CN106208181A - Dual-port energy storage system and control method thereof - Google Patents
Dual-port energy storage system and control method thereof Download PDFInfo
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- CN106208181A CN106208181A CN201510411344.6A CN201510411344A CN106208181A CN 106208181 A CN106208181 A CN 106208181A CN 201510411344 A CN201510411344 A CN 201510411344A CN 106208181 A CN106208181 A CN 106208181A
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Abstract
The invention provides a dual-port energy storage system and a control method thereof. The dual-port energy storage system provides various levels of power supply quality through the first and second ac ports using operation of the first, second, third, and fourth switches. The dual-port energy storage system has the advantage of improving the quality of various electric powers flexibly supplied by the common energy storage system, and in addition, the dual-port energy storage system provides the dual alternating current ports so as to avoid the configuration of two common energy storage systems, thereby having the advantage of simplifying the overall structure.
Description
Technical field
The present invention is about a kind of dual-port energy storage system and control method thereof；Double especially with regard to one tool
The energy storage system of AC port and control method thereof, it can the various power quality of elastic supply and simplify whole
Body constructs.
Background technology
Fig. 1 discloses conventional energy storage system and carries out storing the configuration diagram of electric energy.Refer to shown in Fig. 1,
Conventional energy storage system 1 mainly comprises two-way power conversion circuit 11 and an apparatus for storing electrical energy 12.
Bi-directional electric power change-over circuit 11 has an AC and a DC side, the exchange of bi-directional electric power change-over circuit 11
Side one alternating-current switch 14 is connected to a mains supply 10, and the DC side of bi-directional electric power change-over circuit 11 is even
Being connected to apparatus for storing electrical energy 12, the AC of bi-directional electric power change-over circuit 11 separately connects a load 13.
Referring again to shown in Fig. 1, when mains supply 10 is normal, and at mains supply 10 from the peak period
Period, may select and alternating-current switch 14 is operated into Guan Bi (close).So, by the friendship of mains supply 10
Stream electric energy is converted into direct current energy through bi-directional electric power change-over circuit 11, and the input of this direct current energy is stored in
Apparatus for storing electrical energy 12, as shown in the lower dotted line of Fig. 1 and the direction of arrow.Apparatus for storing electrical energy 12 comprises number
Individual accumulator or other DC source.When apparatus for storing electrical energy 12 completes charging, select mains supply
The electric power of 10 stops input to apparatus for storing electrical energy 12.It addition, the electric power of mains supply 10 selects supply extremely
Load 13, as shown in the upper dotted line of Fig. 1 and the direction of arrow.
Fig. 2 discloses conventional energy storage system and carries out discharging the configuration diagram of electric energy when civil power is normal, its
Energy storage system corresponding to Fig. 1.Refer to shown in Fig. 2, when mains supply 10 is normal, and
During the spike period of mains supply 10, may select and alternating-current switch 14 is operated into Guan Bi, by mains supply
10 supply power to loads 13, as shown in the upper dotted line of Fig. 2 and the direction of arrow.It addition, conventional energy
Apparatus for storing electrical energy 12 is carried out operation release by stocking system, and it stores electric energy, will apparatus for storing electrical energy 12
Direct current energy be converted into AC energy via bi-directional electric power change-over circuit 11, in order to supply power to load 13,
As shown in the upper dotted line of Fig. 2 and the direction of arrow, to reach a part of electric power of load 13 by storing electricity from peak
The purpose of power supply.
Fig. 3 discloses conventional energy storage system and carries out discharging the configuration diagram of electric energy when city's electrical anomaly, its
Release energy state corresponding to the energy storage system of Fig. 2.Refer to shown in Fig. 3, when mains supply 10
When there is exception or fault, alternating-current switch 14 selects to operate into disconnection (open), i.e. disconnects mains supply
10.Now, apparatus for storing electrical energy 12 is only carried out operation release by conventional energy storage system, and it stores electric energy,
The direct current energy of apparatus for storing electrical energy 12 is converted into AC energy via bi-directional electric power change-over circuit 11, and
Supply power to load 13, as shown in the dotted line of Fig. 2 and the direction of arrow, supplied by apparatus for storing electrical energy 12 i.e. completely
13 required electric powers should be loaded.
For example, another conventional energy storage system, such as No. 7911187 " Energy of U.S. Patent No.
Storage system " patent, it discloses a kind of energy storage system and comprises a battery charger (battery
Charger) and several energy accumulating device.This charger is connected to one direct current-ac current source (DC-AC
Current source), this energy accumulating device be coupled respectively to battery charger and several subsystem (
Subsystem) between.Each energy accumulating device comprises a magnetocapacitance (magnetic capacitor, MCAP
) and an overcurrent protection (over current protection device, OCPD).This magnetocapacitance by
Battery charger is charged, and is supplied power to subsystem by magnetocapacitance, and this subsystem is connected to magnetoelectricity
Hold.Overcurrent protection is detectd side and is flow to the electric current of subsystem from magnetocapacitance, to avoid overcurrent.
