axis component reference value that DC bus-bar voltage control module is exportedLoad current
The 5 subharmonic d axis component i of load current of extraction module outputload_d5To the 27th adder, carry outBehaviour
Make, the 7 subharmonic d axis component i of load current that its operation result and load current extraction module are exportedload_d7Input the 20th
Eight adders carry outOperation, the side LSC that operation result and the side LSC current transformation module are exported
Electric current d axis component ildIt send to the 29th adder, carries outOperation, operation result is sent
Enter the third PIR controller, third PIR controller is according to the PIR controller principle to inputCarry out operation, the side the LSC voltage d axis component reference value that third PIR controller is exportedIt send to the side the LSC voltage transformation module；By the side LSC current first harmonics q axis component reference value 0, load current extraction module
The 5 subharmonic q axis component i of load current of outputload_q5To the 30th adder, 0+i is carried outload_q5Operation, by its operation result
With the 7 subharmonic q axis component i of load current of load current extraction module outputload_q7The 31st adder is inputted, 0+ is carried out
iload_q5+iload_q7Operation, the side the LSC electric current q axis component i that operation result and the side LSC current transformation module are exportedlqIt send to
32 adders carry out 0+iload_q5+iload_q7-ilqOperation result is sent into the 4th PIR controller by operation, the
Four PIR controllers are according to the PIR controller principle to input 0+iload_q5+iload_q7-ilqOperation is carried out, the 4th PIR is controlled
The side the LSC voltage q axis component reference value of device output processedIt send to the side the LSC voltage transformation module.
As shown in fig. 7, load current extraction module includes the 2nd Clark converter (the Clark converter in as Fig. 7
2), second harmonic decoupler (the harmonic wave decoupler 2 in as Fig. 7), the 7th bandpass filter, the 8th bandpass filter, the 9th
Bandpass filter, the tenth bandpass filter, the 11st bandpass filter, the tenth two band-pass filter, the 5th Park converter is (i.e.
For the Park converter 5 in Fig. 7), the 6th Park converter (the Park converter 6 in as Fig. 7)；
2nd Clark converter is by a phase current i of load current under abc coordinate systemload_a, b phase current iload_bWith c phase
Electric current iload_cThe load current α axis component i being transformed under two-phase stationary coordinate systemload_αWith beta -axis component iload_β, send to described
Second harmonic decoupler；
Second harmonic decoupler can eliminate the influence between each harmonic component, guarantee the filter effect of bandpass filter
Fruit.For fundametal compoment, by the output result i of the 2nd Clark converterload_α, the output i of the 11st bandpass filterload_α7f
It send to the 33rd adder, carries out iload_α-iload_α7fOperation, by the output of its operation result and the 9th bandpass filter
iload_α5fIt send to the 34th adder, carries out iload_α-iload_α7f-iload_α5fOperation, by operation result iload_α1It send to
Seven bandpass filters；By the output result i of the 2nd Clark converterload_β, the output i of the tenth two band-pass filterload_β7fIt send
To the 35th adder, i is carried outload_β-iload_β7fOperation, by the output of its operation result and the tenth bandpass filter
iload_β5fIt send to the 36th adder, carries out iload_β-iload_β7f-iload_β5fOperation, by operation result iload_β1It send to
Eight bandpass filters；
For 5 order harmonic components, by the output result i of the 2nd Clark converterload_α, the 11st bandpass filter it is defeated
