CN105871238A - Combined cascade energy storage converter structure comprising full-bridge DC/DC - Google Patents
Combined cascade energy storage converter structure comprising full-bridge DC/DC Download PDFInfo
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- CN105871238A CN105871238A CN201610245058.1A CN201610245058A CN105871238A CN 105871238 A CN105871238 A CN 105871238A CN 201610245058 A CN201610245058 A CN 201610245058A CN 105871238 A CN105871238 A CN 105871238A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53878—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current by time shifting switching signals of one diagonal pair of the bridge with respect to the other diagonal pair
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a combined cascade energy storage converter structure comprising a full-bridge DC/DC. The combined cascade energy storage converter structure comprises the same three phase circuits, wherein each phase circuit comprises n full-bridge DC/DC converters and corresponding n H-bridge DC/AC converters; an input end of the kth full-bridge DC/DC converter is connected with a kth external power supply; input of the kth H-bridge DC/AC converter is from output of the kth full-bridge DC/DC converter; the output comprises a first output end and a second output end; the first output end of the first H-bridge DC/AC converter passes through a first output filter inductor as the first output end of the phase circuit; the second output end of the nth H-bridge DC/AC converter passes through a second output filter inductor and then is taken as the second output end of the phase circuit; when k is smaller than n and greater than or equal to 1, the second output end of the kth H-bridge DC/AC converter is connected with the first output end of the (k+1)th H-bridge DC/AC converter; k and n are natural numbers; k is smaller than or equal to n and greater than or equal to 1; and the first output end and the second output end of each phase circuit are taken as the output of the phase circuit.
Description
Technical field
The present invention relates to power converter technical field, more particularly, to a kind of group containing full-bridge DC/DC
Close tandem type energy accumulation current converter structure.
Background technology
Along with the day by day scarcity of traditional energy and being on the rise of environmental problem, new energy technology obtains quickly
Development, renewable energy power generation technology is the focus of current countries in the world expert research, has two aspects
Problem gains a special interest.
One, owing to the regenerative resource such as wind energy and solar energy has undulatory property and intermittence, in grid-connected fortune
Bigger uncertainty is had, to the control of power system with stably bring challenge greatly during row.Friendly
, schedulable regenerative resource electric energy be the target that people pursue.Large power energy storage and power adjustments skill
Art is the key solving this problem, in the urgent need to being capable of two-way active power regulation and reactive-load compensation
Unified Power converting means.Additionally, high power battery energy-storage system is at power system peak-frequency regulation auxiliary clothes
Business, light store up the demand of the application such as formula electric automobile charging and conversion electric station and user side demand response the most increasingly
Greatly.
Its two, battery energy storage can be divided into distributed energy storage and the big class of centralized energy storage two, at present due to electric power
The performance of electronic switching device limits, and makes the power of separate unit energy accumulation current converter the most all be not more than 500kW.
As a example by the maximum battery energy storage demonstration project that Two large pools company of China builds, State Grid Corporation of China exists
" wind-light storage transmission " demonstration project that Zhangbei County builds up, wherein energy-storage system is 20MW/95MWh, uses altogether
70 energy accumulation current converters and 13 booster transformers；The energy storage electricity that Southern Power Grid Company builds up at Shenzhen Baoqing
Demonstration project of standing is 4MW/16MWh, comprises 16 energy accumulation current converters of 8 modules altogether, and each module is
High-power is all 500kW.Actually this is all that the technology path having continued to use distributed energy storage is to solve big merit
The problem of the centralized energy storage of rate, is calculated by this, if to build the hundred other energy-accumulating power stations of MW class,
Need to use 200 energy storage inverter and tens of booster transformers, not only floor space is big, system controls
Complicated, difficult coordination, it is overall that the circulation problem that many current transformer parallel operation are brought also can reduce system
Efficiency, and many booster transformers cause bigger reactive loss, needs to increase reactive-load compensation etc. auxiliary
Help equipment.Visible, need the technology path finding a new high-power centralized energy accumulation current converter badly.
