CN209516643U - It can source router - Google Patents
It can source router Download PDFInfo
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- CN209516643U CN209516643U CN201920265684.6U CN201920265684U CN209516643U CN 209516643 U CN209516643 U CN 209516643U CN 201920265684 U CN201920265684 U CN 201920265684U CN 209516643 U CN209516643 U CN 209516643U
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model provides a kind of energy source router, it include: low-voltage direct bus and high voltage dc bus, using bidirectional voltage boosting/buck converter connection between low-voltage direct bus and high voltage dc bus, low-voltage direct bus connects photovoltaic using unidirectional booster converter, and low-voltage direct bus connects energy storage using bidirectional voltage boosting/buck converter；High voltage dc bus connects AC network using grid-side converter；Multiple on-load switches are additionally provided between low-voltage direct bus and high voltage dc bus, on-load switch is oriented to low-voltage direct bus or high voltage dc bus according to the load closure switch of connection load.Load can be realized to the power demand of different voltages grade by the energy source router of double DC bus, simultaneously, it realizes the low-voltage network that low pressure distributed generation resource has buffering to access, realizes the influence reduced to the greatest extent while making full use of distributed generation resource renewable energy to traditional low-voltage network；The ability to emergency event is improved, mutual backup in short-term is played the role of.
Description
Technical field
The utility model relates to energy technology fields, more particularly to a kind of energy source router.
Background technique
Energy internet is a kind of energy peer switch for being able to achieve energy in bidirectional flow and shared network, energy source router
It is the key equipment of energy internet, is the important technology for realizing energy exchange in energy internet, new energy and load access
Means.
However, existing energy source router uses single bus structure, the energy source router of single bus structure is used to hold
It is frequent to easily lead to busbar voltage fluctuation, is affected to power grid port, load ports.
Utility model content
In view of the foregoing deficiencies of prior art, it the purpose of this utility model is to provide a kind of energy source router, uses
Because busbar voltage fluctuation frequently has power grid and load in solution in the prior art the energy source router of single bus structure
The problem of larger impact.
In order to achieve the above objects and other related objects, the utility model provides a kind of energy source router, comprising:
Low-voltage direct bus and high voltage dc bus, using two-way between the low-voltage direct bus and high voltage dc bus
The connection of step-up/down converter, the low-voltage direct bus connect photovoltaic using unidirectional booster converter, and the low-voltage direct is female
Line connects energy storage using bidirectional voltage boosting/buck converter；The high voltage dc bus connects AC network using grid-side converter；
Multiple on-load switches are additionally provided between the low-voltage direct bus and high voltage dc bus, the on-load switch is loaded according to connection
Load closure switch guiding low-voltage direct bus or high voltage dc bus
In an embodiment of the utility model, voltage changer is connected between the load and on-load switch.
In an embodiment of the utility model, when the load is AC load, the voltage changer is DC/AC
Converter；When the load is DC load, the voltage changer is DC/DC converter.
In an embodiment of the utility model, using unidirectional booster converter be connected to the blower of low-voltage direct bus with
Gas turbine.
In an embodiment of the utility model, the energy source router further include: in multiple energy source routers
The electrical power trans mission/distribution system that high voltage dc bus is all connected with.
In an embodiment of the utility model, the energy source router further include: in multiple energy source routers
The control centre that low-voltage direct bus is all connected with.
In an embodiment of the utility model, the both ends of the on-load switch are correspondingly connected with high voltage dc bus, low pressure
The control terminal of DC bus, the on-load switch connects load.
In an embodiment of the utility model, the energy source router further include: high-voltage alternating interface, the high pressure are handed over
The side of stream interface connects the high voltage dc bus, and the other side connects high-voltage alternating net.
In an embodiment of the utility model, the energy source router further include: low-voltage alternating-current interface, the low pressure are handed over
The side of stream interface connects the low-voltage direct bus, and the other side connects low-voltage alternating-current net.
In an embodiment of the utility model, the energy source router further include: DC interface, the DC interface one
Side connects the high voltage dc bus or low-voltage direct bus, and the other side connects direct current net.
As described above, the energy source router of the utility model, has the advantages that
For single bus, the energy source router designed by double DC bus can realize load to different voltages etc.
