CN106208192A - A kind of microgrid type solar recharging stake and charging method - Google Patents
A kind of microgrid type solar recharging stake and charging method Download PDFInfo
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- CN106208192A CN106208192A CN201610554009.6A CN201610554009A CN106208192A CN 106208192 A CN106208192 A CN 106208192A CN 201610554009 A CN201610554009 A CN 201610554009A CN 106208192 A CN106208192 A CN 106208192A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000011217 control strategy Methods 0.000 claims description 5
- 238000003306 harvesting Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
-
- H02J3/385—
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
Abstract
nullThe present invention relates to a kind of microgrid type solar recharging stake and charging method，Charging pile includes solar panel (101)、MPPT circuit (102)、Main control unit (103)、Interface inverter circuit (105)、Grid charging circuit (107)、Grid-connected inverter circuit (108) and micro-capacitance sensor (109)，Solar panel (101) is powered to dc bus (110) by MPPT circuit (102)，Dc bus (110) is connected to charging socket (106) by interface inverter circuit (105)，Dc bus (110) is connected to micro-capacitance sensor (109) also by parallel network reverse electric current (108)，Micro-capacitance sensor (109) is connected to dc bus (110) also by grid charging circuit (107)，Main control unit (103) respectively with MPPT circuit (102)、Interface inverter circuit (105)、Grid charging circuit (107) and grid-connected inverter circuit (108) signal connect.Compared with prior art, the present invention has energy conservation simple in construction, low cost and the advantage of charging pile good stability.
Description
Technical field
The present invention relates to a kind of charging pile, especially relate to a kind of microgrid type solar recharging stake and charging method.
Background technology
New-energy electric vehicle is the inexorable trend of future automobile industry trend, and solving charging electric vehicle problem can promote
Enter new-energy automobile Rapid Popularization.As fuel-engined vehicle be unable to do without gas station, electric automobile also be unable to do without charging pile, utilizes too
Sun also can be the direction of implementing of following charging pile design as the energy sources of charging pile, design one microgrid type solar recharging
The comparison that stake just shows is urgent.But, affected by solar energy generating efficiency instability, charging process can be run into the sun
Energy electricity shortage or the problem of solar powered surplus, how in the case of ensureing output voltage stabilization, reasonably realize electricity
Scheduling between net and photovoltaic energy, it has also become the top-priority problem of solar recharging stake.
Patent 102355023B provides a kind of light storage formula electric automobile charging and conversion electric station, and this charging and conversion electric station is by solar energy
Generated energy and the detection of accumulators store energy, it is achieved the switching of the energy between solar energy, accumulator and electrical network thus reach
To the Charge Management loaded and control.But this kind of structure is constantly in charging and discharging state because of accumulator, causes system
The problem that the life-span of device is short and cost is high.Meanwhile, judge defeated by detection solar panel and storage battery energy state
Energy relationship between entering and exporting, method is relative complex and feasibility is the highest.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of control method simple
And no storage battery declines net type solar recharging stake.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of microgrid type solar recharging stake, including solar panel, MPPT circuit, main control unit, interface inversion
Circuit, grid charging circuit, grid-connected inverter circuit and micro-capacitance sensor, described solar panel is female to direct current by MPPT circuit
Line is powered, and described dc bus is connected to charging socket by interface inverter circuit, and dc bus is also by parallel network reverse electricity
Stream is connected to micro-capacitance sensor, and micro-capacitance sensor is connected to dc bus also by grid charging circuit, described main control unit respectively with
MPPT circuit, interface inverter circuit, grid charging circuit and grid-connected inverter circuit signal connect, when after charging pile circuit ON,
The energy stream that solar panel is collected by MPPT circuit is sent on dc bus incessantly, for battery charging with grid-connected
Use.
Described charging pile also includes LCD display and arranges unit, described LCD display and arrange unit and pass through
485 buses are connected with main control unit, and the duty of charging pile is real-time transmitted to LCD display and setting by main control unit
Unit, is charged the Dynamic Announce of a job information, described LCD display and when arranging charging that unit arranges charging pile
Between.
Described solar panel organizes structure with MPPT circuit for one to one more.
A kind of method using described microgrid type solar recharging stake to be charged, described interface inverter circuit accepts
Energy stream on dc bus, carries out inversion process and obtains alternating current, then export to charging plug, and the charging for electric automobile makes
With.