Dedoncker R W etc. has applied for Power conversion apparatus for DC-DC
Conversion using dual active bridges United States Patent (USP) (U.S.Patent No:5027264), proposes
By two square wave input voltages and power adjustments, and realize zero by means of transformer leakage inductance and external inductance
Voltage switch.Chinese utility model patent CN 202617004U is improved on this basis, obtains
A kind of isolation type bidirectional DC/DC changer.And the tandem type H bridge DC/AC changer of classics is based on many
The series connection of individual single-phase electricity die mould full bridge inverter unit, by means of suitable control strategy, can realize handing over
The flow of power that stream is two-way with DC side.If both being improved and organically blending, two-way height can be realized
The power conversion of effect DC/AC.Chinese invention patent " a kind of combined bidirectional DC/AC converter topology
Structure " (publication number CN103178742A) propose one " isolated form half-bridge DC/DC " and " H bridge
Tandem type DC/AC " combine combination tandem type two way convertor topological structure, can be as big merit
One of selection of rate energy accumulation current converter.Although half-bridge DC/DC has certain cost advantage, but due to merit
Rate switching tube works in unbalanced state, different voltage stress and loss and there may be longtime running hidden
Suffer from.Accordingly, it is desirable to provide a kind of combination tandem type large power energy storage converter topology containing full-bridge DC/DC
Structure.
Summary of the invention
It is an object of the invention to provide a kind of combination tandem type energy accumulation current converter structure containing full-bridge DC/DC.
For reaching above-mentioned purpose, the present invention uses following technical proposals:
A kind of combination tandem type energy accumulation current converter structure containing full-bridge DC/DC, this structure is by identical three-phase
Circuit forms, and each circuitry phase includes n isolated form full-bridge DC/DC current transformer and n corresponding level
Connection formula H bridge DC/AC current transformer, wherein the input of kth full-bridge DC/DC current transformer connects outside kth
Portion's power supply；The input of kth H bridge DC/AC current transformer from the output of kth full-bridge DC/DC current transformer,
Its output includes the first outfan and the second outfan.
First outfan of the oneth H bridge DC/AC current transformer is electric as this phase through the first output inductor device
First outfan on road；Second outfan of the n-th H bridge DC/AC current transformer is through the second output inductor
As the second outfan of this circuitry phase after device；As 1≤k ＜ n, kth H bridge DC/AC current transformer
Second outfan is connected with the first outfan of kth+1 H bridge DC/AC current transformer, and wherein, k, n are certainly
So number, and 1≤k≤n.
First outfan of each circuitry phase and the second outfan are as the output of this circuitry phase.
Kth full-bridge DC/DC current transformer includes I side full-bridge and II side full-bridge, wherein I side full-bridge include by
First switching tube and the left brachium pontis of second switch pipe composition and be made up of the 3rd switching tube and the 4th switching tube
Right brachium pontis.The junction point of the first switching tube and the 3rd switching tube and second switch pipe and the company of the 4th switching tube
Contact is as the input of I side full-bridge, and it connects the input as this circuitry phase of the kth external power source；The
The junction point of one switching tube and the junction point of second switch pipe and the 3rd switching tube and the 4th switching tube is as I
The outfan of side full-bridge, its primary side with high-frequency isolation transformer after resonant inductor is in parallel.
II side full-bridge includes the left brachium pontis being made up of the 5th switching tube and the 6th switching tube and by the 7th switching tube
Right brachium pontis with the 8th switching tube composition.5th switching tube and the junction point of the 6th switching tube and the 7th switch
Manage the input as II side full-bridge of the junction point with the 8th switching tube, itself and the two of high-frequency isolation transformer
Secondary side is in parallel；5th switching tube and the junction point of the 7th switching tube and the 6th switching tube and the 8th switching tube
Junction point is as the outfan of II side full-bridge, as kth H bridge DC/AC unsteady flow after it is in parallel with capacitor
The input of device.
Kth H bridge DC/AC current transformer includes III side full-bridge, and it includes by the 9th switching tube and the tenth switch
The left brachium pontis of pipe composition and closed the right brachium pontis that pipe forms by the 11st switching tube and twelvemo.9th switch
The junction point of pipe and the junction point of the 11st switching tube and the tenth switching tube and twelvemo pass pipe is as III side
The input of full-bridge；The junction point of the 9th switching tube and the tenth switching tube draws the outfan conduct of left brachium pontis
First outfan of described kth H bridge DC/AC current transformer, the tenth switching tube and twelvemo close the company of pipe
Contact draws the outfan second outfan as described kth H bridge DC/AC current transformer of right brachium pontis.
Preferably, the reactance value of the first output inductor device and the second output inductor device is zero or not
It is zero.
