CN110336320A - A kind of new-energy grid-connected or on-site elimination system based on electric energy router - Google Patents
A kind of new-energy grid-connected or on-site elimination system based on electric energy router Download PDFInfo
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- CN110336320A CN110336320A CN201910619085.4A CN201910619085A CN110336320A CN 110336320 A CN110336320 A CN 110336320A CN 201910619085 A CN201910619085 A CN 201910619085A CN 110336320 A CN110336320 A CN 110336320A
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
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Abstract
The present invention discloses a kind of new-energy grid-connected based on electric energy router or on-site elimination system.The system includes: AC network, electric energy router and multiple power equipments；Electric energy router includes that two-way DC/DC converter is isolated in inductance, cascaded H-bridges reversible transducer and multiple mode of resonance；The exchange side of multiple H bridge topologys of cascaded H-bridges reversible transducer cascades, and passes through inductance connection to AC network；Two-way DC/DC converter is isolated with multiple mode of resonance and connects one to one for multiple H bridge topologys, and the primary side DC side connection of two-way DC/DC converter is isolated with mode of resonance for the DC side of H bridge topology；The secondary side DC side that two-way DC/DC converter is isolated in mode of resonance forms DC bus, and power equipment is connected to DC bus；Power equipment includes new energy equipment, energy-storage battery equipment and load equipment.The present invention have many advantages, such as high efficiency, high reliability, wide gain, energy can transmitted in both directions, can dynamic regulation power quality.
Description
Technical field
The present invention relates to field of electric automatization equipment, more particularly to a kind of new-energy grid-connected based on electric energy router
Or on-site elimination system.
Background technique
With gradually decreasing for fossil energy, the renewable energy such as wind-power electricity generation and photovoltaic power generation will obtain largely in future
Application.It is reply wind-powered electricity generation, photovoltaic etc. to power network safety operation bring challenge, it is also necessary to high capacity cell energy-storage system
It stabilizes new energy power swing, peak-frequency regulation and improves power quality.
Firstly, since generation of electricity by new energy has, high uncertainty, high uncontrollability, distribution is wide, is located in remote, running environment dislikes
Bad, the features such as equipment dependability is low, maintenance work amoun is big, with increasing for Future New Energy Source quantity, at present to the prison of new energy
The scheme that control, O&M use, either still passes through dedicated grid connection interface device upload information, Shang Ji electricity by monitoring system
Net control centre is required to have the condition for being communicated and being dispatched with all new energy or field central controller.This not only adds
Big control difficulty of higher level's power grid to new energy, while believing that the limitation of the technologies such as bandwidth, communication data compression is also serious
Affect the real-time and reliability of scheduling.
Secondly, distributed Voltage capacity is small, but voltage or frequency fluctuation are larger, have alternating current-direct current concurrently, can not be directly accessed
Electric system, therefore different grid-connected power generation system access power distribution networks needs different types of electric energy converting equipment, such as: light
Volt power generation conversion circuit may may also use DC/DC-DC/AC two-stage topology, wind-power electricity generation conversion using direct DC/AC topology
Circuit generally uses AC/DC-DC/AC two-stage topology.Since these conversion equipments are often specially designed according to different application scene,
Following problem will likely be brought: (1) external interface causes without unified standard, each equipment manufacturer's self-defining product interface form
Many kinds of, engineer application is complicated, and follow-up maintenance is difficult；(2) the alternating voltage difference of power grid step-up transformer primary side is accessed
It is larger, no unified standard；(3) device for converting electric energy can not cover all power sections in Practical Project, and the power of engineering type selection is not
Matching phenomenon will likely influence the power quality of power distribution network.
Summary of the invention
The object of the present invention is to provide a kind of new-energy grid-connected based on electric energy router or on-site elimination systems, to solve
The problem of new-energy grid-connected or on-site elimination system topological are at high cost in the prior art, low efficiency.
