CN204068851U - Inverter - Google Patents
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- CN204068851U CN204068851U CN201420539636.9U CN201420539636U CN204068851U CN 204068851 U CN204068851 U CN 204068851U CN 201420539636 U CN201420539636 U CN 201420539636U CN 204068851 U CN204068851 U CN 204068851U
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- 230000002441 reversible effect Effects 0.000 claims abstract description 24
- 230000001939 inductive effect Effects 0.000 abstract description 30
- 230000002265 prevention Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 description 11
- 150000001768 cations Chemical class 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
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- 239000000047 product Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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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 discloses a kind of inverter, this inverter comprises: minus earth module, and wherein, the first end of minus earth module is connected to photovoltaic module via power distribution cabinet, is in forward bias condition for making photovoltaic module; DC power supply charging module, wherein, this DC power supply charging module is connected to photovoltaic module via power distribution cabinet, for photovoltaic module reverse charging; And inversion module, wherein, the first end of this inversion module is connected to the second end of minus earth module, and the second end of inversion module is connected to electrical network.By the utility model, solve the problem that inverter of the prior art cannot be taken into account the decay of prevention potential inducing and recover potential inducing decay, and then reach the effect ensureing photovoltaic plant stable output power.
Description
Technical field
The utility model relates to power domain, in particular to a kind of inverter.
Background technology
Renewable, the advantage that can not be exhausted of solar energy resources, the application of photovoltaic module is constantly opened up forward, and wherein photovoltaic plant is because of its environmental protection, good characteristic easy to use, obtains and extensively promotes and use.Photovoltaic plant is system solar energy being converted to direct current energy, and needing in systems in which to be converted to by direct current by inverter can widely used alternating current.The installation environment of current solar power station is varied, for hot and humid and more complicated area, photovoltaic plant very easily produces potential inducing decay (PID) phenomenon, the harm that PID problem causes for solar power plant is very huge, but the PID phenomenon of the overwhelming majority is reversible.Existing minority inverter can only prevent PID phenomenon or only recover for the photovoltaic plant producing PID problem from system minus earth aspect.
The decay of prevention potential inducing cannot be taken into account for the inverter in correlation technique and recover the problem of potential inducing decay, not yet proposing effective solution at present.
Summary of the invention
Main purpose of the present utility model is to provide a kind of inverter, to solve the problem that inverter of the prior art cannot be taken into account the decay of prevention potential inducing and recover potential inducing decay.
The utility model provides a kind of inverter, and this inverter comprises: minus earth module, and wherein, the first end of this minus earth module is connected to photovoltaic module via power distribution cabinet, is in forward bias condition for making photovoltaic module; DC power supply charging module, wherein, this DC power supply charging module is connected to photovoltaic module via power distribution cabinet, for photovoltaic module reverse charging; And inversion module, wherein, the first end of this inversion module is connected to the second end of minus earth module, and the second end of inversion module is connected to electrical network.
Further, minus earth module comprises: current sensor; And first fuse, wherein, the first end of the first fuse is via current sensor ground connection, and the second end of the first fuse is connected to the negative pole of inversion module.
Further, minus earth module also comprises: resistance, wherein, resistance comprises the first resistance, the second resistance, the 3rd resistance and the 4th resistance, first resistance and fuse are connected in parallel, and the second resistance is serially connected between the negative pole of inversion module and ground, and the 3rd resistance is serially connected between the positive pole of inversion module and ground, 4th resistance is serially connected between the positive pole of inversion module and ground, is connected with the earth terminal of current sensor.
Further, DC power supply charging module comprises: ammeter, and the first end of ammeter is connected to the positive pole of power distribution cabinet; Second fuse; And charge power supply, wherein, the positive pole of charge power supply is connected to the second end of ammeter via the second fuse, the negative pole of charge power supply is connected to the positive pole of power distribution cabinet, and charge power supply is used for photovoltaic module reverse charging.
