CN106208058B - A kind of tuning filtering device design method based on subring energy-storage system - Google Patents
A kind of tuning filtering device design method based on subring energy-storage system Download PDFInfo
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- CN106208058B CN106208058B CN201610603615.2A CN201610603615A CN106208058B CN 106208058 B CN106208058 B CN 106208058B CN 201610603615 A CN201610603615 A CN 201610603615A CN 106208058 B CN106208058 B CN 106208058B
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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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- 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
- H02J15/00—Systems for storing electric energy
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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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The tuning filtering device design method based on subring energy-storage system that the invention discloses a kind of, which includes inductance Lr, capacitor CrWith resistance Rr, the inductance Lr, capacitor CrWith resistance RrSeries connection；Resistance R is determined according to DC voltage and maximum exchange power firstr；Then inductance lower limiting value L is determined according to the loss of tuning filtering device branch fundamental frequency partr_low；Determine that the offset of inductance determines inductance upper limit value L further according to acceptable angular deviationr_high；Finally according to Lr_highWith Lr_lowSelect inductance Lr, and capacitance C is determined according to the relation formula between inductance and capacitancer.According to a kind of tuning filtering device design method based on subring energy-storage system disclosed by the invention, it can to greatest extent inhibit the presence of fundametal compoment while providing low impedance path for auxiliary frequency component, i.e., a high impedance be formed to fundametal compoment.
Description
Technical field
The present invention relates to technical field of energy storage more particularly to a kind of tuning filtering device designs based on subring energy-storage system
Method.
Background technology
Filter is a kind of useful signal can be made to pass through and inhibited (or decaying) to unwanted frequency signal simultaneously
Electronic device.
In modern age telecommunication apparatus and all kinds of control systems, filter is using extremely wide, in all electronic units,
Using most, technology it is the most complicated to calculate filter.The good and bad quality and whole system for directly determining product of filter
Performance.So the research and production to filter are always paid attention to by various countries.
Tuning filtering device based on subring energy-storage system Power Exchange is for the energy-storage system design based on subring
Filter.The presence of tuning filtering device be in order to form a low-impedance resonance access to quenching frequency component, while it is right
Fundametal compoment forms a high resistant branch.Since tuning filtering device is a resonance circuit, in the ideal case, as long as the then filtering
Inductance and capacitance in device meet condition of resonance, but tuning filtering device is providing low impedance path for auxiliary frequency component
While, it should the presence of fundametal compoment can be inhibited to greatest extent, i.e., an impedance as high as possible is formed to fundametal compoment.
Invention content
Goal of the invention：In order to form a low-impedance resonance access to quenching frequency component, one is formed to fundametal compoment
A high resistant branch, the present invention provide a kind of tuning filtering device design method based on subring energy-storage system.
Technical solution：A kind of tuning filtering device design method based on subring energy-storage system provided by the invention, it is described
Energy-storage system includes one or more H bridge modules, and the tuning filtering device includes inductance Lr, capacitance CrAnd resistance Rr, the inductance
Lr, capacitance Cr, resistance RrSeries connection, which is characterized in that this approach includes the following steps：
(1) it is V to enable DC voltagec, it is P to enable maximum exchange poweremax, according to resistance RrWith Vc、PemaxRelationship determine
Rr, formula is：
(2) it is f to enable resonant frequencya, it is ω to enable resonance angular frequencya, it is f to enable fundamental frequencym, it is ω to enable fundamental wave angular frequencym,
It is P to enable the loss value of fundamental frequency partloss_m, it is L to enable the lower limiting value of inductancer_low, enable impedance angle of the tuning filtering device in fundamental waveAccording to the power attenuation value and formula of fundamental wave, the lower limiting value L of the inductance is calculatedr_low, formula is：
Wherein, MhFor maximum fundamental modulation degree in H bridge modules,ωm=2 π fm,
ωa=2 π fa；
(3) it is L to enable the upper limit value of inductancer_high, it is Δ L to enable inductance offset, enables the acceptable angular deviation beIt enables
Practical impedance of the tuning filtering device branch in quenching frequency part is Zrr, according to Δ L and Zrr、Rr、ωaRelationship calculate Δ L, into
And according to the Lr_lowThe upper limit value L of inductance is calculated with Δ Lr_high, formula is：
Lr_high=Lr_low+ΔL；
(4) according to calculated Lr_lowAnd Lr_high, select Lr, make Lr_low≤Lr≤Lr_high, according to the LrCalculate electricity
Hold CrValue, formula is：
Advantageous effect：It is provided by the invention it is a kind of based on the tuning filtering device of subring energy-storage system for quenching frequency point
While amount provides low impedance path, inhibits the presence of fundametal compoment to greatest extent, i.e., a high resistant is formed to fundametal compoment
It is anti-.
