CN107425808A - It is a kind of to rapidly switch off system applied to photovoltaic generation - Google Patents
It is a kind of to rapidly switch off system applied to photovoltaic generation Download PDFInfo
- Publication number
- CN107425808A CN107425808A CN201710422842.XA CN201710422842A CN107425808A CN 107425808 A CN107425808 A CN 107425808A CN 201710422842 A CN201710422842 A CN 201710422842A CN 107425808 A CN107425808 A CN 107425808A
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- China
- Prior art keywords
- photovoltaic
- photovoltaic module
- switch
- rapidly
- junction box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003068 static effect Effects 0.000 claims description 6
- 238000010248 power generation Methods 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 description 12
- 230000005611 electricity Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- 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
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
Abstract
It is a kind of to rapidly switch off system applied to photovoltaic generation.It is related to field of photovoltaic power generation, more particularly to a kind of rapidly switches off system applied to photovoltaic generation.With high security and reliability.It is serially connected with photovoltaic module array, including rapidly switching off photovoltaic junction box, the photovoltaic module array includes some photovoltaic modulies, some photovoltaic modulies passed through after being connected in series by conflux/inversion box is delivered to AC network, AC network and conflux/inversion box between be provided with alternating-current system, concatenation rapidly switches off photovoltaic junction box between the adjacent photovoltaic module, for turning off photovoltaic module；The alternating-current system includes main switch and secondary lock, the main switch located at AC network and conflux/inversion box between, the secondary lock includes supply convertor, hand switch and automatic switch, the automatic switch and hand switch connect supply convertor respectively, and the supply convertor connection rapidly switches off photovoltaic junction box.There is the advantages of safe, stability is good on the whole.
Description
Technical field
The present invention relates to field of photovoltaic power generation, more particularly to a kind of rapidly switch off system applied to photovoltaic generation.
Background technology
Nowadays photovoltaic generation has been widely used, but has a problem to trouble people more and more, be exactly when
Photovoltaic power station system breaks down when needing to enter maintenance, or such as earthquake, fire, floods occur needs salvor to enter
When, even if shut-off power network power supply, because photovoltaic module is still generating electricity, there are still the height that may jeopardize life safety in system
Piezoelectricity energy.
Therefore, provide that personnel enter in safety margin in 2017NEC690.12 photovoltaic system safety standards, it is desirable to can touch
Component voltage should drop to below 80V in 10 seconds.This just needs us to provide a component level Quick shut-off device,
To cut off the connection of each inter-module, any two points voltage in system is set to drop within that safe range.
To meet requirements above, industry, which has, releases intelligent photovoltaic terminal box scheme.Increase semiconductor in photovoltaic junction box
Switch, when critical situation occurs, by giving semiconductor switch one signal, to turn off component output.
However, practical application and theory analysis find that above-mentioned semiconductor switch scheme still has the problem of serious.Due to
The characteristic of semiconductor switch, when running into the high temperature conditions such as fire, semiconductor switch can be in conducting state so that above-mentioned " shut-off "
Failure, can not provide safety guarantee for system.
State Intellectual Property Office 2016-8-10 discloses the application for a patent for invention of a TaiWan, China（CN 105846758
A, photovoltaic generating system and cutoff device）, it is disclosed that when photovoltaic DC-to-AC converter closing described in a kind of cutoff device or failure, institute
State photovoltaic DC-to-AC converter and produce the first control signal；The cutoff device receives first control signal to disconnect the photovoltaic battle array
Row and the photovoltaic DC-to-AC converter.The photovoltaic generating system of the present invention has higher safety and reliability.And actually disclose
The structure of cutoff device, cutoff device are connected with photovoltaic DC-to-AC converter signal, such as can be connected with photovoltaic DC-to-AC converter circuit or nothing
Line connects, so as to receive the first control signal of photovoltaic DC-to-AC converter and/or the second control signal.Cutoff device can be according to first
Control signal disconnects the electrical connection of photovoltaic DC-to-AC converter and photovoltaic array.Cutoff device can also recover photovoltaic according to the second control signal
The electrical connection of inverter and photovoltaic array, so that photovoltaic DC-to-AC converter normal work, output electric energy to power network or is directly fed
Client uses.（The 39th section and the 40th section of specification）.And the structure for actually disclosing cutoff device includes control circuit switch dress
Put and power supply circuit.Control circuit receives first control signal and second control signal, is filled with corresponding controlling switch
Put disconnection and closure.Switching device 42 include it is at least one set of switch, wherein every group of switch be electrically connected it is corresponding in one group
Photovoltaic array unit.And actually define that cutoff device is relay or semiconductor switch（Specification 47-49 sections）.No matter
When cutoff device is relay or semiconductor switch, its relay is provided only between photovoltaic DC-to-AC converter and photovoltaic array, when after
When electrical equipment turns off, the electrification component in photovoltaic array still has a very high residual voltage, specified in significantly larger than 2017NEC690.12
Below 80V.Still there is the danger of electric shock as human contact and maintenance, security performance is low.It is assumed that cutoff device is opened for semiconductor
Close, then when running into high temperature, semiconductor switch easily fails, and can not provide safety guarantee for system.
