CN108011514A - Photovoltaic air conditioner, double photovoltaic input circuit and control method thereof - Google Patents
Photovoltaic air conditioner, double photovoltaic input circuit and control method thereof Download PDFInfo
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- CN108011514A CN108011514A CN201710930396.3A CN201710930396A CN108011514A CN 108011514 A CN108011514 A CN 108011514A CN 201710930396 A CN201710930396 A CN 201710930396A CN 108011514 A CN108011514 A CN 108011514A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012512 characterization method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/02—Arrangements for reducing harmonics or ripples
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- H02J3/383—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a photovoltaic air conditioner and a double-photovoltaic input circuit and a control method thereof, wherein the double-photovoltaic input circuit comprises: a first BOOST circuit connected between the first photovoltaic input and the dc bus; a second BOOST circuit connected between the second photovoltaic input and the dc bus; the selector switch group is respectively connected between the first photovoltaic input and the first BOOST circuit and between the second photovoltaic input and the second BOOST circuit; the switch group is used for switching the switch state between the first photovoltaic input and the first BOOST circuit and switching the switch state between the second photovoltaic input and the second BOOST circuit. The photovoltaic BOOST circuit solves the problems that in the prior art, a photovoltaic BOOST circuit has a single working mode and cannot turn off photovoltaic input with lower voltage.
Description
Technical field
The present invention relates to PV air-conditioner technical field, and electricity is inputted in particular to a kind of PV air-conditioner and its double photovoltaics
Road and control method.
Background technology
Photovoltaic DC-to-AC converter even more plays increasingly important effect as one of grid-connected most crucial device.It please join
Fig. 1 is examined, in order to reach the main purpose for improving efficiency and reducing industry manufacture cost, develops the photovoltaic of various new in recent years
Inverter topology, currently used converter is H bridges and neutral-point-clamped type and its derivative topology, in order to meet different capacity
Class requirement, some manufacturers also provide two-way or the inverter of multichannel photovoltaic input.Consideration based on cost, these producers carry
The double line photovoltaic inverter of confession is also the photovoltaic input of two-way independence mostly, respectively after two BOOST boost, then will be straight
Stream busbar is connected in parallel to reach corresponding power grade.
And in PV air-conditioner, the photovoltaic BOOST or photovoltaic combiner box of front end and the common structures of AC/DC of dc bus side
Into current transformer, equivalent to one photovoltaic combining inverter.More typical PV air-conditioner product is under normal circumstances currently on the market
Single channel photovoltaic or the photovoltaic BOOST circuits of two-way independence, even two-way or multichannel photovoltaic BOOST due to manpower, cost or
Innovation Input such as is difficult to take effect in a short time the reason, also simply using each road independence the parallel connection of BOOST dc bus side method,
Using it is this it is in parallel by the way of when, whether single channel or two-way photovoltaic are run at the same time, and bus bar side output voltage has larger line
Ripple, becomes apparent when especially switching frequency is relatively low or when photovoltaic panel works under low light condition, can give press to a certain extent
Or wind turbine brings torque pulsation, or harmonic pollution is brought to simultaneously net side.
Therefore, how to realize do not go the same way photovoltaic input operational mode with improve photovoltaic utilization rate and improve power quality
As technical problem urgently to be resolved hurrily.
The content of the invention
The present invention provides a kind of PV air-conditioner and its double photovoltaic input circuits and control method, at least to solve existing skill
Photovoltaic BOOST circuit operating patterns are single in art, can not turn off the problem of relatively low photovoltaic of voltage inputs.
In order to solve the above technical problems, according to the embodiment of the present disclosure in a first aspect, the present invention provides a kind of double photovoltaics
Input circuit, including：
First BOOST circuits, are connected between the input of the first photovoltaic and dc bus；2nd BOOST circuits, are connected to
Second photovoltaic is inputted between dc bus；Switching switch group, be connected to the first photovoltaic input and the first BOOST circuits it
Between and the second photovoltaic input the 2nd BOOST circuits between；Switching switch group is used to switch the input of the first photovoltaic and first
On off state between on off state between BOOST circuits, and the input of the second photovoltaic of switching and the 2nd BOOST circuits.
Alternatively, switching switch group includes：First switch unit, is connected to the input of the first photovoltaic and the first BOOST circuits
Between, for switching the on off state between the input of the first photovoltaic and the first BOOST circuits；Second switch unit, is connected to
Two photovoltaics are inputted between the 2nd BOOST circuits, for switching the switch shape between the input of the second photovoltaic and the 2nd BOOST circuits
State.