To achieve the above object, the present invention provides following schemes:
A kind of new-energy grid-connected or on-site elimination system based on electric energy router, comprising: AC network, electric energy router
With multiple power equipments；
The electric energy router includes that two-way DC/DC is isolated in the first inductance, cascaded H-bridges reversible transducer and multiple mode of resonance
Converter；
The cascaded H-bridges reversible transducer includes multiple H bridge topologys, and the exchange side of multiple H bridge topologys cascades, and passes through institute
The first inductance connection is stated to the AC network；Two-way DC/DC transformation is isolated with multiple mode of resonance for multiple H bridge topologys
Device connects one to one, and the primary side DC side of two-way DC/DC converter is isolated with the mode of resonance for the DC side of the H bridge topology
Connection；
The secondary side DC side that two-way DC/DC converter is isolated in the mode of resonance forms DC bus, and the power equipment connects
It is connected to the DC bus；The power equipment includes new energy equipment, energy-storage battery equipment and load equipment.
Optionally, the electric energy router further includes multiple electric energy conversion topologies modules；The power equipment passes through described
Electric energy conversion topologies module is connected to the DC bus.
Optionally, multiple electric energy conversion topologies modules are respectively new energy access electric energy conversion topologies module, energy storage
Battery access electric energy conversion topologies module, AC load access electric energy conversion topologies module and DC load access electric energy conversion are opened up
Flutter module；
The new energy equipment accesses electric energy conversion topologies module by the new energy and is connected to the DC bus；
The energy-storage battery access electric energy conversion topologies module is two quadrant DC/DC translation circuits, and the energy-storage battery is set
It is standby that the DC bus is connected to by the two quadrants DC/DC translation circuit；
The AC load access electric energy conversion topologies module is DC/AC inverter, and the exchange in the load equipment is negative
It carries equipment and the DC bus is connected to by the DC/AC inverter；
The DC load access electric energy conversion topologies module is DC/DC converter, and the direct current in the load equipment is negative
It carries equipment and the DC bus is connected to by the DC/DC converter.
Optionally, the new energy access electric energy conversion topologies module includes wind-power electricity generation access electric energy conversion topologies submodule
Block and photovoltaic power generation access electric energy conversion topologies submodule；
The wind-power electricity generation access electric energy conversion topologies submodule is three-phase full-bridge controlled rectifier, and the new energy is set
Wind power plant in standby is connected to the DC bus by the three-phase full-bridge controlled rectifier；
The photovoltaic power generation access electric energy conversion topologies submodule is Boost DC/DC converter, the new energy equipment
In photovoltaic power generation equipment the DC bus is connected to by the Boost DC/DC converter.
Optionally, the two quadrants DC/DC translation circuit specifically includes: the first full-controlled switch device, the second full-control type
Switching device and the second inductance；
The first end of second inductance is connected with the energy-storage battery, the transmitting of first full-controlled switch device
Pole, second full-controlled switch device collector be connected with the second end of second inductance；First full-control type
The collector of switching device, second full-controlled switch device emitter respectively with the DC bus anode and negative terminal phase
Even.
Optionally, the DC/DC converter is Buck DC/DC converter, Boost DC/DC converter, Cuk DC/DC
Converter or two quadrant DC/DC converters.
Optionally, the cascaded H-bridges reversible transducer specifically includes: multiple H bridge topologys and multiple capacitors；
The exchange side cascade of multiple H bridge topologys is used to form more level outputs；
Multiple H bridge topologys and multiple DC bus capacitors correspond, the DC side of the H bridge topology with it is described
Capacitor is in parallel, for filtering out AC compounent.
