CN106787837A - The control method of rectifier, device and circuit - Google Patents
The control method of rectifier, device and circuit Download PDFInfo
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- CN106787837A CN106787837A CN201710103509.2A CN201710103509A CN106787837A CN 106787837 A CN106787837 A CN 106787837A CN 201710103509 A CN201710103509 A CN 201710103509A CN 106787837 A CN106787837 A CN 106787837A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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Abstract
The present invention provides a kind of control method and device of rectifier, obtains the outlet side voltage and reference voltage of rectifier, and determines the voltage deviation of the reference voltage and the outlet side voltage；Proportional plus integral control treatment is carried out to the voltage deviation and obtains reference current；Obtain the voltage peak and current component of the input side of rectifier；Treatment is filtered to the current component and obtains filter result；Current deviation is determined with the filter result according to the reference current；Ratio control process are carried out to the current deviation and obtains controlled quentity controlled variable；Determine to refer to control signal according to the controlled quentity controlled variable and the voltage peak.The control method and device can reach the beneficial effect of the output voltage stabilization for causing rectifier.The present invention also provides a kind of control circuit of the rectifier that can reach same beneficial effect.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of control method of rectifier, device and circuit.
Background technology
With the progress of Power Electronic Technique, the requirement more and more higher to the quality of power supply.But can not be kept away in industrial products
Exempt to use nonlinear load, so as to also be received much concern the problems such as causing line voltage distortion, harmonic pollution, imbalance.It is whole
Stream device can cause that net side input current keeps sineization as the indispensable link of variable-frequency power sources, reduce power grid pollution
Dye.Current common Rectifier includes：Voltage oriented Current Decoupling double-closed-loop control, voltage oriented Direct Power control
System, one circle control etc..
For in voltage oriented Current Decoupling double-closed-loop control method conventional at present, electric current loop adoption rate integration control
Device.Due to the presence of integral term in pi controller, cause actual control to produce time delay, there is instantaneous variation in load
When, there is a wave time more long in the output voltage of rectifier, this fluctuates to cause and there is larger line on output voltage
Ripple.
The content of the invention
Based on this, it is necessary to provide a kind of control method, the device of the rectifier of the output voltage stabilization for causing rectifier
And circuit.
A kind of control method of rectifier, including：
The outlet side voltage of reference voltage and rectifier is obtained, and determines the reference voltage with the outlet side voltage
Voltage deviation；
Proportional plus integral control treatment is carried out to the voltage deviation and obtains reference current；
Obtain the voltage peak and current component of the input side of rectifier；
Treatment is filtered to the current component and obtains filter result；
Current deviation is determined with the filter result according to the reference current；
Ratio control process are carried out to the current deviation and obtains controlled quentity controlled variable；
Determine to refer to control signal according to the controlled quentity controlled variable and the voltage peak.
A kind of control device of rectifier, including：
Voltage deviation determining module, for obtaining the outlet side voltage of reference voltage and rectifier, and determines the reference
The voltage deviation of voltage and the outlet side voltage；
Reference current determining module, reference current is obtained for carrying out proportional plus integral control treatment to the voltage deviation；
Input side amount acquisition module, voltage peak and current component for obtaining the input side of rectifier；
Filter result determining module, filter result is obtained for being filtered treatment to the current component；
Current deviation determining module, for determining current deviation with the filter result according to the reference current；
Controlled quentity controlled variable determining module, controlled quentity controlled variable is obtained for carrying out ratio control process to the current deviation；
Control signal determining module, for determining to refer to control signal according to the controlled quentity controlled variable and the voltage peak.