Alternatively, switching switch group further includes：D.C. contactor, is connected to first switch unit and the first BOOST circuits
Tie point and the tie point of second switch unit and the 2nd BOOST circuits between.
Alternatively, first switch unit includes first switch in parallel and the 3rd switch；Second switch unit includes parallel connection
Second switch and the 4th switch.
Alternatively, further include：First current-limiting resistance, is connected on the branch at the 3rd switch place；Second current-limiting resistance, even
It is connected on the branch at the 4th switch place.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of double photovoltaic input circuit control methods, including：
The electric signal of the first photovoltaic input and the electric signal of the second photovoltaic input are detected respectively；It is defeated that judgement obtains the first photovoltaic
Whether the electric signal entered and the electric signal of the second photovoltaic input meet the judging result of respective entry condition；According to judging result
It is used to characterize the switch controlling signal for starting corresponding photovoltaic input to the output of switching switch group.
Alternatively, when judging result is：The electric signal of first photovoltaic input meets its entry condition, the input of the second photovoltaic
When electric signal does not meet its entry condition, switch controlling signal includes：First switch and second switch are disconnected, closure the 3rd is opened
Close, charged with the circuit inputted to the first photovoltaic；After charging complete, first switch and D.C. contactor are closed, is disconnected
3rd switch, so that the input of the first photovoltaic operates in independent boost mode.
Alternatively, when judging result is：The electric signal of second photovoltaic input meets its entry condition, the input of the first photovoltaic
When electric signal does not meet its entry condition, switch controlling signal includes：First switch and second switch are disconnected, closure the 4th is opened
Close, charged with the circuit inputted to the second photovoltaic；After charging complete, second switch and D.C. contactor are closed, is disconnected
4th switch, so that the input of the second photovoltaic operates in independent boost mode.
Alternatively, when judging result is：The electric signal of first photovoltaic input and the electric signal of the second photovoltaic input are satisfied by
During respective entry condition, switch controlling signal includes：First switch and second switch are disconnected, the switch of closure the 3rd and the 4th open
Close, charged with the circuit that the circuit inputted to the first photovoltaic and the second photovoltaic input；After charging complete, closure first is opened
Pass and second switch, disconnect the 3rd switch, the 4th switch and D.C. contactor, so that the input of the first photovoltaic and the input of the second photovoltaic
Operate in crisscross parallel pattern.
According to the third aspect of the embodiment of the present disclosure, there is provided a kind of PV air-conditioner, including：
Wind turbine；The arbitrary double photovoltaic input circuits of above-mentioned first aspect, power supply is provided to wind turbine.
In the present invention, due to switching switch group be connected to the first photovoltaic input the first BOOST circuits between with
And second between photovoltaic input and the 2nd BOOST circuits, the input of the first photovoltaic and the can be switched respectively by switching switch group
On off state between the input of two photovoltaics and BOOST circuits, so that, realize the list that the input of the first photovoltaic is inputted with the second photovoltaic
Solely control, then, can realize that the photovoltaic do not gone the same way input is run under different operating modes with best pattern match, send out photovoltaic panel
Electrical efficiency maximizes, while improves dc bus power quality.
Brief description of the drawings
Fig. 1 is this photovoltaic BOOST electrical block diagram in the prior art；
Fig. 2 is a kind of double photovoltaic input circuit structure diagrams of the embodiment of the present invention；
Fig. 3 is a kind of double photovoltaic input circuit control method flow charts of the embodiment of the present invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
In order to realize that the photovoltaic do not gone the same way input is run with optimal mode, present embodiment discloses a kind of double photovoltaic input electricity
Road, please refers to Fig.2, and for this pair of photovoltaic input circuit structure diagram, this pair of photovoltaic input circuit includes：First BOOST circuits,
2nd BOOST circuits and switching switch group, wherein：
First BOOST circuits are connected between the first photovoltaic input PV1+ and dc bus.In a particular embodiment, first
BOOST circuits can also be connected to dc bus by bus bar side filter circuit.In a particular embodiment, the first BOOST circuits
It can be realized using existing circuit.Specifically, please refer to Fig.2, the first BOOST circuits include：It is sequentially connected in series in the first light
With lying prostrate input PV1+ and photovoltaic the inductance L1 between PV- and triode Q1 and diode in parallel；Inductance L1 and the first photovoltaic are defeated
Enter and be connected with storage capacitance C1 between PV1+；Diode D1 is serially connected in the tie point and dc bus of inductance L1 and triode Q1
Between.In an alternate embodiment of the invention, current sensor AD1 can also be connected between the first photovoltaic inputs PV1+ and inductance L1,
To gather the electric current flowed through.In an alternate embodiment of the invention, capacitance C3 can also be connected between PV- in diode D1 and photovoltaic.