Optionally, the mode of resonance is isolated two-way DC/DC converter and is specifically included: the first H bridge reversible transducer, first humorous
Shake element, high frequency transformer, the second resonant element and the 2nd H bridge reversible transducer；
The DC side of the first H bridge reversible transducer is connect with the DC side of the H bridge topology, and the first H bridge is double
Connect to the exchange side of converter with the first end of first resonant element, the second end of first resonant element with it is described
The primary side of high frequency transformer connects, and the secondary side of the high frequency transformer is connect with the first end of second resonant element, described
The second end of second resonant element is connect with the exchange side of the 2nd H bridge reversible transducer, the 2nd H bridge reversible transducer
DC side form the DC bus.
Optionally, first resonant element includes the first resonant inductance, the first resonant capacitance and third resonant inductance；Institute
That states that the first resonant inductance and first resonant capacitance be series at the first H bridge reversible transducer exchanges side and the high frequency
Between the primary side of transformer；The third resonant inductance is parallel to the primary side of the high frequency transformer；
Second resonant element includes the second resonant capacitance and the second resonant inductance；Second resonant capacitance and described
Second resonant inductance is series at the secondary side of the high frequency transformer and exchanging between side for the 2nd H bridge reversible transducer.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
Electric energy router is applied to new-energy grid-connected or on-site elimination system by the application, avoids traditional gird-connected inverter
Industrial Frequency Transformer is at high cost, bulky disadvantage, can guarantee electric energy under grid-connect mode without additional pressure regulation, frequency modulation equipment
Quality；Another aspect electric power energy router contains DC link, can flexibly control input and output voltage, facilitate distribution
The on-site elimination of power supply.
The application use cascaded H-bridges reversible transducer, have many advantages, such as easy modularization, high reliability, low harmony wave, it can be achieved that
High-power, voltage levels transformation of electrical energies.
Two-way DC/DC converter is isolated using mode of resonance in the application, can work in boost mode, can also work and be depressured
Mode can effectively eliminate circulating energy, reduce turn-off power loss, expand soft-switching range, further increase transducer effciency.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the present invention is based on the structural schematic diagrams of the new-energy grid-connected of electric energy router or on-site elimination system；
Fig. 2 is the structural schematic diagram of cascaded H-bridges reversible transducer of the present invention；
Fig. 3 is the structural schematic diagram that two-way DC/DC converter is isolated in mode of resonance of the present invention；
Fig. 4 is the structural schematic diagram that wind-power electricity generation of the present invention accesses electric energy conversion topologies submodule；
Fig. 5 is the structural schematic diagram that photovoltaic power generation of the present invention accesses electric energy conversion topologies submodule；
Fig. 6 is the structural schematic diagram that energy-storage battery of the present invention accesses electric energy conversion topologies module；
Fig. 7 is the structural schematic diagram that DC load of the present invention accesses electric energy conversion topologies module；
Fig. 8 is the structural schematic diagram that AC load of the present invention accesses electric energy conversion topologies module.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is that the present invention is based on the structural schematic diagrams of the new-energy grid-connected of electric energy router or on-site elimination system.Such as Fig. 1
Shown, the new-energy grid-connected or on-site elimination system based on electric energy router includes with flowering structure: AC network, electric energy road
By device and multiple power equipments.Power equipment includes new energy equipment, energy-storage battery equipment and load equipment, new energy equipment packet
Wind power plant and photovoltaic power generation equipment are included, load equipment includes DC load equipment and AC load equipment.
The electric energy router includes the first inductance Ls, cascaded H-bridges reversible transducer and multiple mode of resonance two-way DC/ is isolated
DC converter.The first inductance LsOne end is connected with AC network, and the other end surveys phase with exchanging for cascaded H-bridges reversible transducer
Even, for filtering out high fdrequency component.Multiple H bridge topologys of the cascaded H-bridges reversible transducer are isolated double with multiple mode of resonance
It connects one to one to DC/DC converter, two-way DC/DC converter is isolated with the mode of resonance for the DC side of the H bridge topology
Primary side DC side connection.The secondary side DC side that two-way DC/DC converter is isolated in the mode of resonance forms DC bus, the electricity
Power equipment is connected to the DC bus.The AC network, new energy equipment, energy-storage battery equipment and alternating current-direct current load equipment
Can directly it be connected with electric energy router, wherein AC network, energy-storage battery equipment can not only be used for electric energy in electric energy router
Input source also can be used as the output source of electric energy；Input source of the new energy equipment generally as power supply；Alternating current-direct current load equipment is general
Output source as electric energy.