Described MPPT circuit, interface inverter circuit, grid charging circuit and grid-connected inverter circuit is respectively by 485 buses
With main control unit communication, MPPT circuit sends voltage and the current parameters of solar panel to main control unit, interface
Inverter circuit is tracked detection to the dump energy of the load on charging socket, detection information back to main control unit.
Described main control unit realizes the energy cut-to-measure between solar energy and electrical network by multistage dc bus control strategy
Change and manage, specifically include: detection DC bus-bar voltage Udc also makes comparisons with control reference voltage UH, UM and the UL set, its
Middle UH, UM and UL are sequentially reduced,
As Udc >=UH, the energy that solar panel converts is more than charge requirement, and grid-connected inverse electrical equipment closes, and direct current is female
The energy stream of surplus is injected electrical network by line；
As UM ＜ Udc ＜ UH, the energy of solar panel is in and meets in the range of charge requirement, it is not necessary to micro-electricity
Net supplementary power, grid charging circuit disconnects；
As UL ＜ Udc≤UM, the energy of solar panel is completely used for charging, and grid-connected inverter circuit disconnects, and stops
Grid-connected conversion；
As Udc≤UL, the energy of input direct-current bus is less than output rechargeable energy, grid charging closing of circuit, deficiency
Energy is provided by grid charging circuit and supplements.
Described MPPT circuit includes P actuator, pi regulator and DC-DC converter, utilizes photovoltaic electric flow control policy
Realize the energy harvesting of solar panel, specifically include:
1) DC bus-bar voltage Udc is sampled, using deviation value △ Udc as the input signal of P actuator, △ Udc=
Udc_T-Udc, Udc_T are the DC bus-bar voltage upper limit set；
2) deviation value △ Udc is through P regulator output signal △ Ipv=K* △ Udc, wherein, as △ Udc > 0, K=0；
As △ Udc, < when 0, K is the constant more than 0；
3) the voltage Upv and electric current Ipv of solar panel is sampled, obtain current solaode by MPPT algorithm
The peak power electric current Ipv_mpp of plate；
4) making the input value Ipv_ref=Ipv_mpp+ △ Ipv-Ip of pi regulator, output valve is accounting for of DC-DC converter
Empty ratio D, is used for regulating DC-DC converter, and DC-DC converter outfan is connected to dc bus, reaches to control solar panel
The purpose of output electric current Ipv.
Compared with prior art, the invention have the advantages that
(1), after charging pile circuit ON, the energy stream that solar panel is collected by MPPT circuit transmits incessantly
On dc bus, for load with grid-connected, on the premise of ensureing that electric automobile charges normal, utilize to greatest extent too
Sun can generate electricity, and improves the utilization rate of solar energy.
(2) LCD display and unit is set can be charged the Dynamic Announce of a job information, the charging of charging pile is set
Time.
(3) solar energy generating efficiency is high, because using photovoltaic electric flow control policy can realize organizing solar panel also more
Connection mode inputs to dc bus, improves the generating efficiency often organizing solar panel.
(4) MPPT circuit sends voltage and the current parameters of solar panel to main control unit, interface inversion electricity
Road is tracked detection to the dump energy of the load on charging socket, detection information back to main control unit, is beneficial to real
Existing micro-capacitance sensor and solar energy intelligent scheduling and switching.
(5) energy conservation simple in construction, because multistage dc bus control strategy only needs the voltage by judging dc bus
Grade it may determine that go out current solar energy, electrical network and load between energy-balancing relation, be more suitable for practical operation use.
(6) MPPT circuit is by controlling solar panel output electric current Ipv, it is achieved the tracking of DC bus-bar voltage is adjusted
Joint.
(7) system uses no storage battery structure, is greatly reduced the cost of device, improves the service life of system.
Accompanying drawing explanation
Fig. 1 is system and the structured flowchart of the present invention；
Fig. 2 is microgrid type solar recharging stake main control flow chart of the present invention；
A kind of photovoltaic electric flow pattern control strategy flow chart that Fig. 3 provides for the present invention；
Fig. 4 is for using many group solar panels and MPPT circuit structure diagram.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implement, give detailed embodiment and concrete operating process, but protection scope of the present invention be not limited to
Following embodiment.