The control method and device of above-mentioned rectifier, obtain the outlet side voltage of reference voltage and rectifier, and determine institute
State the voltage deviation of reference voltage and the outlet side voltage；Proportional plus integral control treatment is carried out to the voltage deviation to be joined
Examine electric current；Obtain the voltage peak and current component of the input side of rectifier；Treatment is filtered to the current component to obtain
Filter result；Current deviation is determined with the filter result according to the reference current；Ratio control is carried out to the current deviation
System treatment obtains controlled quentity controlled variable；Determine to refer to control signal according to the controlled quentity controlled variable and the voltage peak.The control method and dress
Put based on voltage oriented Current Decoupling double-closed-loop control method, and no longer use carries out proportional plus integral control treatment to current component
Mode obtain controlled quentity controlled variable, but adoption rate control process mode and the mode generation that treatment is combined is filtered to current component
Replaced original proportional plus integral control to process so that, improve the response speed of control method, reduce control and postpone, reach so that
The beneficial effect of the output voltage stabilization of rectifier.
A kind of control circuit of rectifier, including：Outlet side voltage operational device, Voltage loop pi controller, electric current
Arithmetic unit, electric current loop proportional controller, input side voltage operational device, filter and input side harvester；
The outlet side of rectifier, the outlet side voltage operational device, the Voltage loop pi controller, the electric current
Arithmetic unit, the electric current loop proportional controller and the input side voltage operational device are sequentially connected, and the input side voltage
Arithmetic unit connects the control end of the rectifier；The outlet side voltage operational device also accesses reference voltage；
The input side harvester includes input and output end, the input connection institute of the input side harvester
The input side of rectifier is stated, the output end of the input side harvester includes current output terminal and voltage output end, the electricity
Pressure output end connects the input side voltage operational device；The filter is connected to the current output terminal and is transported with the electric current
Between calculation device.
Due to the outlet side of rectifier, the outlet side voltage operational device, the Voltage loop pi controller, described
Current arithmetic device, the electric current loop proportional controller and the input side voltage operational device are sequentially connected, and the input side
Voltage operational device connects the control end of the rectifier；The outlet side voltage operational device also accesses reference voltage；The input
Side harvester includes input and output end, and the input of the input side harvester connects the input of the rectifier
Side, the output end of the input side harvester includes current output terminal and voltage output end, and the voltage output end connects institute
State input side voltage operational device；The filter is connected between the current output terminal and the current arithmetic device.Therefore,
The control circuit of above-mentioned rectifier is based on voltage oriented Current Decoupling Double-closed-loop control circuit, electric current loop no longer adoption rate integration
Controller, but instead of original proportional integral control by the way of electric current loop proportional controller and filter cooperate
Device processed, so that, the response speed of control circuit is improved, reduce control and postpone, reach the output voltage stabilization for causing rectifier
Beneficial effect.
Brief description of the drawings
Fig. 1 is the flow chart of the control method of the rectifier of an embodiment；
Fig. 2 is the flow chart of the control method of the rectifier of another embodiment；
Fig. 3 is the structural representation of the control device of the rectifier of an embodiment；
Fig. 4 is the structural representation of the control device of the rectifier of another embodiment；
Fig. 5 is the structural representation of the control circuit of the rectifier of an embodiment；
Fig. 6 is the structural representation of the control circuit of the rectifier of another embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give preferred embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
Refer to Fig. 1, a kind of control method of rectifier, including：
S110：The outlet side voltage of reference voltage and rectifier is obtained, and determines the electricity of reference voltage and outlet side voltage
Pressure deviation.
Outlet side voltage is the DC voltage of rectifier outlet side, and reference voltage is rectifier to reach rectification purpose needs
The reference value of the voltage of output, the reference value can be with empirically determined.Voltage deviation is reference voltage and outlet side voltage
Difference.
S120：Proportional plus integral control treatment is carried out to voltage deviation and obtains reference current.
Proportional plus integral control treatment is carried out to voltage deviation can obtain reference current.The transmission of proportional plus integral control treatment
Function is：Be by the result after Laplace transform (Laplace transformation), wherein, Gs represents transmission function,
Its value is the value of reference current；KpRepresent proportionality coefficient, KsIntegral coefficient is represented, S is complex variable.Based on voltage oriented solution for the current
Voltage loop is mainly the stabilization of controlled output voltage and throws load response speed in coupling double-closed-loop control method, at proportional plus integral control
Parameter in reason needs to carry out experience regulation according to actual conditions.