Another conventional energy storage system, as United States Patent (USP) discloses No. 20100327806 " Monitoring
Cells in energy storage system " patent application case, it discloses a kind of energy storage system and comprises one
Battery monitoring system, and this energy storage system is made up of several battery cells in series.This battery monitoring system
Comprising several monitor, its series connection forms a catena, and it monitors including at least one first monitor and one second
Device.First monitor is in order to monitor at least one first battery unit of this energy storage system, to produce first
Monitoring materials.Second monitor in order to monitor at least one second battery unit at this energy storage system, with
Produce the second monitoring materials.First monitor is in order to be transferred to the second monitor by the first monitoring materials, in order to
Transmission is to a controller.
Another conventional energy storage system, as United States Patent (USP) discloses No. 20110296218 " Battery
Management system, method of controlling the same, and energy storage system
Including the battery management system " patent application case, it discloses a kind of energy storage
System comprises a battery management system (BMS), and it is powered with power save mode, to reduce the electricity charge.
But, conventional energy storage system only provides the function having single AC port, and it does not provide tool double
The function of AC port, the most conventional energy storage system is restricted and the use that lacks flexibility on using.
Therefore, conventional energy storage system certainly exists and improves its unitary construction and the need of method of controlling operation thereof further
Ask.Aforementioned patent is only the reference of the technology of the present invention background and current technology state of development is described, it is also
It is not used to limit the scope of the present invention.
Summary of the invention
In view of this, the present invention is in order to meet above-mentioned technical problem and demand, and it provides a kind of dual-port energy
Stocking system and control method thereof, its in a dual-port energy storage system arrange one first AC port, one
Second AC port and several switch, in order to utilize the control of several switch to operate, by dual-port energy storage
The storage energy of system exports via this first AC port and the second AC port and forms a pair of exchange end
Mouthful, the power supply power supply quality (such as: voltage, frequency etc.) of this first AC port and the second AC port
Selecting not by characterized by city-power or rely upon civil power, so this dual-port energy storage system is via this first exchange
Port and the second AC port provide different grades of power supply quality of supplying.The present invention has can promote conventional energy
The advantage of the various power quality of elastic supply of amount stocking system.It addition, the dual-port energy storage of the present invention
System provides double cross flow port, to avoid configuring two conventional energy storage systems, thus has simplification entirety
The advantage of structure.
The main purpose of present pre-ferred embodiments is to provide a kind of dual-port energy storage system and control thereof
Method, it arranges one first AC port and one second AC port in a dual-port energy storage system, and
Utilize a two-way power conversion circuit and one direct current-ac converter circuit, by the storage of an apparatus for storing electrical energy
Energy forms a pair of AC port via this first AC port and the second AC port, so via this first
AC port and the second AC port provide the power supply quality of civil power grade or provide clean and stable power supply
Quality, to reach the various power quality of elastic supply and to simplify the purpose of unitary construction.
In order to reach above-mentioned purpose, the present invention by the following technical solutions:
A kind of dual-port energy storage system, comprises:
One two-way power conversion circuit, it has an exchange end and a DC terminal；
One direct current-ac converter circuit, it has a DC terminal and an exchange end；
One apparatus for storing electrical energy, its DC terminal being connected to this bi-directional electric power change-over circuit and DC-AC are inverse
Between the DC terminal on power transformation road；
One first AC port, it is connected to the exchange end of this DC-AC inverter circuit；
One second AC port, it is connected to a mains supply or an alternating current power supply and this bi-directional electric power conversion electricity
Between the exchange end on road；
One first switch, it is connected to this mains supply or alternating current power supply and the friendship of this bi-directional electric power change-over circuit
Between stream end；
One second switch, it is connected to this first switch and is formed between end with exchanging of bi-directional electric power change-over circuit
One first junction point and this first AC port between；
One the 3rd switch, it is connected between this mains supply or alternating current power supply and this second AC port；And
One the 4th switch, it is connected between this second switch and the first AC port one second connection formed
Between point and this second AC port；
Wherein when this mains supply or alternating current power supply are normal, select to form this first switch and the 3rd switch
Guan Bi, and this second switch and the 4th switch are formed open circuit, so this mains supply or alternating current power supply is direct
Supply a civil power grade alternating current to this second AC port, and operate this bi-directional electric power change-over circuit by this city
The AC energy of electricity power supply or alternating current power supply is converted into direct current energy and is charged this apparatus for storing electrical energy, and
Via this DC-AC inverter circuit, the direct current energy of this bi-directional electric power change-over circuit is converted into one again to stablize
AC energy supplies power to this first AC port；
Wherein when this mains supply or alternating current power supply are normal and this apparatus for storing electrical energy discharges, selecting will
This first switch and the 3rd switch keeping form Guan Bi, and this second switch and the formation of the 4th switch keeping are opened
Road, so this mains supply or alternating current power supply directly for should civil power grade alternating current to this second exchange end
Mouthful, and via this DC-AC inverter circuit, the electric discharge direct current energy of this apparatus for storing electrical energy is converted into this
Stablize AC energy and supply power to this first AC port, and select this electricity via this bi-directional electric power change-over circuit
The electric discharge direct current energy of energy storage device is converted into AC energy and supplies power to this mains supply or alternating current power supply；
Wherein when this mains supply or AC mains failure or when keeping in repair, this first switch and the 3rd
Switch keeping forms open circuit, this second switch and the 4th switch keeping and forms Guan Bi, and selects two-way via this
The electric discharge direct current energy of this apparatus for storing electrical energy is converted into by power conversion circuit and DC-AC inverter circuit
AC energy, parallel operation is to this first AC port and the second AC port.
