CN107147118A - A kind of harmonic controling device administered applied to electrified railway electric energy - Google Patents
A kind of harmonic controling device administered applied to electrified railway electric energy Download PDFInfo
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- CN107147118A CN107147118A CN201710333588.6A CN201710333588A CN107147118A CN 107147118 A CN107147118 A CN 107147118A CN 201710333588 A CN201710333588 A CN 201710333588A CN 107147118 A CN107147118 A CN 107147118A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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- H02J13/0006—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of harmonic controling device administered applied to electrified railway electric energy, including main circuit and control circuit, the control circuit includes DSP control module, and the DSP control module includes improved harmonic and suppresses control structure, and the improved harmonic, which suppresses control structure, to be included：Fundamental wave controller, using the difference of reference signal and feedback signal as input, the feedback signal is the inverter output current gathered from main circuit；Harmonic controller, be provided with it is multiple, it is separately positioned with the fundamental wave controller, input is used as using feedback signal；Coupling Control Unit, the harmonious wave controller of linker wave controller, output control signal is generated according to the output and disturbance of the harmonious wave controller of fundamental wave controller respectively.Compared with prior art, the present invention has the advantages that can maximize degree administers electric railway traction power supply grid harmonic wave and reactive-load compensation.
Description
Technical field
The invention belongs to electric railway field, it is related to a kind of harmonic controling device and method, should more particularly, to one kind
The harmonic controling device administered for electrified railway electric energy.
Background technology
The power supply of electric railway traction power supply network is reliable and security is that electric locomotive is safe and reliable, economical operation
Important leverage.And electric locomotive, as a kind of special electric load, it uses single phase power supply mode, is not taking compensation to arrange
Inevitably superior power system injects negative-sequence current when applying；Due to electric locomotive load be rectification drive and with
Machine, while bringing the power quality problem severe exacerbation such as idle, harmonic wave, voltage pulsation traction power supply net and its higher level
The quality of power supply of power system.Wherein, negative-sequence current increase synchronous motor added losses, reduction transformer exert oneself, cause after
Electrical protective device malfunction etc.；Harmonic current causes generator, transformer, transmission line of electricity added losses, and is put there may be harmonic wave
Burn power equipment greatly；Reactive power deficiency increase transmission line loss, reduces voltage level, to power system and Traction networks
Safe and reliable power supply bring challenge.Therefore, it is necessary to effective control measures be taken, to the quality of power supply of traction power supply net
It is controlled, is in allowed band, ensures power system and the safe and reliable power supply of Traction networks.
Electric railway negative phase-sequence, harmonic wave and the Reactive-current General Compensation method proposed both at home and abroad at present, which can be divided into, actively to be controlled
Two classes of reason and passive improvement.Active administering method mainly has：(1) increase Traction networks capacity when planning, improve Traction networks electric energy matter
Amount problem tolerance；(2) commutation of traction substation inlet wire is accessed, and can obviously reduce because of bearing that Traction networks single phase power supply is produced
Sequence；(3) negative phase-sequence is reduced using balance traction transformer；(4) using orthogonal type electric locomotive is handed over, locomotive harmonic wave can effectively be reduced
Content, and power factor is close to 1, but negative phase-sequence can not be solved the problems, such as.Passive administering method mainly has：(1) passive compensator, it is main
If SVC (Static VarCompensator, SVC)；(2) active compensator, mainly there is single-phase access
Active Power Filter-APF (ActivePower Filter, APF), the STATCOM (Static of three-phase access
Compensator, STATCOM), two-phase access railway power regulator (Railway Power Conditioner, negative phase-sequence
Dynamic regulation device) and various modification structures.But these modes or technology can only partly improve the quality of power supply, it is impossible to effectively
Solve the problems, such as the negative phase-sequence seriously existed in electric railway.