I outload_α7fIt send to the 37th adder, carries out iload_α-iload_α7fOperation, by its operation result and the 7th bandpass filter
Output iload_α1fIt send to the 38th adder, carries out iload_α-iload_α7f-iload_α1fOperation, by operation result iload_α5
It send to the 9th bandpass filter；By the output result i of the 2nd Clark converterload_β, the output of the tenth two band-pass filter
iload_β7fIt send to the 39th adder, carries out iload_β-iload_β7fOperation, by its operation result and the 8th bandpass filter
Export iload_β1fIt send to the 40th adder, carries out iload_β-iload_β7f-iload_β1fOperation, by operation result iload_β5Send to
Tenth bandpass filter；
For 7 order harmonic components, by the output result i of the 2nd Clark converterload_α, the output of the 9th bandpass filter
iload_α5fIt send to the 41st adder, carries out iload_α-iload_α5fOperation, by its operation result and the 7th bandpass filter
Export iload_α1fIt send to the 42nd adder, carries out iload_α-iload_α5f-iload_α1fOperation, by operation result iload_α7It send
To the 11st bandpass filter；By the output result i of the 2nd Clark converterload_β, the output of the tenth bandpass filter
iload_β5fIt send to the 43rd adder, carries out iload_β-iload_β5fOperation, by its operation result and the 8th bandpass filter
Export iload_β1fIt send to the 44th adder, carries out iload_β-iload_β5f-iload_β1fOperation, by operation result iload_β7It send
To the tenth two band-pass filter；
7th bandpass filter filters out iload_αMiddle each harmonic obtains load current fundamental wave α axis component iload_α1f；7th band
The centre frequency of bandpass filter is ω=ωp, the damped coefficient of the 7th bandpass filter are as follows:8th bandpass filter
Filter out iload_βMiddle each harmonic obtains load current fundamental wave beta -axis component iload_β1f；The centre frequency of second bandpass filter is ω
=ωp, the damped coefficient of the second bandpass filter are as follows:
9th bandpass filter filters out iload_αIn non-5 subharmonic current obtain 5 subharmonic current α axis component of load current
iload_α5f；The centre frequency of 9th bandpass filter is the ω of ω=5p, the damped coefficient of the 9th bandpass filter are as follows:Tenth bandpass filter filters out iload_βIn non-5 subharmonic current obtain 5 order harmonic components of load current
iload_β5f；The centre frequency of tenth bandpass filter is the ω of ω=5p, the damped coefficient of the tenth bandpass filter are as follows:
11st bandpass filter filters out iload_αIn non-7 subharmonic current obtain 7 subharmonic current α axis of load current point
Measure iload_α7f；The centre frequency of 11st bandpass filter is the ω of ω=7p, the damped coefficient of the 11st bandpass filter are as follows:Tenth two band-pass filter filters out iload_βIn non-7 subharmonic current obtain 7 order harmonic components of load current
iload_β7f；The centre frequency of tenth two band-pass filter is the ω of ω=7p, the damped coefficient of the tenth bandpass filter are as follows:
5th Park converter is by 5 subharmonic α axis component i of load current under two-phase stationary coordinate systemload_α5fAnd beta -axis component
Convert iload_β5fFor 5 subharmonic d axis component i of load current in dq coordinate systemload_d5With q axis component iload_q5；
Wherein θpThe PW voltage fundamental component phase exported for PW current draw module in CSC control unit；
6th Park converter is by 7 subharmonic α axis component i of load current under two-phase stationary coordinate systemload_α7fAnd beta -axis component
Convert iload_β7fFor 7 subharmonic d axis component i of load current in dq coordinate systemload_d7With q axis component iload_q7；
Wherein θpThe PW voltage fundamental component phase exported for PW current draw module in CSC control unit.