The power demand of grade, meanwhile, realize the low-voltage network that low pressure distributed generation resource has buffering to access, realization makes full use of distribution
Reduce the influence to traditional low-voltage network while power supply renewable energy to the greatest extent；In addition, under double DC bus structures,
The ability to emergency event is improved, mutual backup in short-term is played the role of.
Detailed description of the invention
Fig. 1 is shown as a kind of energy router topology schematic diagram provided by the utility model；
Fig. 2 is shown as two-way Buck/Boost converter topology figure in a kind of energy source router provided by the utility model；
Fig. 3 is shown as two-way Buck/Boost convertor controls signal in a kind of energy source router provided by the utility model
Figure；
Fig. 4 be shown as it is provided by the utility model it is a kind of can in source router and net side AC/DC converter topology structure and
Control figure；
Fig. 5 is shown as accumulator cell charging and discharging control figure in a kind of energy source router provided by the utility model；
Fig. 6 is shown as the sagging control coordinated control figure of DC bus in a kind of energy source router provided by the utility model.
Specific embodiment
Illustrate the embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and effect of the utility model easily.The utility model can also be by addition
Different specific embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints and answer
With carrying out various modifications or alterations under the spirit without departing from the utility model.It should be noted that the case where not conflicting
Under, the feature in following embodiment and embodiment can be combined with each other.
It should be noted that diagram provided in following embodiment only illustrates the basic of the utility model in a schematic way
Conception, only shown in schema then with related component in the utility model rather than component count when according to actual implementation, shape
And size is drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout
Kenel may also be increasingly complex.
Referring to Fig. 1, providing a kind of energy router topology schematic diagram for the utility model, comprising:
Low-voltage direct bus and high voltage dc bus, using two-way between the low-voltage direct bus and high voltage dc bus
The connection of step-up/down converter, the low-voltage direct bus connect light using unidirectional booster converter (unidirectional Boost)
Volt, the low-voltage direct bus connect energy storage using bidirectional voltage boosting/buck converter (two-way Boost/Buck converter)；It is described
High voltage dc bus connects AC network using grid-side converter (AC/DC converter)；The low-voltage direct bus and high straightening
It is additionally provided with multiple on-load switches (on-load switch can be single-pole double throw) between stream bus, the on-load switch is according to connection load
(both ends of the on-load switch are correspondingly connected with high voltage direct current for load closure switch guiding low-voltage direct bus or high voltage dc bus
The control terminal of bus, low-voltage direct bus, the on-load switch connects load, that is, is oriented to low pressure according to load closure control terminal
DC bus or high voltage dc bus).
Wherein, voltage changer is connected between the load and on-load switch；When the load is AC load, institute
Stating voltage changer is DC/AC converter；When the load is DC load, the voltage changer is DC/DC converter；
For example, DC bus is connected by DC/DC converter when load is electric car, and by there is low-pressure direct in this present embodiment
Bus and high voltage dc bus are flowed, its closure is made according to voltage Auto-matching (or, manually adjusting) on-load switch of electric car
To a wherein bus, the charging process of electric car is completed.
In Fig. 1, low-voltage direct bus 1 can not only meet the access that facilitates of distributed generation resource or energy-storage system, but also
Play the role of energy snubber, by the cooperation of photovoltaic and energy-storage system, can be effectively relieved at low-voltage direct bus 1 because load becomes
Change, voltage fluctuation caused by the variation of photovoltaic power output, improves power supply quality.High voltage dc bus 2 with bulk power grid by being connected
It connects, can ensure the safe and reliable of electric energy supply.Two DC bus systems are connected by two-way Buck/Boost converter, when
When the primary fourth of the working voltage of low-voltage direct bus-bar system is more than permissible value, extra electric energy is incorporated to high voltage direct current mother by reversible transducer
Linear system system, conversely, the vacancy of low-voltage direct bus-bar system power is supplemented by this two-way DC/DC converter, and high voltage direct current is female
The voltage stabilization of linear system system is controlled by grid-side converter, and two DC bus systems steadily power by phase load.