Preferably, each switching tube is the metal oxide layer semiconductor field effect transistor in parallel with diode reverse
Pipe or insulated gate bipolar transistor.
Beneficial effects of the present invention is as follows:
1) isolated form full-bridge DC/DC current transformer former secondary full-bridge is adjusted each according to the control strategy optimized
Internal phase shift, can make changer remain to realize ZVT when input and output voltage has certain difference
And reach higher work efficiency.
2) can be carried out by the phase shifting angle between adjustment isolated form full-bridge DC/DC current transformer former secondary full-bridge
The regulation of power, and the two-way flow of energy can be realized.
3) isolated form full-bridge DC/DC current transformer can work under higher switching frequency, can be greatly reduced
The volume of isolating transformer and cost.
4) by the cascade system of multiple H bridges, can make device be directly accessed high-voltage fence (10kV or
35kV), eliminate grid-connected transformator, reduce installation cost further.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
Fig. 1 illustrates the combination tandem type energy accumulation current converter structure containing full-bridge DC/DC.
Fig. 2 illustrates as DC voltage U11=U12=...=U1n=500V, U21=U22=...=U2nVoltage stabilizing control
When being made as 600V, control the voltage of inductance Ls both sides when power exports 333kW from DC side to AC
Up0、Up1And transformer primary side input current ipStable state waveform.
Fig. 3 illustrates as DC voltage U11=U12=...=U1n=700V, U21=U22=...=U2nVoltage stabilizing control
When being made as 600V, control the voltage of inductance Ls both sides when power exports 333kW from DC side to AC
Up0、Up1And transformer primary side input current ipStable state waveform.
Fig. 4 illustrates as DC voltage U11=U12=...=U1n=500V, U21=U22=...=U2nVoltage stabilizing control
When being made as 600V, control the voltage of inductance Ls both sides when power exports 111kW from DC side to AC
Up0、Up1And transformer primary side input current ipStable state waveform.
Fig. 5 illustrates as DC voltage U11=U12=...=U1n=700V, U21=U22=...=U2nVoltage stabilizing control
When being made as 600V, control the voltage of inductance Ls both sides when power exports 111kW from DC side to AC
Up0、Up1And transformer primary side input current ipStable state waveform.
Fig. 6 illustrates and works as U21=U22=...=U2nVoltage stabilizing control for 600V time, control power from AC to
DC side input 320kW upset is to AC three-phase current when exporting 320kW from DC side to AC
Voltage transient waveform and A phase first order H bridge DC side voltage waveform.
Detailed description of the invention
In order to be illustrated more clearly that the present invention, the present invention is described further below in conjunction with the accompanying drawings.Attached
Parts similar in figure are indicated with identical reference.It will be appreciated by those skilled in the art that down
The specifically described content in face is illustrative and be not restrictive, and should not limit the protection of the present invention with this
Scope.
A kind of combination tandem type energy accumulation current converter structure containing full-bridge DC/DC, this structure is by identical three-phase
Circuit forms, and each circuitry phase includes n isolated form full-bridge DC/DC current transformer and n corresponding level
Connection formula H bridge DC/AC current transformer, wherein the input of kth full-bridge DC/DC current transformer connects outside kth
Portion power supply (U1k)；The input of kth H bridge DC/AC current transformer is from kth full-bridge DC/DC current transformer
Output (U2k), its output includes the first outfan and the second outfan.
First outfan of the oneth H bridge DC/AC current transformer is through the first output inductor device (Lo1) make
The first outfan for this circuitry phase；Second outfan of the n-th H bridge DC/AC current transformer is through the second output
Filter inductor (Lo2) afterwards as the second outfan of this circuitry phase；As 1≤k ＜ n, kth H bridge
Second outfan of DC/AC current transformer is connected with the first outfan of kth+1H bridge DC/AC current transformer,
Wherein, k, n are natural number, and 1≤k≤n.