The content of the invention
The present invention be directed to problem above, there is provided it is a kind of with high security and reliability applied to the fast of photovoltaic generation
Fast turning off system.
The technical scheme is that：It is a kind of to rapidly switch off system applied to photovoltaic generation, it is serially connected with photovoltaic module battle array
In row, including photovoltaic junction box is rapidly switched off, the photovoltaic module array includes some photovoltaic modulies, some photovoltaic modulies
Passed through after being connected in series by conflux/inversion box is delivered to AC network, AC network and conflux/inversion box between be provided with AC distribution
System, concatenation rapidly switches off photovoltaic junction box between the adjacent photovoltaic module, for turning off photovoltaic module；
The alternating-current system includes main switch and secondary lock, the main switch located at AC network and conflux/inversion box between, it is described
Secondary lock includes supply convertor, hand switch and automatic switch, and the automatic switch and hand switch connect power conversion respectively
Device, the supply convertor connection rapidly switch off photovoltaic junction box.
The photovoltaic junction box that rapidly switches off includes normally opened contact one and electromagnetic wire bag one, and the electromagnetic wire bag one connects electricity
Source converter, the moving contact of the normally opened contact one and the static contact of normally opened contact one connect adjacent photovoltaic module respectively.
The photovoltaic junction box that rapidly switches off is integrally manufactured with photovoltaic module, and the photovoltaic module is including electrification component and simultaneously
The bypass diode module being coupled on the electrification component；
The photovoltaic junction box that rapidly switches off includes normally opened contact two and electromagnetic wire bag two, and the normally opened contact two is connected to
On adjacent bypass diode module, the electromagnetic wire bag two connects supply convertor.
The photovoltaic junction box that rapidly switches off includes normally opened contact three, electromagnetic wire bag three and normally-closed contact, described normally opened tactile
Point three and normally-closed contact link with electromagnetic wire bag three；
The electromagnetic wire bag three connects supply convertor, the moving contact of the normally opened contact three and the static contact of normally opened contact three point
Adjacent photovoltaic module is not connected, and described photovoltaic module one end connects earth terminal, is provided between the photovoltaic module and earth terminal
Normally-closed contact.
Component can also be based between photovoltaic junction box is rapidly switched off in the present invention being serially connected in adjacent photovoltaic module
Voltage class concatenated between each two photovoltaic module and rapidly switch off photovoltaic junction box.This component level rapidly switches off photovoltaic and connect
Line box belongs to outer and is connected on original photovoltaic module, will not change the structure of original photovoltaic module, be easy to existing to having installed
Photovoltaic module transformed, on the one hand improve security, on the other hand, it is not necessary to photovoltaic module is integrally replaced, save
Cost.
Photovoltaic module array break down needs overhaul or occur major natural disasters cause photovoltaic module array
During damage, rapidly switch off photovoltaic junction box and can realize and rapidly switch off so that adjacent photovoltaic module mutually separates, it is ensured that photovoltaic
The residual voltage of component can drop in safe range within the most short time, ensure the personal safety of maintainer.At main switch
When off-state, supply convertor must not be electric, causes to rapidly switch off the disconnection of terminal box dead electricity.As long as that is whole system
Break down and power off, each photovoltaic module will disconnect, and realize on to greatest extent and linked with power network, when power network because failure is lost
It can also be disconnected rapidly between photovoltaic module after electricity, the residual voltage allowed in very short time in photovoltaic module drops to safety
Scope（Provide that personnel enter in safety margin in 2017NEC690.12 photovoltaic system safety standards, it is desirable to the component electricity that can be touched
Pressure should drop to below 80V in 10 seconds）So personnel enter it is fashionable can just guarantee personal safety, reduce accident.