For these reasons with the defect and deficiency of existing market product, scholar and enterprise begin one's study electric railway
Electric energy administers adjusting means, and it has the functions such as watt current transfer, reactive-load compensation, stable supply conductor voltage and filtering harmonic wave,
Replace existing market product and technology.But the difficult point of the device is the rational current ring parameter of selection, especially works as drawing electric network
When there is harmonic wave, the size of electric current loop scale parameter conversion bandwidth will be impacted, and larger bandwidth can be realized to harmonic component
Suppression, but can deteriorate the control effect of system to a certain extent by containing certain harmonic component in reference instruction, but
The reduction of bandwidth will necessarily cause response speed it is slack-off the problems such as, this patent will realize parameter selection bandwidth and harmonic wave control
The optimization of effect.
Conventional method is to use many PI control strategies, sets up multiple synchronous rotating frames and each harmonic component is carried out
Individually control, this needs substantial amounts of Harmonic Decomposition, wave filter design and coordinate transform；Also adoption rate-integration-resonance
(PIR) control strategy, by PI controllers adding proportion resonant controller (PR) realize to harmonics restraint.But in reality
Find that PIR has two with PR controllers in design application：1. the presence of proportional is by the gain of the whole frequency range of controller
All improve, be difficult to realize the suppression to harmonic component.2. the resonance portion of controller is all by single order molecule and second order denominator group
Into, it is impossible to the closed loop transfer function, zero phase response at resonance point is realized, is unfavorable for the suppression to harmonic component.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is applied to electrification
The harmonic controling device that railway electric energy is administered.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of harmonic controling device administered applied to electrified railway electric energy, including main circuit and control circuit, it is described
Circuit is controlled to include DSP control module, the DSP control module produces corresponding pwm pulse according to the power network signal of collection,
Main circuit is controlled to carry out idle and harmonic compensation, the DSP control module includes improved harmonic and suppresses control structure, and this changes
Entering type harmonics restraint control structure includes：
Fundamental wave controller, the difference using reference signal and feedback signal is as input, and the feedback signal is from main circuit
The inverter output current of collection；
Harmonic controller, be provided with it is multiple, it is separately positioned with the fundamental wave controller, input is used as using feedback signal；
Coupling Control Unit, the harmonious wave controller of difference linker wave controller, according to the harmonious wave controller of fundamental wave controller
Output and disturbance generation output control signal, and regard the output control signal as feedback signal.
The transmission function of the harmonious wave controller of the fundamental wave controller is：
Wherein, h represents overtone order, KrhRepresent the gain coefficient of controller under h subharmonic, ωchRepresent h subharmonic bands
Wide coefficient, ωhRepresent h resonance point angular frequency, L and R represent the inductance of electrified railway electric energy improvement adjusting means and equivalent
Resistance.
The Coupling Control Unit is also associated with disturbance input end.
The main circuit includes VV transformers, step-down transformer, the first pwm converter and the second pwm converter, described
VV transformers connect three-phase high-voltage power supply and electric locomotive respectively, and the step-down transformer is provided with two, and one of them connects respectively
A supply arm and the first pwm converter for electric locomotive is connect, another connects another supply arm and second of electric locomotive respectively
Pwm converter, first pwm converter and the 2nd PWM converters are connected by a DC capacitor, the first PWM conversion
Device and the second pwm converter are connected with DSP control module respectively.
It is described control circuit also include be connected respectively with DSP control module voltage x current sample circuit, drive circuit,
Input circuit and protection circuit are shown, the DSP control module is dsp chip, and the improved harmonic suppresses control structure collection
Into in dsp chip, the drive circuit is connected with main circuit.
The dsp chip is the integrated control panels of DSP28335.
The dsp chip is connected with host computer by communication module.
The communication module is isolated form RS-485 full-duplex transceivers.
The drive circuit is DR-POW2 driving chips.
Compared with prior art, the present invention has advantages below：
1) present invention is separately positioned to the harmonious wave controller progress of fundamental wave controller, each harmonic component is carried out independent
Control, the input of fundamental wave controller is reference quantity and the difference of feedback quantity, and the input of harmonic controller only has feedback signal, and
The proportional of QPR controllers is saved, zero point is increased in resonance portion, the degree that can not only maximize is administered electric railway and led
Draw power supply grid harmonic wave and reactive-load compensation, it is also possible that control strategy and structure design reach simplification, reduce amount of calculation.