This bi-directional electric power change-over circuit of present pre-ferred embodiments is selected from a tool bi-directional electric power translation function
Combinational circuit or device.
This DC-AC inverter circuit of present pre-ferred embodiments is selected from a tool DC-AC translation function
Circuit or device.
This first AC port of present pre-ferred embodiments connects one first load.
This second AC port of present pre-ferred embodiments connects one second load.
Present pre-ferred embodiments when this mains supply or AC mains failure, this first switch and the
Three switch keeping form open circuit, this second switch and the 4th switch keeping and form Guan Bi, therefore this first exchange
Port and this second AC port are not affected and interruption of power supply by this mains supply or AC power failure.
Event is there is in present pre-ferred embodiments when this bi-directional electric power change-over circuit or this DC-AC inverter circuit
When hindering or keep in repair, utilize this first switch and second switch to form Guan Bi, make this first AC port straight
Connect and be powered by this mains supply or alternating current power supply, and this mains supply or alternating current power supply directly via this
Three switch supply alternating currents are to this second AC port.
In order to reach above-mentioned purpose, the control method of the dual-port energy storage system of present pre-ferred embodiments
Comprise:
One dual-port energy storage system comprise a two-way power conversion circuit, one direct current-ac converter circuit,
One apparatus for storing electrical energy, one first AC port, one second AC port, one first switch, one second open
Pass, one the 3rd switch, one the 4th switch；
This bi-directional electric power change-over circuit has an exchange end and a DC terminal, and this DC-AC inverter circuit
Having an exchange end and a DC terminal, this apparatus for storing electrical energy is connected to the direct current of this bi-directional electric power change-over circuit
Between end and the DC terminal of DC-AC inverter circuit, it is inverse that this first AC port is connected to this DC-AC
The exchange end on power transformation road, this second AC port is connected to a mains supply or an alternating current power supply and this two-way electricity
Between the exchange end of power change-over circuit, this first switch is connected to this mains supply or alternating current power supply and this is two-way
Between the exchange end of power conversion circuit, this second switch is connected to this first switch and bi-directional electric power conversion electricity
Between one first junction point and this first AC port that are formed between first end on road, the 3rd switch connects
Between this mains supply or alternating current power supply and this second AC port, the 4th switch is connected to this and second opens
Close between one second junction point and this second AC port formed between the first AC port；
When this mains supply or alternating current power supply are normal, select to close this first switch and the 3rd switch formation
Closing, and this second switch and the 4th switch are formed open circuit, so this mains supply or alternating current power supply directly supplies
Answer a civil power grade alternating current to this second AC port, and operate this bi-directional electric power change-over circuit by this civil power
The AC energy of power supply or alternating current power supply is converted into direct current energy and is charged this apparatus for storing electrical energy, and again
Via this DC-AC inverter circuit, the direct current energy of this bi-directional electric power change-over circuit is converted into one and stablizes friendship
Stream electric energy supplies power to this first AC port；
When this mains supply or alternating current power supply are normal and this apparatus for storing electrical energy discharges, select by this
One switch and the 3rd switch keeping form Guan Bi, and this second switch and the 4th switch keeping are formed open circuit,
So this mains supply or alternating current power supply directly for should civil power grade alternating current to this second AC port, and
Via this DC-AC inverter circuit, the electric discharge direct current energy of this apparatus for storing electrical energy is converted into this and stablizes friendship
Stream electric energy supplies power to this first AC port, and selects this electrical power storage via this bi-directional electric power change-over circuit
The electric discharge direct current energy of device is converted into AC energy and supplies power to this mains supply or alternating current power supply；
When this mains supply or AC mains failure or when keeping in repair, this first switch and the 3rd switch
Maintain and form open circuit, this second switch and the 4th switch keeping formation Guan Bi, and select via this bi-directional electric power
The electric discharge direct current energy of this apparatus for storing electrical energy is converted into exchange by change-over circuit and DC-AC inverter circuit
Electric energy, parallel operation is to this first AC port and the second AC port.