S130：Obtain the voltage peak and current component of the input side of rectifier.
Can harvester directly gather rectifier input side voltage peak and current component by way of obtain
Voltage peak and current component.Further, in the harvester, phaselocked loop and d-q conversion modules are integrated with.
S140：Treatment is filtered to current component and obtains filter result.
Because the current component of electric current loop has larger error and fluctuation, accordingly, it would be desirable to be filtered treatment to it obtain
Filter result, that is, obtain the DC component of actual input side electric current.
S150：Current deviation is determined according to reference current and filter result.
The difference of reference current and filter result is defined as current deviation.
S160：Ratio control process are carried out to current deviation and obtains controlled quentity controlled variable.
Ratio control process are carried out to current deviation and obtains controlled quentity controlled variable, rather than the mode of passing ratio integration control treatment
Controlled quentity controlled variable is obtained, so as to improve corresponding speed, control is reduced and is postponed.
Wherein, the transmission function of ratio control process is：Gs=Kp, wherein, Gs represents transmission function, and its value is control
Amount；KpProportionality coefficient is represented, in the present embodiment, the response speed of electric current loop is mainly acted on, the size of proportionality coefficient is determined
The waveform of current-responsive has been determined, it is necessary to carry out experience regulation according to actual conditions.
S170：Determine to refer to control signal according to controlled quentity controlled variable and voltage peak.
Controlled quentity controlled variable and voltage peak and, as with reference to control voltage, and then can be according to determining join with reference to control voltage
Control signal is examined, the control end of input to rectifier is controlled to rectifier.
The control method of above-mentioned rectifier, obtains the outlet side voltage of reference voltage and rectifier, and determines reference voltage
With the voltage deviation of outlet side voltage；Proportional plus integral control treatment is carried out to voltage deviation and obtains reference current；Obtain rectifier
Input side voltage peak and current component；Treatment is filtered to current component and obtains filter result；According to reference current
Determine current deviation with filter result；Ratio control process are carried out to current deviation and obtains controlled quentity controlled variable；According to controlled quentity controlled variable and voltage
Peak value determines to refer to control signal.The control method is based on voltage oriented Current Decoupling double-closed-loop control method, and no longer uses
Obtain controlled quentity controlled variable to the mode that current component carries out proportional plus integral control treatment, but adoption rate control process mode with to electricity
The mode that flow component is filtered treatment combination instead of original proportional plus integral control treatment, so that, improve control method
Response speed, reduces control and postpones, and reaches the beneficial effect of the output voltage stabilization for causing rectifier.
Fig. 2 is referred to, wherein in one embodiment, the voltage peak and current component of the input side of rectifier is obtained
Step, i.e. step S130 includes：
S131：Obtain input side voltage, input side electric current and the phase angle of rectifier.
In the present embodiment, the input side of rectifier can be got by gathering the electric current of input side rectifier, voltage
Voltage, input side electric current.Horizontal lock can be entered to the input side voltage of rectifier by phaselocked loop, obtain the phase of voltage, entered
And get the phase angle of the input side voltage of rectifier.
It should be noted that the control purpose of rectifier includes causing input side electric current and input side arc in phase, regulation
Watt current classification Id and reactive current component Iq causes that power factor is 1.Accordingly, it would be desirable to respectively to input side electric current and input
Side voltage carries out d-q conversion.
S133：D-q conversion is carried out to input side electric current according to phase angle and input side electric current, current component, electric current is determined
Component includes active current Id and reactive current component Iq.
S135：D-q conversion is carried out to input side voltage according to phase angle and input side voltage, voltage peak is determined.
The voltage peak is feed-forward voltage, for adapting to power network fluctuation.