The electric energy router of the present embodiment further includes multiple electric energy conversion topologies modules, and the power equipment passes through the electricity
Energy conversion topologies module is connected to the DC bus.Different, the class of electric energy conversion topologies module according to the type of power equipment
Type is also different.Corresponding to the type of power equipment, multiple electric energy conversion topologies modules are respectively that new energy access electric energy turns
It is negative to change topography module, energy-storage battery access electric energy conversion topologies module, AC load access electric energy conversion topologies module and direct current
Carry access electric energy conversion topologies module.
The DC output end of the new energy access electric energy conversion topologies module is connected with DC bus, input terminal and new energy
Source device is connected, and the electric energy that new energy access electric energy conversion topologies module can issue new energy equipment is converted to and DC bus
The direct current of identical voltage class；One end of the energy-storage battery access electric energy conversion topologies module is connected with DC bus, separately
One end is connected with energy-storage battery equipment, the electric energy that energy-storage battery access electric energy conversion topologies module can release energy-storage battery equipment
The direct current of voltage class identical as DC bus is converted to, the direct current of voltage class identical as DC bus can also be converted
At electric energy needed for energy-storage battery equipment charge；The direct-flow input end of AC load access electric energy conversion topologies module and straight
It flows bus to be connected, ac output end is connected with the AC load equipment in the load equipment, and AC load accesses electric energy conversion
Alternating current needed for the direct current of voltage class identical as DC bus can be converted AC load by topography module；The direct current is negative
The direct-flow input end for carrying access electric energy conversion topologies module is connected with DC bus, in DC output end and the load equipment
DC load equipment is connected, and DC load accesses electric energy conversion topologies module can be by the direct current of voltage class identical as DC bus
Direct current needed for electricity conversion DC load.
The present embodiment cascade H bridge reversible transducer is connected with AC network, it can be achieved that high-power rectification or inversion；
The mode of resonance be isolated two-way DC/DC converter be connected respectively with H bridge topology each in cascaded H-bridges reversible transducer, it can be achieved that
Primary side switch pipe ZVS Sofe Switch in gamut realizes secondary side diode ZCS Sofe Switch, electricity in deficient resonance and resonance point range
Air bound from and voltage transformation.The DC bus is connected with electric energy conversion topologies module.The new energy equipment, energy-storage battery
, it can be achieved that a variety of distribution type electric energies of different frequency, different voltages grade are converted into power frequency friendship after equipment and load equipment access
Galvanic electricity is connected to the grid or voltage straight-adjustable galvanic electricity is directly to local load supplying, and large capacity energy-storage battery can stabilize new energy
Power swing, peak-frequency regulation and raising power quality are utilized with reaching the high efficient and reliable of new energy.The present invention have high efficiency,
Wide gain, energy can transmitted in both directions, can dynamic regulation power quality the advantages that.
As another embodiment, Fig. 2 is the structural schematic diagram of cascaded H-bridges reversible transducer of the present invention, as shown in Fig. 2, institute
It states cascaded H-bridges reversible transducer to specifically include: multiple H bridge topologys and multiple capacitor Ci(i=1,2 ..., n), multiple H bridge topologys
Exchange side successively cascade, be used to form the output of more level；Multiple H bridge topologys and multiple DC bus capacitors one are a pair of
It answers, the DC side of the H bridge topology is in parallel with the capacitor, for filtering out AC compounent.
