CN109067154A - A kind of active filter and the method for eliminating train DC bus secondary resonance - Google Patents
A kind of active filter and the method for eliminating train DC bus secondary resonance Download PDFInfo
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- CN109067154A CN109067154A CN201811008199.7A CN201811008199A CN109067154A CN 109067154 A CN109067154 A CN 109067154A CN 201811008199 A CN201811008199 A CN 201811008199A CN 109067154 A CN109067154 A CN 109067154A
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of active filter and the methods for eliminating train DC bus secondary resonance, and the active filter includes the two-way DC/DC converter with stepping functions, filter inductance and storage capacitor.According to power balance theory, when the secondary pulsation of busbar voltage is compensated completely, needs to control the secondary pulsating power that single-phase rectifier exports and the secondary pulsating power that active filter compensates is equal in magnitude, it is contrary.The electrical quantity such as voltage, electric current according to real system detection, carry out closed-loop control, ensure that system dynamic response capability when compensation effect and train actual motion, improve the stability of system.The shortcomings that traditional Passive LC filtering link can be substituted, can overcome passive filtering that can only compensate fixed frequency harmonic wave, it is adapted to complicated power grid environment, it is more more preferable than conventional method effect.The device of the substitution secondary resonance can reduce the volume and weight of traction drive, reduce costs and improve the power density of current transformer.
Description
Technical field
The present invention relates to rail traffic single phase power supply system more particularly to on-vehicle traction converter cross-straight-intersection systems.
Background technique
Single-phase invertor because the features such as its structure is simple, highly reliable, high-efficient, is not only in Locomotive Converter system,
It is also a variety of in uninterruptible power supply, grid-connected, cascade multilevel converter, polyphase ac transmission, aerospace power supply etc. simultaneously
It is widely used in power electronic system.Most of world's bullet train uses modern AC drive system at present, leads
The straight part of friendship-for drawing transmission system is rectified using the single-phase PWM of four quadrant running, and energy feedback when can be by locomotive brake is given
Power grid, while making system power factor with higher.However, monophase system can generate intrinsic secondary pulsating power, make
There is secondary low frequency pulsating in DC bus-bar voltage, endangers entire train traction system.
Traditional passive filtering directly inhibits DC voltage in DC bus both ends parallel connection bulky capacitor or LC resonance circuit
Pulsation.Since voltage ripple frequency is lower, the LC for filtering is bigger.LC resonance circuit floats parameter shift and fundamental frequency
Sensitivity is moved, when LC resonance frequency and harmonic wave source frequency severe mismatch, can be produced between DC support capacitor and LC resonance circuit
Raw second harmonic circulation, while LC resonance circuit, there are overvoltage, overcurrent phenomenon, capacitance voltage is higher than DC bus-bar voltage.
To reduce influence of the parameter shift to filter effect, simultaneously because resonant inductance power density is low, when practice of engineering design circuit,
Often choose biggish capacitance.Big capacitance, voltage levels increase capacitor cost.Therefore traditional approach reduces entire system
The reliability and power density of system, while improving cost.
Summary of the invention
The present invention provides a kind of active filter and the method for eliminating train DC bus secondary resonance, to solve to pass
The inherent defect of system passive LC resonance device, and then vehicle power density is improved, reduce cost.
The present invention relates to a kind of DC side active filter (DC-APF) (two-way Buck/Boost converters), comprising: tool
There is a two-way DC/DC converter of stepping functions, filter inductance Ls and exports secondary arteries and veins for compensating prime rectifier DC side
The storage capacitor Cs of dynamic power；The two-way DC/DC converter is made of upper and lower two switching tubes, and each switching tube includes IGBT
And anti-paralleled diode；
The collector of upper IGBT pipe is connect with direct current positive bus in the two-way DC/DC converter, the transmitting of upper IGBT pipe
Pole is connect with the collector of lower IGBT pipe, and the half-bridge mid point of two-way DC/DC converter (half-bridge inverter) connects filter inductance Ls's
The other end of one end, filter inductance Ls is connect with storage capacitor Cs tandem, another termination direct current negative busbar of storage capacitor Cs,
The emitter of lower IGBT pipe is connect with direct current negative busbar in two-way DC/DC converter.