This bi-directional electric power change-over circuit of present pre-ferred embodiments is selected from a tool bi-directional electric power translation function
Combinational circuit or device.
This DC-AC inverter circuit of present pre-ferred embodiments is selected from a tool DC-AC translation function
Circuit or device.
This first AC port of present pre-ferred embodiments connects one first load.
This second AC port of present pre-ferred embodiments connects one second load.
Present pre-ferred embodiments when this mains supply or AC mains failure, this first switch and the
Three switch keeping form open circuit, this second switch and the 4th switch keeping and form Guan Bi, therefore this first exchange
Port and this second AC port are not affected and interruption of power supply by this mains supply or AC power failure.
Event is there is in present pre-ferred embodiments when this bi-directional electric power change-over circuit or this DC-AC inverter circuit
When hindering or keep in repair, utilize this first switch and second switch to form Guan Bi, make this first AC port straight
Connect and be powered by this mains supply or alternating current power supply, and this mains supply or alternating current power supply directly via this
Three switch supply alternating currents are to this second AC port.
Accompanying drawing explanation
Fig. 1 is the configuration diagram that conventional energy storage system carries out storing electric energy.
Fig. 2 is the configuration diagram that conventional energy storage system carries out discharging electric energy when civil power is normal.
Fig. 3 is the configuration diagram that conventional energy storage system carries out discharging electric energy when city's electrical anomaly.
Fig. 4 is the framework block schematic diagram of the dual-port energy storage system of present pre-ferred embodiments.
Fig. 5 is that apparatus for storing electrical energy is being entered by the dual-port energy storage system operation of present pre-ferred embodiments
The framework block schematic diagram of row charged state.
Fig. 6 is that the dual-port energy storage system operation of present pre-ferred embodiments is carried out at apparatus for storing electrical energy
The framework block schematic diagram of discharge condition.
Fig. 7 is that the dual-port energy storage system operation of present pre-ferred embodiments is carried out at apparatus for storing electrical energy
The framework block schematic diagram of another discharge condition.
Detailed description of the invention
In order to be fully understood by the present invention, in hereafter by citing preferred embodiment and coordinate accompanying drawing to elaborate,
And it is not limited to the present invention.
It is double that the dual-port energy storage system of present pre-ferred embodiments and control method thereof are applicable to various tool
Port energy storage system, or even expand the energy storage system being applicable to various tool multiport, such as:
Household's type energy storage system (residential ESS), community-type energy storage system (community
ESS) or commercial style energy storage system (commerical ESS), but it is not limited to the present invention
Range of application.
Fig. 4 discloses the framework block schematic diagram of the dual-port energy storage system of present pre-ferred embodiments.Please
With reference to shown in Fig. 4, the dual-port energy storage system 2 of present pre-ferred embodiments is connected to a mains supply
20 (or alternating current power supplys), in order to the energy input of mains supply 20 is stored in dual-port energy storage system
System 2, or the storage energy of dual-port energy storage system 2 is exported to mains supply 20.The present invention is preferable
Embodiment uses alternating current power supply to comprise various new forms of energy (renewable energy), such as: solar energy (
Solar power), wind energy (wind power), fuel cell (fuel cell) or other renewable sources of energy etc..
The source of apparatus for storing electrical energy 23 comprises various new forms of energy electric power, as solar energy, wind energy, fuel cell or
Other renewable sources of energy etc..
Referring again to shown in Fig. 4, the dual-port energy storage system 2 of present pre-ferred embodiments comprises a pair of
Open to power conversion circuit 21, one direct current-ac converter circuit 22, apparatus for storing electrical energy 23,1 first
Close 24, one second switch 25, the 3rd switch 26, the 4th switch 27,1 first AC port 28
And one second AC port 29.The first switch 24, second switch the 25, the 3rd switch 26 and the 4th is utilized to open
Close 27 Guan Bi or open loop manner control bi-directional electric power change-over circuit 21, DC-AC inverter circuit 22,
The operation of apparatus for storing electrical energy 23, in order to apparatus for storing electrical energy 23 carries out storing electric energy or being stored electricity
Suitably can export or Parallel opertation alternating current via the first AC port 28 and the second AC port 29
Can, to provide the power supply quality of supplying of various grade.