2) main circuit of the invention is mainly made up of two single phase step-down transformers, two voltage converters (PWM)
Back-to-back four quadrant running structure, DC side shares electric capacity, and AC is tapped in the supply arm of traction substation two, with having
The functions such as the transfer of work(electric current, reactive-load compensation, stable supply conductor voltage and filtering higher hamonic wave.
3) in the hardware design of DSP control module of the present invention, dsp chip uses the integrated control panels of DSP28335, is integrated with
Numerous interfaces, simplify the design of peripheral circuit；Communication module uses isolated form RS-485 full-duplex transceivers, and isolation is logical
Road is integrated on a single die with transceiver, eliminates middle extra design link and reduces volume；Drive circuit is used
DR-POW2 driving chips, with electric isolution function, it is possible to achieve the driving of two complementary IGBT pipes in main circuit.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 controls the hardware overall design drawing of circuit for the present invention；
Fig. 3 is isolated form RS-485 full-duplex transceivers ISO3082 circuit diagram；
Fig. 4 is the circuit diagram of DR-POW2 driving chips；
Fig. 5 is negative sequence compensation vector schematic diagram of the invention；
Fig. 6 is that retrofit controller of the present invention is compared with the open loop Bode diagram of tradition QPR controllers；
Fig. 7 is the block diagram that improved harmonic of the present invention suppresses control structure；
Fig. 8 is closed loop Bode diagram of the reference signal to output；
Fig. 9 is to administer adjusting means output current harmonics frequency using electrified railway electric energy after conventional harmonic technology for eliminating
Spectrum；
Figure 10 is to administer adjusting means output current harmonics using electrified railway electric energy after improved harmonic technology for eliminating
Frequency spectrum.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the technology of the present invention side
Implemented premised on case, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited
In following embodiments.
The present embodiment provide it is a kind of applied to electrified railway electric energy administer harmonic controling device, including main circuit and
Circuit is controlled, as shown in Figure 1.Wherein, main circuit includes VV transformers, step-down transformer, the first PWM converters and the 2nd PWM
Converter, VV transformers connect three-phase high-voltage power supply and electric locomotive respectively, and step-down transformer is provided with two, one of them point
Not Lian Jie electric locomotive a supply arm and the first pwm converter, another connect respectively electric locomotive another supply arm and
Second pwm converter, the first pwm converter and the second pwm converter are connected by a DC capacitor, the first pwm converter and
Second pwm converter is connected with DSP control module respectively.First pwm converter mainly becomes left bridge arm to traction and flowed into
With outflow control；Second pwm converter, which mainly becomes right bridge arm to traction, to carry out flowing in and out control；Step-down transformer master
Play decompression and buffer action；VV transformers primarily serve decompression and supply electricity to locomotive；First pwm converter is issued with
DC capacitor C between pwm converterdPlay the peaceful ripple of energy storage, two converters is realized each other and decouple and mutual not shadow
Ring.
Circuit is controlled to include DSP control module, voltage x current sample circuit, display input circuit, drive circuit and protection
Circuit, DSP control module produces corresponding pwm pulse according to the power network signal of collection, and control main circuit carries out idle and harmonic wave
Compensation；DSP control module is dsp chip；The major function of voltage x current sample circuit be to power network current it is active and reactive,
Harmonic wave and electric network voltage phase detection, so as to control balance and energy flow direction；Protection circuit be mainly it is over-pressed, under-voltage,
The detection of the signals such as excessively stream, the power device for protecting electric railway electric energy quality comprehensive treatment device；Display input electricity
Road is peripheral circuit, for display and parameter setting.Circuit is controlled to use suitable control method, two inverters of joint are real
Existing active power is transferred to another supply arm from a supply arm, while idle and harmonic compensation can each be carried out, so as to reach negative
The purpose of sequence harmonic compensation；Drive circuit is used to export the IGBT work in PWM ripples driving main circuit according to dsp chip.