Further, the mode for obtaining the phase angle of rectifier is using DSOGI-PLL algorithms (a kind of pair of broad sense second order integro
The software phase-lock-loop algorithm of point device) horizontal lock is entered to the input side voltage of rectifier.So as in the larger harmonic wave of power network and three-phase not
Also phase can be correctly locked under balance, so as to get correct phase angle, and then, be further ensured that in the larger harmonic wave of power network and
In the case of three-phase imbalance, the beneficial effect of the output voltage stabilization for causing rectifier can be also reached.
Wherein in one embodiment, determined with reference to the step of control signal according to controlled quentity controlled variable and voltage peak, i.e. step
S170 includes：
S171：Using voltage peak as feed-forward voltage, determine to refer to control voltage with reference to controlled quentity controlled variable.
Can obtain referring to control voltage after the controlled quentity controlled variable that electric current loop is exported is added with feed-forward voltage, will be at ratio control
The controlled quentity controlled variable that reason is obtained, is added, you can obtain referring to control voltage with voltage peak.
S173：Impulse modulation will be carried out with reference to control voltage, and obtain referring to control signal.
To carrying out impulse modulation with reference to control voltage, the reference control signal of pulse wave form can be obtained, by the arteries and veins
The reference control signal for rushing waveshape is controlled to rectifier.It is thus possible to reach cause rectifier output result more
The beneficial effect of stabilization.
Wherein in one embodiment, filtering process is Kalman filtering treatment.
Because there is larger error and fluctuation in the current component of electric current loop, especially in sampling element and d-q transform parts,
Accordingly, it would be desirable to treatment is filtered to it obtains filter result, that is, obtain the DC component of actual input side electric current.And pass through
Kalman filtering treatment can exactly estimate the DC component after actual input side current transformation, therefore, it can into one
Step, improves the stability of the output voltage of rectifier.Kalman filtering treatment accounting equation be：
Wherein, k is the integer more than 0, ωk、vkIt is noise；ykIt is observed quantity；φkIt is sytem matrix；ckIt is observing matrix；xkIt is state
Variable.Parameter designing can be carried out by Kalman Filter modules in the SIMULINK tool boxes of MATLAB.Then, lead to
Status predication, state estimation are crossed, filtering gain, prediction mean square deviation, actual mean square deviation is calculated and is carried out recursion and go out that Kalman is actual to be measured
Value.
The present invention also provides a kind of control device corresponding with the control method of above-mentioned rectifier.Fig. 3 is referred to, one implements
The control device of the rectifier of example, including：
Voltage deviation determining module 310, for obtaining the outlet side voltage of reference voltage and rectifier, and determines with reference to electricity
The voltage deviation of pressure and outlet side voltage；
Reference current determining module 320, reference current is obtained for carrying out proportional plus integral control treatment to voltage deviation；
Input side amount acquisition module 330, voltage peak and current component for obtaining the input side of rectifier；
Filter result determining module 340, filter result is obtained for being filtered treatment to current component；
Current deviation determining module 350, for determining current deviation according to reference current and filter result；
Controlled quentity controlled variable determining module 360, controlled quentity controlled variable is obtained for carrying out ratio control process to current deviation；
Control signal determining module 370, for determining to refer to control signal according to controlled quentity controlled variable and voltage peak.
The control device of above-mentioned rectifier, obtains the outlet side voltage of reference voltage and rectifier, and determines reference voltage
With the voltage deviation of outlet side voltage；Proportional plus integral control treatment is carried out to voltage deviation and obtains reference current；Obtain rectifier
Input side voltage peak and current component；Treatment is filtered to current component and obtains filter result；According to reference current
Determine current deviation with filter result；Ratio control process are carried out to current deviation and obtains controlled quentity controlled variable；According to controlled quentity controlled variable and voltage
Peak value determines to refer to control signal.The control device is based on voltage oriented Current Decoupling double-closed-loop control method, and no longer uses
Obtain controlled quentity controlled variable to the mode that current component carries out proportional plus integral control treatment, but adoption rate control process mode with to electricity
The mode that flow component is filtered treatment combination instead of original proportional plus integral control treatment, so that, improve control method
Response speed, reduces control and postpones, and reaches the beneficial effect of the output voltage stabilization for causing rectifier.