Further, charge power supply comprises: rectifier, and the input of rectifier is connected to electrical network; And DC boosting transformer, wherein, the input of DC boosting transformer is connected to the output of rectifier, and the positive pole of the output of DC boosting transformer is connected to the second end of ammeter via the second fuse, the negative pole of the output of DC boosting transformer is connected to the positive pole of power distribution cabinet.
Further, charge power supply comprises: DC power supply, and wherein, the positive pole of DC power supply is connected to the second end of ammeter via the second fuse, the negative pole of DC power supply is connected to the positive pole of power distribution cabinet.
Further, DC power supply charging module also comprises: combined-voltage table, and wherein, combined-voltage list catenation is between the negative pole and ground of power distribution cabinet.
Further, DC power supply charging module also comprises: delay switch, delay switch comprises the first delay switch and the second delay switch, first delay switch is serially connected between the negative pole of DC power supply and the positive pole of power distribution cabinet, and the second delay switch is serially connected between the negative pole of power distribution cabinet and the negative pole of inversion module.
Pass through the utility model, by adopting minus earth module and DC power supply charging module, solve the problem that inverter of the prior art cannot be taken into account the decay of prevention potential inducing and recover potential inducing decay, and then reach the effect ensureing photovoltaic plant stable output power.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the photovoltaic plant according to correlation technique;
Fig. 2 is the schematic diagram of the inverter according to the utility model first embodiment;
Fig. 3 is the schematic diagram of the inverter according to the utility model second embodiment;
Fig. 4 is the schematic diagram of the inverter according to the utility model the 3rd embodiment; And
Fig. 5 is the schematic diagram of the inverter according to the utility model the 4th embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Photovoltaic plant is system solar energy being converted to direct current energy, need converting direct-current power into alternating-current power by inverter in systems in which, wherein, as shown in Figure 1, photovoltaic plant comprises photovoltaic module matrix, header box, power distribution cabinet and inverter, and the direct current that photovoltaic plant exports inputs in electrical network via inverter.Photovoltaic module converts solar energy to direct current energy, header box is used for multi-channel DC electric energy to pool a road direct current energy, such as, 4 road power of 4 groups of photovoltaic module Output matrixes is 1000KW, after being superimposed as 1 road power via header box, performance number is 4000KW.Power distribution cabinet can stablize the electric energy that header box exports, and carries out distribution to power consumption equipment and provide power-off protection.
The utility model provides a kind of inverter, if Fig. 2 is the schematic diagram of the inverter according to the utility model first embodiment.
As shown in Figure 2, this inverter comprises: minus earth module 10, DC power supply charging module 20 and inversion module 30.
Minus earth module 10, wherein, the first end of minus earth module is connected to photovoltaic module via power distribution cabinet, is in forward bias condition for making photovoltaic module.
Potential inducing decay is because the photovoltaic module in photovoltaic plant occurs reverse biased in hot and humid environment, causes cation to flow into the earth in a large number and causes the impedance of photovoltaic module to increase, cause the phenomenon that output power of photovoltaic module reduces further.Can ensure that photovoltaic module is in forward bias condition by minus earth module 10, stop the cation transport in photovoltaic module, thus the generation of potential inducing relaxation phenomenon can be prevented.
DC power supply charging module 20, wherein, DC power supply charging module is connected to photovoltaic module via power distribution cabinet, for photovoltaic module reverse charging.
Potential inducing relaxation phenomenon is reversible, namely can compensate recovery to the photovoltaic module producing potential inducing decay.By carrying out reverse charging to photovoltaic module, the cation run off in photovoltaic module can be supplemented, thus the power output of compensating light photovoltaic assembly, reach the potential inducing relaxation phenomenon that elimination has produced.
Inversion module 30, wherein, the first end of inversion module is connected to the second end of minus earth module, and the second end of inversion module is connected to electrical network.
The electric current that photovoltaic plant exports be all direct current, and actual production live in what use is all alternating current, therefore, become alternating current to be input in electrical network the DC inverter that photovoltaic plant exports by inversion module 30.This inversion module 30 can be inverter general arbitrarily.
