CN206542242U - A kind of photovoltaic direct-flow air conditioner electric power system interactive with power network - Google Patents
A kind of photovoltaic direct-flow air conditioner electric power system interactive with power network Download PDFInfo
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- CN206542242U CN206542242U CN201720130678.0U CN201720130678U CN206542242U CN 206542242 U CN206542242 U CN 206542242U CN 201720130678 U CN201720130678 U CN 201720130678U CN 206542242 U CN206542242 U CN 206542242U
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- photovoltaic
- direct
- air conditioner
- flow air
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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 is related to a kind of photovoltaic direct-flow air conditioner electric power system interactive with power network, it is characterised in that：Including photovoltaic battery panel, two-way independence MPPT photovoltaic trackings module and DC frequency-changing module, wherein：Photovoltaic battery panel：For converting the solar into direct current, and it is supplied to two-way independence MPPT photovoltaic tracking modules；Two-way independence MPPT photovoltaic tracking modules：For being supplied to direct-flow air conditioner frequency conversion board after the direct current electric boost that exports photovoltaic battery panel；DC frequency-changing module：Direct-flow air conditioner frequency conversion board is supplied to for line voltage to be converted into direct current；The utility model is：By changing power supply mode of the prior art to direct-flow air conditioner, without battery and switching switch, the function of supplying power of the preferential power network supplement of photovoltaic, photovoltaic electric energy and the grid-connected work of power network are realized, realization is uninterruptedly powered to direct-flow air conditioner.
Description
Technical field
The utility model is related to field of household appliances, more particularly to a kind of photovoltaic direct-flow air conditioner electric power system interactive with power network.
Background technology
Domestic photovoltaic application uses inverter to need batteries to store energy and photovoltaic to air-conditioning common inverter of powering substantially
Controller, which coordinates, can just think that air-conditioning is powered, and system hardware structure is complicated, and hardware investment claims at all too high, and photovoltaic has to pass through multistage
Conversion, the complete machine operating efficiency of power supply is very low, and system failure rate is higher.The maximum shortcoming of this topological photovoltaic application system is
Battery be lost and depreciation is difficult to receive, generally, battery one, be accomplished by within 2 years change, it is thus this topological
Photovoltaic application system is not suitable for air-conditioning and powered.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is that providing one kind does not need battery and adaptive
The direct-flow air conditioner electric power system for answering the photovoltaic of the preferential power network supplement of photovoltaic interactive with power network.
What the technical solution of the utility model was realized in：A kind of photovoltaic direct-flow air conditioner interactive with power network, which is powered, is
System, it is characterised in that：Including photovoltaic battery panel, two-way independence MPPT photovoltaic trackings module and DC frequency-changing module, wherein：
Photovoltaic battery panel：For converting the solar into direct current, and it is supplied to two-way independence MPPT photovoltaic tracking modules；
Two-way independence MPPT photovoltaic tracking modules：For being supplied to direct current after the direct current electric boost that exports photovoltaic battery panel
Air-conditioning frequency conversion board；
DC frequency-changing module：Direct-flow air conditioner frequency conversion board is supplied to for line voltage to be converted into direct current.
Preferably, described two-way independence MPPT photovoltaic trackings module turns including two step-up DC/DC parallel with one another
Parallel operation and central processing unit, the input of each step-up DC/DC converters are connected with central processing unit respectively, and each step-up DC/
The input that the output end of DC converters converges into all the way with direct-flow air conditioner frequency conversion board is connected.
Preferably, described DC frequency-changing module is AC/DC converters.
Preferably, described step-up DC/DC converters include inductance, diode and resistance, inductance, diode, electric capacity
And resistance is sequentially connected in series.
