CN104319810A - Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function - Google Patents
Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function Download PDFInfo
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- CN104319810A CN104319810A CN201410609982.4A CN201410609982A CN104319810A CN 104319810 A CN104319810 A CN 104319810A CN 201410609982 A CN201410609982 A CN 201410609982A CN 104319810 A CN104319810 A CN 104319810A
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- triode
- photovoltaic
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- optocoupler
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- 239000000758 substrate Substances 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims description 28
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the input circuit, e.g. transients in the DC input
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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
Abstract
The invention relates to an input safety protection circuit of a photovoltaic inverter and a photovoltaic inverter having the safety protection function. The safety protection circuit comprises a controllable switch K1, a triode Q1, a switch S1 and/or a wireless receiving module, a first resistor R1 and a second resistor R2. The collector electrode of the Q1 is connected with one end of a coil of the K1. The other end of the coil of the K1 is connected with a Vcc. One end of a switch contact of the K1 is connected with the output end of a photovoltaic substrate set string through a direct current cable. The other end of the switch contact of the K1 is connected with the input end of the inverter through a direct current cable. The base electrode of the Q1 is connected with the input end of the S1. The output end of the S1 is connected with a pin 3 of the triode end of a U1, and a pin 4 is connected with the R1 and then is connected to the Vcc end. The R2 is connected between the base electrode and the emitting electrode of the Q1 in parallel. A pin 1 of the diode end of the U1 is connected with the wireless receiving module, and the wireless receiving module is connected to the Vcc end. According to the input safety protection circuit of the photovoltaic inverter and the photovoltaic inverter having the safety protection function, the photovoltaic substrate set string can be connected to or disconnected from the direct current cables, operation is facilitated, and personnel security is guaranteed.
Description
Technical field
The present invention relates to photovoltaic DC-to-AC converter technical field, particularly relate to the photovoltaic DC-to-AC converter of a kind of photovoltaic DC-to-AC converter input safety protective circuit and tool safeguard protection.
Background technology
Photovoltaic combining inverter obtains to be applied more and more widely, and middle low power photovoltaic DC-to-AC converter is applied to family expenses and commercial electricity generation system usually.In such systems, on the roof that photovoltaic substrate is arranged on building usually or metope, and photovoltaic combining inverter is arranged on metope usually, and for easy to operate, the position of installation usually can not be too high.The voltage produced due to photovoltaic substrate group string is dangerous voltage, during the installation, maintenance of inverter and photovoltaic substrate direct current cables, usually requires to be covered by photovoltaic substrate with light tight, avoids photovoltaic substrate to produce the safety of dangerous voltage crisis staff.And do normally pretty troublesome like this, particularly when photovoltaic substrate is more, the time and efforts of at substantial to go to install.On the other hand, when building breaking out of fire, alternating current is cut off, and inverter quits work, and because photovoltaic substrate group string is arranged on roof, coupled direct current cables, still with dangerous voltage, when fire fighter puts out a fire, probably produces potential hazard.
Summary of the invention
The present invention, for solving the problem, provides a kind of photovoltaic DC-to-AC converter to input safety protective circuit, and it according to the signal received, can connect or disconnect the connection of photovoltaic substrate group string and direct current cables, is convenient to installation, maintenance operation, ensures the safety of operating personnel.
The present invention also provides a kind of photovoltaic DC-to-AC converter of tool safeguard protection, and its use safety, without potential hazard.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of photovoltaic DC-to-AC converter input safety protective circuit, it comprises gate-controlled switch K1, triode Q1, switch S 1 and the first resistance R1 and the second resistance R2, the collector electrode of described triode Q1 is connected with coil one end of described gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, switch contact one end of gate-controlled switch K1 connects the output of photovoltaic substrate group string by direct current cables, the other end connects the input of inverter by direct current cables, the base stage of described triode Q1 is connected with the input of described switch S 1, the grounded emitter of described triode Q1, between the base stage that second resistance R2 is connected in parallel on triode Q1 and emitter, power Vcc end is connected to after the output of described switch S 1 is connected with the first resistance R1.
Being improved to further technique scheme; described photovoltaic DC-to-AC converter input safety protective circuit also comprises wireless receiving module and optocoupler U1; the output of described switch S 1 is connected to 3 pin of the triode end of optocoupler U1; power Vcc end is connected to after 4 pin of the triode end of optocoupler U1 are connected with the first resistance R1; described wireless receiving module is connected to 1 pin of the diode end of described optocoupler U1; 2 pin ground connection of the diode end of optocoupler U1, described wireless receiving module is connected to power Vcc end.