By minus earth module 10, the inverter that the utility model embodiment provides ensures that photovoltaic module is in forward bias condition, stop the cation transport in photovoltaic module, thus the generation of prevention potential inducing relaxation phenomenon, reverse charging is carried out by DC power supply charging module 20 pairs of photovoltaic modulies, supplement the cation run off in photovoltaic module, thus the potential inducing relaxation phenomenon that recovery has produced, solve the problem that inverter of the prior art cannot be taken into account the decay of prevention potential inducing and recover potential inducing decay.
Alternatively, minus earth module 10 comprises: current sensor and the first fuse F1.
First fuse F1, wherein, the first end of the first fuse F1 is via current sensor ground connection, and second end of the first fuse F1 is connected to the negative pole of inversion module 30.
As can be seen from Figure 3, inversion module 30 and power distribution cabinet negative pole altogether, the negative pole of inversion module 30, via the first fuse F1 and current sensor ground connection, is equivalent to the negative pole also ground connection of power distribution cabinet.Therefore, when photovoltaic plant operation on daytime generating, photovoltaic module forward bias can be ensured, thus the generation of prevention potential inducing relaxation phenomenon.The change of photovoltaic module leakage current over the ground can be detected by current sensor, thus the situation of change of photovoltaic module ground insulation resistance can be calculated, reach the object of Insulation monitoring.When leakage current is excessive, the first fuse F1 fuses, can proterctive equipment or the safety of guarantee operating personnel.
Preferably, minus earth module 10 also comprises: resistance, wherein, this resistance comprises the first resistance, the second resistance, the 3rd resistance and the 4th resistance, first resistance and fuse are connected in parallel, between the negative pole that the second resistance is serially connected in inversion module 30 and ground, between the positive pole that the 3rd resistance is serially connected in inversion module 30 and ground, between the positive pole that 4th resistance is serially connected in inversion module 30 and ground, be connected with the earth terminal of described current sensor.
As can be seen from Figure 3, the positive pole of inversion module 30 is connected with the positive pole of power distribution cabinet, the negative pole of inversion module 30 is connected with the negative pole of power distribution cabinet, therefore, the negative pole that second resistance is connected to inversion module 30 is equivalent to be connected to the negative pole of power distribution cabinet, the positive pole that 3rd resistance is connected to inversion module 30 is equivalent to be connected to the positive pole of power distribution cabinet, and the positive pole that the 4th resistance is connected to described inversion module 30 is equivalent to be connected to the positive pole of power distribution cabinet.First resistance R1 is for limiting the size of photovoltaic module leakage current over the ground, and when leakage current is excessive, the first fuse F1 fuses, and the negative pole of power distribution cabinet is via the first resistance R1 and current sensor ground connection, thus ground insulation resistance increases, the corresponding reduction of leakage current.Second resistance R3 and the 3rd resistance R4 is respectively used to the positive pole and the negative pole electric current over the ground that limit inversion module 30, plays protection inversion module 30 and acts on.4th resistance R0 is leakage currents resistance, can increase ground insulation resistance equally by R0, avoids producing excessive leakage current.
Alternatively, as shown in Figure 3, DC power supply charging module 20 comprises: ammeter, the second fuse F2 and charge power supply 201.
Ammeter, the first end of this ammeter is connected to the positive pole of described power distribution cabinet.
Charge power supply 201, wherein, the positive pole of this charge power supply 201 is connected to the second end of ammeter via the second fuse, the negative pole of this charge power supply 201 is connected to the positive pole of power distribution cabinet, and this charge power supply 201 is for photovoltaic module reverse charging.
By the both positive and negative polarity of charge power supply 201 and the both positive and negative polarity reversal connection of power distribution cabinet, realize to power distribution cabinet reverse charging, power distribution cabinet by delivery of electrical energy to photovoltaic module, realize the reverse charging of photovoltaic module.Above-mentioned ammeter is serially connected in the positive pole of charge power supply 201, and the electric current of the positive pole of charge power supply 201 flows through ammeter through the second fuse F2, then flows into the negative pole of power distribution cabinet.The effect of this ammeter is the size of current in order to the positive pole of real-time monitored charge power supply 201 exports; ensure that this output current is not more than the maximum current of charge power supply output current; therefore, the protection to equipment can be realized by above-mentioned ammeter and the second fuse F2.