In low-voltage direct bus operational process, it may go out because the fuctuation within a narrow range of illumination or temperature influences photovoltaic system
Power, but the voltage fuctuation within a narrow range of low-voltage direct bus on load port substantially without influence, the two-way DC/DC of lockable bus becomes at this time
The fluctuation of low-voltage direct bus is limited in a small range by parallel operation, is reduced distributed generation resource and is gone out fluctuation to traditional bulk power grid
Impact；Consider there may be schedulable load in system from now on simultaneously, load side also needs automatic select according to realization operation
DC bus system is selected, realizes differentiation power supply and electricity consumption.And in Fig. 1, photovoltaic (system) in view of photovoltaic power generation by temperature,
The influence of the factors such as illumination, photovoltaic output voltage have very big fluctuation, and this system uses unidirectional Boost chopper circuit by photovoltaic
The output transform of component at low-voltage direct bus voltage.The photovoltaic module of access can be considered voltage relative to Boost
Source, the other parts for being connected to DC bus are equivalent to load.Photovoltaic electric energy is utilized for maximal efficiency, photovoltaic system is run on most
Under high-power tracing mode；When photovoltaic system and energy storage are used cooperatively, it can remain jointly low by the charge and discharge control of energy storage
Press DC bus system stable operation.
Key components of the energy storage (system) as energy energy router interior, it is each for energy router interior
The case where matching of realtime power existing for port has fluctuation plays critically important effect, and being can source router realization energy routing
Key equipment, can be realized the temporary storage of energy, this also just to further realize energy redistribution provides hardware foundation.
To maintain low-voltage direct busbar voltage to stablize, energy-storage system is accessed, energy-storage system is chosen two-way Buck/Boost converter, such as schemed
Shown in 2, two-way Buck/Boost converter topology structure is chosen for energy-storage system；As shown in figure 3, becoming for two-way Buck/Boost
The control figure of parallel operation.From the figure 3, it may be seen that UdcFor the output voltage of two-way DC/DC converter, it and reference voltage Udcref(low-pressure direct
Flow bus-bar system 1 ideal working voltage) error signal after PI is adjusted, the current reference signal I of generationbrefWith battery
Export electric current IbIt is adjusted after making difference through PI and pulse width modulates (pulsewidthmodulation, PWM), generate switch letter
Number.As output end voltage UdcLess than reference voltage UdcrefWhen, switch S1 movement, two-way DC/DC converter is boosting shape at this time
State；Conversely, switch S2 is acted, two-way DC/DC converter is decompression state, finally reaches steady-state operation.
When steady-state operation, the input of two-way DC/DC converter and output voltage meet:
Ub=D2Udc(Buck) (2)
In formula (1), formula (2): UbIt is accumulator voltage；UdcIt is low-voltage bus bar working voltage；D1、D2It is DC/DC transformation
The duty ratio of device circuit.
And the operating mode of net side AC/DC converter
And net side AC/DC current transformer may operate according to the difference of 2 system power direction of transfer of high voltage dc bus it is whole
Stream mode or inverter mode.The situation that is incorporated into the power networks is considered in the present embodiment, mainly provides high voltage dc bus by AC/DC current transformer
Voltage, the voltage stabilization operation of control 2 system of high voltage dc bus.Using two close cycles PI control strategy, wherein outer voltage is real
Existing 2 voltage stabilization of DC bus, current inner loop use Direct Current Control, to control the power factor of converter and improve dynamic
State responding ability.
When energy source router is incorporated into the power networks, energy router interior topological structure is similar with DC micro-electric web frame, two-way
The power flow direction of AC/DC converter only by high voltage dc bus side busbar voltage height determine, as shown in Figure 4.When high straightening
The workload demand of stream 2 system of bus reduces suddenly when leading to DC side power surplus, at this time due to the absorption of DC bus lateral capacitance
Extra electric energy leads to Udc1It increases, value is deviated with target voltage values, and output is negative.After PI is adjusted, output valve Id *
For negative value, original is the I of positive valuedReference value I is followed under the action of PI is adjustedd *Variation.Work as IdAfter becoming negative value, DC side
Extra electric energy is by AC/DC inversion to exchange side, and the voltage of DC bus side is restored to steady-state value at this time.Similarly, work as high pressure
The workload demand of 2 system of DC bus increases suddenly when leading to DC side shortage of power, and analytic process is similar, until reaching
To DC voltage steady-state value.