The hardware master-plan of circuit is controlled as shown in Fig. 2 wherein dsp chip use is integrated with numerous interfaces
The integrated control panels of DSP28335, interface is including DSP, SRAM, EPROM, A/D, PWM, CAN etc..The dsp chip simplifies periphery
Circuit design, only needs signal sample circuit, pwm pulse drive circuit and over-voltage over-current protection circuit.
Dsp chip is connected with host computer by communication module, and communication module uses 485 serial communications, is compared to RS-
For 232 communications.With transmission speed is fast, transmission range length and the characteristics of strong anti-interference performance.In longer-distance transmission
The interference such as ground loop, transient voltage is often had, in order to ensure the safety and reliable, a reliable isolation design of system
It is extremely important, all it was that one optocoupler of access or digital isolator are isolated in the middle of controller and transceiver in the past, this makes
Into the increase of design difficulty and small product size, such case becomes apparent when being particularly configured to full-duplex communication, the present embodiment
Communication module uses the isolated form RS-485 full-duplex transceiver ISO3082 of Capacitor apart formula, can effectively improve the two and ask
Topic, it is integrated on a single die by channel isolation and transceiver, eliminates middle extra design link and reduces volume,
Its circuit structure is as shown in Figure 3.
IGBT is the multiple device of MOSFET and bipolar transistor.The characteristics of its existing MOSFET easily drives, has work(again
Rate transistor voltage, the advantages of current capacity is big.Its frequency characteristic, can normal work between MOSFET and power transistor
Make in tens kHz frequency ranges, therefore leading position is occupied in the big or middle power application of upper frequency.IGBT is voltage
Control type device, applies more than ten V DC voltage between its gate-emitter, and only μ A grades of leakage current flows through, substantially
On do not consume power.But larger parasitic capacitance (thousands of to up to ten thousand pF) is there is between IGBT gate-emitter, in driving
The rising of pulse voltage and trailing edge need to provide number A charging and discharging currents, could meet the dynamic requirements turned on and off,
This causes its drive circuit also to export certain peak point current.IGBT exists as a kind of powerful multiple device
The problem of may occurring locking phenomena when excessively stream and cause to damage.In excessively stream such as the speed block grid electricity using
Pressure, too high current changing rate can cause overvoltage, need to use soft switching technology for this, thus IGBT driving is very
It is necessary.
IGBT drive circuit must possess 2 functions：One be realize control circuit with by driving IGBT grids electricity every
From；Two are to provide suitable gate driving pulse.Realize that electric isolution can use pulse transformer, differentiating transformer and photoelectricity coupling
Clutch.In the present embodiment, drive circuit uses DR-POW2 driving chips, and two complementary IGBT pipes can be driven simultaneously.DR-
The circuit structure of POW2 driving chips is as shown in Figure 4.
Because high-speed railway locomotive is generally friendship orthogonal electric locomotive, four-quadrant pulsewidth modulation (pulse width are taken
Modulation, PWM) impulse commutation control mode, power factor is close to 1.For ease of analysis, it is assumed that V/V tractive transformers become
Than KB=1, α phase supply arms have locomotive load current to be IαL, and β phase supply arm locomotive loads electric current is IβL。
As shown in figure 5, UA, UB, UC are primary side three-phase voltage, U α, U β are tractive transformer secondary voltage, its phase angle phase
Poor π/3.Before the compensation of negative phase-sequence dynamic regulation device, two bridge arms active locomotive load electric current I respectivelyαLAnd IβL, pass through first
Negative phase-sequence dynamic regulation device (is (I by the 1/2 of two draft arm watt current differencesαL-IβL)/2), weight is transferred to from underloading side
Side is carried, now the amplitude of two bridge arm currents is respectively IαAnd Iβ, its amplitude is equal, phase angle phase difference of pi/3, but can now calculate and obtain
Current unbalance factor is 50%.On this basis, certain capacitive reactive power electric current I is compensated in α bridge armscα, make electric current IcβIt is delayed
Bridge arm voltage π/6, now have
The two bridge arm current I obtained after so compensatingα、IβOverlapped respectively with IA and IB, phase angle differs 2 π/3, it is possible to
Try to achieve primary side C phase currents.Now primary side three-phase current is full symmetric, and negative-sequence current is 0, and can deduce primary side three phase power
Factor is all 1, now just reaches the purpose of comprehensive compensation.For the V/V trailer systems in the case of other any loads, bear
Sequence dynamic regulation device all follows above-mentioned negative sequence compensation principle.