By using above-mentioned technical proposal, by changing power supply mode of the prior art to direct-flow air conditioner, without electric power storage
Pond and switching switch, realize the function of supplying power of the preferential power network supplement of photovoltaic, photovoltaic electric energy and the grid-connected work of power network, and use
Step-up DC/DC converters and AC/DC converters are used in combination, and improve operating efficiency, two-way independence MPPT photovoltaic tracking moulds
Block, the maximum power points of tracking photovoltaic cell, and photovoltaic are prior to power network, power network supplement, photovoltaic battery panel and power network dual power supply
Power supply, is realized to DC frequency converting air-conditioner uninterrupted power supply.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model embodiment theory diagram.
Fig. 2 is two-way independence MPPT photovoltaic tracking module principle block diagrams in the utility model embodiment.
Fig. 3 is two-way independence MPPT photovoltaic tracking module circuit diagrams in the utility model embodiment.
Fig. 4 is two-way independence MPPT photovoltaic tracking module PWM pulsewidth figures in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in Fig. 1-Fig. 4, the utility model discloses a kind of photovoltaic and the interactive direct-flow air conditioner electric power system of power network,
In the utility model specific embodiment, including photovoltaic battery panel（PV1、PV2）, two-way independence MPPT photovoltaic trackings module 2 and
DC frequency-changing module, wherein：
Photovoltaic battery panel：For converting the solar into direct current, and it is supplied to two-way independence MPPT photovoltaic tracking modules；
Two-way independence MPPT photovoltaic trackings module 2：It is straight for being supplied to after the direct current electric boost that exports photovoltaic battery panel
Flow air-conditioning frequency conversion board；
DC frequency-changing module：Direct-flow air conditioner frequency conversion board is supplied to for line voltage to be converted into direct current, then by straight
Stream air-conditioning frequency conversion board supplies electricity to the corresponding matching component of air-conditioning and used.
In the utility model specific embodiment, the output end of described two-way independence MPPT photovoltaic tracking modules is also connected with
There is electric capacity C1.
In the utility model specific embodiment, described two-way independence MPPT photovoltaic trackings module includes parallel with one another
Two step-up DC/DC converters and central processor CPU, the inputs of each step-up DC/DC converters respectively with centre
Device CPU connections are managed, the input that the output end of each step-up DC/DC converters is converged into all the way with direct-flow air conditioner frequency conversion board 1 is connected.
In the utility model specific embodiment, described DC frequency-changing module is AC/DC converters.
As shown in figure 3, in the utility model specific embodiment, described step-up DC/DC converters include inductance L,
Diode D and resistance R, inductance L, diode D, electric capacity C1 and resistance R are sequentially connected in series.
By using above-mentioned technical proposal, by changing power supply mode of the prior art to direct-flow air conditioner, without electric power storage
Pond and switching switch, realize the function of supplying power of the preferential power network supplement of photovoltaic, photovoltaic electric energy and the grid-connected work of power network, and use
Step-up DC/DC converters and AC/DC converters are used in combination, and improve operating efficiency.
Wherein, the DC/DC converters of two-way independence built in two-way independence MPPT photovoltaic tracking modules, each with independent
MPPT following functions, are responsible for photovoltaic voltage entering direct-flow air conditioner frequency conversion by being stabilized to 380V after the boosting of DC/DC converters
Plate.When photovoltaic abundance is, the electric energy after photovoltaic boosts through DC/DC converters injects direct-flow air conditioner frequency conversion board, and power network turns through AC/DC
The electric energy of injection direct-flow air conditioner frequency conversion board can be reduced after parallel operation conversion, and this is due to that DC/DC converters have automatic preferential power supply
Function, the voltage of DC/DC converters boosting output can be from motion tracking and more than the voltage of AC/DC converters output, so that light
Lie prostrate electric energy of the utilization prior to power network of electric energy；After the electric energy of photovoltaic weakens（Illumination weakens）, by DC/DC converters
After MPPT tracking, the energy reduction of output, the energy of final injection direct-flow air conditioner frequency conversion board is also reduced, and now power network is through AC/DC
The electric energy of direct-flow air conditioner frequency conversion board is injected after converter transform to be increased, and the interaction for completing photovoltaic and power network is complementary empty to direct current
Frequency conversion board is adjusted to power.