Preferably, as shown in Figure 4, charge power supply 201 comprises: rectifier 2011 and DC boosting transformer 2012.
Rectifier 2011, the input of this rectifier 2011 is connected to electrical network.Rectifier 201 is for being transformed into direct current by the alternating voltage introduced from electrical network.Alternating current from the input input electrical network of rectifier 2011, from the direct current that the output output transform of rectifier 2011 obtains.
DC boosting transformer 2012, wherein, the input of DC boosting transformer 2012 is connected to the output of rectifier 2011, the positive pole of the output of DC boosting transformer 2012 is connected to the second end of ammeter via the second fuse F2, the negative pole of the output of DC boosting transformer 2012 is connected to the positive pole of power distribution cabinet.
The direct current exported from the output of rectifier 2011 is transformed into the stable high voltage being applicable to charge to photovoltaic module via DC boosting transformer 2012.Be conducive to improving the efficiency to photovoltaic module reverse charging by DC boosting transformer 2012 booster tension.
By introducing alternating current from electrical network, carry out rectification via rectifier 2011 pairs of alternating currents and obtain direct current, obtain high voltage carrying out boosting inverter via DC boosting transformer 2012 to the direct current obtained, this high voltage is utilized to carry out reverse charging via power distribution cabinet to photovoltaic module, thus can compensating light photovoltaic assembly run off cation, reach compensate potential inducing decay effect.Comparatively economical to photovoltaic module reverse charging from the alternating current of the introducing of electrical network by Direct Transform, cost saving.
Alternatively, as shown in Figure 5, charge power supply 201 comprises: DC power supply 2013, and wherein, the positive pole of DC power supply 2013 is connected to the second end of ammeter via the second fuse F2, the negative pole of DC power supply 2013 is connected to the positive pole of power distribution cabinet.
DC power supply 2013 can be stable output direct current.Be connected to the negative pole of power distribution cabinet via the second fuse F2 and ammeter by the positive pole of DC power supply 2013, the negative pole of DC power supply 2013 is connected to the positive pole of power distribution cabinet, realize carrying out reverse charging to power distribution cabinet, and power distribution cabinet is connected to photovoltaic module via header box, therefore realize further carrying out reverse charging to photovoltaic module, the cation that compensating light photovoltaic assembly runs off, reaches the effect compensating potential inducing decay.Carry out reverse charging by DC power supply 2013 pairs of photovoltaic modulies, realize comparatively simple and convenient.
Preferably, the high voltage exported in order to ensure DC power supply 203 is successfully added on the negative pole of DC power distribution cabinet, and DC power supply charging module 20 comprises: combined-voltage table, and combined-voltage list catenation is between the negative pole and ground of power distribution cabinet.
At the negative pole of power distribution cabinet, one piece of combined-voltage table is housed over the ground, whether it act as and measures power distribution cabinet negative pole voltage is over the ground the direct voltage that DC power supply applies, thus determines whether the high voltage that DC power supply 203 exports successfully has been added on the negative pole of DC power distribution cabinet.When the voltage of combined-voltage table display is direct voltage, then represent that the high voltage that DC power supply 203 exports successfully is added on the negative pole of DC power distribution cabinet.On the other hand, voltage characteristic can be checked, anti-backflow for operating personnel and patrol officer.
Alternatively, DC power supply charging module also comprises: delay switch, wherein, this delay switch comprises the first delay switch A and the second delay switch B, between the positive pole that first delay switch A is serially connected in DC power supply 203 and the negative pole of power distribution cabinet, the second delay switch B is serially connected between the negative pole of power distribution cabinet and the negative pole of inversion module.