Description of the drawings
Fig. 1 is the topological diagram of tuning filtering device；
Fig. 2 is tuning filtering device combination each reactance analogous diagram for the moment；
Each reactance analogous diagram when Fig. 3 is tuning filtering device combination two；
Fig. 4 is that the electric current of the tuning branch current and total current when tuning filtering device chooses two kinds of inductance values compares schematic diagram.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention will be further described.
The band subring energy-storage system of the present embodiment includes three H bridge modules, and tuning filtering device includes inductance Lr, capacitance Cr
With resistance Rr, the inductance Lr, capacitance Cr, resistance RrSeries connection, as shown in Figure 1, tuning filtering device is in order to quenching frequency component
A low-impedance resonance access is formed, while a high resistant branch is formed to fundametal compoment.Since tuning filtering device is one humorous
Shake circuit, in the ideal case, as long as then the inductance in the filter and capacitance meet condition of resonance, but tuning filtering
Device for auxiliary frequency component while providing low impedance path, it should can inhibit the presence of fundametal compoment to greatest extent, i.e.,
One impedance as high as possible is formed to fundametal compoment.
(1) it is V to enable DC voltagec, it is P to enable maximum exchange poweremax, according to resistance RrWith Vc、PemaxRelationship determine
Rr, formula is：
(2) impedance value of the arbitrary ω of diagonal frequencies, tuning filtering device branch can be expressed as：
Wherein, ωa=2 π faFor resonance angular frequency.
Because of the resistance R in tunable filter circuitrVery little for opposite reactance, thus from the above it can be seen that tuning filtering device branch
The impedance value on road is mainly determined by its inductance value, and impedance of the branch in fundamental frequency and quenching frequency is all with inductance
Value LrIncrease and increase.
It is f to enable resonant frequencya, it is ω to enable resonance angular frequencya, it is f to enable fundamental frequencym, it is ω to enable fundamental wave angular frequencym, enable base
The loss value of frequency part is Ploss_m, it is L to enable the lower limiting value of inductancer_low, enable impedance angle of the tuning filtering device in fundamental waveRoot
According to the power attenuation value and formula of fundamental wave, the lower limiting value L of the inductance is calculatedr_low, formula is：
Wherein, MhFor maximum fundamental modulation degree in three H bridge modules, ωm=2
πfm, ωa=2 π fa；
If only consider from tuning filtering device branch in the loss of fundamental wave part, then its inductance value LrIt is bigger, damage
It consumes smaller.
In order to analyze influence of the different induction value to entire circuit impedance and electric current in tuning filtering device, two kinds of differences are chosen
Tuning filtering device parameter, and its simulation result is compared, two kinds of parameters are as shown in the table：
Simulation result is as shown in Figures 2 to 4.
As can be seen from Figure 4, tuning filtering device in the case of small capacitances electric current than variance be significantly less than bulky capacitor when feelings
Condition.So selection small capacitances are conducive to take into account the realization of tuning and LC filter filtering functions.
But on the other hand, the quality factor of resonance circuitAnd the electricity of resonant branch inductance and capacitance both ends
It is pressed with following relationship：UL(j ω)=UC(j ω)=QUi(j ω), namely capacitance is smaller in the tuning filtering device, when inductance is bigger,
Quality factor are higher, and inductance capacitance both ends will occur comparing U at this timeiIt is higher by Q times of overvoltage.
(3) simultaneously, consider from other side, certain error is there will necessarily be in the inductance capacitor of actual use, and
Can also there be certain offset with the change of external environment (such as temperature in use), design parameter, the presence of above-mentioned error,
Inherently affect to the correct work of tuning filter.