The DC side active filter course of work includes: the secondary pulsating current when the output of prime rectifier by negative sense
When maximum value changes to positive maximum value (export from rectifier to rear class inverter load direction and be positive with electric current), two-way DC/DC
IGBT pipe or in the conductive state with the antiparallel diode of lower IGBT pipe on converter, DC side active filter works in
Buck mode is depressured AC chopping state, and secondary pulsating current flows to storage capacitor Cs from rectifier, and DC-APF absorbs secondary arteries and veins
Dynamic power, storage capacitor Cs charging, voltage are increased with sinusoidal rule, and voltage is pulsed from minimum point to highest point, and ripple frequency is
100Hz；When the secondary pulsating current of prime rectifier output changes to maximum negative value by positive maximum value, lower IGBT pipe or with
The antiparallel diode of upper IGBT pipe is in the conductive state, and DC side active filter works in Boost mode boost state, electricity
Stream flows to rectifier from storage capacitor Cs, and DC-APF discharges secondary pulsating power, and storage capacitor Cs electric discharge, voltage is with sinusoidal rule
It reduces, voltage is pulsed from highest point to minimum point, ripple frequency 100Hz.
In alternatively possible implementation of the present invention, DC side active filter (DC-APF) (two-way Buck/
Boost), comprising: the two-way DC/DC converter with stepping functions, filter inductance Ls and whole for compensating prime
Stream device DC side exports the storage capacitor Cs of secondary pulsating power；The two-way DC/DC converter is by upper and lower two switching tube groups
At each switching tube includes IGBT and anti-paralleled diode；
The filter inductance Ls mono- terminates half-bridge (half-bridge inverter) midpoint of two-way DC/DC converter, and another termination is straight
Positive bus-bar is flowed, the emitter of upper IGBT pipe is connect with the collector of lower IGBT pipe in the two-way DC/DC converter, upper IGBT pipe
Collector connect with the one end storage capacitor Cs, the hair of lower IGBT pipe in the storage capacitor Cs other end and two-way DC/DC converter
Emitter-base bandgap grading connects direct current negative busbar.
The DC side active filter course of work of the another kind implementation includes: when the two of the output of prime rectifier
It (is exported from rectifier to rear class inverter load direction with electric current when secondary pulsating current changes to maximum negative value by positive maximum value
It is positive), IGBT pipe or manage that antiparallel diode is in the conductive state, and DC side has with lower IGBT on two-way DC/DC converter
Source filter works in Buck mode decompression AC chopping state, and secondary pulsating current flows to rectifier from storage capacitor Cs, stores up
Energy capacitor Cs electric discharge, voltage are reduced with sinusoidal rule, and voltage is pulsed from highest point to minimum point, ripple frequency 100Hz；Currently
When the secondary pulsating current of grade rectifier output changes to positive maximum value by maximum negative value, lower IGBT pipe or anti-with upper IGBT pipe
Diode in parallel is in the conductive state, and DC side active filter works in Boost mode boost state, secondary pulsating current
Storage capacitor Cs, storage capacitor Cs charging are flowed to from rectifier, voltage is increased with sinusoidal rule, and voltage is pulsed from minimum point to most
High point, ripple frequency 100Hz.
The IGBT switching device stress levels of the two-way DC/DC converter are identical as prime rectifier module, be easy to
Rectifier is integrated, convenient for the hardware design of whole device.
The method needs to install electric current, voltage sensor additional in main circuit topology according to the target of realization, according to obtaining
Instantaneous voltage or current data carry out closed-loop control to reach the target of secondary pulsating power balance.