The neutral point of this three-phase circuit is N, and the first outfan of each circuitry phase and the second outfan are as this
The output of circuitry phase, its voltage is respectively UOA、UOBAnd UOC。
The combination tandem type energy accumulation current converter structure containing full-bridge DC/DC shown such as Fig. 1, as a example by A phase,
Kth full-bridge DC/DC current transformer includes I side full-bridge and II side full-bridge, and wherein I side full-bridge includes by first
Switching tube (S1) and the left brachium pontis of second switch (S2) pipe composition and by the 3rd switching tube (S3) and the
The right brachium pontis that four switching tubes (S4) form.First switching tube (S1) and the company of the 3rd switching tube (S3)
The junction point of contact and second switch pipe (S2) and the 4th switching tube (S4) is as the input of I side full-bridge
End, it connects kth external power source (U1k) as the input of this circuitry phase；First switching tube (S1) and
The junction point of second switch pipe (S2) and the 3rd switching tube (S3) and the connection of the 4th switching tube (S4)
O'clock as the outfan of I side full-bridge, its after resonant inductor (Ls) with high-frequency isolation transformer (T)
Primary side in parallel.
II side full-bridge include the left brachium pontis that is made up of the 5th switching tube (S5) and the 6th switching tube (S6) and
The right brachium pontis being made up of the 7th switching tube (S7) and the 8th switching tube (S8).5th switching tube (S5)
With the junction point of the 6th switching tube (S6) and the 7th switching tube (S7) and the company of the 8th switching tube (S8)
Contact is as the input of II side full-bridge, and it is in parallel with the secondary side of high-frequency isolation transformer (T)；5th
Switching tube (S5) and the junction point of the 7th switching tube (S7) and the 6th switching tube (S6) and the 8th switch
The junction point of pipe (S8) is as the outfan of II side full-bridge, as kth after it is in parallel with capacitor (C)
The input of H bridge DC/AC current transformer.
Kth H bridge DC/AC current transformer includes III side full-bridge, and it includes by the 9th switching tube (S9) and
Left brachium pontis that ten switching tubes (S10) form and closed pipe (S12) by the 11st switching tube (S11) and twelvemo
The right brachium pontis of composition.The junction point and the tenth of the 9th switching tube (S9) and the 11st switching tube (S11) is opened
Close pipe (S10) and twelvemo closes the junction point managing (S12) as the input of III side full-bridge；9th
The junction point of switching tube (S9) and the tenth switching tube (S10) draws the outfan of left brachium pontis as described the
First outfan of k H bridge DC/AC current transformer, the 11st switching tube (S11) and twelvemo close pipe (S12)
Junction point draw the outfan of right brachium pontis as the second outfan of described kth H bridge DC/AC current transformer.
The output voltage of this circuitry phase is UOA。
The exemplary operation waveform that combine tandem type large power energy storage current transformer containing full-bridge DC/DC is given below,
So that its advantage to be described.Take the Ls=65 μ H in Fig. 1, C=10mF, Lo1=Lo2=2mH, transformer voltage ratio
For 1:1, Matlab/Smiulink is utilized to carry out electromagnetic transient simulation.
Fig. 2～Fig. 5 is input side DC voltage U11=U12=...=U1nUnder different electric pressures and
The voltage U of inductance Ls both sides under different outputsp0、Up1And electric current ipStable state waveform.
As DC voltage U11=U12=...=U1n=500V, U21=U22=...=U2nVoltage stabilizing controls as 600V
Time, control the voltage U of inductance Ls both sides when power exports 333kW from DC side to ACp0、Up1
And transformer primary side input current ipStable state waveform as shown in Figure 2.
As DC voltage U11=U12=...=U1n=700V, U21=U22=...=U2nVoltage stabilizing controls as 600V
Time, control the voltage U of inductance Ls both sides when power exports 333kW from DC side to ACp0、Up1
And transformer primary side input current ipStable state waveform as shown in Figure 3.
As DC voltage U11=U12=...=U1n=500V, U21=U22=...=U2nVoltage stabilizing controls as 600V
Time, control the voltage U of inductance Ls both sides when power exports 111kW from DC side to ACp0、Up1
And transformer primary side input current ipStable state waveform as shown in Figure 4.
As DC voltage U11=U12=...=U1n=700V, U21=U22=...=U2nVoltage stabilizing controls as 600V
Time, control the voltage U of inductance Ls both sides when power exports 111kW from DC side to ACp0、Up1
And transformer primary side input current ipStable state waveform as shown in Figure 5.
Understanding, DC/DC changer is by regulating the phase shifting angle in former secondary full-bridge and the phase shift between full-bridge
Angle meets the demand under different operating mode optimized power output and performance.