2nd BOOST circuits are connected between the second photovoltaic input PV2+ and dc bus.In a particular embodiment, second
BOOST circuits can also be connected to dc bus by bus bar side filter circuit.In a particular embodiment, the 2nd BOOST circuits
It can be realized using existing circuit.Specifically, please refer to Fig.2, the 2nd BOOST circuits include：It is sequentially connected in series in the second light
With lying prostrate input PV2+ and photovoltaic the inductance L2 between PV- and triode Q2 and diode in parallel；Inductance L2 and the second photovoltaic are defeated
Enter and be connected with storage capacitance C2 between PV2+；Diode D2 is serially connected in the tie point and dc bus of inductance L2 and triode Q2
Between.Current sensor AD2 can also be connected between the second photovoltaic inputs PV2+ and inductance L2, to gather the electric current flowed through.
Switching switch group is connected between the first photovoltaic input PV1+ and the first BOOST circuits and the second photovoltaic is defeated
Enter between PV2+ and the 2nd BOOST circuits；Switching switch group be used for switch the first photovoltaic input PV1+ and the first BOOST circuits it
Between on off state, and switching the second photovoltaic input PV2+ and the 2nd BOOST circuits between on off state.
Switch for the ease of inputting the on off state of PV1+ and the second photovoltaic input PV2+ to the first photovoltaic, be embodied
In example, switching switch group includes：First switch unit and second switch unit, wherein, first switch unit is connected to the first light
Between volt input PV1+ and the first BOOST circuits, for switching between the first photovoltaic input PV1+ and the first BOOST circuits
On off state；Second switch unit is connected between the second photovoltaic input PV2+ and the 2nd BOOST circuits, for switching the second light
On off state between volt input PV2+ and the 2nd BOOST circuits.
Please refer to Fig.2, in a particular embodiment, switching switch group further includes D.C. contactor KM, and D.C. contactor KM connects
It is connected to the connection of the tie point and second switch unit and the 2nd BOOST circuits of first switch unit and the first BOOST circuits
Between point.In the present embodiment, first switch unit and second switch units shared D.C. contactor KM, thus, the first photovoltaic is defeated
Entering PV1+ and the second photovoltaic input PV2+ can be charged with public direct current contactor KM, so that, save component.
Please refer to Fig.2, in a particular embodiment, first switch unit includes the switches of first switch K1 in parallel and the 3rd
K3, it is thus possible to which being respectively turned on the first photovoltaic by the switches of first switch K1 and the 3rd K3 inputs PV1+ and the first BOOST electricity
Road.In an alternate embodiment of the invention, first switch unit further includes：First current-limiting resistance R1, the first current-limiting resistance R1 is connected to
On branch where three switch K3, to suppress current spike；
Second switch unit includes the switch K4 of second switch K2 in parallel and the 4th, it is thus possible to pass through second switch K2
The second photovoltaic input PV2+ and the 2nd BOOST circuits are respectively turned on the 4th switch K4.In an alternate embodiment of the invention, second switch
Unit further includes：Second current-limiting resistance R2, the second current-limiting resistance R2 are connected on the branch where the 4th switch K4, to suppress electricity
Flow spike.
The present embodiment also discloses a kind of control method of the double photovoltaic input circuits of above-described embodiment, please refers to Fig.3, for this
Double photovoltaic input circuit control method flow charts, this pair of photovoltaic input circuit control method include：
Step S100, detects the electric signal of the first photovoltaic input PV1+ and the electric signal of the second photovoltaic input PV2+ respectively.
In the present embodiment, alleged electric signal can be electric current or voltage.