It is L to enable the upper limit value of inductancer_high, it is Δ L to enable inductance offset, enables the acceptable angular deviation beIt enables and adjusting
Practical impedance of the humorous filter branches in quenching frequency part is Zrr, according to Δ L and Zrr、Rr、ωaRelationship calculate Δ L, in turn
According to the Lr_lowThe upper limit value L of inductance is calculated with Δ Lr_high, formula is：
Lr_high=Lr_low+ΔL；
The electric current of tuning filtering device branch is represented by
For the phase angle of the equivalent output quenching frequency voltage of energy storage converter unit, Vah=Vc,
From above formula it is found that the offset of resonant inductance can lead to the phase offset of quenching frequency electric currentAnd its amplitude
It can reduce accordingly.To three H bridge module DC side power supplys E1~E3The power of exchange will also deviate theoretical value, in some instances it may even be possible to
Deviate from the design object of required exchange completely.For example, third H bridge module DC side power supplys E3The active power of output may
From 0~P3.Wherein P3For
When the inductance value offset of tuning filtering device is ± 2%,It can be by reducing inductance LrOr increase resistance
Value RrTo minimize.RrDetermine the size for exchanging power, SOC balance speed and power attenuation.RrIncrease will weaken SOC
Balance route is run and efficiency.And at the same time, reduce inductance LrThe fundamental component in tuning filtering device branch will be increased.It should
The increase of fundamental frequency voltages and electric current can equally influence the operational efficiency of whole system in branch.Thus, in tuning filtering device branch
Inductance and resistance design should consider system control accuracy and whole system loss.
(4) finally according to calculated Lr_lowAnd Lr_high, select Lr, make Lr_low≤Lr≤Lr_high, according to the LrMeter
Calculate capacitance CrValue, formula is：
Basic principles and main features of the invention and advantageous effect and embodiment has been shown and described above.The present invention
It is the design method of the tuning filtering device based on subring energy-storage system Power Exchange, for other similar to the design side of filter
Method also belongs to the scope of the present invention.
Claims (1)
1. a kind of tuning filtering device design method based on subring energy-storage system, the energy-storage system includes one or more H
Bridge module, the tuning filtering device include inductance Lr, capacitance CrAnd resistance Rr, the inductance Lr, capacitance Cr, resistance RrSeries connection,
It is characterized in that, this approach includes the following steps：
(1) it is V to enable DC voltagec, it is P to enable maximum exchange poweremax, according to resistance RrWith Vc、PemaxRelationship determine Rr, public
Formula is：
(2) it is f to enable resonant frequencya, it is ω to enable resonance angular frequencya, it is f to enable fundamental frequencym, it is ω to enable fundamental wave angular frequencym, enable fundamental frequency
Partial loss value is Ploss_m, enable inductance LrLower limiting value be Lr_low, enable impedance angle of the tuning filtering device in fundamental wave be
According to the power attenuation value and formula of fundamental wave, the inductance L is calculatedrLower limiting value Lr_low, formula is：
Wherein, MhFor maximum fundamental modulation degree in H bridge modules,ωm=2 π fm, ωa
=2 π fa；
(3) inductance L is enabledrUpper limit value be Lr_high, enable inductance LrOffset is Δ L, enables the acceptable angular deviation beIt enables
Practical impedance of the tuning filtering device branch in quenching frequency part is Zrr, according to Δ L and Zrr、Rr、ωaRelationship calculate Δ L, into
And according to the Lr_lowInductance L is calculated with Δ LrUpper limit value Lr_high, formula is：
Lr_high=Lr_low+ΔL；
(4) according to calculated Lr_lowAnd Lr_high, select Lr, make Lr_low≤Lr≤Lr_high, according to the LrCalculate capacitance Cr's
Value, formula are：
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023012A (en) * | 2012-11-25 | 2013-04-03 | 中国能源建设集团广东省电力设计研究院 | Design method of flexible direct-current transmission system converter station filter |
| CN103401402A (en) * | 2013-07-03 | 2013-11-20 | 西安交通大学 | LCL filter of grid-connected three-level voltage source converter and design method thereof |
-
2016
- 2016-07-28 CN CN201610603615.2A patent/CN106208058B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023012A (en) * | 2012-11-25 | 2013-04-03 | 中国能源建设集团广东省电力设计研究院 | Design method of flexible direct-current transmission system converter station filter |
| CN103401402A (en) * | 2013-07-03 | 2013-11-20 | 西安交通大学 | LCL filter of grid-connected three-level voltage source converter and design method thereof |
Non-Patent Citations (3)
| Title |
|---|
| A. V. Jouanne,P. N. Enjeti.Design Considerations for an Inverter Output Filter to Mitigate the Effects of Long Motor Leads in ASD Applications.《IEEE Trans. Ind. Appl.》.IEEE,1997, * |
| 易桂平，黄慧春，胡仁杰.基于LCL输出滤波器的双环控制并网逆变器研究.《太阳能学报》.中国可再生能源学会,2016, * |
| 金一丁，宋强，刘文华.大容量链式电池储能系统及其充放电均衡控制.《电力自动化设备》.南京电力自动化研究所有限公司,2011, * |
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