Embodiment
As it is shown in figure 1, a kind of microgrid type solar recharging stake, including solar panel 101, MPPT circuit 102, master control
Unit 103 processed, interface inverter circuit 105, grid charging circuit 107, grid-connected inverter circuit 108 and micro-capacitance sensor 109, solar-electricity
Pond plate 101 is powered to dc bus 110 by MPPT circuit 102, and dc bus 110 is connected to by interface inverter circuit 105
Charging socket 106, dc bus 110 is connected to micro-capacitance sensor 109 also by parallel network reverse electric current 108, and micro-capacitance sensor 109 is also by electricity
Net charging circuit 107 is connected to dc bus 110, main control unit 103 respectively with MPPT circuit 102, interface inverter circuit
105, grid charging circuit 107 and grid-connected inverter circuit 108 signal connect, when, after charging pile circuit ON, MPPT circuit 102 will
The energy stream that solar panel 101 collects is sent on dc bus 110 incessantly, makes with grid-connected for battery charging
With.
Charging pile also includes LCD display and arranges unit 104, LCD display and arrange unit 104 by 485 buses
Being connected with main control unit 103, the duty of charging pile is real-time transmitted to LCD display and setting by main control unit 103
Unit 104, is charged the Dynamic Announce of a job information, LCD display and when arranging charging that unit 104 arranges charging pile
Between.
Solar panel 101 organizes structure with MPPT circuit 102 for one to one more.
A kind of method using microgrid type solar recharging stake to be charged, interface inverter circuit 105 accepts dc bus
Energy stream on 110, carries out inversion process and obtains alternating current, then export to charging plug 106, and the charging for electric automobile makes
With.
MPPT circuit 102, interface inverter circuit 105, grid charging circuit 107 and grid-connected inverter circuit 108 pass through respectively
485 buses communicate with main control unit 103, and voltage and the current parameters of solar panel 101 are sent to by MPPT circuit 102
Main control unit 103, interface inverter circuit 106 is tracked detection to the dump energy of the load on charging socket 106, inspection
Measurement information returns to main control unit 103.
In Fig. 1, thin arrow represents signal stream, and hollow arrow represents energy stream.
Main control unit 103 by multistage dc bus control strategy realize between solar energy and electrical network energy switching with
Management, specifically includes: detection dc bus 110 voltage Udc also makes comparisons with control reference voltage UH, UM and the UL set, its
Middle UH, UM and UL are sequentially reduced,
As Udc >=UH, the energy of input direct-current bus 110 is more than output rechargeable energy, and grid-connected inverter circuit 108 closes
Closing, grid-connected inverter circuit 108 is by energy injection micro-capacitance sensor 109 unnecessary for dc bus 110；
As UM ＜ Udc ＜ UH, the energy of input direct-current bus 110 mutually balances with output rechargeable energy, parallel network reverse
Circuit 108 keeps closure state, and grid charging circuit 107 disconnects；
As UL ＜ Udc≤UM, the energy of solar panel is completely used for charging, and grid-connected inverter circuit 108 disconnects, and stops
Only grid-connected conversion；
As Udc≤UL, 110 energy of input direct-current bus break less than output rechargeable energy, grid-connected inverter circuit 108
Opening, grid charging circuit 107 closes, and not enough energy is provided by grid charging circuit and supplements.
As in figure 2 it is shown, control flow includes:
S1, after charging pile circuit ON, by using LCD display and arranging unit 104 and arrange the charging interval, and leads to
Cross the output current information that interface inverter circuit 106 detects；
S2, main control unit 103 judges that charging pile the most charges.If the output electric current detected is zero, then conclude
System is not in charging, and grid-connected inverse electrical equipment 108 closes, and the energy that solar panel 101 converts is for grid-connected use；If
The output electric current detected is not zero, then judge dc bus 110 real-time voltage Udc and UH relation: when Udc is more than UH, this
Time the energy that converts of solar panel 101 more than charge requirement, grid-connected inverse electrical equipment 108 closes, and dc bus 110 is by surplus
Energy stream injects grid-connected inverter circuit 108, for grid-connected use；When Udc is less than UH, then judge Udc Yu UM relation, if
Udc is more than UM, and now the energy of solar panel 101 is in and meets in the range of charge requirement, it is not necessary to micro-capacitance sensor 109 is mended
Filling power supply, grid charging circuit 107 disconnects；If Udc is less than UM, now the energy of solar panel 101 is completely used for charging,
Grid-connected inverter circuit 108 disconnects, and stops grid-connected conversion.Then Udc Yu UL relation is judged, if Udc is more than UL, now solar-electricity
The energy of pond plate 101 is supplied to charging plug 106 after interface inverter circuit 106 processes；If Udc is less than UL, now, the sun
Energy cell panel 101 energy electricity shortage, it is impossible to enough demands meeting power supply, grid charging circuit 107 closes, and micro-capacitance sensor 109 is supplementary
Power supply, it is ensured that direct current bus bar pressure is stable, makes interface inverter circuit 105 can carry out normal inversion process, makes load energy
Enough charge normal.