Step S200, judges that obtaining the electric signal of the first photovoltaic input PV1+ and the electric signal of the second photovoltaic input PV2+ is
The no judging result for meeting respective entry condition.In a particular embodiment, can be by the by taking electric signal is voltage signal as an example
The electric signal of one photovoltaic input PV1+ is compared with corresponding threshold value, if the voltage of the first photovoltaic input PV1+ exceedes
Threshold value, then obtain the first photovoltaic input PV1+ and meet the judging result of entry condition, conversely, not meeting entry condition then；By
The electric signal of two photovoltaics input PV2+ is compared with corresponding threshold value, if the voltage of the second photovoltaic input PV2+ exceedes
Threshold value, then obtain the second photovoltaic input PV2+ and meet the judging result of entry condition, conversely, not meeting entry condition then.
Step S300, the switch of the corresponding photovoltaic input of characterization startup is used for according to judging result to the output of switching switch group
Control signal.
In a particular embodiment, when performing step S300：
Please refer to Fig.2, when judging result is：The electric signal of first photovoltaic input PV1+ meets its entry condition, the second light
When the electric signal of volt input PV2+ does not meet its entry condition, switch controlling signal includes：First switch K1 and second is disconnected to open
K2 is closed, the switch K3 of closure the 3rd, is charged with the circuit to the first photovoltaic input PV1+；After charging complete, closure first
K1 and D.C. contactor KM is switched, disconnects the 3rd switch K3, so that the first photovoltaic input PV1+ operates in independent boost mode.
At this time, the second photovoltaic input PV2+ is out of service.In the present embodiment, alleged charging complete can be by gathering the electricity of charge circuit
Signal is used as the mark of completion, can also determine charging complete by way of preset time arrival.
Please refer to Fig.2, when judging result is：The electric signal of second photovoltaic input PV2+ meets its entry condition, the first light
When the electric signal of volt input PV1+ does not meet its entry condition, switch controlling signal includes：First switch K1 and second is disconnected to open
K2 is closed, the switch K4 of closure the 4th, is charged with the circuit to the second photovoltaic input PV2+；After charging complete, closure second
K2 and D.C. contactor KM is switched, disconnects the 4th switch K4, so that the second photovoltaic input PV2+ operates in independent boost mode.
At this time, the first photovoltaic input PV1+ is out of service.In the present embodiment, alleged charging complete can be by gathering the electricity of charge circuit
Signal is used as the mark of completion, can also determine charging complete by way of preset time arrival.
Please refer to Fig.2, when judging result is：The electric signal of first photovoltaic input PV1+ and the electricity of the second photovoltaic input PV2+
When signal is satisfied by respective entry condition, switch controlling signal includes：Disconnect first switch K1 and second switch K2, closure the
Three switch K3 and the 4th switch K4, are carried out with the circuit in the circuit to the first photovoltaic input PV1+ and the second photovoltaic input PV2+
Charging；After charging complete, first switch K1 and second switch K2 is closed, disconnects the 3rd switch K3, the 4th switch K4 and direct current
Contactor KM, so that the first photovoltaic input PV1+ and the second photovoltaic input PV2+ operate in crisscross parallel pattern.In the present embodiment,
Alleged charging complete should refer to the first photovoltaic input PV1+ charge circuit and the second photovoltaic input PV2+ charge circuit it is equal
Complete to charge, the mark specifically completed can be found in the description of above-described embodiment.
In an alternate embodiment of the invention, when judging result is：The electric signal of first photovoltaic input PV1+ and the input of the second photovoltaic
When the electric signal of PV2+ does not meet respective entry condition, then continue to gather the electric signal and second of the first photovoltaic input PV1+
Photovoltaic inputs the electric signal of PV2+.
The present embodiment also discloses a kind of PV air-conditioner, including：Double photovoltaic input electricity disclosed in wind turbine and above-described embodiment
Road, wherein, double photovoltaic input circuits provide power supply to wind turbine.
PV air-conditioner disclosed in the present embodiment and its double photovoltaic input circuits and control method, since switching switch group is distinguished
It is connected between the input of the first photovoltaic and the first BOOST circuits and between the input of the second photovoltaic and the 2nd BOOST circuits, passes through
Switching switch group can switch the on off state between the input of the first photovoltaic and the input of the second photovoltaic and BOOST circuits respectively, from
And the independent control of the input of the first photovoltaic and the input of the second photovoltaic is realized, then, it can realize that the photovoltaic input do not gone the same way exists
Run under corresponding operating mode with optimal mode, improve generating efficiency, improve dc bus power quality.