As another embodiment, Fig. 3 is the structural schematic diagram that two-way DC/DC converter is isolated in mode of resonance of the present invention, such as Fig. 3
Shown, the mode of resonance is isolated two-way DC/DC converter and is specifically included: the first H bridge reversible transducer, the first resonant element, height
Frequency power transformer, the second resonant element and the 2nd H bridge reversible transducer；The DC side and the H of the first H bridge reversible transducer
The DC side of bridge topology connects, and the exchange side of the first H bridge reversible transducer and the first end of first resonant element connect
Connect, the second end of first resonant element is connect with the primary side of the high frequency transformer, the secondary side of the high frequency transformer with
The first end of second resonant element connects, the second end of second resonant element and the 2nd H bridge reversible transducer
The connection of exchange side, the DC side of the 2nd H bridge reversible transducer forms the DC bus.
First resonant element includes the first resonant inductance Lr1, the first resonant capacitance Cr1With third resonant inductance Lm, institute
Stating the second resonant element includes the second resonant capacitance Cr2With the second resonant inductance Lr2；
The first resonant inductance Lr1With the first resonant capacitance Cr1Be connected in series in high frequency transformer primary side side, and with the first H
The exchange side of bridge reversible transducer is connected；Third resonant inductance LmIt is in parallel with high frequency transformer；Second resonant inductance Lr2With second
Resonant capacitance Cr2It is connected in series in high frequency transformer secondary side, and is connected with the side that exchanges of the 2nd H bridge reversible transducer；Multiple second
The DC side parallel of H bridge reversible transducer together, forms DC bus；DC bus capacitor C is in parallel with DC bus, can filter out
AC compounent.
First resonant inductance Lr1With the first resonant capacitance Cr1The first resonance frequency, the second resonant inductance L can be formedr2With
Two resonant capacitance Cr2The second resonance frequency, third resonant inductance L can be formedmIt can be with the first resonant inductance Lr1, the first resonant capacitance
Cr1Form third resonance frequency, third resonant inductance LmIt can be with the second resonant inductance Lr2, the second resonant capacitance Cr2It is humorous to form the 4th
Vibration frequency.The high frequency transformer no-load voltage ratio is N:1, including winding, iron core, insulation/radiator structure, for realizing electrical isolation and
Voltage class transformation.
New energy equipment includes wind power plant and photovoltaic power generation equipment in the present invention, and corresponding new energy accesses electric energy
Conversion topologies module includes wind-power electricity generation access electric energy conversion topologies submodule and photovoltaic power generation access electric energy conversion topologies submodule
Block.Wind power plant in the new energy equipment accesses electric energy conversion topologies submodule by the wind-power electricity generation and is connected to
The DC bus, the photovoltaic power generation equipment in the new energy equipment pass through photovoltaic power generation and access electric energy conversion topologies submodule
It is connected to the DC bus.
As another embodiment, Fig. 4 is the structural schematic diagram that wind-power electricity generation of the present invention accesses electric energy conversion topologies submodule,
As shown in figure 4, the wind-power electricity generation access electric energy conversion topologies submodule is three-phase full-bridge controlled rectifier, the three-phase bridge
Formula all controlled rectifier circuit includes three-phase H bridge topology and the first filter inductance Lf1, the second filter inductance Lf2, third filter inductance Lf3；
The first end of three filter inductances is connected with wind power plant, and the second end of three filter inductances is respectively at the three-phase H
Bridge topology exchanges side and is connected, and the three-phase H bridge topology DC side is connected with DC bus.
As another embodiment, Fig. 5 is the structural schematic diagram that photovoltaic power generation of the present invention accesses electric energy conversion topologies submodule,
As shown in figure 5, the photovoltaic power generation access electric energy conversion topologies submodule is Boost DC/DC converter, including full-control type is opened
Close device S, sustained diode and inductance L；The one end the inductance L is connected with photovoltaic power generation equipment, the other end and full-controlled switch
Device S collector is connected；The full-controlled switch device S emitter is connected with photovoltaic power generation and DC bus negative terminal respectively；Institute
It states sustained diode anode to be connected with full-controlled switch device S collector, cathode is connected with DC bus anode.