The situation for using semiconductor switch high temperature failure in the prior art is compared to, electromagnetic switch is used in this case, as long as photovoltaic
Component powers off（Either high temperature power-off or because other reasonses power-off）, electromagnetic switch can quickly make instead in time
Should, it is ensured that personal safety.It is compared to and electromagnetic switch is set between inverter and photovoltaic electrification component in the prior art, this
There is electromagnetic switch in case on the photovoltaic module of each series connection, enable to photovoltaic module separate when power is off, it is ensured that
Residual voltage can reduce rapidly in photovoltaic module, ensure personal safety, and safety and stability is higher.The present invention has on the whole
Safe, the advantages of stability is good.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one,
Fig. 2 is that the embodiment of the present invention one rapidly switches off junction box structure schematic diagram,
Fig. 3 is the structural representation of embodiment two in the present invention,
Fig. 4 is that the embodiment of the present invention two rapidly switches off junction box structure schematic diagram,
Fig. 5 is the structural representation of embodiment three in the present invention,
Fig. 6 is quick light end photovoltaic junction box structural representation in embodiment three in the present invention,
Fig. 7 is prior art construction schematic diagram；
1 is photovoltaic module in figure, and 11 be electrification component, and 12 be bypass diode module, and 2 be inversion box of confluxing, and 3 be alternating current
Net, 4 be alternating-current system, and 41 be main switch, and 42 be secondary lock, and 421 be supply convertor, and 422 be hand switch, and 423 be automatic
Switch, 5 be to rapidly switch off photovoltaic junction box, and 51 be normally opened contact one, and 52 be electromagnetic wire bag one, and 53 be normally opened contact two, and 54 are
Electromagnetic wire bag two, 55 be normally opened contact three.56 be electromagnetic wire bag three.57 be normally-closed contact.
Embodiment
The present invention is as shown in figures 1 to 6, a kind of to rapidly switch off system applied to photovoltaic generation, is serially connected with photovoltaic module array
In, including photovoltaic junction box is rapidly switched off, the photovoltaic module array includes some photovoltaic modulies 1, some photovoltaic modulies 1
Passed through after being connected in series by conflux/inversion box 2 is delivered to AC network 3, AC network 3 and conflux/inversion box between be provided with exchange
Distribution system 4, concatenation rapidly switches off photovoltaic junction box 5 between the adjacent photovoltaic module, for turning off photovoltaic module.Exchange
Power network can be electric main net or regional power grid（One transformer platform area or large enterprise's internal electric network）.
Rapidly switching off that photovoltaic junction box can be serially connected between adjacent photovoltaic module can also the voltage based on component etc.
Level concatenation between each two photovoltaic module rapidly switches off photovoltaic junction box.This component level rapidly switches off photovoltaic junction box and belonged to
It is connected on outside on original photovoltaic module, the structure of original photovoltaic module will not be changed, is easy to having installed existing photovoltaic group
Part is transformed, and on the one hand improves security, on the other hand, it is not necessary to integrally replace photovoltaic module, saved cost.
Photovoltaic module array break down needs overhaul or occur major natural disasters cause photovoltaic module array
During damage, rapidly switch off photovoltaic junction box and can realize and rapidly switch off so that adjacent photovoltaic module mutually separates, it is ensured that photovoltaic
The residual voltage of component can drop in safe range within the most short time, ensure the personal safety of maintainer, each or
The setting of each two photovoltaic module part rapidly switches off photovoltaic junction box and enables to residual voltage in adjacent photovoltaic module to reduce rapidly, with
Prior art is compared shown in Fig. 7, and prior art is only provided with main switch confluxing between inversion box and AC network, is damaged in photovoltaic module
Component itself still has higher residual voltage when bad, and security is poor, and this case sets between photovoltaic module and rapidly switches off photovoltaic wiring
Box so that adjacent photovoltaic module mutually separates, it is ensured that the residual voltage of photovoltaic module can drop to safety within the most short time
In the range of, security performance is higher.
The alternating-current system 4 includes main switch 41 and secondary lock 42, and the main switch 41 is located at AC network and/inversion of confluxing
Between case 2, the secondary lock 42 includes supply convertor 421, hand switch 422 and automatic switch 423, the automatic switch 423
Supply convertor 421 is connected respectively with hand switch 422, and the supply convertor connection rapidly switches off photovoltaic junction box.
When main switch is off, supply convertor must not be electric, causes to rapidly switch off the disconnection of terminal box dead electricity.Also
As long as being to say that whole system breaks down to power off, each photovoltaic module will disconnect, and realize on to greatest extent and linked with power network,
It also can rapidly disconnect between photovoltaic module after power network is due to failure dead electricity, allowed in very short time in photovoltaic module
Residual voltage drop to safe range（2017NEC690.12 provide that personnel enter in safety margin in photovoltaic system safety standard,
The component voltage that can be touched is asked to drop to below 80V in 10 seconds）So entering in personnel fashionable can just ensure personal peace
Entirely, accident is reduced.Rapidly switch off photovoltaic junction box and use electromagnetic switch, at high operating temperatures than semiconductor switch more
It is stable, the drawbacks of semiconductor switch fails at high operating temperatures is avoided, stability is more preferable.