The topological structure that DC B uck/Boost bus connects converter is similar with energy storage Buck/Boost converter, makees
With being: when 1 voltage value of low-voltage direct bus deviates setting value, and the regulating power of 1 system of low-voltage direct bus has reached limit
System can not continue to guarantee that 1 voltage of low-voltage direct bus is maintained near steady-state value, connect Buck/Boost by bus at this time and become
Parallel operation gives secondary adjustment, and 1 voltage value of low-voltage bus bar is made to be restored to setting value or support 1 voltage of low-voltage direct bus to a certain
Near steady-state value.Again when low pressure light-preserved system restores regulating power and working voltage meets low-voltage direct 1 system requirements of bus
It is latched this converter.It is played the role of, and on the one hand guarantees the stability of low-voltage direct-current system renewable energy power output indirectly,
Guarantee 1 system stable operation of low-voltage direct bus, on the other hand also reduces when 1 system of low-voltage bus bar operates normally because voltage is small
The dynamic influence to 2 system of high voltage dc bus (connecting traditional bulk power grid) of amplitude wave.
Coordination strategy-working pattern analysis of energy source router operation
Energy source router can be contributed and the load power size at connect DC bus 1 by real-time monitoring photovoltaic, and according to
Size is fluctuated according to DC bus-bar voltage, determines that photovoltaic power output mode, accumulator cell charging and discharging mode, DC B uck/Boost bus connect
Connect converter action mode and user terminal power supply routing.Regard DC bus as a node, does not consider internal component
Power loss.When its voltage stabilization, the power at generate electricity end and electricity consumption end keeps balance, but in view of bus capacitor in system and
The speed of the limitation of accumulator cell charging and discharging size of current, system input-output power can only be run within a certain range.With regard to a certain
For moment, the power at generate electricity end and electricity consumption end may not be able to be exactly matched, and power existing for inside is not when system is run at this time
Equilibrium fluctuations are unified to be indicated with Pc.
PpvΔ t=PcΔt+P0Δt (3)
Δ t=t2-t1 (5)
In formula: PpvFor low-voltage direct bus-bar system photovoltaic input power；P0For low-voltage direct bus load output power；Pc
For the input-output power deviation at low-voltage direct bus a certain moment；Ubus1For bus t1Moment voltage value；Ubus2For bus t2When
Carve voltage value；Δ t is t when system is run2Moment and t1The difference at moment；C is low-voltage direct bus capacitor.
Have above-mentioned formula (3) and (4) available:
Wherein, known to formula (6):
(1)Ppv< P0When, Ubus2< Ubus1, busbar voltage decline；
(2)Ppv> P0When, Ubus2> Ubus1, busbar voltage rising；
(3)Ppv=P0When, Ubus2=Ubus1, busbar voltage is constant.
When photovoltaic output power consumes power greater than the load at DC bus 1, battery uses the sagging control of voltage
Charging；If a certain moment, to when setting peak 0.8, battery stops the state-of-charge (stateofcharge, SOC) of battery
Only charge.During running herein, if the movement that busbar voltage fluctuation is greater than DC B uck/Boost bus connection converter occurs
When threshold value, DC B uck/Boost bus connects converter and opens, using the Boost mode electric energy that low-voltage bus bar system is extra
It is incorporated into high voltage dc bus system, and is adjusted by the port power grid AC/DC；When low-voltage bus bar voltage fluctuation is less than movement
When threshold value, DC B uck/Boost bus connects converter and closes.
When photovoltaic output power consumes power less than the load at DC bus 1, battery uses the sagging control of voltage
Electric discharge；If a certain moment, when the SOC of battery reaches setting minimum 0.2, battery stops electric discharge.During running herein, if
When movement threshold value of the busbar voltage fluctuation greater than DC B uck/Boost bus connection converter occurs, DC B uck/Boost is female
Line connects converter and opens, and maintains low-voltage bus bar electric jointly by high voltage bus system and low pressure light-preserved system using Buck mode
Pressure；When low-voltage bus bar voltage fluctuation is less than movement threshold value, DC B uck/Boost bus connects converter and closes.Meanwhile energy
Source router specifically can need to set bus selection switch motion according to user terminal, i.e. load ports are selected by respective rule
Select the power supply source of oneself: when photovoltaic input power be greater than DC bus 1 at load output power when, at DC bus 2
Controllable burden is switched to DC bus 1；When photovoltaic input power be less than DC bus 1 at load output power when, by direct current
Controllable burden is switched to DC bus 2 at bus 1.