The DSP control module of the present embodiment includes improved harmonic and suppresses control structure, and the improved harmonic suppresses control
Structure includes：
Fundamental wave controller, using the difference of reference signal and feedback signal as input, feedback signal is from main circuit collection
Inverter output current；
Harmonic controller, be provided with it is multiple, it is separately positioned with fundamental wave controller, input is used as using feedback signal；
Coupling Control Unit, the harmonious wave controller of difference linker wave controller, according to the harmonious wave controller of fundamental wave controller
Output and disturbance generation output control signal, Coupling Control Unit is also associated with disturbance input end.
Fundamental wave controller harmony wave controller transmission function be：
Wherein, h represents overtone order, KrhRepresent the gain coefficient of controller under h subharmonic, ωchRepresent h subharmonic bands
Wide coefficient, ωhRepresent h resonance point angular frequency, L and R represent the inductance of electrified railway electric energy improvement adjusting means and equivalent
Resistance.
The harmonious wave controller of fundamental wave controller of the present invention is based on the improvement of tradition QPR controllers, saves proportional, and
Resonance one zero point of addition, offsets, and then eliminate due to shadow of the control object to controller performance with coupling terms 1/ (Ls+R)
Ring, reduce disresonance dot gains.Its open loop Bode diagram (by taking fundamental frequency 50Hz as an example) is as shown in Figure 6.
NPR and QPR represent the retrofit controller and quasi- ratio resonant controller of the present invention respectively in Fig. 6.Analyze first
Amplitude versus frequency characte, NPR is approximately infinitely great in resonance point (50H) place's gain, and the gain in disresonance point part is very small, can be with
The tracking resonance point electric current of floating, while suppressing disresonance point electric current.QPR controllers equally have infinity in resonance point
Gain, but the presence of proportional causes also have larger gain in disresonance frequency range, is unfavorable for suppressing disresonance frequency range
Signal.Analysis phase-frequency characteristic can obtain, NPR controllers resonance point phase response be 90 DEG C, it is contemplated that inverter filtering device with
And the delay effect caused by signal sampling and digital processing, reasonably designing controller parameter can realize to resonance signal
Zero phase response.And phase response of the QPR controllers at resonance point is 0 DEG C, difficult to realize pair after being connected with control object
Resonance point signal zero phase response.
The improved harmonic of the present embodiment suppresses control structure as shown in fig. 7, fundamental wave controller and harmonic controller are divided
From the input of wherein fundamental wave controller is reference signal and the difference of feedback signal, and the input of harmonic controller only has feedback letter
Number.Wherein, iα_ref *For reference variable, iα_outFor inverter output current under two-phase rest frame, Gnpr_hFor modified control
Device processed, N is disturbance variable, Gsys=1/ (Ls+R).
Reference variable and disturbance variable can be respectively obtained is to the transmission function of output：
Corresponding Bode diagram is as shown in Figure 8, it can be seen that reference quantity is to the closed loop transfer function, of output near fundamental wave
Gain is 1, and phase response is zero, relatively low in disresonance band gain, and at the harmonic waves such as 5,7 gain close to 0.
Improved harmonic suppress structure essence be：Harmonic controller only acts on output disturbance end.So, after improvement
Control system not only can be with the fundamental wave part in the instruction of the track reference of floating, and can effective disturbance suppression amount
Introduced harmonic signal.