Whether the first delay switch A carries out potential inducing attenuation compensation to photovoltaic module for controlling photovoltaic plant.When the first delay switch A closes, the positive pole of the output of charge power supply 201 and the negative pole conducting of power distribution cabinet, DC power supply charging module 20 carries out reverse charging via power distribution cabinet to photovoltaic module, carry out potential inducing attenuation compensation, when the first delay switch A disconnects, the positive pole of the output of DC power supply and the negative pole of power distribution cabinet are also in off-state, now do not carry out reverse charging to power distribution cabinet.Whether the second delay switch B generates electricity for controlling photovoltaic plant.When the second delay switch B closes, the negative pole of inversion module 30 and the negative pole conducting of power distribution cabinet, thus the direct current that power distribution cabinet can be exported converts alternating current input electrical network to via inversion module 30, when the second delay switch B disconnects, the negative pole of inversion module 30 and the negative pole of power distribution cabinet are in off-state, and photovoltaic plant stops generating.
In concrete application, inversion module negative pole is by the first fuse F1 ground connection, and daytime, photovoltaic plant was stable, can realize prevention potential inducing attenuation problem.Photovoltaic plant detects the change of leakage current over the ground by the current sensor be serially connected in insurance over the ground, thus calculates the situation of change of battery panel ground insulation impedance, reaches the object of Insulation monitoring.
Evening, photovoltaic module generating terminated, feedback element between insulation monitoring module and DC power supplier passes on the situation of insulation impedance, when insulation resistance is too small, when leakage current is excessive, as rainy weather, for avoiding the damage causing personnel and equipment, now not carrying out potential inducing decay at night and recovering.When insulation resistance is very large, when meeting system safety, control delay switch by feedback element timer thus carry out potential inducing decay at night to recover.When arriving evening, timer action, delay switch B disconnects after Preset Time, such as 10min, and delay switch A is closed after Preset Time again, such as 10min, is to allow remaining electricity in system have enough time to dissipate like this, guarantee safety.
Electrical network connects direct current charging module 20.During night, first the alternating current that electrical network exports becomes direct current by rectifier, again by becoming the voltage of stable used size after DC boosting transformer, because the positive pole of DC power supply is connected with the negative pole of power distribution cabinet, therefore just achieve DC power supply to photovoltaic module carry out reverse charging to, realize PID recover.If occur night, the factors such as Changes in weather cause insulation resistance to reduce, then feedback element conveys a message at any time to DC power supply charging module and cut-off switch A complete charge process.
At day, to photovoltaic plant charging complete, now delay switch A disconnects, and such as, through Preset Time time delay, 10min, delay switch B closes, thus photovoltaic plant proceeds the generating on daytime, carries out the power generation process of minus earth by day.The time delay of this kind of situation is the direct voltage in order to there be time dissipation power distribution cabinet side more than needed, the safety of protection personnel and equipment.
As can be seen from the above description, the utility model achieves following technique effect:
By minus earth module 10, the utility model ensures that photovoltaic module is in forward bias condition, stop the cation transport in photovoltaic module, thus the generation of prevention potential inducing relaxation phenomenon, reverse charging is carried out by DC power supply charging module 20 pairs of photovoltaic modulies, supplement the cation run off in photovoltaic module, thus the potential inducing relaxation phenomenon that recovery has produced, solve the problem that inverter of the prior art cannot be taken into account the decay of prevention potential inducing and recover potential inducing decay, reach the effect ensureing photovoltaic plant stable output power further.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1. an inverter, is characterized in that, comprising:
Minus earth module, wherein, the first end of described minus earth module is connected to photovoltaic module via power distribution cabinet, is in forward bias condition for making described photovoltaic module;
DC power supply charging module, wherein, described DC power supply charging module is connected to described photovoltaic module via described power distribution cabinet, for described photovoltaic module reverse charging; And
Inversion module, wherein, the first end of described inversion module is connected to the second end of described minus earth module, and the second end of described inversion module is connected to electrical network.
2. inverter according to claim 1, is characterized in that, described minus earth module comprises:
Current sensor; And
First fuse, wherein, the first end of described first fuse is via described current sensor ground connection, and the second end of described first fuse is connected to the negative pole of described inversion module.