Fig. 4 is referred to, wherein in one embodiment, input side amount acquisition module 330, including：
Parameter acquiring unit 331, input side voltage, input side electric current and phase angle for obtaining rectifier；
Current component determining unit 333, for carrying out d-q changes to input side electric current according to phase angle and input side electric current
Change, determine current component, current component includes active current and reactive current component；
Component of voltage determining unit 335, for carrying out d-q changes to input side voltage according to phase angle and input side voltage
Change, determine voltage peak.
Wherein in one embodiment, the mode for obtaining the phase angle of rectifier is to rectification using DSOGI-PLL algorithms
The input side voltage of device enters horizontal lock.
Wherein in one embodiment, control signal determining module 370, including：
Control voltage determining unit 371, for using voltage peak as feed-forward voltage, determining with reference to control with reference to controlled quentity controlled variable
Voltage；
Signal pulse modulating unit 373, for that will carry out impulse modulation with reference to control voltage, obtains referring to control signal.
Wherein in one embodiment, filtering process is Kalman filtering treatment.
Because above-mentioned control device is mutually corresponding with above-mentioned control method, to save length, for identical details technology
Feature, therefore not to repeat here.
Fig. 5 is referred to, the present invention also provides the control circuit of the rectifier of an embodiment, including：Outlet side voltage operational
Device 110, Voltage loop pi controller 120, current arithmetic device 130, electric current loop proportional controller 140, input side voltage fortune
Calculate device 150, filter 160 and input side harvester 170.
The outlet side of rectifier 200, outlet side voltage operational device 110, Voltage loop pi controller 120, electric current fortune
Device 130, electric current loop proportional controller 140 and input side voltage operational device 150 is calculated to be sequentially connected, and input side voltage operational device
The control end of 150 connection rectifiers 200.Outlet side voltage operational device 110 also accesses la tension de reference Uref est.La tension de reference Uref est is
Rectifier 200 is the reference value for reaching the voltage that rectification purpose needs output, and the reference value can be with empirically determined.
Input side harvester 170 includes input and output end, the input connection rectification of input side harvester 170
The input side of device 200, the output end of input side harvester 170 includes current output terminal Id/Iq and voltage output end Ud, voltage
Output end Ud connection input side voltage operationals device 150.Filter 160 is connected to current output terminal Id/Iq and current arithmetic device
Between 130.
Outlet side voltage operational device 110 is to carry out computing to the outlet side voltage and la tension de reference Uref est of rectifier 200
Arithmetic unit.The arithmetic unit is connected with the outlet side and la tension de reference Uref est of rectifier 200.Further, the arithmetic unit can be
Adder, the la tension de reference Uref est that the arithmetic unit is input to forward direction and the rectifier 200 that is reversely input to the arithmetic unit it is defeated
Going out side voltage carries out add operation, so that, obtain the deviation of la tension de reference Uref est and outlet side voltage.It is to be appreciated that the fortune
It can also be subtracter to calculate device, and now, la tension de reference Uref est and outlet side voltage are both needed to forward direction and are input to the arithmetic unit, could obtain
To la tension de reference Uref est and the deviation of outlet side voltage.
Voltage loop pi controller 120 is the controller used in Voltage loop, is proportional integral with regard to the controller
Controller.The pi controller is processed the output result of outlet side voltage operational device 110, obtains the ginseng of electric current loop
Examine current value.It should be noted that this is processed as transferring function by treatment using current existing proportional integral.
Input side harvester 170 is the input side electric current and input side voltage of rectifier 200 to be acquired, is processed simultaneously
The device of output.The output end of input side harvester 170 includes current output terminal Id/Iq and voltage output end Ud, wherein electricity
Stream output end Id/Iq is the output end for exporting treated electric current, and voltage output end Ud is the output of treated voltage
End.