Work as U21=U22=...=U2nWhen voltage stabilizing controls as 600V, control power defeated from AC to DC side
Enter 320kW upset to AC three-phase current voltage transient when exporting 320kW from DC side to AC
Waveform and A phase first order H bridge DC side voltage waveform as shown in Figure 6, wherein, Va、Vb、VcFor
The AC voltage of each circuitry phase, ia、ib、icElectric current, U are surveyed in exchange for each circuitry phasedcFor A phase first
Level H bridge DC side voltage, PrefFor setting power, PoFor actual power.
Fig. 6 shows that the H bridge DC/AC changer of cascade can when the instruction upset of given active power
Adjust rapidly and follow the tracks of upper new power instruction.In this dynamic process, H bridge DC side voltage is the most slightly
Decline, then under the voltage close loop control action of DC/DC, return to rated value 600V.
Structure proposed by the invention achieves the two-way flow of energy by phase shifting control, can be applicable to base
High-power regulation, energy-accumulating power station, smooth renewable energy power generation output and micro-electricity in battery energy storage
The occasions such as the frequency modulation and voltage modulation in net, are truly realized high-power centralized energy storage.Without booster transformer,
Can be directly accessed 10kV or 35kV high-voltage fence, separate unit energy accumulation current converter power is up to 1MW to 10MW
(accessing 10kV) or 30MW to 50MW (accessing 35kV), be to existing distributed energy storage current transformer
The breakthrough of technology, becomes the following one preferred technique building energy-accumulating power station；It addition, also centralized Control, sound
Answer that speed is fast, the amplitude of accommodation is big；Both scalable active power, it is possible to regulation and compensating power, " one
Machine is dual-purpose "；Can power-on serving, reliability is high；High low pressure realizes electrical isolation, and safety is good；Battery electricity
Pressure matching capacity is strong, is applicable to lithium ion battery, lead-acid battery, flow battery, even electric automobile
The electrokinetic cell eliminated, it is achieved the echelonization of electrokinetic cell utilizes.
The present invention is applicable to the energy-accumulating power station of power system, large-scale regenerative resource electric station grid connection, light storage formula
Electric automobile charging and conversion electric station and user side demand response, have broad application prospects.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and
It is not the restriction to embodiments of the present invention, for those of ordinary skill in the field,
Can also make other changes in different forms on the basis of described above, here cannot be to all
Embodiment give exhaustive, every belong to the obvious change that technical scheme extended out
Change or change the row still in protection scope of the present invention.
Claims (5)
1. the combination tandem type energy accumulation current converter structure containing full-bridge DC/DC, it is characterised in that should
Structure is made up of identical three-phase circuit, and each circuitry phase includes n isolated form full-bridge DC/DC current transformer
With n corresponding tandem type H bridge DC/AC current transformer, wherein
The input of kth full-bridge DC/DC current transformer connects kth external power source；
The input of kth H bridge DC/AC current transformer from the output of described kth full-bridge DC/DC current transformer,
Its output includes the first outfan and the second outfan；
Wherein, the first outfan of a H bridge DC/AC current transformer is through the first output inductor device conduct
First outfan of this circuitry phase；Second outfan of the n-th H bridge DC/AC current transformer is through the second output filter
As the second outfan of this circuitry phase after ripple inducer；As 1≤k ＜ n, kth H bridge DC/AC becomes
Second outfan of stream device is connected with the first outfan of kth+1H bridge DC/AC current transformer, wherein, k,
N is natural number, and 1≤k≤n；
First outfan of described each circuitry phase and the second outfan are as the output of this circuitry phase.
Converter structure the most according to claim 1, it is characterised in that described kth full-bridge DC/DC
Current transformer includes I side full-bridge and II side full-bridge, wherein
Described I side full-bridge includes the left brachium pontis being made up of the first switching tube and second switch pipe and is opened by the 3rd
Close pipe and the 4th switching tube composition right brachium pontis, the junction point of described first switching tube and the 3rd switching tube with
The junction point of described second switch pipe and the 4th switching tube is as the input of I side full-bridge, and it connects described
Kth external power source is as the input of this circuitry phase, described first switching tube and the junction point of second switch pipe
With the junction point of described 3rd switching tube and the 4th switching tube as the outfan of I side full-bridge, it is through resonance
After inducer, the primary side with high-frequency isolation transformer is in parallel；
Described II side full-bridge includes the left brachium pontis being made up of the 5th switching tube and the 6th switching tube and is opened by the 7th
Close pipe and the 8th switching tube composition right brachium pontis, the junction point of described 5th switching tube and the 6th switching tube with
The junction point of described 7th switching tube and the 8th switching tube as the input of II side full-bridge, its with high frequency every
In parallel from the secondary side of transformator, described 5th switching tube and the junction point and the described 6th of the 7th switching tube
The junction point of switching tube and the 8th switching tube, as the outfan of II side full-bridge, is made after it is in parallel with capacitor
Input for described kth H bridge DC/AC current transformer.