In addition, during PV air-conditioner normal operation, there are four kinds of patterns in the case of no user intervention：First light
Volt input PV1+ runs on independent boost mode, and the second photovoltaic input PV2+ is out of service；Second photovoltaic input PV2+ is run on
Independent boost mode, the first photovoltaic input PV1+ are out of service；First photovoltaic inputs PV1+ and the second photovoltaic input PV2+ stops
Only run；First photovoltaic inputs PV1+ and the second photovoltaic inputs PV2+ with crisscross parallel mode operation.PV air-conditioner system is in office
Anticipate the moment, only run one mode, and during operation, detect voltage, the current conditions of two-way photovoltaic input side in real time,
Adjust corresponding logic, can intelligently running mode switching, with best pattern match operating condition.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and the common knowledge in the art do not invented including the present invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim.
Claims (10)
- A kind of 1. double photovoltaic input circuits, it is characterised in that including：First BOOST circuits, are connected to the first photovoltaic input (PV1+) between dc bus；2nd BOOST circuits, are connected between the second photovoltaic input (PV2+) and the dc bus；Switching switch group, is connected between first photovoltaic input (PV1+) and the first BOOST circuits and institute State between the second photovoltaic input (PV2+) and the 2nd BOOST circuits；The switching switch group is used to switch first light On off state between volt input (PV1+) and the first BOOST circuits, and switching the second photovoltaic input (PV2+) On off state between the 2nd BOOST circuits.
- 2. double photovoltaic input circuits as claimed in claim 1, it is characterised in that the switching switch group includes：First switch unit, is connected between the first photovoltaic input (PV1+) and the first BOOST circuits, for switching On off state between the first photovoltaic input (PV1+) and the first BOOST circuits；Second switch unit, is connected between the second photovoltaic input (PV2+) and the 2nd BOOST circuits, for switching On off state between the second photovoltaic input (PV2+) and the 2nd BOOST circuits.
- 3. double photovoltaic input circuits as claimed in claim 2, it is characterised in that the switching switch group further includes：D.C. contactor (KM), is connected to the tie point of the first switch unit and the first BOOST circuits and described Between the tie point of second switch unit and the 2nd BOOST circuits.
- 4. double photovoltaic input circuits as claimed in claim 2 or claim 3, it is characterised in thatThe first switch unit includes first switch (K1) in parallel and the 3rd switch (K3)；The second switch unit includes second switch (K2) in parallel and the 4th switch (K4).
- 5. double photovoltaic input circuits as claimed in claim 4, it is characterised in that further include：First current-limiting resistance (R1), be connected to it is described 3rd switch (K3) where branch on；Second current-limiting resistance (R2), be connected to it is described 4th switch (K4) where branch on.
- A kind of 6. double photovoltaic input circuit control methods, it is characterised in that including：The electric signal of the first photovoltaic input (PV1+) and the electric signal of the second photovoltaic input (PV2+) are detected respectively；Judge that obtaining the electric signal of the first photovoltaic input (PV1+) and the electric signal of second photovoltaic input (PV2+) is The no judging result for meeting respective entry condition；It is used for the switch controlling signal of the corresponding photovoltaic input of characterization startup to the output of switching switch group according to the judging result.
- 7. double photovoltaic input circuit control methods as claimed in claim 6, it is characterised in thatWhen the judging result is：The electric signal of the first photovoltaic input (PV1+) meets its entry condition, second light When the electric signal of volt input (PV2+) does not meet its entry condition, the switch controlling signal includes：Disconnect first switch (K1) and second switch (K2), the switch of closure the 3rd (K3), with to the first photovoltaic input (PV1+) Charge in circuit；After charging complete, closure first switch (K1) and D.C. contactor (KM), disconnects the 3rd and switchs (K3), so that described the One photovoltaic input (PV1+) operates in independent boost mode.
- 8. double photovoltaic input circuit control methods as claimed in claim 6, it is characterised in thatWhen the judging result is：The electric signal of the second photovoltaic input (PV2+) meets its entry condition, first light When the electric signal of volt input (PV1+) does not meet its entry condition, the switch controlling signal includes：Disconnect first switch (K1) and second switch (K2), the switch of closure the 4th (K4), with to the second photovoltaic input (PV2+) Charge in circuit；After charging complete, closure second switch (K2) and D.C. contactor (KM), disconnects the 4th and switchs (K4), so that described the Two photovoltaics input (PV2+) operates in independent boost mode.