Filter 160 is the device being filtered to waveform, can be such as wave filter, can be limited punching specifically
Swash response (FIR) wave filter or infinite-duration impulse response (IIR) wave filter.In the present embodiment, the connection of filter 160 electric current is defeated
Go out to hold Id/Iq, the electric current to current output terminal Id/Iq outputs is filtered.
Current arithmetic device 130 is the arithmetic unit that computing is carried out to electric current.In the present embodiment, current arithmetic device 130 is connected
Voltage loop pi controller 120 and filter 160, to the reference current of the output of Voltage loop pi controller 120
The filter result of value and filter 160 carries out calculation process and obtains current deviation.Further, the arithmetic unit can be addition
The filter result of device, the reference current that the arithmetic unit is input to forward direction and the filter 160 for being reversely input to the arithmetic unit,
So as to obtain current deviation.It is to be appreciated that the arithmetic unit can also be subtracter, now, reference current and filter result are equal
Need forward direction to be input to the arithmetic unit, can just obtain current deviation.
Electric current loop proportional controller 140 is the controller used in electric current loop, and the controller is proportional controller.This ratio
Example integral controller is processed the current deviation that current arithmetic device 130 is exported, and obtains controlled quentity controlled variable.It should be noted that should
It is processed as transferring function by treatment using current existing ratio.
Input side voltage operational device 150 be with the input side of rectifier 200 by input side harvester 170 be connected it is right
Voltage carries out the arithmetic unit of computing.In the present embodiment, the voltage for the voltage output end Ud of input side harvester 170 being exported
As feed-forward voltage, input side voltage operational device 150 is input to.Input side voltage operational device 150 is to electric current loop proportional controller
The controlled quentity controlled variable of 140 outputs and the feed-forward voltage of voltage output end Ud outputs carry out calculation process, obtain referring to control voltage.Enter one
Step ground, the arithmetic unit can be adder, and the controlled quentity controlled variable and feed-forward voltage that the arithmetic unit is input to forward direction carry out addition process,
So as to obtain referring to control voltage.It is the voltage being controlled to rectifier 200 with reference to control voltage.Input side voltage operational
Device 150 connects the control end of rectifier 200, so as to be controlled to rectifier 200.
Due to outlet side, outlet side voltage operational device 110, Voltage loop pi controller 120, the electricity of rectifier 200
Stream arithmetic unit 130, electric current loop proportional controller 140 and input side voltage operational device 150 are sequentially connected, and input side voltage is transported
Calculate the control end that device 150 connects rectifier 200.Outlet side voltage operational device 110 also accesses la tension de reference Uref est.Input side is gathered
Device 170 includes input and output end, and the input of input side harvester 170 connects the input side of rectifier 200, input
The output end of side harvester 170 includes current output terminal Id/Iq and voltage output end Ud, voltage output end Ud connection input sides
Voltage operational device 150.Filter 160 is connected between current output terminal Id/Iq and current arithmetic device 130.Therefore, it is above-mentioned whole
The control circuit for flowing device 200 is based on voltage oriented Current Decoupling Double-closed-loop control circuit, electric current loop no longer adoption rate integration control
Device processed, but original ratio product is instead of by the way of electric current loop proportional controller 140 and filter 160 cooperate
Sub-controller, so that, the response speed of control circuit is improved, reduce control and postpone, reach the output voltage for causing rectifier 200
The beneficial effect of stabilization.
Wherein in one embodiment, outlet side voltage operational device 110 includes two inputs and an output end, output
One input of side voltage operational device 110 connects the outlet side of rectifier 200, outlet side voltage operational device 110 another
Input accesses la tension de reference Uref est.
Voltage loop pi controller 120 include input and output end, Voltage loop pi controller 120 it is defeated
Enter the output end that end connects outlet side voltage operational device 110.The output end connection electric current fortune of Voltage loop pi controller 120
Calculate device 130.
Wherein in one embodiment, filter 160 includes input and output end, the input of filter 160
The current output terminal Id/Iq of connection input side harvester 170.