PWM of each DC/DC converter in central processing unit（Pulse width prescription）Under control, boosting output stabilization is completed
380V DC voltages, and the maximal power tracing of photovoltaic is carried out automatically, exported with the ceiling capacity for ensuring photovoltaic.Pass through regulation
PWM duty ratio, to complete the stabilization of output voltage.Central processing unit is according to photovoltaic electric current and the computing of photovoltaic operating voltage
Photovoltaic power output is obtained, changes PWM pulsewidth, so as to change the output of DC/DC converters（Equal to changing in load
Resistance）, it is final so that the internal resistance of photovoltaic battery panel completes maximal power tracing equal to load impedance.
The advantage that the DC/DC converters of two-way independence are respectively configured in the photovoltaic battery panel of wherein two groups independences is as follows：It is existing
Household roof have north and south both direction direction, referred to as sunny side and the back（Distinguished by illumination condition）If, sunny side and the back
Photovoltaic battery panel be all merged together, because the illumination condition of sunny side and the back is different, the voltage and most of photovoltaic output
High-power point is also different, and being merged can cause the MPPT maximum power point tracking of photovoltaic to fail together, the energy that photovoltaic can be allowed to export
It is greatly reduced；The DC/DC converters of two groups of independences, which meet sunny side and the series connection of back varying number, different illumination intensity series connection, to be made
With.
The technical characterstic of two-way DC/DC converters：
A, as shown in figure 4, staggeredly（Two-way）PWM pulsewidth modulations, make the DC voltage of output more steady, reduce pulsation,
As shown in figure 4, above-mentioned when being staggeredly driven to that wherein peak is opened all the way, another road shut-off intermeshes.
B, automatic homogeneous flow technology for connecting, two-way MPPT are merged as after all the way, each DC/DC converter can be in central processing unit
Under control, each DC/DC converter automatic current equalizing is allowed, that is to say, that the operating current of each DC/DC converter is the same
, be conducive to improving the working life and operating efficiency of DC/DC converters, be allowed to be operated in optimum state.
C, the DC/DC converters use COOLMOS, support very high-frequency operation, reduce the volume of inductance and hardware into
This, only by improving working frequency, can just realize the module high power density, this be due to photovoltaic application in air-conditioning,
The space of original Air-conditioner design is limited, so the volume and operating efficiency to DC/DC converters require very high, power module body
The small, power density of product is high.
D, input automatic current limiting, DC/DC converters meeting volitional check input current is to protect the module safety, according to photovoltaic
The tandem working principle of battery, each cell panel has a maximum output current value, such as 250W photovoltaic battery panel
Maximum output current is 8A or so, in order to prevent user error by multiple access, and is loaded simultaneously specified also greater than the module
During power, the module overcurrent overheat can be caused and exception, user is illegal or mistake should due to input automatic current limiting, having prevented
With causing unit exception.
E, flexible input, because the PFC of air-conditioning is also a kind of first class boost mode of operation, if DC/DC converters boost
Output control is not good, will influence can air-conditioning previous stage PFC work, it is abnormal to also result in rear stage frequency conversion board, the module
Electric energy is injected into direct-flow air conditioner frequency conversion board by flexibility, allows PFC electric energy to exit at leisure, it is ensured that photovoltaic electric energy and electrical network complementation to
Air-conditioning is powered.
F, needn't battery support powered with regard to air-conditioning can be met, the photovoltaic application of general air-conditioning needs battery accumulation of energy to match somebody with somebody
Conjunction could work, and the system cleverly organically combines photovoltaic and power network electric energy, it is not necessary to batteries to store energy, reduction
The hardware device cost input of system, when photovoltaic electric energy is sufficient, air-conditioning, which is powered, all to be undertaken by photovoltaic, work as photovoltaic electric
When can be not enough, power network electric energy automatically takes on power supply, and the adaptive complementary duty of the two electric energy, seamless exchange is truly realized photovoltaic
Green energy resource maximum is utilized.