The method for eliminating train DC bus secondary resonance using above-mentioned DC side active filter, comprising:
Step A:DC-APF compensating current control
The determination of step A1:DC-APF compensation current target value: current sense is exported using four-quadrant rectifier DC side
Device and DC bus-bar voltage sensor detect rectifier current output i respectivelygWith DC bus-bar voltage Ud, the rectification that will test
Device exports electric current igWith DC bus-bar voltage UdIt is multiplied and carries out digital bandpass filtering treatment, obtain rectifier and export secondary pulsation
Power instantaneous value Ps, PsDivided by DC-APF storage capacitor DC quantity instruction target value Ucs* DC-APF compensation current target value is obtained
is*；
The closed-loop control of the practical compensation electric current of step A2:DC-APF: DC- is detected using DC-APF compensation current sensor
The practical compensation electric current i of APFs, the practical compensation electric current i of the DC-APF that will testsLow-pass filtering treatment is carried out, then in step A1
Obtained DC-APF compensation current target value is* with the practical compensation electric current i of DC-APFsIt makes the difference to obtain the input of controller 2；
The control of step B:DC-APF storage capacitor voltage
To guarantee compensation effect, it is necessary to control storage capacitor CsVoltage DC component be maintained at steady state value, to reach APF
The target that input, output power balance.It is real using DC-APF storage capacitor voltage sensor detection DC-APF storage capacitor voltage
Border voltage DC amount Ucs, the DC-APF storage capacitor voltage virtual voltage DC quantity U that will testcsIt carries out low-pass filtering (LPF)
Processing, DC-APF storage capacitor DC quantity instruction target value Ucs* with DC-APF storage capacitor voltage virtual voltage DC quantity Ucs's
Difference is the input of controller 1；
Step C: controller 1 is added with the output of controller 2, the duty ratio d of two switching tubes is obtained, according to duty ratio
D controls two switching tube actions of two-way DC/DC converter, realizes the two-way flow of second compensation electric current, realizes and offsets rectification
The function of the secondary pulsating power of device output.
The controller 1 is PI controller, and controller 2 is ratio resonant controller.
According to power balance theory, the second pulse power of control storage capacitor Cs is equal to train cross-straight-intersection traction power supply
The secondary pulsating power of the prime rectifier output of system, opposite in phase, when controlling realization of goal, the theoretically secondary arteries and veins of DC side
Dynamic voltage completely eliminates.
The method for eliminating train DC bus secondary resonance is suitable for the implementation that both the above may relate to, i.e.,
The control method and implementation of two different DC-APF is all the same.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description simply to introduce, it should be apparent that, the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the method schematic diagram that traditional passive LC resonance mode eliminates DC bus-bar voltage pulsation；
Fig. 2 is the electrical schematics for replacing traditional passive LC resonance circuit for eliminating DC bus-bar voltage to pulse with DC-APF
One；
Fig. 3 is another replaceable topology example electrical schematics two of the present invention；
Fig. 4 is voltage, current sensor loading position schematic diagram in electrical schematics one of the present invention；
Fig. 5 is voltage, current sensor loading position schematic diagram in electrical schematics two of the present invention；
Fig. 6 is the practical control principle block diagram of the method for the present invention；
Description of symbols:
Ls: secondary resonance inductance (Fig. 1)；
Cs: secondary resonance capacitor (Fig. 1)；
Cd: DC side Support Capacitor；
1: four-quadrant rectifier DC side exports current sensor position；
2:DC-APF compensates current sensor position；
3 (3 '): DC-APF storage capacitor voltage sensor position；
4 (4 '): DC bus-bar voltage sensor position.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The present invention provides a kind of method for eliminating train DC bus secondary resonance, is suitable for applying cross-straight-intersection formula
The urban rail transit vehicles of single-phase tractive power supply system.The present invention carries out AC chopping by the two-way DC/DC topology of buck
Realize the two-way flow of compensation electric current.The DC-APF topology of this method application can replace traditional passive filtering resonance to fill completely
It sets, it can (for example resonance point deviates influence to filter effect, in system to avoid the inherent defect of traditional passive LC resonance device
Possible circulation etc.), while the device is with respect to conventional apparatus, it is small in size, light-weight, and then vehicle power density is improved, reduce system
Cause this.
Technical solution of the present invention is described in detail with specific embodiment below.These specific embodiments below
It can be combined with each other, the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the method schematic diagram that traditional passive LC resonance mode eliminates DC bus-bar voltage pulsation, in this approach, humorous
Vibration inductance Ls connects with resonant capacitance Cs, and entire resonance device is parallel to train DC side Support Capacitor Cd.
Fig. 2 is the electrical schematics for replacing traditional passive LC resonance circuit for eliminating DC bus-bar voltage to pulse with DC-APF,
In this approach, filter inductance Ls and storage capacitor Cs is connected in series, in another termination half-bridge inverter output of filter inductance Ls
Point, another termination DC side negative busbar of storage capacitor Cs.