Embodiment one
As shown in Figure 1-2, the photovoltaic junction box 5 that rapidly switches off includes normally opened contact 1 and electromagnetic wire bag 1, the electricity
Magnet-wire bag 1 connects supply convertor 421, the moving contact of the normally opened contact 1 and the static contact difference of normally opened contact one
Connect adjacent photovoltaic module.
During photovoltaic module array normal power generation, supply convertor and electromagnetic wire Bao Yijun obtain electric, are associated with electromagnetic wire bag one
Normally opened contact one act, normally opened contact one closes so that each photovoltaic module is connected into photovoltaic module array, realizes generating work(
Can, when the needs that break down overhaul or run into force majeure, and breaking accident occurs, main switch disconnects, supply convertor and electromagnetic wire
A dead electricity is wrapped, normally opened contact one returns to normally open, now the relatively independent disconnection of each photovoltaic module so that photovoltaic module
Residual voltage quickly falls to safe range, and safety guarantee is provided to enter the workmen, fire-fighting first-aid personnel etc. in place.It is this
The system of rapidly switching off belongs to outer and is connected on original photovoltaic module, will not change the structure of original photovoltaic module, be easy to
Existing photovoltaic module is installed to be transformed, on the one hand improves security, on the other hand, it is not necessary to integrally replace photovoltaic module
Change, saved cost.Secondary lock is also provided with main switch, supply convertor is controlled respectively using hand switch and automatic switch,
So photovoltaic module can be just controlled manually when maintainer needs and actively disconnects and being safeguarded.It is so that residual in photovoltaic module
Pressure is rapid to be declined, and is accelerated O＆M maintenance process, is improved operating efficiency.
Embodiment two
As shown in Figure 3-4, described to rapidly switch off photovoltaic junction box 5 and photovoltaic module 1 is integrally manufactured, the photovoltaic module 1 includes
Electrification component 11 and the bypass diode module 12 being parallel on the electrification component；
The photovoltaic junction box 5 that rapidly switches off includes normally opened contact 2 53 and electromagnetic wire bag 2 54, and the normally opened contact two is distinguished
It is connected on adjacent bypass diode module, the electromagnetic wire bag two connects supply convertor.Wiring can further be simplified,
Reduce the volume of whole device, be easily installed and use.
Embodiment three
As seen in figs. 5-6, it is described rapidly switch off photovoltaic junction box 5 include normally opened contact 3 55, electromagnetic wire bag 3 56 and it is normally closed touch
Point 57, the normally opened contact 3 55 and normally-closed contact 57 link with electromagnetic wire bag 3 56；
The electromagnetic wire bag three connects supply convertor, the moving contact of the normally opened contact three and the static contact of normally opened contact three point
Adjacent photovoltaic module is not connected, and described photovoltaic module one end connects earth terminal, is provided between the photovoltaic module and earth terminal
Normally-closed contact.When photovoltaic module normal power generation, supply convertor obtain it is electric, electromagnetic wire bag three also it is electric, normally opened contact three and often
Closed contact acts, and normally opened contact three closes so that some photovoltaic modulies are connected, while normally-closed contact disconnects so that photovoltaic module
Disconnected with earth terminal, it is ensured that photovoltaic module forms path with AC network, is powered to AC network.Need to overhaul when breaking down
Or when running into force majeure breaking accident occurs, main switch disconnects, or can be operated with manual switches manual disconnection, or can be with
Disconnected automatically by automatic switch so that supply convertor dead electricity, such electromagnetic wire bag three is also with regard to dead electricity, normally opened contact three and often
Closed contact restPoses, i.e., normally opened contact three recovers off-state, and some photovoltaic modulies return to relatively independent state, often
Closed contact returns to closure state so that photovoltaic module under separate state and earth terminal form loop, residual in photovoltaic module
Pressure energy enough runs through earth terminal export so that and the residual voltage of photovoltaic module declines rapidly, compared with embodiment one and embodiment two,
Residual voltage is exported and consumed by earth terminal so that pressure decay rate is faster.Improve security and operating efficiency.
Claims (5)
1. a kind of rapidly switch off system applied to photovoltaic generation, it is serially connected with photovoltaic module array, it is characterised in that including fast
Speed shut-off photovoltaic junction box, the photovoltaic module array includes some photovoltaic modulies, after some photovoltaic modulies are connected in series
Via conflux/inversion box is delivered to AC network, AC network and conflux/inversion box between be provided with alternating-current system, it is adjacent
The photovoltaic module between concatenation rapidly switch off photovoltaic junction box, for turning off photovoltaic module.