Converter structure the most according to claim 1, it is characterised in that described kth H bridge DC/AC
Current transformer includes III side full-bridge, it include the left brachium pontis that is made up of the 9th switching tube and the tenth switching tube and by
11st switching tube and twelvemo close the right brachium pontis of pipe composition, wherein
The junction point of described 9th switching tube and the 11st switching tube and described tenth switching tube and twelvemo
Close the junction point input as III side full-bridge of pipe；
The junction point of described 9th switching tube and the tenth switching tube draws the outfan of left brachium pontis as described the
First outfan of k H bridge DC/AC current transformer, described tenth switching tube and twelvemo close the connection of pipe
Point draws the outfan second outfan as described kth H bridge DC/AC current transformer of right brachium pontis.
Converter structure the most according to claim 1, it is characterised in that the first described output filter
The reactance value of ripple inducer and the second output inductor device is zero or is not zero.
5. according to the converter structure described in Claims 2 or 3, it is characterised in that described each switching tube
It is the metal oxide layer semiconductor field-effect transistor in parallel with diode reverse or insulated gate bipolar crystal
Pipe.
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| CN201610245058.1A CN105871238A (en) | 2016-04-19 | 2016-04-19 | Combined cascade energy storage converter structure comprising full-bridge DC/DC |
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| CN201610245058.1A CN105871238A (en) | 2016-04-19 | 2016-04-19 | Combined cascade energy storage converter structure comprising full-bridge DC/DC |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410932A (en) * | 2016-10-12 | 2017-02-15 | 许继电源有限公司 | Chained battery energy storage converter suitable for medium-voltage DC power distribution network and control method |
| CN110336320A (en) * | 2019-07-10 | 2019-10-15 | 上海交通大学 | A kind of new-energy grid-connected or on-site elimination system based on electric energy router |
| CN114629195A (en) * | 2022-01-17 | 2022-06-14 | 国网吉林省电力有限公司经济技术研究院 | Partial power flexible grouping system for gradient battery utilization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178742A (en) * | 2013-03-19 | 2013-06-26 | 北京交通大学 | Topological structure of combined bidirectional DC/AC (direct current/alternating current) converter |
| CN103280829A (en) * | 2013-04-26 | 2013-09-04 | 上海交通大学 | Isolation double-stage chain type current transformer applied to energy storage of high-capacity battery |
| JP2013240168A (en) * | 2012-05-14 | 2013-11-28 | Ulvac Japan Ltd | Series resonant dc/dc converter |
-
2016
- 2016-04-19 CN CN201610245058.1A patent/CN105871238A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013240168A (en) * | 2012-05-14 | 2013-11-28 | Ulvac Japan Ltd | Series resonant dc/dc converter |
| CN103178742A (en) * | 2013-03-19 | 2013-06-26 | 北京交通大学 | Topological structure of combined bidirectional DC/AC (direct current/alternating current) converter |
| CN103280829A (en) * | 2013-04-26 | 2013-09-04 | 上海交通大学 | Isolation double-stage chain type current transformer applied to energy storage of high-capacity battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410932A (en) * | 2016-10-12 | 2017-02-15 | 许继电源有限公司 | Chained battery energy storage converter suitable for medium-voltage DC power distribution network and control method |
| CN106410932B (en) * | 2016-10-12 | 2018-11-16 | 许继电源有限公司 | Chain type battery energy storage current transformer and control method suitable for middle straightening stream power distribution network |
| CN110336320A (en) * | 2019-07-10 | 2019-10-15 | 上海交通大学 | A kind of new-energy grid-connected or on-site elimination system based on electric energy router |
| CN114629195A (en) * | 2022-01-17 | 2022-06-14 | 国网吉林省电力有限公司经济技术研究院 | Partial power flexible grouping system for gradient battery utilization |
| CN114629195B (en) * | 2022-01-17 | 2024-02-09 | 国网吉林省电力有限公司经济技术研究院 | Partial power flexible grouping system for gradient utilization battery |
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