In the embodiment one, when the secondary pulsating current of prime rectifier output changes to positive maximum by maximum negative value
When value (exported from rectifier to rear class inverter load direction and be positive with electric current), controls two-way DC/DC converter and work in
Buck mode, when opening upper tube S1, S1 and D2 alternate conduction, secondary pulsating current is exported from rectifier to the energy storage electricity of DC-APF
Hold Cs, DC-APF absorbs secondary pulsating power, and stage storage capacitor Cs voltage is risen with sinusoidal rule, and voltage is from minimum point arteries and veins
It moves to highest point, ripple frequency 100Hz.
When the secondary pulsating current of prime rectifier output changes to maximum negative value by positive maximum value, control two-way
DC/DC converter works in Boost mode, this stage control down tube S2 movement, when S2 is with D1 alternate conduction, secondary pulsating current
It exports from the storage capacitor Cs of DC-APF to DC side, DC-APF discharges secondary pulsating power, stage storage capacitor Cs voltage
Declined with sinusoidal rule, voltage is pulsed from highest point to minimum point, ripple frequency 100Hz.
In the embodiment one, when DC-APF is worked normally, secondary pulsating power and prime four-quadrant that DC-APF is provided
The secondary pulsating power of rectifier output is equal in magnitude, opposite in phase.
Fig. 3 is another replaceable electrical schematics, in this approach, the one end filter inductance Ls directly with direct current positive pole
Line is connected, another termination half-bridge inverter midpoint；The collector and storage capacitor of upper IGBT pipe in the two-way DC/DC converter
The one end Cs connects, and the emitter of lower IGBT pipe connects direct current negative busbar in the storage capacitor Cs other end and two-way DC/DC converter.
In the replaceable embodiment two, according to direction controlling S1 and the S2 alternate conduction of rectifier output power, control
Mode processed and embodiment one are on the contrary, when i.e. secondary pulsating current changes to positive maximum value by maximum negative value, control switch pipe S2
Movement, when electric current changes to maximum negative value by positive maximum value, control switch pipe S1 is acted, DC-APF power compensation principle and reality
It is identical to apply example one.
The present invention eliminates in the method for train DC bus secondary resonance, needs to detect prime rectifier current output ig,
The practical compensation electric current i of DC-APFs, DC bus-bar voltage UdAnd DC-APF storage capacitor voltage virtual voltage DC quantity Ucs, inspection
Location is set as shown in Figure 3, Figure 4, wherein test point 1,2 is powered on flow sensor；Position 3 (3 '), 4 (4 ') are powered on pressure sensor.
The specific implementation process of the method for the present invention is divided into two parts, as shown in fig. 6, first part is DC-APF compensation electric current
Control.The first step is to obtain DC-APF compensation current target value, the rectifier current output i that will testgWith DC bus electricity
Press UdIt is multiplied and carries out digital bandpass filtering (BPF) processing, obtain rectifier and export secondary pulsating power instantaneous value Ps, PsDivided by
DC-APF storage capacitor DC quantity instruction target value Ucs* DC-APF compensation current target value i can be obtaineds*；Second step is DC-
The closed-loop control of the practical compensation electric current of APF, the practical compensation electric current i of the DC-APF that will testsLow-pass filtering treatment is carried out, then
Current target value i is compensated with obtained DC-APFs* it makes the difference to obtain the input of controller 2.
Second part is the control of DC-APF storage capacitor voltage.To guarantee compensation effect, it is necessary to control CsVoltage DC
Component is maintained at steady state value, to reach the target of APF input, output power balance.The DC-APF storage capacitor electricity that will test
It is compacted border voltage DC amount UcsCarry out low-pass filtering (LPF) processing, DC-APF storage capacitor DC quantity instruction target value Ucs* with
DC-APF storage capacitor voltage virtual voltage DC quantity UcsDifference be controller 1 input.
Finally, controller 1 is added with the output of controller 2, the duty ratio d of switch S1 and S2 are obtained.It may be noted that
It is, if the detection practical compensation electric current i of DC-APFsCurrent sensor direction as shown in fig. 6, so when duty ratio d be timing,
It needs to control S2 movement, when d is negative, needs to control S1 movement, if sensor orientation and diagram are on the contrary, so switch is dynamic herein
Make mode with it is aforementioned opposite.