Referring again to shown in Fig. 4, bi-directional electric power change-over circuit 21 has an exchange end (left side) and always
Stream end (right side), and DC-AC inverter circuit 22 have a DC terminal (left side) and one exchange end (
Right side).Apparatus for storing electrical energy 23 is connected to DC terminal and the DC-AC of bi-directional electric power change-over circuit 21
Between the DC terminal of inverter circuit 22.Bi-directional electric power change-over circuit 21 is also selected from a tool bi-directional electric power conversion
The combinational circuit of function or device.Relative, DC-AC inverter circuit 22 be also selected from a tool direct current-
The circuit of exchange translation function or device.It addition, the first AC port 28 and the second AC port 29 are suitable
Being configured at dual-port energy storage system 2, this dual-port energy storage system 2 is via the first AC port 28
And second AC port 29 be respectively connecting to one first load 3 and one second load 3 '.
Referring again to shown in Fig. 4, the first switch 24 is connected to mains supply 20 or alternating current power supply and two-way electricity
Between the exchange end of power change-over circuit 21.First switch 24 is an alternating-current switch, and it is selected from various machinery
Formula element (mechanical device), such as relay (relay) or electromagnetic contactor (magnetic
Contactor), or be selected from various solid-state element (solid-state device), as reverse and connect (
Anti-parallel) thyristor (thyristor) or isolation gated transistor (insulated gate bipolar
Transistor, IGBT).
Referring again to shown in Fig. 4, second switch the 25, the 3rd switch 26 and the 4th switch 27 are that an exchange is opened
Closing, it is selected from various mechanical type element, such as relay or electromagnetic contactor, or is selected from various solid-state unit
Part, such as thyristor that is reverse and that connect or isolation gated transistor.Second switch 25 be connected to the first switch 24 with
The one first junction point a formed between the exchange end of bi-directional electric power change-over circuit 21 and the first AC port 28
Between.3rd switch 26 is connected between mains supply 20 or alternating current power supply and the second AC port 29.
4th switch 27 is connected between second switch 25 and the first AC port 28 the one second junction point b formed
And second between AC port 29.
Fig. 5 discloses the dual-port energy storage system of present pre-ferred embodiments and operates to apparatus for storing electrical energy
Being charged the framework block schematic diagram of state, it is corresponding to the dual-port energy storage system 2 of Fig. 4.Please
With reference to shown in Fig. 5, the first mode of operation of dual-port energy storage system 2 is: when mains supply 20
Or alternating current power supply normal time, select, by the first switch 24 and the 3rd switch 26 formation Guan Bi, and to open second
Closing 25 and the 4th and switch 27 formation open circuits, such mains supply 20 or alternating current power supply directly supply a civil power
Grade alternating current is to the second AC port 29 (the second load 3 '), such as upper dotted line and the direction of arrow of Fig. 5
Shown in, and operation bi-directional electric power change-over circuit 21 AC energy of mains supply or alternating current power supply is converted into
Apparatus for storing electrical energy 23 is charged by direct current energy, and again will be double via DC-AC inverter circuit 22
Direct current energy to power conversion circuit 21 is converted into one and stablizes AC energy and supply power to the first AC port 28
(first load 3), as shown in the lower dotted line of Fig. 5 and the direction of arrow.Therefore, when mains supply 20 or friendship
When stream power supply is normal, the power quality of the second load 3 ' is determined by mains supply 20 or alternating current power supply.It addition,
The power quality of the first load 3 is then unrelated with mains supply 20 or alternating current power supply, and by DC-AC inversion
Circuit 22 determines, so can avoid the interference of mains supply 20 or alternating current power supply, i.e. supplies to the first load
The power quality of 3 is clean and stable power supply.Therefore, the present invention can be according to the first load 3 second load 3 '
Requirement to power quality determines that load must be alternatively coupled to the first AC port 28 or the second AC port
29。
Fig. 6 discloses the dual-port energy storage system operation of present pre-ferred embodiments and enters at apparatus for storing electrical energy
The framework block schematic diagram of row discharge condition, it corresponds to Fig. 5.Refer to shown in Fig. 6, dual-port energy
The second mode of operation of stocking system 2 is: when mains supply 20 or alternating current power supply are normal and electrical power storage
When device 23 discharges, select the first switch 24 and the 3rd switch 26 maintenance are formed Guan Bi, and will
Second switch 25 and the 4th switch 27 maintenance form open circuit, and such mains supply 20 or alternating current power supply are direct
Supply civil power grade alternating current to the second AC port 29 (the second load 3 '), as Fig. 6 upper dotted line and
Shown in the direction of arrow, and via DC-AC inverter circuit 22 by the electric discharge direct current of apparatus for storing electrical energy 23
Electric energy is converted into stable AC energy and supplies power to the first AC port 28 (the first load 3), such as the right side of Fig. 6
Shown in lower dotted line and the direction of arrow, and select apparatus for storing electrical energy 23 via bi-directional electric power change-over circuit 21
Electric discharge direct current energy be converted into AC energy and supply power to mains supply 20 or alternating current power supply, such as a left side of Fig. 6
Shown in lower dotted line and the direction of arrow.