For achieving the above object, the present invention also can by the following technical solutions:
A kind of photovoltaic DC-to-AC converter input safety protective circuit, it comprises gate-controlled switch K1, triode Q1, wireless receiving module, optocoupler U1 and the first resistance R1 and the second resistance R2, the collector electrode of described triode Q1 is connected with coil one end of described gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, switch contact one end of gate-controlled switch K1 connects the output of photovoltaic substrate group string by direct current cables, the other end connects the input of inverter by direct current cables, the base stage of described triode Q1 is connected with 3 pin of the triode end of described optocoupler U1, power Vcc end is connected to after triode end 4 pin of optocoupler U1 is connected with the first resistance R1, the grounded emitter of described triode Q1, between the base stage that the second resistance R2 is connected in parallel on triode Q1 and emitter, 1 pin of the diode end of optocoupler U1 connects described wireless receiving module, and 2 pin ground connection of the diode end of optocoupler U1, described wireless receiving module is connected to power Vcc end.
Being improved to further technique scheme, described photovoltaic DC-to-AC converter input safety protective circuit also comprises switch S 1, and the input of described switch S 1 is connected with the base stage of triode Q1, and output is connected with triode end 3 pin of optocoupler U1.
Preferably, described gate-controlled switch K1 is relay.
Preferably, described gate-controlled switch K1 is contactor.
Preferably, described gate-controlled switch K1 has two switch contacts, is connected on the direct current cables between photovoltaic substrate group string and inverter.
Being improved to further technique scheme, described photovoltaic DC-to-AC converter input safety protective circuit also comprises a diode D1, and it is connected in parallel on the coil two ends of gate-controlled switch K1.
The present invention also provides a kind of photovoltaic DC-to-AC converter, and it has described input safety protective circuit.
Photovoltaic DC-to-AC converter input safety protective circuit of the present invention, its beneficial effect is:
It can receive the wireless signal that inverter sends, and can control accordingly according to the signal received; Or according to artificial judgment, be switched on or switched off circuit.When safety guard disconnects the connection of photovoltaic substrate group string and direct current cables; the direct current cables being connected to photovoltaic DC-to-AC converter is not with voltage, and carrying out that can be safe operates, when inverter is in normal condition; safety device is in normally closed state, and inverter normally works.When needs to be installed photovoltaic combining inverter or keeped in repair, can connect by open circuit, ensure the safety of operating personnel.
Accompanying drawing explanation
Fig. 1 is the elementary diagram of the arbitrary photovoltaic DC-to-AC converter input safety protective circuit of the embodiment of the present invention 1 ~ 3 and photovoltaic DC-to-AC converter;
Fig. 2 is the principle schematic of the embodiment of the present invention 1 photovoltaic DC-to-AC converter input safety protective circuit;
Fig. 3 is the principle schematic of the embodiment of the present invention 2 photovoltaic DC-to-AC converter input safety protective circuit;
Fig. 4 is the principle schematic of the embodiment of the present invention 3 photovoltaic DC-to-AC converter input safety protective circuit.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1:
With reference to Fig. 1; photovoltaic DC-to-AC converter input safety protective circuit of the present invention; be mounted between photovoltaic substrate group string and combining inverter, be connected with photovoltaic substrate group string and combining inverter respectively by direct current cables, and be placed on the nearer position of distance photovoltaic substrate as far as possible.
With reference to Fig. 2, photovoltaic DC-to-AC converter input safety protective circuit of the present invention, comprise gate-controlled switch K1, triode Q1, switch S 1, diode D1 and the first resistance R1 and the second resistance R2, wherein gate-controlled switch K1 can be the gate-controlled switch such as relay, contactor, and it all has coil; Switch S 1 is push-button switch, can manual operation.The collector electrode of triode Q1 is connected with coil one end of gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, diode D1 is connected in parallel on the coil two ends of gate-controlled switch K1, two switch contact one end of gate-controlled switch K1 connect the J1 of photovoltaic substrate group string by direct current cables, J4 output, the other end connects the J2 of inverter by direct current cables, J3 input, the base stage of triode Q1 is connected with the input of switch S 1, the grounded emitter of triode Q1, between the base stage that second resistance R2 is connected in parallel on triode Q1 and emitter, power Vcc end is connected to after the output of switch S 1 is connected with the first resistance R1.
