CN107134917A - A kind of inverter control method, device and electricity generation system - Google Patents
A kind of inverter control method, device and electricity generation system Download PDFInfo
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- CN107134917A CN107134917A CN201610111601.9A CN201610111601A CN107134917A CN 107134917 A CN107134917 A CN 107134917A CN 201610111601 A CN201610111601 A CN 201610111601A CN 107134917 A CN107134917 A CN 107134917A
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- inverter
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- power supply
- control
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000005611 electricity Effects 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims description 53
- 238000002955 isolation Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 abstract description 18
- 230000002123 temporal effect Effects 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- H02J3/383—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/34—Conversion of dc power input into dc power output with intermediate conversion into ac by dynamic converters
- H02M3/38—Conversion of dc power input into dc power output with intermediate conversion into ac by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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 provides a kind of inverter control method, device and electricity generation system, the inverter control includes：Monitor the input voltage of inverter；Compare input voltage and default stopping voltage；When input voltage is less than voltage is stopped, the power supply of inverter is closed.Pass through the implementation of the present invention, monitor the input voltage of inverter, when less than voltage is stopped, close the power supply of inverter, and then completely close the control circuit of inverter, to reduce power consumption of the control circuit at night of inverter, further, pass through inverter input voltage of sampling, in conjunction with whether be night temporal information, it is possible to achieve in the case that inverter input voltage deficiency can not generate electricity at night, pass through such a method, inverter loss of itself when that can not generate electricity at night can be greatly reduced, inverter generating efficiency is improved.
Description
Technical field
The present invention relates to field of photovoltaic power generation, more particularly to a kind of inverter control method, device and the system that generates electricity
System.
Background technology
Solar panel and inverter are used as two most important parts in grid-connected photovoltaic system, its energy
Conversion efficiency is measured just into the good and bad important indicator of assessment system.Although solar energy resources theoretically takes
Not to the utmost, it is nexhaustible, but be due to sunshine radiation density it is relatively low, cause most of solar-electricities
Pond plate and conversion efficiency are only 10%~20% or so.In this context, the conversion efficiency of photovoltaic DC-to-AC converter should be use up
Possibly improve, so that the efficiency of whole photovoltaic generating system reaches maximum.
Solar photovoltaic inverter typically all has automatic running and automatic shutdown function, after morning sunrise, too
The radiation intensity of sunlight gradually strengthens, and the output of solar panel also increases therewith, works as solar panel
Output voltage when reaching the input voltage lower limit of inverter, inverter just can Auto Power On operation.Inverter
Monitoring system can monitor the output of solar panel constantly, as long as the power output of solar panel
More than the power output needed for inverter, inverter just being capable of continuous service.At dusk at sunset, solar-electricity
Pond plate output gradually be less than inverter needed for output, inverter can automatic shutdown, into holding state,
In morning at sunrise, and Auto Power On, daily circular flow.
Solar photovoltaic inverter is when entering the dusk, because input voltage is too low, into holding state, this
When inverter can not generate electricity, but the control circuit of inverter is still within power consumption state, the damage of this part
Consumption is without any value.Now in the art, photovoltaic DC-to-AC converter night typically all maintains 100W from loss
Level, for this part consume power all do not take respective handling measure, this part idle work of leaving disappears
Consumption, this is the difficult receiving of comparison for the photovoltaic DC-to-AC converter for paying close attention to efficiency.Therefore photovoltaic DC-to-AC converter night is reduced
Just seem important from loss.
Therefore, how to provide it is a kind of can reduce the inverter management method of night inverter power consumption, be ability
Field technique personnel technical problem urgently to be resolved hurrily.
The content of the invention
The invention provides a kind of inverter control method, device and electricity generation system, to solve existing inverter
The problem of there is night unnecessary power consumption during work.
The invention provides a kind of inverter control method, it includes：
Monitor the input voltage of inverter；
Compare input voltage and default stopping voltage；
When input voltage is less than voltage is stopped, the power supply of inverter is closed.
Further, closing the power supply of inverter includes：The power supply of inverter is closed by magnet coil
Power supply.