Fig. 7 discloses the dual-port energy storage system operation of present pre-ferred embodiments and enters at apparatus for storing electrical energy
The framework block schematic diagram of another discharge condition of row, it corresponds to Fig. 5 and Fig. 6.Refer to shown in Fig. 7,
The third mode of operation of dual-port energy storage system 2 is: when mains supply 20 or alternating current power supply are normal
And apparatus for storing electrical energy 23 is when discharging, select the first switch 24 and the 3rd switch 26 formation open circuit,
And by second switch 25 and the 4th switch 27 formation Guan Bi, such mains supply 20 or alternating current power supply stop
Supply power to the first AC port 28 and the second AC port 29, and via bi-directional electric power change-over circuit 21 and straight
The electric discharge direct current energy of apparatus for storing electrical energy 23 is converted into AC energy by stream-ac converter circuit 22, and
Connection supplies power to the first AC port 28 (the first load 3), as shown in the bottom right dotted line of Fig. 7 and the direction of arrow,
And parallel operation is to the second AC port 29 (the second load 3 '), such as lower-left and upper dotted line and the arrow of Fig. 7
Shown in head direction.
Referring again to shown in Fig. 7, the 4th kind of mode of operation of dual-port energy storage system 2 is: work as civil power
When power supply 20 or AC mains failure, the first switch 24 and the 3rd switch 26 maintenance form open circuit,
Second switch 25 and the 4th switch 27 maintenance form Guan Bi, therefore first AC port 28 (the first load 3
) with the second AC port 29 (the second load 3 ') the most not by mains supply 20 or the shadow of AC power failure
Ring and interruption of power supply.Now, the present invention is optional inverse via bi-directional electric power change-over circuit 21 and DC-AC
The electric discharge direct current energy of apparatus for storing electrical energy 23 is converted into AC energy by power transformation road 22, parallel operation to
One AC port 28 (the first load 3), as shown in the bottom right dotted line of Fig. 7 and the direction of arrow, and and alliance
Electricity is to the second AC port 29 (the second load 3 '), such as lower-left and upper dotted line and the direction of arrow institute of Fig. 7
Show.
Referring again to shown in Fig. 5, the 5th kind of mode of operation of dual-port energy storage system 2 is: when two-way
When power conversion circuit 21 or DC-AC inverter circuit 22 break down or keep in repair, utilize first
Switch 24 and second switch 25 form Guan Bi, make the first AC port 28 (the first load 3) directly by city
Electricity power supply 20 or alternating current power supply are powered.Now, mains supply 20 or alternating current power supply are directly via the 3rd
Switch 26 supply alternating current is to the second AC port 29 (the second load 3 '), such as upper dotted line and the arrow of Fig. 5
Shown in head direction.
Aforementioned preferred embodiment only illustrates the present invention and technical characteristic thereof, and the technology of this embodiment still can be fitted
When carrying out various essence equivalence modification and/or substitute mode is practiced；Therefore, the interest field of the present invention
Must be defined in the range of standard depending on appended claims.