- 9. double photovoltaic input circuit control methods as described in claim 6-8 any one, it is characterised in thatWhen the judging result is：The electric signal and second photovoltaic of the first photovoltaic input (PV1+) input (PV2+) When electric signal is satisfied by respective entry condition, the switch controlling signal includes：First switch (K1) and second switch (K2), the switch of closure the 3rd (K3) and the 4th switch (K4) are disconnected, with to the first light The circuit of volt input (PV1+) and the circuit of the second photovoltaic input (PV2+) are charged；After charging complete, closure first switch (K1) and second switch (K2), disconnect the 3rd switch (K3), the 4th switch (K4) With D.C. contactor (KM), operated in staggeredly so that first photovoltaic input (PV1+) and second photovoltaic input (PV2+) Paralleling model.
- A kind of 10. PV air-conditioner, it is characterised in that including：Wind turbine；Double photovoltaic input circuits as described in claim 1-5 any one, power supply is provided to the wind turbine.
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| CN201710930396.3A CN108011514A (en) | 2017-10-09 | 2017-10-09 | Photovoltaic air conditioner, double photovoltaic input circuit and control method thereof |
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| CN201710930396.3A CN108011514A (en) | 2017-10-09 | 2017-10-09 | Photovoltaic air conditioner, double photovoltaic input circuit and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167392A (en) * | 2018-10-09 | 2019-01-08 | 珠海格力电器股份有限公司 | System control method, photovoltaic system and air conditioning system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621394A (en) * | 2012-03-30 | 2012-08-01 | 广东易事特电源股份有限公司 | System and method for detecting insulation resistance to ground of dual-branch input photovoltaic grid-connected inverter |
| CN102857101A (en) * | 2012-09-03 | 2013-01-02 | 无锡中星微电子有限公司 | Multi-input single-output DC (direct current)/DC converter |
| CN103051182A (en) * | 2013-01-18 | 2013-04-17 | 重庆大学 | Variable-structure dual-input direct-current converter |
| CN103296738A (en) * | 2013-06-25 | 2013-09-11 | 厦门众芯电气设备有限公司 | Dual standby saving type direct current power supply system |
| CN104811036A (en) * | 2014-01-28 | 2015-07-29 | 台达电子企业管理（上海）有限公司 | Multi-source power supply system and control method thereof |
| CN206517369U (en) * | 2017-01-23 | 2017-09-22 | 特变电工西安电气科技有限公司 | A kind of photovoltaic system positive and negative busbar voltage lifting circuit |
| CN207368878U (en) * | 2017-10-09 | 2018-05-15 | 珠海格力电器股份有限公司 | Photovoltaic air conditioner and double-photovoltaic input circuit thereof |
-
2017
- 2017-10-09 CN CN201710930396.3A patent/CN108011514A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621394A (en) * | 2012-03-30 | 2012-08-01 | 广东易事特电源股份有限公司 | System and method for detecting insulation resistance to ground of dual-branch input photovoltaic grid-connected inverter |
| CN102857101A (en) * | 2012-09-03 | 2013-01-02 | 无锡中星微电子有限公司 | Multi-input single-output DC (direct current)/DC converter |
| CN103051182A (en) * | 2013-01-18 | 2013-04-17 | 重庆大学 | Variable-structure dual-input direct-current converter |
| CN103296738A (en) * | 2013-06-25 | 2013-09-11 | 厦门众芯电气设备有限公司 | Dual standby saving type direct current power supply system |
| CN104811036A (en) * | 2014-01-28 | 2015-07-29 | 台达电子企业管理（上海）有限公司 | Multi-source power supply system and control method thereof |
| CN206517369U (en) * | 2017-01-23 | 2017-09-22 | 特变电工西安电气科技有限公司 | A kind of photovoltaic system positive and negative busbar voltage lifting circuit |
| CN207368878U (en) * | 2017-10-09 | 2018-05-15 | 珠海格力电器股份有限公司 | Photovoltaic air conditioner and double-photovoltaic input circuit thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167392A (en) * | 2018-10-09 | 2019-01-08 | 珠海格力电器股份有限公司 | System control method, photovoltaic system and air conditioning system |
| CN109167392B (en) * | 2018-10-09 | 2020-07-24 | 珠海格力电器股份有限公司 | System control method, photovoltaic system and air conditioning system |
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