Under normal circumstances, switch S 1 closes, and Vcc is connected to the base stage of Q1 by R1, and Q1 closes, K1 coil electricity, and the switch contact of K1 closes, and photovoltaic substrate produce power is transported to photovoltaic DC-to-AC converter.When needing the circuit disconnecting photovoltaic DC-to-AC converter, switch S 1 flicks, Vcc can not be connected to the base stage of Q1, and Q1 disconnects, K1 coil blackout, the switch of K1 disconnects, direct current cables and photovoltaic substrate group string disconnect, and direct current cables and photovoltaic DC-to-AC converter input are all not charged, and carrying out that can be safe is installed and overhaul, when breaking out of fire, also can not meet accident electric shock accidents.
Embodiment 2:
With reference to Fig. 3, as different from Example 1, photovoltaic DC-to-AC converter input safety protective circuit of the present invention, comprise gate-controlled switch K1, triode Q1, optocoupler U1, wireless receiving module, diode D1 and the first resistance R1 and the second resistance R2, the collector electrode of triode Q1 is connected with coil one end of gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, diode D1 is connected in parallel on the coil two ends of gate-controlled switch K1, two switch contact one end of gate-controlled switch K1 connect the J1 of photovoltaic substrate group string by direct current cables, J4 output, the other end connects the J2 of inverter by direct current cables, J3 input, the base stage of triode Q1 is connected with 3 pin of the triode end of optocoupler U1, power Vcc end is connected to after triode end 4 pin of optocoupler U1 is connected with the first resistance R1, the grounded emitter of triode Q1, between the base stage that second resistance R2 is connected in parallel on triode Q1 and emitter, 1 pin of the diode end of optocoupler U1 connects wireless receiving module, 2 pin ground connection of the diode end of optocoupler U1, wireless receiving module is connected to power Vcc end, and ground connection.
Inverter is usually with wireless communication apparatus such as Wifi or Zigbee; the wireless receiving module of safety guard can receive the wireless signal that inverter sends; under normal operation, receive closed signal, wireless receiving module exports high level; the side conducting of optocoupler triode; Vcc is connected to the base stage of Q1 by R1, and Q1 closes, K1 coil electricity; the switch contact of K1 closes, and photovoltaic substrate produce power is transported to photovoltaic DC-to-AC converter.When needing the circuit disconnecting photovoltaic DC-to-AC converter, inverter sends cut-off signal, and wireless receiving module receives cut-off signal, wireless receiving module output low level, the side not conducting of optocoupler triode, Vcc can not be connected to the base stage of Q1, Q1 disconnects, K1 coil blackout, the switch of K1 disconnects, and direct current cables and photovoltaic substrate group string disconnect, direct current cables and photovoltaic DC-to-AC converter input are all not charged, carrying out that can be safe is installed and overhauls, and when breaking out of fire, also can not meet accident electric shock accidents.
Embodiment 3:
With reference to Fig. 4, as different from Example 1, photovoltaic DC-to-AC converter input safety protective circuit of the present invention, comprise gate-controlled switch K1, switch S 1, triode Q1, optocoupler U1, wireless receiving module, diode D1 and the first resistance R1 and the second resistance R2, the collector electrode of triode Q1 is connected with coil one end of gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, diode D1 is connected in parallel on the coil two ends of gate-controlled switch K1, two switch contact one end of gate-controlled switch K1 connect the J1 of photovoltaic substrate group string by direct current cables, J4 output, the other end connects the J2 of inverter by direct current cables, J3 input, the base stage of triode Q1 is connected with the input of switch S 1, the output of switch S 1 is connected with 3 pin of the triode end of optocoupler U1, power Vcc is connect after 4 pin of the triode end of optocoupler U1 are connected with the first resistance R1, the grounded emitter of triode Q1, between the base stage that the second resistance R2 is connected in parallel on triode Q1 and emitter, 1 pin of the diode end of optocoupler U1 connects wireless receiving module, 2 pin ground connection, and wireless receiving module is connected to power Vcc end, and ground connection.
Inverter is usually with wireless communication apparatus such as Wifi or Zigbee, and the wireless receiving module of safety guard can receive the wireless signal that inverter sends.