The controller 1 is PI controller, and controller 2 is ratio resonant controller.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of DC side active filter, it is characterised in that: it include: the two-way DC/DC converter with stepping functions, filter
The wave inductance Ls and storage capacitor Cs that secondary pulsating power is exported for compensating prime rectifier DC side；The two-way DC/DC
Converter is made of upper and lower two switching tubes, and each switching tube includes IGBT and anti-paralleled diode；
The collector of upper IGBT pipe is connect with direct current positive bus in the two-way DC/DC converter, the emitter of upper IGBT pipe and
The collector of lower IGBT pipe connects, and the half-bridge mid point of two-way DC/DC converter connects one end of filter inductance Ls, filter inductance Ls's
The other end is connect with storage capacitor Cs tandem, another termination direct current negative busbar of storage capacitor Cs, in two-way DC/DC converter
The emitter of lower IGBT pipe is connect with direct current negative busbar.
2. DC side active filter as described in claim 1, it is characterised in that: exported with electric current from rectifier inverse to rear class
Become device load direction to be positive, when the secondary pulsating current of prime rectifier output changes to positive maximum value by maximum negative value,
IGBT pipe or in the conductive state, the DC side active power filtering with the antiparallel diode of lower IGBT pipe on two-way DC/DC converter
Device works in Buck mode decompression AC chopping state, and secondary pulsating current flows to storage capacitor Cs from rectifier, and DC-APF inhales
Secondary pulsating power, storage capacitor Cs charging are received, voltage is increased with sinusoidal rule, and voltage is pulsed from minimum point to highest point, arteries and veins
Dynamic frequency is 100Hz；When the secondary pulsating current of prime rectifier output changes to maximum negative value by positive maximum value, under
IGBT pipe is in the conductive state with the antiparallel diode of upper IGBT pipe, and DC side active filter works in Boost mode
Pressure-increasning state, electric current flow to rectifier from storage capacitor Cs, and DC-APF discharges secondary pulsating power, storage capacitor Cs electric discharge, electricity
Pressure is reduced with sinusoidal rule, and voltage is pulsed from highest point to minimum point, ripple frequency 100Hz.
3. DC side active filter as described in claim 1, it is characterised in that: the IGBT of the two-way DC/DC converter
Switching device stress levels are identical as prime rectifier module, are easy to integrated with rectifier.
4. a kind of DC side active filter, it is characterised in that: it include: the two-way DC/DC converter with stepping functions, filter
The wave inductance Ls and storage capacitor Cs that secondary pulsating power is exported for compensating prime rectifier DC side；The two-way DC/DC
Converter is made of upper and lower two switching tubes, and each switching tube includes IGBT and anti-paralleled diode；
The filter inductance Ls mono- terminates the half-bridge mid point of two-way DC/DC converter, and another termination direct current positive bus is described two-way
The emitter of upper IGBT pipe is connect with the collector of lower IGBT pipe in DC/DC converter, the collector of upper IGBT pipe and energy storage electricity
Hold the connection of the one end Cs, the emitter of lower IGBT pipe meets the negative mother of direct current in the storage capacitor Cs other end and two-way DC/DC converter
Line.
5. DC side active filter as claimed in claim 4, it is characterised in that: exported with electric current from rectifier inverse to rear class
Become device load direction to be positive, when the secondary pulsating current of prime rectifier output changes to maximum negative value by positive maximum value,
IGBT pipe or in the conductive state, the DC side active power filtering with the antiparallel diode of lower IGBT pipe on two-way DC/DC converter
Device works in Buck mode decompression AC chopping state, and secondary pulsating current flows to rectifier, storage capacitor from storage capacitor Cs
Cs electric discharge, voltage are reduced with sinusoidal rule, and voltage is pulsed from highest point to minimum point, ripple frequency 100Hz；When prime rectifies
When the secondary pulsating current of device output changes to positive maximum value by maximum negative value, lower IGBT pipe or antiparallel with upper IGBT pipe
Diode is in the conductive state, and DC side active filter works in Boost mode boost state, and secondary pulsating current is from rectification
Device flows to storage capacitor Cs, storage capacitor Cs charging, and voltage is increased with sinusoidal rule, and voltage is pulsed from minimum point to highest point,
Ripple frequency is 100Hz.