Further, the input voltage of monitoring inverter includes：Inverter is obtained by way of light-coupled isolation
Input voltage.
Further, when input voltage is less than voltage is stopped, before inverter is closed, in addition to：Sentence
It is disconnected whether to be in evening hours section, if so, inverter is then closed, if it is not, not closing inverter then.
Further, after inverter is closed, in addition to：Detect whether to be in day time period, if so,
Then open inverter.
The invention provides a kind of control device for inverter, it includes：
Monitoring module, the input voltage for monitoring inverter；
Comparing module, for comparing input voltage and default stopping voltage；
Control module, for when input voltage is less than voltage is stopped, closing the power supply of inverter.
Further, control module is used for the power supply that inverter is closed by magnet coil.
Further, monitoring module is used for the input voltage that inverter is obtained by way of light-coupled isolation.
Further, when input voltage is less than voltage is stopped, before inverter is closed, control module is also
For judging whether in evening hours section, if so, inverter is then closed, if it is not, not closing inverter then.
Further, after inverter is closed, control module is additionally operable to detect whether to be in day time period,
If so, then opening inverter.
The invention provides a kind of electricity generation system, it includes photovoltaic battery panel, and inverter, and the present invention are carried
The control device for inverter of confession.
Beneficial effects of the present invention：
The invention provides a kind of new inverter control method, by monitoring the input voltage of inverter, when
During less than stopping voltage, the power supply of inverter is closed, and then completely closes the control circuit of inverter,
To reduce power consumption of the control circuit at night of inverter.Further, by inverter input voltage of sampling,
In conjunction with whether be night temporal information, it is possible to achieve can not be generated electricity in night inverter input voltage deficiency
In the case of, by such a method, inverter loss of itself when that can not generate electricity at night can be greatly reduced,
Improve inverter generating efficiency.
Brief description of the drawings
The structural representation for the control device for inverter that Fig. 1 provides for first embodiment of the invention；
The flow chart for the inverter control method that Fig. 2 provides for second embodiment of the invention；
The structural representation for the control device for inverter that Fig. 3 provides for third embodiment of the invention；
Fig. 4 is the circuit diagram of control device for inverter in third embodiment of the invention；
Fig. 5 is the flow chart of inverter control method in third embodiment of the invention.
Embodiment
Further annotation explanation is now made to the present invention by way of embodiment combination accompanying drawing.
First embodiment：
The structural representation for the control device for inverter that Fig. 1 provides for first embodiment of the invention, can by Fig. 1
Know, in the present embodiment, the control device for inverter 1 that the present invention is provided includes：
Monitoring module 11, the input voltage for monitoring inverter；
Comparing module 12, for comparing input voltage and default stopping voltage；
Control module 13, for when input voltage is less than voltage is stopped, closing the power supply of inverter.
In certain embodiments, the control module 13 in above-described embodiment is used to close inversion by magnet coil
The power supply of device.
In certain embodiments, the monitoring module 11 in above-described embodiment is used to obtain by way of light-coupled isolation
Take the input voltage of inverter.
In certain embodiments, it is above-mentioned before inverter is closed when input voltage is less than voltage is stopped
Control module 13 in embodiment is additionally operable to judge whether in evening hours section, if so, inverter is then closed,
If it is not, not closing inverter then.
In certain embodiments, after inverter is closed, the control module 13 in above-described embodiment is additionally operable to
Detect whether to be in day time period, if so, then opening inverter.
Corresponding, the invention provides a kind of electricity generation system, it includes photovoltaic battery panel, inverter, and
The control device for inverter that the present invention is provided.
Second embodiment：
The flow chart for the inverter control method that Fig. 2 provides for second embodiment of the invention, as shown in Figure 2,
In the present embodiment, the inverter control method that the present invention is provided comprises the following steps：
S201：Monitor the input voltage of inverter；
S202：Compare input voltage and default stopping voltage；
S203：When input voltage is less than voltage is stopped, the power supply of inverter is closed.
In certain embodiments, the power supply of the closing inverter in above-described embodiment includes：Pass through electromagnetism
Coil closes the power supply of inverter.