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 (4)
1. the exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load, which is characterized in that controlled including CSC
Unit and LSC control unit processed；
The CSC control unit, for humorous to 5 subharmonic α beta -axis component of PW voltage under two-phase stationary coordinate system and PW voltage 7 times
Wave α beta -axis component is coordinately transformed, and is inhibited PW voltage 5 times and 7 subharmonic, is obtained the α axis of CW voltage under two-phase stationary coordinate system
Component reference valueWith beta -axis component reference valueAccording to the α axis component reference value of CW voltageWith beta -axis component reference valueThe first pwm signal is obtained, controls CSC using the first pwm signal；
The LSC control unit, for 5 subharmonic dq axis component of load current and 7 subharmonic dq axis component of load current into
Row coordinate transform inhibits PW electric current 5 times and 7 subharmonic, obtains the α axis component reference of the side LSC voltage under two-phase stationary coordinate system
ValueWith beta -axis component reference valueAccording to the α axis component reference value of the side LSC voltageWith beta -axis component reference valueIt obtains
Second pwm signal controls LSC using the second pwm signal；
The CSC control unit includes PW voltage fundamental control module, PW voltage harmonic control module, the side CSC current transformation mould
Block, the side CSC current control module and the side CSC voltage transformation module；
The PW voltage fundamental control module is used for PW voltage fundamental α axis component u under two-phase stationary coordinate systempα1fWith β axis point
Measure upβ1fIt converts to the PW voltage fundamental d axis component under dq coordinate systemWith q axis componentAccording toWithObtain dq
CW current first harmonics q axis component reference value under coordinate systemWith d axis component reference value
The PW voltage harmonic control module is used for 5 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα5fWith β axis
Component upβ5fIt converts to dq55 subharmonic d axis component of PW voltage under coordinate systemWith q axis componentAccording toWith
Obtain dq55 subharmonic q axis component reference value of CW electric current under coordinate systemWith d axis component reference valueIt utilizesWithIt is coordinately transformed, obtains 5 subharmonic d axis component reference value of CW electric current in dq coordinate systemWith q axis component reference valueBy 7 subharmonic α axis component u of PW voltage under two-phase stationary coordinate systempα7fWith beta -axis component upβ7fIt converts to dq7Under coordinate system
7 subharmonic d axis component of PW voltageWith q axis componentIt is right respectivelyWithIt is adjusted to obtain dq7Under coordinate system
7 subharmonic q axis component reference value of CW electric currentWith d axis component reference valueIt utilizesWithIt is coordinately transformed, obtains
The 7 subharmonic d axis component reference value of CW electric current into dq coordinate systemWith q axis component reference valueThen willWith
Addition obtains in dq coordinate system CW electric current 5 times and 7 subharmonic d axis component reference valuesIt willWithAddition obtains dq
CW electric current 5 times and 7 subharmonic q axis component reference values in coordinate system
The side the CSC current transformation module, for by a phase current i of CW under abc coordinate systemca, b phase current icbWith c phase current
iccIt is transformed to the d axis component of CW electric current under dq coordinate systemWith q axis component
The side CSC current control module, for according to CW current first harmonics d axis component reference valueCW electric current 5 times and 7 times humorous
Wave d axis component reference valueWith CW electric current d axis componentObtain CW voltage d axis component reference valueAccording to CW electric current base
Wave q axis component reference valueCW electric current 5 times and 7 subharmonic q axis component reference valuesWith CW electric current q axis componentIt obtains
CW voltage q axis component reference value
The side the CSC voltage transformation module, for by the d axis component reference value of CW voltage under dq coordinate systemJoin with q axis component
Examine valueIt is transformed to the α axis component reference value of CW voltage under two-phase stationary coordinate systemWith beta -axis component reference value
The LSC control unit includes DC bus-bar voltage control module, the side LSC current control module, the side LSC current transformation mould
Block and the side LSC voltage transformation module；
The DC bus-bar voltage control module, for according to DC bus-bar voltage reference valueWith DC bus-bar voltage Udc, obtain
To the side LSC current first harmonics d axis component reference value
The side LSC current control module, for according to the side LSC fundamental current d axis component reference valueIt is loaded in dq coordinate system
5 subharmonic d axis component reference value i of electric currentload_d5, 7 subharmonic d axis component reference value i of load currentload_d7With the side LSC electric current d
Axis component ild, obtain the side LSC voltage d axis component reference valueAccording to 5 subharmonic q axis component of load current in dq coordinate system
Reference value iload_q5, 7 subharmonic q axis component reference value i of load currentload_q7With the side LSC electric current q axis component ilq, obtain the side LSC
Voltage q axis component reference value
The side the LSC current transformation module, for by a phase current i of the side LSC electric current under abc coordinate systemla, b phase current ilbAnd c
Phase current ilcIt is transformed to the d axis component i of the side LSC electric current under dq coordinate systemldWith q axis component ilq；
The side the LSC voltage transformation module, for by the d axis component reference value of the side LSC voltage under dq coordinate systemWith q axis component
Reference valueIt is transformed to the α axis component reference value of the side LSC voltage under two-phase stationary coordinate systemWith beta -axis component reference value
2. the exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load as described in claim 1,
It is characterized in that, the CSC control unit further includes PW voltage subtraction module and the first SVPWM generator；
The PW voltage subtraction module, for according to PW three-phase voltage upa, upb, upcObtain PW voltage fundamental α axis component upα1fAnd β
Axis component upβ1f, 5 subharmonic α axis component u of PW voltagepα5fWith beta -axis component upβ5f, 7 subharmonic α axis component u of PW voltagepα7fWith β axis
Component upβ7f；
The first SVPWM generator, for the α axis component reference value according to CW voltageWith beta -axis component reference valueIt is raw
At the first pwm signal.