3. inverter according to claim 2, is characterized in that, described minus earth module also comprises:
Resistance, wherein, described resistance comprises the first resistance, the second resistance, the 3rd resistance and the 4th resistance, described first resistance and described fuse are connected in parallel, between the negative pole that described second resistance is serially connected in described power distribution cabinet and ground, between the positive pole that described 3rd resistance is serially connected in described power distribution cabinet and ground, between the positive pole that described 4th resistance is serially connected in described power distribution cabinet and ground, be connected with the earth terminal of described current sensor.
4. inverter according to claim 1, is characterized in that, described DC power supply charging module comprises:
Ammeter, the first end of described ammeter is connected to the positive pole of described power distribution cabinet;
Second fuse; And
Charge power supply, wherein, the positive pole of described charge power supply is connected to the second end of described ammeter via described second fuse, the negative pole of described charge power supply is connected to the positive pole of described power distribution cabinet, and described charge power supply is used for described photovoltaic module reverse charging.
5. inverter according to claim 4, is characterized in that, described charge power supply comprises:
Rectifier, the input of described rectifier is connected to electrical network; And
DC boosting transformer, wherein, the input of described DC boosting transformer is connected to the output of described rectifier, the positive pole of the output of described DC boosting transformer is connected to the second end of described ammeter via described second fuse, the negative pole of the output of described DC boosting transformer is connected to the positive pole of described power distribution cabinet.
6. inverter according to claim 4, is characterized in that, described charge power supply comprises:
DC power supply, wherein, the positive pole of described DC power supply is connected to the second end of described ammeter via described second fuse, the negative pole of described DC power supply is connected to the positive pole of described power distribution cabinet.
7. inverter according to claim 4, is characterized in that, described DC power supply charging module also comprises:
Delay switch, described delay switch comprises the first delay switch and the second delay switch, described first delay switch is serially connected between the negative pole of described DC power supply and the positive pole of described power distribution cabinet, and described second delay switch is serially connected between the negative pole of described power distribution cabinet and the negative pole of described inversion module.
8. inverter according to claim 1, is characterized in that, described DC power supply charging module comprises:
Combined-voltage table, wherein, described combined-voltage list catenation is between the negative pole and ground of described power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539636.9U CN204068851U (en) | 2014-09-17 | 2014-09-17 | Inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420539636.9U CN204068851U (en) | 2014-09-17 | 2014-09-17 | Inverter |
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| CN204068851U true CN204068851U (en) | 2014-12-31 |
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| CN201420539636.9U Expired - Fee Related CN204068851U (en) | 2014-09-17 | 2014-09-17 | Inverter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682858A (en) * | 2015-02-07 | 2015-06-03 | 杭州桑尼能源科技有限公司 | Photovoltaic PID elimination circuit and method |
| CN106712253A (en) * | 2017-01-09 | 2017-05-24 | 上海电器科学研究所（集团）有限公司 | Device and method used in photovoltaic power plant for monitoring and suppressing potential induced degradation effect |
| EP3291442A1 (en) * | 2016-08-29 | 2018-03-07 | LSIS Co., Ltd. | Photovoltaic inverter |
-
2014
- 2014-09-17 CN CN201420539636.9U patent/CN204068851U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682858A (en) * | 2015-02-07 | 2015-06-03 | 杭州桑尼能源科技有限公司 | Photovoltaic PID elimination circuit and method |
| EP3291442A1 (en) * | 2016-08-29 | 2018-03-07 | LSIS Co., Ltd. | Photovoltaic inverter |
| US10090754B2 (en) | 2016-08-29 | 2018-10-02 | Lsis Co., Ltd. | Photovoltaic inverter |
| CN106712253A (en) * | 2017-01-09 | 2017-05-24 | 上海电器科学研究所（集团）有限公司 | Device and method used in photovoltaic power plant for monitoring and suppressing potential induced degradation effect |
| CN106712253B (en) * | 2017-01-09 | 2023-08-01 | 添唯检验检测(江苏)有限公司 | Device and method for monitoring and inhibiting potential induced attenuation effect for photovoltaic power station |
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