Fig. 3 is a kind of photovoltaic electric flow control policy flow chart that MPPT circuit 102 uses, and MPPT circuit 102 includes that P regulates
Device, pi regulator and DC-DC converter, utilize photovoltaic electric flow control policy to realize the energy harvesting of solar panel 101, tool
Body includes:
1) dc bus 110 voltage Udc is sampled, using deviation value △ Udc as the input signal of P actuator, △ Udc=
Udc_T-Udc, Udc_T are dc bus 110 upper voltage limit set；
2) deviation value △ Udc is through P regulator output signal △ Ipv=K* △ Udc, wherein, as △ Udc > 0, K=0；
As △ Udc, < when 0, K is the constant more than 0；
3) the voltage Upv and electric current Ipv of solar panel 101 is sampled, obtain current solar energy by MPPT algorithm
The peak power electric current Ipv_mpp of cell panel 101；
4) making the input value Ipv_ref=Ipv_mpp+ △ Ipv-Ip of pi regulator, output valve is accounting for of DC-DC converter
Empty ratio D, is used for regulating DC-DC converter, D=P1*Ipv_ref+P2* ∑ Ipv_ref, and wherein P1 is the ratio system of pi regulator
Number, P2 is integral coefficient, and DC-DC converter outfan is connected to dc bus 110, reaches to control solar panel output electric current
The purpose of Ipv.DC-DC conversion circuit prioritizing selection Boost circuit structure.
Fig. 4 is a kind of to use many group solar panels and MPPT circuit structure diagram, including organize more solar panel and
MPPT circuit, and often group solar panel Jun You mono-road MPPT circuit, such as solar panel 201,202,203 correspondence respectively
MPPT circuit 301,302,303, all of MPPT circuit output end all receives at dc bus, this structure and single group solar-electricity
Pond plate is compared, and has higher reliability.
Claims (7)
1. a microgrid type solar recharging stake, it is characterised in that include solar panel (101), MPPT circuit (102),
Main control unit (103), interface inverter circuit (105), grid charging circuit (107), grid-connected inverter circuit (108) and micro-capacitance sensor
(109), described solar panel (101) is powered to dc bus (110) by MPPT circuit (102), described direct current
Bus (110) is connected to charging socket (106) by interface inverter circuit (105), and dc bus (110) is also by parallel network reverse
Electric current (108) is connected to micro-capacitance sensor (109), and micro-capacitance sensor (109) is connected to dc bus also by grid charging circuit (107)
(110), described main control unit (103) respectively with MPPT circuit (102), interface inverter circuit (105), grid charging circuit
(107) connect, when, after charging pile circuit ON, MPPT circuit (102) is by solaode with grid-connected inverter circuit (108) signal
The energy stream that plate (101) collects is sent on dc bus (110) incessantly, for battery charging with grid-connected.
A kind of microgrid type solar recharging stake the most according to claim 1, it is characterised in that described charging pile also includes
LCD display and unit (104) is set, described LCD display and unit (104) is set by 485 buses and main control list
Unit (103) connects, and the duty of charging pile is real-time transmitted to LCD display and arranges unit by main control unit (103)
(104), it is charged the Dynamic Announce of a job information, described LCD display and unit (104) is set charging pile is set
Charging interval.
A kind of microgrid type solar recharging stake the most according to claim 1, it is characterised in that described solar panel
(101) organize structure with MPPT circuit (102) for one to one more.
4. use the method that a kind of microgrid type solar recharging stake as described in claims 1 to 3 is arbitrary is charged, its
Being characterised by, described interface inverter circuit (105) accepts the energy stream on dc bus (110), carries out inversion process and obtains
Alternating current, then export to charging plug (106), for the charging of electric automobile.
Method the most according to claim 4, it is characterised in that described MPPT circuit (102), interface inverter circuit
(105), grid charging circuit (107) and grid-connected inverter circuit (108) are led to main control unit (103) by 485 buses respectively
Letter, MPPT circuit (102) sends voltage and the current parameters of solar panel (101) to main control unit (103), interface
Inverter circuit (106) is tracked detection to the dump energy of the load on charging socket (106), and detection information back is given main
Control unit (103).