Claims (14)
1. dual-port energy storage system, it is characterised in that comprise:
One two-way power conversion circuit, it has an exchange end and a DC terminal；
One direct current-ac converter circuit, it has a DC terminal and an exchange end；
One apparatus for storing electrical energy, its DC terminal being connected to this bi-directional electric power change-over circuit and DC-AC are inverse
Between the DC terminal on power transformation road；
One first AC port, it is connected to the exchange end of this DC-AC inverter circuit；
One second AC port, it is connected to a mains supply or an alternating current power supply and this bi-directional electric power conversion electricity
Between the exchange end on road；
One first switch, it is connected to this mains supply or alternating current power supply and the friendship of this bi-directional electric power change-over circuit
Between stream end；
One second switch, it is connected to this first switch and is formed between end with exchanging of bi-directional electric power change-over circuit
One first junction point and this first AC port between；
One the 3rd switch, it is connected between this mains supply or alternating current power supply and this second AC port；And
One the 4th switch, it is connected between this second switch and the first AC port one second connection formed
Between point and this second AC port；
Wherein when this mains supply or alternating current power supply are normal, select to form this first switch and the 3rd switch
Guan Bi, and this second switch and the 4th switch are formed open circuit, so this mains supply or alternating current power supply is direct
Supply a civil power grade alternating current to this second AC port, and operate this bi-directional electric power change-over circuit by this city
The AC energy of electricity power supply or alternating current power supply is converted into direct current energy and is charged this apparatus for storing electrical energy, and
Via this DC-AC inverter circuit, the direct current energy of this bi-directional electric power change-over circuit is converted into one again to stablize
AC energy supplies power to this first AC port；
Wherein when this mains supply or alternating current power supply are normal and this apparatus for storing electrical energy discharges, selecting will
This first switch and the 3rd switch keeping form Guan Bi, and this second switch and the formation of the 4th switch keeping are opened
Road, so this mains supply or alternating current power supply directly for should civil power grade alternating current to this second exchange end
Mouthful, and via this DC-AC inverter circuit, the electric discharge direct current energy of this apparatus for storing electrical energy is converted into this
Stablize AC energy and supply power to this first AC port, and select this electricity via this bi-directional electric power change-over circuit
The electric discharge direct current energy of energy storage device is converted into AC energy and supplies power to this mains supply or alternating current power supply；
Wherein when this mains supply or AC mains failure or when keeping in repair, this first switch and the 3rd
Switch keeping forms open circuit, this second switch and the 4th switch keeping and forms Guan Bi, and selects two-way via this
The electric discharge direct current energy of this apparatus for storing electrical energy is converted into by power conversion circuit and DC-AC inverter circuit
AC energy, parallel operation is to this first AC port and the second AC port.
Dual-port energy storage system the most according to claim 1, it is characterised in that described two-way
Power conversion circuit is selected from the combinational circuit having bi-directional electric power translation function or a device.
Dual-port energy storage system the most according to claim 1, it is characterised in that described direct current
-ac converter circuit is selected from the circuit having DC-AC translation function or a device.
Dual-port energy storage system the most according to claim 1, it is characterised in that described first
AC port connects one first load.
Dual-port energy storage system the most according to claim 1, it is characterised in that described second
AC port connects one second load.
Dual-port energy storage system the most according to claim 1, it is characterised in that when described city
When electricity power supply or AC mains failure, described first switch and the 3rd switch keeping form open circuit, described
Second switch and the 4th switch keeping form Guan Bi, and the most described first AC port and the second AC port are equal
Do not affected and interruption of power supply by this mains supply or AC power failure.
Dual-port energy storage system the most according to claim 1, it is characterised in that when described double
When power conversion circuit or described DC-AC inverter circuit break down or keep in repair, utilize described
First switch and second switch form Guan Bi, make described first AC port directly by described mains supply or friendship
Stream power supply is powered, and this mains supply or alternating current power supply are directly via described 3rd switch supply alternating current
To described second AC port.
8. the control method of dual-port energy storage system, it is characterised in that comprise:
One dual-port energy storage system comprise a two-way power conversion circuit, one direct current-ac converter circuit,
One apparatus for storing electrical energy, one first AC port, one second AC port, one first switch, one second open
Pass, one the 3rd switch, one the 4th switch；
This bi-directional electric power change-over circuit has an exchange end and a DC terminal, and this DC-AC inverter circuit
Having an exchange end and a DC terminal, this apparatus for storing electrical energy is connected to the direct current of this bi-directional electric power change-over circuit
Between end and the DC terminal of DC-AC inverter circuit, it is inverse that this first AC port is connected to this DC-AC
The exchange end on power transformation road, this second AC port is connected to a mains supply or an alternating current power supply and this two-way electricity
Between the exchange end of power change-over circuit, this first switch is connected to this mains supply or alternating current power supply and this is two-way
Between the exchange end of power conversion circuit, this second switch is connected to this first switch and bi-directional electric power conversion electricity
Between one first junction point and this first AC port that are formed between first end on road, the 3rd switch connects
Between this mains supply or alternating current power supply and this second AC port, the 4th switch is connected to this and second opens
Close between one second junction point and this second AC port formed between the first AC port；
When this mains supply or alternating current power supply are normal, select to close this first switch and the 3rd switch formation
Closing, and this second switch and the 4th switch are formed open circuit, so this mains supply or alternating current power supply directly supplies
Answer a civil power grade alternating current to this second AC port, and operate this bi-directional electric power change-over circuit by this civil power
The AC energy of power supply or alternating current power supply is converted into direct current energy and is charged this apparatus for storing electrical energy, and again
Via this DC-AC inverter circuit, the direct current energy of this bi-directional electric power change-over circuit is converted into one and stablizes friendship
Stream electric energy supplies power to this first AC port；
When this mains supply or alternating current power supply are normal and this apparatus for storing electrical energy discharges, select by this
One switch and the 3rd switch keeping form Guan Bi, and this second switch and the 4th switch keeping are formed open circuit,
So this mains supply or alternating current power supply directly for should civil power grade alternating current to this second AC port, and
Via this DC-AC inverter circuit, the electric discharge direct current energy of this apparatus for storing electrical energy is converted into this and stablizes friendship
Stream electric energy supplies power to this first AC port, and selects this electrical power storage via this bi-directional electric power change-over circuit
The electric discharge direct current energy of device is converted into AC energy and supplies power to this mains supply or alternating current power supply；
When this mains supply or AC mains failure or when keeping in repair, this first switch and the 3rd switch
Maintain and form open circuit, this second switch and the 4th switch keeping formation Guan Bi, and select via this bi-directional electric power
The electric discharge direct current energy of this apparatus for storing electrical energy is converted into exchange by change-over circuit and DC-AC inverter circuit
Electric energy, parallel operation is to this first AC port and the second AC port.