The control logic of wireless receiving module can be set as required, can be set to receive signal for closed logic, not receive signal and be off logic, or on the contrary.Control method can be that wireless receiving module controls the closed of safety guard switch or disconnects (the closed or disconnection of Q1) together with S1, also can be receive an arbitrary signal be closed or disconnect, i.e. the relation of logical AND or logic OR.For guaranteeing safety, the logic of cut-off switch be or, that is S1 and the arbitrary open command that receives of wireless receiving module all can make the switch of safety guard disconnect; And the closed logic of safety guard switch be with, only have S1 and wireless receiving module all to receive close command switch just closed.
Under normal operation, wireless receiving module and switch S 1 all receive close command number, wireless receiving module exports high level, the side conducting of optocoupler triode, S1 closes, and Vcc is connected to the base stage of Q1 by R1, Q1 closes, K1 coil electricity, the switch contact of K1 closes, and photovoltaic substrate produce power is transported to photovoltaic DC-to-AC converter; When wireless receiving module or switch S 1 is arbitrary receive cut-off signal time, if wireless receiving module receives cut-off signal, then wireless receiving module output low level, the side not conducting of optocoupler triode, Vcc can not be connected to the base stage of Q1, and Q1 disconnects, K1 coil blackout, the switch of K1 disconnects, and direct current cables and photovoltaic substrate group string disconnect.If switch S 1 receives cut-off signal, S1 flicks, and Q1 disconnects, K1 coil blackout, and the switch of K1 disconnects, and direct current cables and photovoltaic substrate group string disconnect.When S1 closes, during the triode side conducting of optocoupler U1, Vcc is connected to the base stage of Q1 by R1, and Q1 closes, relay closes; When the triode side not conducting of S1 or optocoupler U1, Vcc can not be connected to the base stage of Q1, and the base stage of Q1 is moved to ground level by R2, and Q1 is in off-state, and relay switch disconnects.
Embodiment 4:
There is provided a kind of photovoltaic DC-to-AC converter, it has embodiment 1 ~ 3 arbitrary described photovoltaic DC-to-AC converter input safety protective circuit, guarantees safety.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a photovoltaic DC-to-AC converter input safety protective circuit, it is characterized in that: comprise gate-controlled switch K1, triode Q1, switch S 1 and the first resistance R1 and the second resistance R2, the collector electrode of described triode Q1 is connected with coil one end of described gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, switch contact one end of gate-controlled switch K1 connects the output of photovoltaic substrate group string by direct current cables, the other end connects the input of inverter by direct current cables, the base stage of described triode Q1 is connected with the input of described switch S 1, the grounded emitter of described triode Q1, between the base stage that second resistance R2 is connected in parallel on triode Q1 and emitter, power Vcc end is connected to after the output of described switch S 1 is connected with the first resistance R1.
2. photovoltaic DC-to-AC converter inputs safety protective circuit according to claim 1; it is characterized in that: also comprise wireless receiving module and optocoupler U1; the output of described switch S 1 is connected to 3 pin of the triode end of optocoupler U1; power Vcc end is connected to after 4 pin of the triode end of optocoupler U1 are connected with the first resistance R1; described wireless receiving module is connected to 1 pin of the diode end of described optocoupler U1; 2 pin ground connection of the diode end of optocoupler U1, described wireless receiving module is connected to power Vcc end.
3. a photovoltaic DC-to-AC converter input safety protective circuit, it is characterized in that: comprise gate-controlled switch K1, triode Q1, wireless receiving module, optocoupler U1 and the first resistance R1 and the second resistance R2, the collector electrode of described triode Q1 is connected with coil one end of described gate-controlled switch K1, another termination power Vcc of the coil of gate-controlled switch K1, switch contact one end of gate-controlled switch K1 connects the output of photovoltaic substrate group string by direct current cables, the other end connects the input of inverter by direct current cables, the base stage of described triode Q1 is connected with 3 pin of the triode end of described optocoupler U1, power Vcc end is connected to after triode end 4 pin of optocoupler U1 is connected with the first resistance R1, the grounded emitter of described triode Q1, between the base stage that the second resistance R2 is connected in parallel on triode Q1 and emitter, 1 pin of the diode end of optocoupler U1 connects described wireless receiving module, and 2 pin ground connection of the diode end of optocoupler U1, described wireless receiving module is connected to power Vcc end.