In certain embodiments, the input voltage of the monitoring inverter in above-described embodiment includes：Pass through optocoupler
The mode of isolation obtains the input voltage of inverter.
In certain embodiments, it is above-mentioned before inverter is closed when input voltage is less than voltage is stopped
Method in embodiment also includes：Judge whether in evening hours section, if so, inverter is then closed, if
It is no, then do not close inverter.
In certain embodiments, the method in above-described embodiment close inverter after, in addition to：Detection
Whether day time period is in, if so, then opening inverter.
Further annotation explanation is done to the present invention in conjunction with concrete application scene.
3rd embodiment：
Problem of the prior art be that not under nighttime conditions the non-power circuit of inverter control
System, maintains holding state all the time, and can not now generate electricity.The present invention proposes that a kind of reduction is inverse
Become device night from the method being lost, the input voltage by inverter of sampling and the time letter according to monitoring system
Breath judges the state of inverter, night input voltage is relatively low can not generate electricity when, the control for cutting off inverter is electric
Source, only retains the power supply of monitoring system, when power generation conditions are met inverter in the morning, and monitoring system is received
Power-on command, then the power supply of control circuit is connected, inverter is started generating.Using this method with regard to maximum limit
Inverter is reduced at night from being lost, now, the loss certainly of inverter only includes monitoring system degree,
And the loss of monitoring system is relatively small, asked this addresses the problem a series of present in prior art
Topic.
The technical problems to be solved by the invention are：The present invention overcomes photovoltaic DC-to-AC converter night damage in the prior art
The problem of consuming larger, by inverter input voltage of sampling, in conjunction with whether be night temporal information, control
The auxiliary supply transformer input of inverter processed, it is possible to achieve can not in night inverter input voltage deficiency
In the case of generating, the control accessory power supply part of inverter is cut off, only retains the power supply of monitor portion.Protect
The power supply for staying monitor portion is to control accessory power supply to be connected in morning, enables inverter just
Often work.By such a method, inverter loss of itself when that can not generate electricity at night can be greatly reduced,
Improve inverter generating efficiency.
As shown in figure 3, the control device for inverter bag for the reduction photovoltaic DC-to-AC converter night loss that the present invention is provided
Include the voltage sampling circuit 31 sampled to photovoltaic battery panel output voltage, the main control unit of control inverter output
32, the monitoring unit 33 of inverter state is monitored, the timer 34 of timing is carried out to the time, to voltage sample
The control power supply 35 that circuit and main control unit are powered, the monitoring power supply 36 powered to monitoring unit；The voltage
The output end of sample circuit 31 is connected to the input of main control unit 32, and the main control unit 32 and monitoring are single
Member 33 is connected with each other, and the output end of the timer 34 is connected to the input of monitoring unit 33, the control
The output end of power supply 35 processed is connected respectively to voltage sampling circuit 31 and main control unit 32, the monitoring power supply
36 output end is connected to monitoring unit 33, and the monitoring unit 33 is connected to control power supply 35.
Specifically, according to functional module, it includes：It is used for inverter input voltage of sampling in A, accompanying drawing 3
Voltage sampling circuit；It is used for the main control unit for controlling photovoltaic DC-to-AC converter output state in B, accompanying drawing 3；It is C, attached
It is used to monitor inverter state in Fig. 3 and operates the monitoring unit of inverter main control unit；Used in D, accompanying drawing 3
In the timer of recording time information；The control power supply powered in E, accompanying drawing 3 to control unit is (with monitoring electricity
Source isolates, independently-powered)；Powered in F, accompanying drawing 3 to monitoring unit monitoring power supply (with control power supply every
From independently-powered)；Power supply switch circuit is controlled in G, accompanying drawing 4, its repeat circuit K3 is used as control electricity
The switching switch in source, K3 control coil side is powered and controlled by monitoring system.A, B, C, D constitute photovoltaic
The control section of inverter, the auxiliary electric control system that E, F, G are constituted can be by being switched on or off the control of inverter
Power supply processed realizes the purpose of night energy-conservation, and two parts collectively form the control system of photovoltaic DC-to-AC converter.