As another embodiment, Fig. 6 is the structural schematic diagram that energy-storage battery of the present invention accesses electric energy conversion topologies module, such as
Shown in Fig. 6, the energy-storage battery access electric energy conversion topologies module is two quadrant DC/DC translation circuits, the two quadrants DC/DC
Translation circuit is opened up including the first full-controlled switch device Sa, the second full-controlled switch device SbWith inductance L；The one end the inductance L with
Energy-storage battery equipment is connected, the other end and the first full-controlled switch device SaEmitter, the second full-controlled switch device SbCollector
It is connected；First full-controlled switch device SaCollector, the second full-controlled switch device SbEmitter respectively with DC bus anode and
Negative terminal is connected.Wherein, the first full-controlled switch device S is controlledaOn-off DC bus can be realized to energy-storage battery equipment charge；
Control the second full-controlled switch device SbOn-off can realize energy-storage battery equipment to DC bus discharge.
As another embodiment, Fig. 7 is the structural schematic diagram that DC load of the present invention accesses electric energy conversion topologies module, such as
Shown in Fig. 7, the DC load access electric energy conversion topologies module is DC/DC converter, and the direct current of the DC/DC converter is defeated
Enter end to be connected with DC bus, DC output end is connected with DC load.Wherein, the part (a) can be used in the DC/DC converter
Shown in Buck DC/DC converter, Cuk DC/DC shown in Boost DC/DC converter, the part (c) shown in the part (b)
Converter or (d) two quadrant DC/DC converter shown in part.
As another embodiment, Fig. 8 is the structural schematic diagram that AC load of the present invention accesses electric energy conversion topologies module, such as
Shown in Fig. 8, the AC load access electric energy conversion topologies module is DC/AC inverter, the DC/AC inverter direct current input
End is connected with DC bus, and ac output end is connected with AC load, wherein the part (a) institute can be used in the DC/AC inverter
The three level T-type structure inverters shown, also can be used single-phase full-bridge inverter shown in the part (b), the part (c) institute also can be used
The three level striding capacitance type inverters shown, also can be used three level neutral-point-clamped type inverter shown in the part (d).
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of new-energy grid-connected or on-site elimination system based on electric energy router characterized by comprising AC network,
Electric energy router and multiple power equipments；
The electric energy router includes that two-way DC/DC transformation is isolated in the first inductance, cascaded H-bridges reversible transducer and multiple mode of resonance
Device；
The cascaded H-bridges reversible transducer includes multiple H bridges topology, the exchange side cascade of multiple H bridge topologys, and passes through described the
One inductance connection is to the AC network；Two-way DC/DC converter one is isolated with multiple mode of resonance in multiple H bridge topologys
One is correspondingly connected with, and the primary side DC side that two-way DC/DC converter is isolated with the mode of resonance for the DC side of the H bridge topology connects
It connects；
The secondary side DC side that two-way DC/DC converter is isolated in the mode of resonance forms DC bus, and the power equipment is connected to
The DC bus；The power equipment includes new energy equipment, energy-storage battery equipment and load equipment.
2. the new-energy grid-connected or on-site elimination system according to claim 1 based on electric energy router, which is characterized in that
The electric energy router further includes multiple electric energy conversion topologies modules；The power equipment passes through the electric energy conversion topologies module
It is connected to the DC bus.
3. the new-energy grid-connected or on-site elimination system according to claim 2 based on electric energy router, which is characterized in that
Multiple electric energy conversion topologies modules are respectively new energy access electric energy conversion topologies module, energy-storage battery access electric energy conversion
Topography module, AC load access electric energy conversion topologies module and DC load access electric energy conversion topologies module；
The new energy equipment accesses electric energy conversion topologies module by the new energy and is connected to the DC bus；
The energy-storage battery access electric energy conversion topologies module is two quadrant DC/DC translation circuits, and the energy-storage battery equipment is logical
It crosses the two quadrants DC/DC translation circuit and is connected to the DC bus；
The AC load access electric energy conversion topologies module is DC/AC inverter, and the AC load in the load equipment is set
It is standby that the DC bus is connected to by the DC/AC inverter；
The DC load access electric energy conversion topologies module is DC/DC converter, and the DC load in the load equipment is set
It is standby that the DC bus is connected to by the DC/DC converter.