4. photovoltaic DC-to-AC converter inputs safety protective circuit according to claim 3, and it is characterized in that: also comprise switch S 1, the input of described switch S 1 is connected with the base stage of triode Q1, and output is connected with triode end 3 pin of optocoupler U1.
5. photovoltaic DC-to-AC converter input safety protective circuit according to claim 1 or 3, is characterized in that: described gate-controlled switch K1 is relay.
6. photovoltaic DC-to-AC converter input safety protective circuit according to claim 1 or 3, is characterized in that: described gate-controlled switch K1 is contactor.
7. photovoltaic DC-to-AC converter input safety protective circuit according to claim 1 or 3, is characterized in that: described gate-controlled switch K1 has two switch contacts, is connected on the direct current cables between photovoltaic substrate group string and inverter.
8. photovoltaic DC-to-AC converter input safety protective circuit according to claim 1 or 3, it is characterized in that: also comprise a diode D1, it is connected in parallel on the coil two ends of gate-controlled switch K1.
9. a photovoltaic DC-to-AC converter, is characterized in that, has the input safety protective circuit described in any one of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609982.4A CN104319810A (en) | 2014-10-31 | 2014-10-31 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609982.4A CN104319810A (en) | 2014-10-31 | 2014-10-31 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
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| CN104319810A true CN104319810A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410609982.4A Pending CN104319810A (en) | 2014-10-31 | 2014-10-31 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
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| CN (1) | CN104319810A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896460A (en) * | 2016-04-12 | 2016-08-24 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligent isolation switch |
| CN107196330A (en) * | 2017-05-25 | 2017-09-22 | 河南迎基太阳能科技有限公司 | Can remote monitoring solar optimizing scheduling equipment |
| US10411459B2 (en) | 2016-08-23 | 2019-09-10 | Delta Electronics (Shanghai) Co., Ltd | Photovoltaic power generation system and method for shutting down the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958555A (en) * | 2010-08-31 | 2011-01-26 | 山东力诺太阳能电力工程有限公司 | Intelligent control system and method of photovoltaic grid-connected power station |
| CN102545257A (en) * | 2012-01-12 | 2012-07-04 | 广东中商国通电子有限公司 | Solar photovoltaic generating single-phase grid-connected inverter and control method thereof |
| CN102540070A (en) * | 2012-02-08 | 2012-07-04 | 广东易事特电源股份有限公司 | Control and detection circuit for four relays and detection method thereof |
| CN202424240U (en) * | 2012-01-04 | 2012-09-05 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
| CN202586369U (en) * | 2012-03-05 | 2012-12-05 | 无锡盛莱得新能源科技有限公司 | Photovoltaic grid-connected inverter |
-
2014
- 2014-10-31 CN CN201410609982.4A patent/CN104319810A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958555A (en) * | 2010-08-31 | 2011-01-26 | 山东力诺太阳能电力工程有限公司 | Intelligent control system and method of photovoltaic grid-connected power station |
| CN202424240U (en) * | 2012-01-04 | 2012-09-05 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
| CN102545257A (en) * | 2012-01-12 | 2012-07-04 | 广东中商国通电子有限公司 | Solar photovoltaic generating single-phase grid-connected inverter and control method thereof |
| CN102540070A (en) * | 2012-02-08 | 2012-07-04 | 广东易事特电源股份有限公司 | Control and detection circuit for four relays and detection method thereof |
| CN202586369U (en) * | 2012-03-05 | 2012-12-05 | 无锡盛莱得新能源科技有限公司 | Photovoltaic grid-connected inverter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896460A (en) * | 2016-04-12 | 2016-08-24 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module intelligent isolation switch |
| CN105896460B (en) * | 2016-04-12 | 2018-11-09 | 常熟市福莱德连接器科技有限公司 | Photovoltaic module Intelligent isolation switch |
| US10411459B2 (en) | 2016-08-23 | 2019-09-10 | Delta Electronics (Shanghai) Co., Ltd | Photovoltaic power generation system and method for shutting down the same |
| CN107196330A (en) * | 2017-05-25 | 2017-09-22 | 河南迎基太阳能科技有限公司 | Can remote monitoring solar optimizing scheduling equipment |
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Application publication date: 20150128 |
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| RJ01 | Rejection of invention patent application after publication |