It can source router energy compatibility control strategy-high voltage dc bus control strategy
The voltage stabilization of 2 system of DC bus mainly passes through grid-connected port AC/DC converter and is controlled, while high-low pressure
Give that adjustment is isolated indirectly using two-way Buck/Boost converter between DC bus, it is possible thereby to guarantee the low of busbar voltage
Fluctuation.This have the advantage that: when high voltage bus accesses multiple DC/DC load ports, for each load port
It is equivalent to input side high voltage direct current port voltage approximately constant, outlet side need to only guarantee the guarantee when load is there is a situation where fluctuating
Load port voltage stabilization.This requirement can be realized by the PWM modulation of DC/DC converter, thus accomplish energy road
By the plug and play of device, port is also more general.
Low-voltage direct bus control strategy
The voltage stabilization of 1 system of DC bus is adjusted jointly by light-preserved system and two-way Buck/Boost converter, is protected
User terminal is demonstrate,proved to require the supply of stablizing of distribution type renewable energy.In the control to battery, filling for battery is set
Electric discharge threshold end voltage is Ud.By detecting bus voltage signal, the charging and discharging currents signal of battery is given, this control is
One electric current monocycle control, so the realization of control is fairly simple.
In the charge and discharge control of battery, busbar voltage is set as Udref, when busbar voltage is less than UdrefWhen, it controls defeated
Electric current is positive out, indicates that battery is released energy as power supply to improve busbar voltage；As busbar voltage high pressure UdrefWhen, control
Output electric current is negative, and indicates that battery reduces busbar voltage as load absorption energy.Such control method realizes storage
Battery is according to busbar voltage automatically charge and discharge, it is contemplated that the fluctuation of low-voltage direct-current system, it is desirable to reduce energy-storage system charge and discharge
The frequent switching of power mode, method are to increase offline (not working) working region of battery, as shown in Figure 5.Known by Fig. 5, when
Battery working voltage is lower than setting voltage U2When lower limit, battery carries out I electric discharge electric discharge with constant current value；When battery is transported
Row voltage high pressure sets voltage U1When the upper limit, battery is charged with constant current value I；When battery working voltage exists
(U between setting value2< Udc< U1) when, battery carries out charge and discharge in a manner of sagging, and busbar voltage is maintained to stablize.
The control electric current of battery may be expressed as: Idc=K (Ud± Δ U-Udcref)(7)
In formula (7): K is sagging coefficient；In ± Δ U, Δ U indicates offline area, takes "+" number greater than load voltage value, small
"-" number is taken in load voltage value.
The difference of busbar voltage and given voltage at section [- Δ U ,+Δ U], battery-operated in offline area, other
Region is the charge-discharge region of battery.Wherein, the setting initial SOC of battery is 0.5, and the SOC working range of battery is 0.2
~0.8.When more than 0.8, stops charging, discharge operation can only be carried out；When being lower than 0.2, stops electric discharge, can only be filled
It is electrically operated.
The method is applied in the control of DC B uck/Boost bus connection converter, it can be reasonable by being arranged
Voltage threshold and sagging coefficient, and converter is connect with DC B uck/Boost bus by battery Buck/Boost converter
Coordinated operation, 1 system stable operation of common guarantee low-voltage direct bus.The threshold value setting that DC bus-bar voltage falls and is lifted
Must be accurate: threshold value setting be too low, and system may be due to the mistake switching of sampling error and external disturbance generation operating mode；Threshold
Value setting is too high, and DC bus-bar voltage transformation range can be made too big, reduces the work effect of system run all right and converter
Rate.The coordinated control of the two is as shown in Figure 6.In Fig. 6, Ks is the sagging coefficient that DC B uck/Boost bus connects converter,
Kb is the sagging coefficient of battery Buck/Boost circuit.