4. the new-energy grid-connected or on-site elimination system according to claim 3 based on electric energy router, which is characterized in that
The new energy access electric energy conversion topologies module includes that wind-power electricity generation access electric energy conversion topologies submodule and photovoltaic power generation connect
Enter electric energy conversion topologies submodule；
The wind-power electricity generation accesses electric energy conversion topologies submodule for three-phase full-bridge controlled rectifier, in the new energy equipment
Wind power plant the DC bus is connected to by the three-phase full-bridge controlled rectifier；
The photovoltaic power generation accesses electric energy conversion topologies submodule for Boost DC/DC converter, in the new energy equipment
Photovoltaic power generation equipment is connected to the DC bus by the Boost DC/DC converter.
5. the new-energy grid-connected or on-site elimination system according to claim 3 based on electric energy router, which is characterized in that
The two quadrants DC/DC translation circuit specifically includes: the first full-controlled switch device, the second full-controlled switch device and the second electricity
Sense；
The first end of second inductance is connected with the energy-storage battery, the emitter of first full-controlled switch device, institute
The collector for stating the second full-controlled switch device is connected with the second end of second inductance；The first full-controlled switch device
The collector of part, second full-controlled switch device emitter be connected respectively with the DC bus anode and negative terminal.
6. the new-energy grid-connected or on-site elimination system according to claim 3 based on electric energy router, which is characterized in that
The DC/DC converter is Buck DC/DC converter, Boost DC/DC converter, Cuk DC/DC converter or two quadrants
DC/DC converter.
7. the new-energy grid-connected or on-site elimination system according to claim 1 based on electric energy router, which is characterized in that
The cascaded H-bridges reversible transducer specifically includes: multiple H bridge topologys and multiple capacitors；
The exchange side cascade of multiple H bridge topologys is used to form more level outputs；
Multiple H bridge topologys and multiple DC bus capacitors correspond, the DC side and the capacitor of the H bridge topology
Parallel connection, for filtering out AC compounent.
8. the new-energy grid-connected or on-site elimination system according to claim 1 based on electric energy router, which is characterized in that
The mode of resonance is isolated two-way DC/DC converter and is specifically included: the first H bridge reversible transducer, the first resonant element, high frequency transformation
Device, the second resonant element and the 2nd H bridge reversible transducer；
The DC side of the first H bridge reversible transducer is connect with the DC side of the H bridge topology, the two-way change of the first H bridge
The exchange side of parallel operation is connect with the first end of first resonant element, the second end of first resonant element and the high frequency
The primary side of transformer connects, and the secondary side of the high frequency transformer is connect with the first end of second resonant element, and described second
The second end of resonant element is connect with the exchange side of the 2nd H bridge reversible transducer, the 2nd H bridge reversible transducer it is straight
Stream side forms the DC bus.
9. according to the new-energy grid-connected according to claim 8 based on electric energy router or on-site elimination system, feature
It is, first resonant element includes the first resonant inductance, the first resonant capacitance and third resonant inductance；First resonance
Inductance is series at the original for exchanging side Yu the high frequency transformer of the first H bridge reversible transducer with first resonant capacitance
Between side；The third resonant inductance is parallel to the primary side of the high frequency transformer；
Second resonant element includes the second resonant capacitance and the second resonant inductance；Second resonant capacitance and described second
Resonant inductance is series at the secondary side of the high frequency transformer and exchanging between side for the 2nd H bridge reversible transducer.
Priority Applications (1)
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