6. DC side active filter as claimed in claim 4, it is characterised in that: the IGBT of the two-way DC/DC converter
Switching device stress levels are identical as prime rectifier module, are easy to integrated with rectifier.
7. it is secondary humorous that DC side active filter described in application claim 1-6 any claim eliminates train DC bus
The method of vibration, it is characterised in that: include:
Step A:DC-APF compensating current control
Step A1:DC-APF compensation current target value determination: using four-quadrant rectifier DC side output current sensor and
DC bus-bar voltage sensor detects rectifier current output i respectivelygWith DC bus-bar voltage Ud, the rectifier that will test is defeated
Electric current i outgWith DC bus-bar voltage UdIt is multiplied and carries out digital bandpass filtering treatment, obtain rectifier and export secondary pulsating power
Instantaneous value Ps, PsDivided by DC-APF storage capacitor DC quantity instruction target value Ucs* DC-APF compensation current target value i is obtaineds*；
The closed-loop control of the practical compensation electric current of step A2:DC-APF: real using DC-APF compensation current sensor detection DC-APF
Border compensates electric current is, the practical compensation electric current i of the DC-APF that will testsLow-pass filtering treatment is carried out, then obtained in step A1
DC-APF compensates current target value is* with the practical compensation electric current i of DC-APFsIt makes the difference to obtain the input of controller 2；
The control of step B:DC-APF storage capacitor voltage
DC-APF storage capacitor voltage virtual voltage DC quantity U is detected using DC-APF storage capacitor voltage sensorcs, will test
The DC-APF storage capacitor voltage virtual voltage DC quantity U arrivedcsLow-pass filtering treatment is carried out, DC-APF storage capacitor DC quantity refers to
Enable target value Ucs* with DC-APF storage capacitor voltage virtual voltage DC quantity UcsDifference be controller 1 input；
Step C: controller 1 being added with the output of controller 2, obtains the duty ratio d of two switching tubes, is controlled according to duty ratio d
Two switching tube actions of two-way DC/DC converter are made, realize the two-way flow of second compensation electric current, realize that counteracting rectifier is defeated
The function of secondary pulsating power out.
8. eliminating the method for train DC bus secondary resonance as claimed in claim 7, it is characterised in that: the controller 1
For PI controller, controller 2 is ratio resonant controller.
9. eliminating the method for train DC bus secondary resonance as claimed in claim 7, it is characterised in that: according to power-balance
Principle, the prime rectifier that the second pulse power of control storage capacitor Cs is equal to train cross-straight-intersection tractive power supply system export
Secondary pulsating power, opposite in phase.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008199.7A CN109067154B (en) | 2018-08-31 | 2018-08-31 | Active filter and method for eliminating secondary resonance of train direct-current bus |
| PCT/CN2018/120442 WO2020042429A1 (en) | 2018-08-31 | 2018-12-12 | Method for eliminating second harmonics of direct current bus of train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008199.7A CN109067154B (en) | 2018-08-31 | 2018-08-31 | Active filter and method for eliminating secondary resonance of train direct-current bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109067154A true CN109067154A (en) | 2018-12-21 |
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Cited By (12)
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| CN110011524A (en) * | 2019-05-17 | 2019-07-12 | 广东工业大学 | A kind of control method of harmonics restraint, device, equipment and readable storage medium storing program for executing |
| CN112152490A (en) * | 2020-09-23 | 2020-12-29 | 南京信息工程大学 | Power battery integrated charging power converter with bus harmonic absorption function and control method |
| CN112217381A (en) * | 2020-09-17 | 2021-01-12 | 郑州轻工业大学 | Single-phase converter direct-current bus voltage secondary ripple suppression circuit and method |