The control method of dual-port energy storage system the most according to claim 8, it is characterised in that
Described bi-directional electric power change-over circuit has bi-directional electric power translation function selected from a two-way power conversion circuit or one
Combinational circuit or device.
The control method of dual-port energy storage system the most according to claim 8, it is characterised in that
Described DC-AC inverter circuit is selected from the circuit having DC-AC translation function or a device.
The control method of 11. dual-port energy storage systems according to claim 8, it is characterised in that
Described first AC port connects one first load.
The control method of 12. dual-port energy storage systems according to claim 8, it is characterised in that
Described second AC port connects one second load.
The control method of 13. dual-port energy storage systems according to claim 8, it is characterised in that
When described mains supply or AC mains failure, described first switch and the 3rd switch keeping are formed and open
Road, described second switch and the 4th switch keeping form Guan Bi, and the most described first AC port and second is handed over
Flow port is not affected and interruption of power supply by this mains supply or AC power failure.
The control method of 14. dual-port energy storage systems according to claim 8, it is characterised in that
When described bi-directional electric power change-over circuit or DC-AC inverter circuit break down or keep in repair, utilize
Described first switch and second switch form Guan Bi, make described first AC port directly by this mains supply or
Alternating current power supply is powered, and this mains supply or alternating current power supply are directly via described 3rd switch supply exchange
Electricity is to described second AC port.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103140115A TWI532296B (en) | 2014-11-19 | 2014-11-19 | Double-port energy storage system and control method thereof |
| TW103140115 | 2014-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106208181A true CN106208181A (en) | 2016-12-07 |
| CN106208181B CN106208181B (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510411344.6A Active CN106208181B (en) | 2014-11-19 | 2015-07-14 | dual-port energy storage system and control method thereof |
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| Country | Link |
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| CN (1) | CN106208181B (en) |
| TW (1) | TWI532296B (en) |
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| US20080067872A1 (en) * | 2006-09-14 | 2008-03-20 | American Power Conversion Corporation | Apparatus and method for employing a DC source with an uninterruptible power supply |
| CN102215012A (en) * | 2011-06-07 | 2011-10-12 | 天宝电子（惠州）有限公司 | Bidirectional transformation system of solar energy and electric energy |
| CN102270884A (en) * | 2010-06-01 | 2011-12-07 | 三星Sdi株式会社 | Energy storage system and method of controlling the same |
| CN202167860U (en) * | 2011-07-15 | 2012-03-14 | 珠海银通新能源有限公司 | Intelligent energy storage machine |
| US20130293012A1 (en) * | 2012-05-07 | 2013-11-07 | Korea Institute Of Energy Research | System and method for converting electric power, and apparatus and method for controlling the system |
-
2014
- 2014-11-19 TW TW103140115A patent/TWI532296B/en active
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2015
- 2015-07-14 CN CN201510411344.6A patent/CN106208181B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080067872A1 (en) * | 2006-09-14 | 2008-03-20 | American Power Conversion Corporation | Apparatus and method for employing a DC source with an uninterruptible power supply |
| CN102270884A (en) * | 2010-06-01 | 2011-12-07 | 三星Sdi株式会社 | Energy storage system and method of controlling the same |
| CN102215012A (en) * | 2011-06-07 | 2011-10-12 | 天宝电子（惠州）有限公司 | Bidirectional transformation system of solar energy and electric energy |
| CN202167860U (en) * | 2011-07-15 | 2012-03-14 | 珠海银通新能源有限公司 | Intelligent energy storage machine |
| US20130293012A1 (en) * | 2012-05-07 | 2013-11-07 | Korea Institute Of Energy Research | System and method for converting electric power, and apparatus and method for controlling the system |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI532296B (en) | 2016-05-01 |
| TW201620231A (en) | 2016-06-01 |
| CN106208181B (en) | 2019-04-05 |
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