It will be appreciated from fig. 6 that in low-voltage bus bar system battery operation interval are as follows:
Work as UdcWhen > 310V, battery carries out constant-current charge；As 305V < UdcWhen≤310V, battery is filled using sagging
Electric mode；As 295V < UdcWhen≤305V, battery does not work at this time, is in off-line state；As 290V < UdcWhen≤295V,
Battery uses sagging discharge mode；Work as UdcWhen≤290V, battery carries out constant-current discharge.
Similarly, the operation interval of double DC bus Buck/Boost converters are as follows: work as UdcWhen > 340V, bus converter into
Row constant-current charge；As 310V < UdcWhen≤340V, bus converter uses sagging charging modes；As 290V < UdcWhen≤310V,
Bus converter does not work at this time, is in off-line state；As 260V < UdcWhen≤290V, bus converter uses sagging electric discharge side
Formula；Work as UdcWhen≤260V, bus converter carries out constant current and puts.
The case where there are fluctuations for load-side, energy source router should be able to be responded actively, adjust electric energy road in time
By device to the power supply source of load, meet the stabilization power demand of load.On-load switch is by judging that load powers source (preferentially
Grade index and voltage deviation index), when emergent power deviation, energy source router can return side switchable load according to default
Power supply.
In addition, in the present embodiment, low-voltage direct bus can also connect blower, combustion gas wheel by unidirectional booster converter
Machine realizes power supply or energy storage；Using the structure of above-mentioned energy source router, transmission & distribution are cascaded to using the side of multiple energy source routers
Electric system, the other side of multiple energy source routers connect control centre, and control centre deploys the electricity between multiple energy source routers
Can, energy source is rationally adjusted according to the dispatch command of control centre.
Except above-described embodiment, the energy source router further include:
High-voltage alternating interface, the side of the high-voltage alternating interface connect the high voltage dc bus, and other side connection is high
Press AC network.
Low-voltage alternating-current interface, the side of the low-voltage alternating-current interface connect the low-voltage direct bus, and other side connection is low
Press AC network.
DC interface, the DC interface side connect the high voltage dc bus or low-voltage direct bus, and the other side connects
Connect direct current net.
Above-mentioned energy source router, connects high pressure, low-pressure direct with low-voltage alternating-current interface by DC interface, high-voltage alternating interface
Bus is flowed, DC interface is used for for the energy exchange between electrical equipment in direct current net or direct current net, high-voltage alternating interface
With the energy exchange in high-voltage alternating net or high-voltage alternating net between electrical equipment, low-voltage alternating-current interface is used for and low-voltage alternating-current net
Or the energy exchange in low-voltage alternating-current net between electrical equipment, electricity interface function is more, and modular construction is convenient for extension, the energy
Router functionality is strong.
In conclusion the utility model is compared to for single bus, the energy source router designed by double DC bus can
Realize the power demand loaded to different voltages grade, meanwhile, realize the low-voltage distribution that low pressure distributed generation resource has buffering to access
Net realizes the influence reduced to the greatest extent while making full use of distributed generation resource renewable energy to traditional low-voltage network；Separately
Outside, under double DC bus structures, improve to emergency event (photovoltaic module power output decline to a great extent or low-voltage distribution net side occur
Failure causes to have a power failure in short-term) ability, play the role of mutual backup in short-term.So the utility model effectively overcome it is existing
Various shortcoming in technology and have high industrial utilization value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (10)
1. a kind of energy source router characterized by comprising low-voltage direct bus and high voltage dc bus, the low-voltage direct
Using bidirectional voltage boosting/buck converter connection between bus and high voltage dc bus, the low-voltage direct bus is risen using unidirectional
Buckling parallel operation connects photovoltaic, and the low-voltage direct bus connects energy storage using bidirectional voltage boosting/buck converter；The high voltage direct current
Bus connects AC network using grid-side converter；It is additionally provided between the low-voltage direct bus and high voltage dc bus multiple negative
Lotus switch, the on-load switch are oriented to low-voltage direct bus or high voltage dc bus according to the load closure switch of connection load.