Current arithmetic device 130 includes two inputs and an output end, and an input of current arithmetic device 130 is connected
The output end of outlet side voltage operational device 110, another input of current arithmetic device 130 connects the output of filter 160
End, the output end of current arithmetic device 130 connects the control end of rectifier 200.
Wherein in one embodiment, electric current loop proportional controller 140 includes input and output end, electric current loop ratio control
The input of device processed 140 connects the output end of current arithmetic device 130.
Input side voltage operational device 150 includes two inputs and an output end, the one of input side voltage operational device 150
The output end of individual input connection electric current loop proportional controller 140, another input connection of input side voltage operational device 150
The voltage output end Ud of input side harvester 170, the output end of input side voltage operational device 150 connects the control of rectifier 200
End processed.
Fig. 6 is referred to, wherein in one embodiment, also including PWM modulator 180, rectifier 200 is that three-phase PWM is whole
Stream device.PWM modulator 180 is connected between input side voltage operational device 150 and rectifier 200.So as to by the form of PWM ripples
Rectifier 200 is controlled, the stability of output voltage is further improved.
Wherein in one embodiment, input side harvester 170 includes the d-q conversion modules 172 of phaselocked loop 171 and the
With the 2nd d-q conversion modules 173.Phaselocked loop 171 is connected to the input side of rectifier 200, and connects a d-q conversion modules
172 and the 2nd d-q conversion module 173.First d-q conversion modules 172 connect filter 160, the 2nd d-q conversion modules 173
Connection input side voltage operational device 150.The corresponding course of work of the present embodiment is：Rectifier 200 is obtained by phaselocked loop 171
The phase angle of input side, a d-q conversion modules 172 carry out d-q conversion to the input side electric current of rectifier 200 and obtain electric current point
Amount, the current component includes active current and reactive current component, and the 2nd d-q conversion modules 173 are to the defeated of rectifier 200
Entering side voltage carries out the voltage peak that d-q conversion obtains the input side of rectifier 200, used as feed-forward voltage.
Specifically, a d-q conversion modules 172 and the 2nd d-q conversion modules 173 are defeated including two inputs and one
Go out end.One input of the first d-q conversion modules 172 and an input of the 2nd d-q conversion modules 173 are all connected with locking phase
The output end of ring 171.The electric current of the input side of another input input rectifier 200 of the first d-q conversion modules 172, the
The voltage of the input side of another input input rectifier 200 of two d-q conversion modules 173.First d-q conversion modules 172
Output end connection filter 160.The connection input side voltage operational of 2nd d-q conversion modules 173 device 150.
Wherein in one embodiment, in order to further improve the stability of the output voltage of rectifier 200, filter
160 is Kalman filter.So, it is ensured that in the case of filter order is less, more preferable filter effect is obtained, and in filtering
In the case that exponent number is higher, still can obtain so that the beneficial effect of the output voltage stabilization of rectifier 200.
Wherein in one embodiment, outlet side voltage operational device 110 is outlet side voltage adder, and/or, electric current fortune
Calculation device 130 is current adder, and/or input side voltage operational device 150 is input side voltage adder.
Wherein in one embodiment, also including rectifier 200.
Above example only expresses several embodiments of the invention, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, multiple deformations can also be made and is improved, these belong to protection model of the invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of control method of rectifier, it is characterised in that including：
The outlet side voltage of reference voltage and rectifier is obtained, and determines the voltage of the reference voltage and the outlet side voltage
Deviation；
Proportional plus integral control treatment is carried out to the voltage deviation and obtains reference current；
Obtain the voltage peak and current component of the input side of rectifier；
Treatment is filtered to the current component and obtains filter result；
Current deviation is determined with the filter result according to the reference current；
Ratio control process are carried out to the current deviation and obtains controlled quentity controlled variable；
Determine to refer to control signal according to the controlled quentity controlled variable and the voltage peak.