3. the exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load as described in claim 1,
It is characterized in that, the side CSC current control module includes the tenth adder, the 11st adder, the 12nd adder, the 13rd
Adder, the first PIR controller and the second PIR controller；
Tenth adder, for CW current first harmonics d axis component reference valueCW electric current 5 times and 7 subharmonic d axis components
Reference valueIt carries outOperation, obtains CW electric current d axis component reference value11st adder, is used for
To CW electric current d axis component reference valueWith CW electric current d axis componentIt carries outOperation；First PIR controller,
For utilizing PIR controller principle pairOperation is carried out, CW voltage d axis component reference value is obtainedDescribed 12nd
Adder, for CW current first harmonics q axis component reference valueCW electric current 5 times and 7 subharmonic q axis component reference values
It carries outOperation, obtains CW electric current q axis component reference value13rd adder, for CW electric current q axis
Component reference valueWith CW electric current q axis componentIt carries outOperation；Second PIR controller, for utilizing PIR
Controller principle pairOperation is carried out, CW voltage q axis component reference value is obtained
4. the exciter control system of brushless dual-feed motor Independent Power Generation under a kind of nonlinear load as described in claim 1,
It is characterized in that, the LSC control unit further includes load current extraction module and the 2nd SVPWM generator；
The load current extraction module is used for from load three-phase current iload_a, iload_b, iload_cIt extracts in dq coordinate system and bears
Carry 5 subharmonic d axis component i of electric currentload_d5, q axis component iload_q5With 7 subharmonic d axis component of load current in dq coordinate system
iload_d7, q axis component iload_q7；
The 2nd SVPWM generator, for exporting the α axis component reference value of the side LSC voltage according to the side LSC voltage transformation moduleWith beta -axis component reference valueGenerate the second pwm signal.
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| US11231014B2 (en) | 2020-06-22 | 2022-01-25 | General Electric Company | System and method for reducing voltage distortion from an inverter-based resource |
| CN111800043B (en) * | 2020-06-27 | 2021-10-08 | 同济大学 | Harmonic current decoupling control system and method for convex synchronous motor |
| CN112436766B (en) * | 2020-12-03 | 2022-02-11 | 华中科技大学 | Load disturbance resisting control device and method for brushless doubly-fed generator |
| CN112865637B (en) * | 2021-01-25 | 2022-03-11 | 华中科技大学 | Torque ripple suppression device and method for brushless double-fed independent power generation system |
| CN114157201B (en) * | 2021-11-23 | 2023-10-03 | 华中科技大学 | Torque pulsation suppression device and method for brushless doubly-fed motor direct-current power generation system |
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| CN102244496A (en) * | 2011-07-08 | 2011-11-16 | 大禹电气科技股份有限公司 | Variable frequency speed-adjusting system for motor |
| WO2013120212A1 (en) * | 2012-02-17 | 2013-08-22 | Woodward Ids Switzerland Ag | Protective device for a doubly fed three-phase generator and method for operating such a protective device |
| CN103259476A (en) * | 2013-04-23 | 2013-08-21 | 南京航空航天大学 | Frequency conversion alternating current generation system control method with voltage harmonic suppression function |
| CN104980071A (en) * | 2015-07-07 | 2015-10-14 | 华中科技大学 | Excitation control device of brushless doubly-fed motor independent power generation system |
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