Fig. 9 is to administer adjusting means output current harmonics frequency using electrified railway electric energy after conventional harmonic technology for eliminating
Spectrum, the THD contents of electric current are 2.12%, although meet it is grid-connected require 5%, but simultaneously it can be seen that 5, the harmonic contents such as 7 compared with
Height, to harmonic wave control or limited.
Figure 10 is to administer adjusting means output current harmonics using electrified railway electric energy after improved harmonic technology for eliminating
Frequency spectrum, the THD of electric current is 1.15%, due to introducing fundamental wave, 5,7,11 resonant controllers in control system, so correspondence
Subharmonic content is below conventional method, mains by harmonics of more effectively drawing up.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel can be obtained by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. a kind of harmonic controling device administered applied to electrified railway electric energy, including main circuit and control circuit, the control
Circuit processed includes DSP control module, and the DSP control module produces corresponding pwm pulse, control according to the power network signal of collection
Main circuit carries out idle and harmonic compensation, it is characterised in that the DSP control module includes improved harmonic and suppresses control knot
Structure, the improved harmonic, which suppresses control structure, to be included：
Fundamental wave controller, the difference using reference signal and feedback signal is as input, and the feedback signal is from main circuit collection
Inverter output current；
Harmonic controller, be provided with it is multiple, it is separately positioned with the fundamental wave controller, input is used as using feedback signal；
Coupling Control Unit, the harmonious wave controller of difference linker wave controller, according to the defeated of the harmonious wave controller of fundamental wave controller
Go out and disturb generation output control signal, and regard the output control signal as feedback signal.
2. the harmonic controling device according to claim 1 administered applied to electrified railway electric energy, it is characterised in that institute
The transmission function for stating the harmonious wave controller of fundamental wave controller is：
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Wherein, h represents overtone order, KrhRepresent the gain coefficient of controller under h subharmonic, ωchRepresent h subharmonic bandwidth system
Number, ωhH resonance point angular frequency is represented, L and R represent that electrified railway electric energy administers the inductance and equivalent resistance of adjusting means.
3. the harmonic controling device according to claim 1 administered applied to electrified railway electric energy, it is characterised in that institute
State Coupling Control Unit and be also associated with disturbance input end.
4. the harmonic controling device according to claim 1 administered applied to electrified railway electric energy, it is characterised in that institute
Stating main circuit includes VV transformers, step-down transformer, the first pwm converter and the second pwm converter, the VV transformers difference
Three-phase high-voltage power supply and electric locomotive are connected, the step-down transformer is provided with two, and one of them connects electric locomotive respectively
One supply arm and the first pwm converter, another connects another supply arm and the second pwm converter of electric locomotive, institute respectively
State the first pwm converter and the second pwm converter is connected by a DC capacitor, first pwm converter and the 2nd PWM become
Parallel operation is connected with DSP control module respectively.
5. the harmonic controling device according to claim 1 administered applied to electrified railway electric energy, it is characterised in that institute
State voltage x current sample circuit, drive circuit, display input circuit that control circuit also includes being connected with DSP control module respectively
And protection circuit, the DSP control module is dsp chip, and the improved harmonic suppresses control structure and is integrated in dsp chip
In, the drive circuit is connected with main circuit.
6. the harmonic controling device according to claim 5 administered applied to electrified railway electric energy, it is characterised in that institute
Dsp chip is stated for the integrated control panels of DSP28335.
7. the harmonic controling device according to claim 5 administered applied to electrified railway electric energy, it is characterised in that institute
State dsp chip and host computer is connected with by communication module.
8. the harmonic controling device according to claim 7 administered applied to electrified railway electric energy, it is characterised in that institute
Communication module is stated for isolated form RS-485 full-duplex transceivers.
9. the harmonic controling device according to claim 5 administered applied to electrified railway electric energy, it is characterised in that institute
Drive circuit is stated for DR-POW2 driving chips.
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