Method the most according to claim 5, it is characterised in that described main control unit (103) is female by multistage direct current
Line traffic control strategy realizes the energy switching between solar energy and electrical network and management, specifically includes: detection dc bus (110) voltage
Udc also makes comparisons with control reference voltage UH, UM and the UL set, and wherein UH, UM and UL are sequentially reduced,
As Udc >=UH, grid-connected inverse electrical equipment (108) closes, and the energy stream of surplus is injected electrical network by dc bus (110)；
As UM ＜ Udc ＜ UH, grid charging circuit (107) disconnects；
As UL ＜ Udc≤UM, the energy of solar panel (101) is completely used for charging, and grid-connected inverter circuit (108) breaks
Open, stop grid-connected conversion；
As Udc≤UL, the energy of input direct-current bus (110) is less than output rechargeable energy, and grid charging circuit (107) closes
Closing, not enough energy is provided by grid charging circuit (107) and supplements.
Method the most according to claim 4, it is characterised in that described MPPT circuit (102) includes that P actuator, PI adjust
Joint device and DC-DC converter, utilize photovoltaic electric flow control policy to realize the energy harvesting of solar panel (101), specifically wrap
Include:
1) dc bus (110) voltage Udc is sampled, using deviation value △ Udc as the input signal of P actuator, △ Udc=
Udc_T-Udc, Udc_T are dc bus (110) upper voltage limit set；
2) deviation value △ Udc is through P regulator output signal △ Ipv=K* △ Udc, wherein, as △ Udc > 0, K=0；Work as △
< when 0, K is the constant more than 0 to Udc；
3) the voltage Upv and electric current Ipv of solar panel (101) is sampled, obtain current solar-electricity by MPPT algorithm
The peak power electric current Ipv_mpp of pond plate (101)；
4) making the input value Ipv_ref=Ipv_mpp+ △ Ipv-Ip of pi regulator, output valve is the dutycycle of DC-DC converter
D, is used for regulating DC-DC converter, and DC-DC converter outfan is connected to dc bus (110), reaches to control solar panel
The purpose of output electric current Ipv.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554009.6A CN106208192B (en) | 2016-07-14 | 2016-07-14 | A kind of microgrid type solar recharging stake and charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554009.6A CN106208192B (en) | 2016-07-14 | 2016-07-14 | A kind of microgrid type solar recharging stake and charging method |
Publications (2)
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| CN106208192A true CN106208192A (en) | 2016-12-07 |
| CN106208192B CN106208192B (en) | 2018-12-21 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013076956A1 (en) * | 2011-11-21 | 2013-05-30 | パナソニック株式会社 | Power supply system |
| CN205104903U (en) * | 2015-10-27 | 2016-03-23 | 中广核太阳能开发有限公司 | Non - contravariant type light stores up little electric wire netting of direct current system for modern architecture |
| CN105490348A (en) * | 2016-01-18 | 2016-04-13 | 国家电网公司 | Electric vehicle charging/discharging system based on photovoltaic array and energy storage unit |
| CN105490372A (en) * | 2016-01-08 | 2016-04-13 | 辽宁北方节能股份有限公司 | Solar alternating current charging pile capable of automatically switching power supplies |
-
2016
- 2016-07-14 CN CN201610554009.6A patent/CN106208192B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013076956A1 (en) * | 2011-11-21 | 2013-05-30 | パナソニック株式会社 | Power supply system |
| CN205104903U (en) * | 2015-10-27 | 2016-03-23 | 中广核太阳能开发有限公司 | Non - contravariant type light stores up little electric wire netting of direct current system for modern architecture |
| CN105490372A (en) * | 2016-01-08 | 2016-04-13 | 辽宁北方节能股份有限公司 | Solar alternating current charging pile capable of automatically switching power supplies |
| CN105490348A (en) * | 2016-01-18 | 2016-04-13 | 国家电网公司 | Electric vehicle charging/discharging system based on photovoltaic array and energy storage unit |
Non-Patent Citations (1)
| Title |
|---|
| 刘飞: "独立光伏发电系统的MPPT及并网控制研究", 《中国优秀收拾论文学位论文数据库》 * |
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| CN106208192B (en) | 2018-12-21 |
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