2. the control method of rectifier according to claim 1, it is characterised in that the input side of the acquisition rectifier
The step of voltage peak and current component, including：
Obtain input side voltage, input side electric current and the phase angle of rectifier；
D-q conversion is carried out to the input side electric current according to the phase angle and input side electric current, the current component, institute is determined
Stating current component includes active current and reactive current component；
D-q conversion is carried out to the input side voltage according to the phase angle and the input side voltage, voltage peak is determined.
3. the control method of rectifier according to claim 2, it is characterised in that obtain the mode at the phase angle of rectifier
It is that horizontal lock is entered to the input side voltage of rectifier using DSOGI-PLL algorithms.
4. the control method of rectifier according to claim 1, it is characterised in that described according to the controlled quentity controlled variable and described
The step of voltage peak determines reference control signal, including：
Using the voltage peak as feed-forward voltage, determine to refer to control voltage with reference to the controlled quentity controlled variable；
The reference control voltage is carried out into impulse modulation, the reference control signal is obtained.
5. the control method of rectifier according to claim 1, it is characterised in that the filtering process is Kalman filtering
Treatment.
6. a kind of control device of rectifier, it is characterised in that including：
Voltage deviation determining module, for obtaining the outlet side voltage of reference voltage and rectifier, and determines the reference voltage
With the voltage deviation of the outlet side voltage；
Reference current determining module, reference current is obtained for carrying out proportional plus integral control treatment to the voltage deviation；
Input side amount acquisition module, voltage peak and current component for obtaining the input side of rectifier；
Filter result determining module, filter result is obtained for being filtered treatment to the current component；
Current deviation determining module, for determining current deviation with the filter result according to the reference current；
Controlled quentity controlled variable determining module, controlled quentity controlled variable is obtained for carrying out ratio control process to the current deviation；
Control signal determining module, for determining to refer to control signal according to the controlled quentity controlled variable and the voltage peak.
7. the control device of rectifier according to claim 6, it is characterised in that the input side amount acquisition module, bag
Include：
Parameter acquiring unit, input side voltage, input side electric current and phase angle for obtaining rectifier；
Current component determining unit, for carrying out d-q changes to the input side electric current according to the phase angle and input side electric current
Change, determine the current component, the current component includes active current and reactive current component；
Component of voltage determining unit, for carrying out d- to the input side voltage according to the phase angle and the input side voltage
Q is converted, and determines voltage peak.
8. the control device of rectifier according to claim 6, it is characterised in that the control signal determining module, bag
Include：
Control voltage determining unit, for using the voltage peak as feed-forward voltage, determining with reference to control with reference to the controlled quentity controlled variable
Voltage processed；
Signal pulse modulating unit, for the reference control voltage to be carried out into impulse modulation, obtains the reference control signal.
9. the control circuit of a kind of rectifier, it is characterised in that including：Outlet side voltage operational device, Voltage loop proportional integral control
Device processed, current arithmetic device, electric current loop proportional controller, input side voltage operational device, filter and input side harvester；
The outlet side of rectifier, the outlet side voltage operational device, the Voltage loop pi controller, the current operator
Device, the electric current loop proportional controller and the input side voltage operational device are sequentially connected, and the input side voltage operational
Device connects the control end of the rectifier；The outlet side voltage operational device also accesses reference voltage；
The input side harvester includes input and output end, and the input connection of the input side harvester is described whole
The input side of device is flowed, the output end of the input side harvester includes current output terminal and voltage output end, and the voltage is defeated
Go out the end connection input side voltage operational device；The filter is connected to the current output terminal with the current arithmetic device
Between.
10. the control circuit of rectifier according to claim 9, it is characterised in that the input side harvester includes
Phaselocked loop and a d-q conversion modules and the 2nd d-q conversion modules；The phaselocked loop is connected to the input side of the rectifier,
And connect a d-q conversion modules and the 2nd d-q conversion modules；The first d-q conversion modules connect the filter
Wave apparatus, the 2nd d-q conversion modules connect the input side voltage operational device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112018731A (en) * | 2020-07-08 | 2020-12-01 | 中车株洲电力机车研究所有限公司 | Monitoring method, device and system for rectifying and filtering device |
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