| CN112865528A (en) * | 2020-12-31 | 2021-05-28 | 北京交通大学 | Secondary pulse power decoupling method based on direct current bus voltage detection |
| CN112953184A (en) * | 2021-03-08 | 2021-06-11 | 中航太克（厦门）电力技术股份有限公司 | Input current harmonic suppression method of UPS (uninterrupted Power supply) with PWM (pulse-width modulation) rectifier |
| CN113114033A (en) * | 2021-05-18 | 2021-07-13 | 西南交通大学 | Direct-current-side secondary ripple suppression device for traction transmission system and control method |
| CN113394959A (en) * | 2021-07-09 | 2021-09-14 | 南通大学 | Second harmonic current suppression system and method based on pulse power feedback |
| CN113400959A (en) * | 2021-07-30 | 2021-09-17 | 南通大学 | Electric drive reconstruction type charging system for electric vehicle considering secondary power pulsation suppression |
| CN113726199A (en) * | 2021-09-03 | 2021-11-30 | 安徽工业大学 | Low-output ripple boost rectifier and control method thereof |
| CN115693632A (en) * | 2022-09-07 | 2023-02-03 | 广东工业大学 | Control method for direct-current micro-grid power oscillation suppression device |
| CN116505536A (en) * | 2023-06-30 | 2023-07-28 | 深圳优普莱等离子体技术有限公司 | Pressure stabilizing system and method for microwave source of MPCVD equipment |
| WO2023226191A1 (en) * | 2022-05-27 | 2023-11-30 | 中车株洲电力机车研究所有限公司 | Train and traction drive system and control method thereof |
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| CN110011524B (en) * | 2019-05-17 | 2021-07-13 | 广东工业大学 | Control method, device and equipment for harmonic suppression and readable storage medium |
| CN110011524A (en) * | 2019-05-17 | 2019-07-12 | 广东工业大学 | A kind of control method of harmonics restraint, device, equipment and readable storage medium storing program for executing |
| CN112217381B (en) * | 2020-09-17 | 2022-03-01 | 郑州轻工业大学 | Single-phase converter direct-current bus voltage secondary ripple suppression circuit and method |
| CN112217381A (en) * | 2020-09-17 | 2021-01-12 | 郑州轻工业大学 | Single-phase converter direct-current bus voltage secondary ripple suppression circuit and method |
| CN112152490A (en) * | 2020-09-23 | 2020-12-29 | 南京信息工程大学 | Power battery integrated charging power converter with bus harmonic absorption function and control method |
| CN112152490B (en) * | 2020-09-23 | 2021-07-27 | 南京信息工程大学 | Power battery integrated charging power converter with bus harmonic absorption function and control method |
| CN112865528A (en) * | 2020-12-31 | 2021-05-28 | 北京交通大学 | Secondary pulse power decoupling method based on direct current bus voltage detection |
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| CN113114033A (en) * | 2021-05-18 | 2021-07-13 | 西南交通大学 | Direct-current-side secondary ripple suppression device for traction transmission system and control method |
| CN113394959A (en) * | 2021-07-09 | 2021-09-14 | 南通大学 | Second harmonic current suppression system and method based on pulse power feedback |
| CN113400959A (en) * | 2021-07-30 | 2021-09-17 | 南通大学 | Electric drive reconstruction type charging system for electric vehicle considering secondary power pulsation suppression |
| CN113400959B (en) * | 2021-07-30 | 2022-12-06 | 南通大学 | Electric drive reconstruction type charging system for electric vehicle considering secondary power pulsation suppression |
| CN113726199A (en) * | 2021-09-03 | 2021-11-30 | 安徽工业大学 | Low-output ripple boost rectifier and control method thereof |
| CN113726199B (en) * | 2021-09-03 | 2023-09-22 | 安徽工业大学 | Low-output ripple boost rectifier and control method thereof |
| WO2023226191A1 (en) * | 2022-05-27 | 2023-11-30 | 中车株洲电力机车研究所有限公司 | Train and traction drive system and control method thereof |
| CN115693632A (en) * | 2022-09-07 | 2023-02-03 | 广东工业大学 | Control method for direct-current micro-grid power oscillation suppression device |
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| CN116505536B (en) * | 2023-06-30 | 2024-02-09 | 深圳优普莱等离子体技术有限公司 | Pressure stabilizing system and method for microwave source of MPCVD equipment |
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| WO2020042429A1 (en) | 2020-03-05 |
| CN109067154B (en) | 2020-05-05 |
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