2. a kind of system is rapidly switched off according to claim 1 applied to photovoltaic generation, it is characterised in that the exchange
Distribution system includes main switch and secondary lock, the main switch located at AC network and conflux/inversion box between, the secondary lock includes power supply
Converter, hand switch and automatic switch, the automatic switch and hand switch connect supply convertor respectively, and the power supply becomes
Parallel operation connection rapidly switches off photovoltaic junction box.
3. a kind of system is rapidly switched off according to claim 2 applied to photovoltaic generation, it is characterised in that described quick
Shut-off photovoltaic junction box includes normally opened contact one and electromagnetic wire bag one, and the electromagnetic wire bag one connects supply convertor, described normal
The static contact of the moving contact and normally opened contact one of opening contact one connects adjacent photovoltaic module respectively.
4. a kind of system is rapidly switched off according to claim 2 applied to photovoltaic generation, it is characterised in that described quick
Turn off photovoltaic junction box and photovoltaic module is integrally manufactured, the photovoltaic module includes electrification component and is parallel to the electrification component
On bypass diode module；
The photovoltaic junction box that rapidly switches off includes normally opened contact two and electromagnetic wire bag two, and the normally opened contact two is connected to
On adjacent bypass diode module, the electromagnetic wire bag two connects supply convertor.
5. a kind of system is rapidly switched off according to claim 2 applied to photovoltaic generation, it is characterised in that described quick
Shut-off photovoltaic junction box includes normally opened contact three, electromagnetic wire bag three and normally-closed contact, the normally opened contact three and normally-closed contact and
Electromagnetic wire bag three links；
The electromagnetic wire bag three connects supply convertor, the moving contact of the normally opened contact three and the static contact of normally opened contact three point
Adjacent photovoltaic module is not connected, and described photovoltaic module one end connects earth terminal, is provided between the photovoltaic module and earth terminal
Normally-closed contact.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422842.XA CN107425808A (en) | 2017-06-07 | 2017-06-07 | It is a kind of to rapidly switch off system applied to photovoltaic generation |
| PCT/CN2017/114687 WO2018223631A1 (en) | 2017-06-07 | 2017-12-06 | Rapid shutdown system applied to photovoltaic power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422842.XA CN107425808A (en) | 2017-06-07 | 2017-06-07 | It is a kind of to rapidly switch off system applied to photovoltaic generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107425808A true CN107425808A (en) | 2017-12-01 |
Family
ID=60429675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710422842.XA Pending CN107425808A (en) | 2017-06-07 | 2017-06-07 | It is a kind of to rapidly switch off system applied to photovoltaic generation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107425808A (en) |
| WO (1) | WO2018223631A1 (en) |
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| CN108565891A (en) * | 2018-04-26 | 2018-09-21 | 厦门科华恒盛电力能源有限公司 | A kind of photovoltaic string formation cutoff device, method and photovoltaic system |
| CN108886339A (en) * | 2018-04-13 | 2018-11-23 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array cutoff device |
| WO2018223631A1 (en) * | 2017-06-07 | 2018-12-13 | 江苏通灵电器股份有限公司 | Rapid shutdown system applied to photovoltaic power generation |
| CN109075738A (en) * | 2018-02-05 | 2018-12-21 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array turning off system |
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| CN109075738A (en) * | 2018-02-05 | 2018-12-21 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array turning off system |
| WO2019148483A1 (en) * | 2018-02-05 | 2019-08-08 | 苏州谐通光伏科技股份有限公司 | Shutdown system for photovoltaic assembly array |
| CN108886339A (en) * | 2018-04-13 | 2018-11-23 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array cutoff device |
| CN108565891A (en) * | 2018-04-26 | 2018-09-21 | 厦门科华恒盛电力能源有限公司 | A kind of photovoltaic string formation cutoff device, method and photovoltaic system |
| WO2019227568A1 (en) * | 2018-05-31 | 2019-12-05 | 苏州同泰新能源科技有限公司 | Multi-channel power supply management module |
| CN110797907A (en) * | 2018-08-03 | 2020-02-14 | 浙江昱能科技有限公司 | Photovoltaic system with safety protection function |
| CN111835279A (en) * | 2019-04-16 | 2020-10-27 | 博发电子股份有限公司 | Solar cell system, and quick-shutdown control circuit and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018223631A1 (en) | 2018-12-13 |
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Application publication date: 20171201 |