2. energy source router according to claim 1, which is characterized in that be connected with electricity between the load and on-load switch
Buckling parallel operation.
3. energy source router according to claim 2, which is characterized in that when the load is AC load, the electricity
Buckling parallel operation is DC/AC converter；When the load is DC load, the voltage changer is DC/DC converter.
4. energy source router according to claim 1, which is characterized in that further include: it is connected using unidirectional booster converter
In the blower and gas turbine of low-voltage direct bus.
5. energy source router according to claim 1, which is characterized in that further include: in multiple energy source routers
The electrical power trans mission/distribution system that high voltage dc bus is all connected with.
6. energy source router according to claim 1, which is characterized in that further include: in multiple energy source routers
The control centre that low-voltage direct bus is all connected with.
7. energy source router according to any one of claim 1 to 6, which is characterized in that the both ends of the on-load switch
It is correspondingly connected with high voltage dc bus, low-voltage direct bus, the control terminal of the on-load switch connects load.
8. energy source router according to any one of claim 1 to 6, which is characterized in that further include: high-voltage alternating connects
Mouthful, the side of the high-voltage alternating interface connects the high voltage dc bus, and the other side connects high-voltage alternating net.
9. energy source router according to any one of claim 1 to 6, which is characterized in that further include: low-voltage alternating-current connects
Mouthful, the side of the low-voltage alternating-current interface connects the low-voltage direct bus, and the other side connects low-voltage alternating-current net.
10. energy source router according to any one of claim 1 to 6, which is characterized in that further include: DC interface, institute
It states DC interface side and connects the high voltage dc bus or low-voltage direct bus, the other side connects direct current net.
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|---|---|---|---|
| CN201920265684.6U CN209516643U (en) | 2019-03-01 | 2019-03-01 | It can source router |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920265684.6U CN209516643U (en) | 2019-03-01 | 2019-03-01 | It can source router |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525827A (en) * | 2020-04-16 | 2020-08-11 | 深圳市鹏源电子有限公司 | Energy routing system |
| CN112994157A (en) * | 2021-03-01 | 2021-06-18 | 株洲中车时代电气股份有限公司 | Self-adaptive bidirectional DCDC (direct current) charge and discharge control method and device |
| CN113014196A (en) * | 2021-03-12 | 2021-06-22 | 中国电子科技集团公司第十八研究所 | Unmanned aerial vehicle energy management system topological structure |
| CN116914822A (en) * | 2023-06-21 | 2023-10-20 | 暨南大学 | Multi-port converter circuit, device and control method for new energy storage integration grid connection |
| TWI819255B (en) * | 2019-12-03 | 2023-10-21 | 日商古河電氣工業股份有限公司 | Electric power network and methods of changing the power network |
| CN117955427A (en) * | 2024-02-01 | 2024-04-30 | 中科智寰(北京)科技有限公司 | Low-voltage output direct-current electric energy router and photovoltaic access power supply system |
-
2019
- 2019-03-01 CN CN201920265684.6U patent/CN209516643U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI819255B (en) * | 2019-12-03 | 2023-10-21 | 日商古河電氣工業股份有限公司 | Electric power network and methods of changing the power network |
| CN111525827A (en) * | 2020-04-16 | 2020-08-11 | 深圳市鹏源电子有限公司 | Energy routing system |
| CN111525827B (en) * | 2020-04-16 | 2022-12-13 | 深圳市鹏源电子有限公司 | Energy routing system |
| CN112994157A (en) * | 2021-03-01 | 2021-06-18 | 株洲中车时代电气股份有限公司 | Self-adaptive bidirectional DCDC (direct current) charge and discharge control method and device |
| CN113014196A (en) * | 2021-03-12 | 2021-06-22 | 中国电子科技集团公司第十八研究所 | Unmanned aerial vehicle energy management system topological structure |
| CN116914822A (en) * | 2023-06-21 | 2023-10-20 | 暨南大学 | Multi-port converter circuit, device and control method for new energy storage integration grid connection |
| CN117955427A (en) * | 2024-02-01 | 2024-04-30 | 中科智寰(北京)科技有限公司 | Low-voltage output direct-current electric energy router and photovoltaic access power supply system |
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