G, the photovoltaic input of support wide scope, input voltage 50-380V energy normal works, that is to say, that 2-9 can be supported
The photovoltaic battery panel tandem working of piece.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of photovoltaic direct-flow air conditioner electric power system interactive with power network, it is characterised in that：It is independent including photovoltaic battery panel, two-way
MPPT photovoltaic trackings module and DC frequency-changing module, wherein：
Photovoltaic battery panel：For converting the solar into direct current, and it is supplied to two-way independence MPPT photovoltaic tracking modules；
Two-way independence MPPT photovoltaic tracking modules：For tracking maximum photovoltaic power point, and the direct current that photovoltaic battery panel is exported
Direct-flow air conditioner frequency conversion board is supplied to after electric boost；
DC frequency-changing module：Direct-flow air conditioner frequency conversion board is supplied to for line voltage to be converted into direct current.
2. the photovoltaic according to claim 1 direct-flow air conditioner electric power system interactive with power network, it is characterised in that：Described is double
Road independence MPPT photovoltaic trackings module includes two step-up DCs/DC converters and central processing unit parallel with one another, each boosting
The input of type DC/DC converters is connected with central processing unit respectively, and the output end of each step-up DC/DC converters is converged into all the way
It is connected with the input of direct-flow air conditioner frequency conversion board.
3. the photovoltaic according to claim 1 direct-flow air conditioner electric power system interactive with power network, it is characterised in that：Described is straight
Rheology frequency module is AC/DC converters.
4. the photovoltaic according to claim 2 direct-flow air conditioner electric power system interactive with power network, it is characterised in that：Described liter
Die mould DC/DC converters include inductance, diode and resistance, and inductance, diode, electric capacity and resistance are sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720130678.0U CN206542242U (en) | 2017-02-14 | 2017-02-14 | A kind of photovoltaic direct-flow air conditioner electric power system interactive with power network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720130678.0U CN206542242U (en) | 2017-02-14 | 2017-02-14 | A kind of photovoltaic direct-flow air conditioner electric power system interactive with power network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712258A (en) * | 2017-02-14 | 2017-05-24 | 台州航宁制冷设备有限公司 | Power supply system for photovoltaic and power grid interactive direct current air conditioner |
| CN107902110A (en) * | 2017-11-15 | 2018-04-13 | 上海空间电源研究所 | A kind of highly integrated MPPT standardized modules of open architecture |
| CN110460105A (en) * | 2019-09-26 | 2019-11-15 | 珠海格力电器股份有限公司 | Starting method, controller and the PV air-conditioner system of PV air-conditioner system |
-
2017
- 2017-02-14 CN CN201720130678.0U patent/CN206542242U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712258A (en) * | 2017-02-14 | 2017-05-24 | 台州航宁制冷设备有限公司 | Power supply system for photovoltaic and power grid interactive direct current air conditioner |
| CN107902110A (en) * | 2017-11-15 | 2018-04-13 | 上海空间电源研究所 | A kind of highly integrated MPPT standardized modules of open architecture |
| CN107902110B (en) * | 2017-11-15 | 2021-01-26 | 上海空间电源研究所 | Open-framework high-integration MPPT standardized module |
| CN110460105A (en) * | 2019-09-26 | 2019-11-15 | 珠海格力电器股份有限公司 | Starting method, controller and the PV air-conditioner system of PV air-conditioner system |
| WO2021057178A1 (en) * | 2019-09-26 | 2021-04-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system starting method, controller, and photovoltaic air conditioning system |
| US11859840B2 (en) | 2019-09-26 | 2024-01-02 | Gree Electric Appliances, Inc. Of Zhuhai | Photovoltaic air conditioning system startup method, controller and photovoltaic air conditioning system |
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