In the present invention, the input of the output voltage, i.e. inverter of voltage sampling circuit sampling photovoltaic battery panel
Voltage, the running status for controlling inverter, main control unit is used for the output for controlling inverter, and monitoring is single
Member is used for the service data for gathering main control unit, while issuing the corresponding command to main control unit, timer is used for
To the daily timing of inverter.Monitoring unit can issue phase according to clocking information combination correlation behavior to main control unit
The order answered, control power supply is used to power to voltage sampling circuit and main control unit, and monitoring power supply is used for prison
Control unit is powered.Wherein, main control unit and monitoring unit realize communication and data exchange by light-coupled isolation.
The method and apparatus provided using the present invention, it is compared with prior art, relatively simple in control circuit
In the case of, the purpose of reduction photovoltaic DC-to-AC converter night loss is realized to greatest extent.With 500KW photovoltaic
Exemplified by inverter, after the method using the present invention switches off control circuit with power supply, photovoltaic DC-to-AC converter can be saved
Save at least 100W power consumption.It can not be generated electricity calculating, a photovoltaic inversion with 10 hours photovoltaic DC-to-AC converter nights
The evening of device one can save 1 degree of electricity, can save within 1 year 365 degree of electricity.Therefore, the present invention has provided the user one
Low cost, the power save mode of dependable performance are planted, the generating efficiency of product is improved, enhances the competition of product
Power.
In the present invention, as shown in figure 4, the particular circuit configurations of controlling power circuit 35 are as described below：
Controlling power circuit 35 connects the zero line and live wire of AC network, the T1 by T1 and T2 ends respectively
Industrial Frequency Transformer Tr input one end is connected to behind the contact that end passes through relay K1, the T2 ends directly connect
It is connected to the Industrial Frequency Transformer Tr input other end.The coil-end of the relay K1 is powered by monitoring power supply,
And by monitoring unit control.The control transformer Tr inputs input line voltage after isolated buck
To the current rectifying and wave filtering circuit being made up of D1 and C1.The output of the current rectifying and wave filtering circuit of D1 and the C1 composition
It is connected to DC/DC power modules U1 input.The DC/DC power modules U1 is output as DC48V
Power supply ,+48V ends are named as T3, and correspondence GND ends are named as T4.
Wherein, control power supply 35 primarily as the control accessory power supply part of photovoltaic DC-to-AC converter, the power supply is defeated
The DC48V gone out is available for control section circuit to use, and emphasis of the invention is to be in the partial circuit to relay
Device K1 control.As described above, relay K1 coil is controlled by monitoring unit, and relay K1
For normally-closed contact relay.Voltage sampling circuit is transmitted after the input voltage of inverter is sampled to master control list
Member, main control unit is transmitted voltage data to monitoring by light-coupled isolation communication after sample voltage value is handled
Unit.Monitoring unit judges it is daytime or night according to the information of timer, if night, and inversion
The input voltage of device is less than limit value, and monitoring unit is to judge the state that the state can not generate electricity for night, this
When send Energy Saving Control signal, control relay K1 contact disconnects.Power supply is controlled due to inputting by relay
K1 break of contact, the DC48V power down of output, voltage sampling circuit and main control unit are complete power down, inverse
Become device shutdown without output, realize the purpose of night energy-conservation.
Restart three periods to illustrate the present invention from normal condition on daytime, night power save mode and early morning below
Implement process.For convenience, by inverter normal working voltage range flags be Vmin~
Vmax, input voltage when night inverter is stopped is labeled as Vstop.Specific work process such as Fig. 5 institutes
Show.As shown in figure 5, inverter control method comprises the following steps：
S501：During normal condition on daytime, solar panel illumination is sufficient, and inverter input voltage is generally
Vmin~Vmax, in the input voltage range, the main power section of photovoltaic DC-to-AC converter is can be with normal work
's.Voltage sampling circuit is sampled after input voltage, and the numeral magnitude of voltage being sent in main control unit is believed
Number processor, digital signal processor leads to magnitude of voltage after processing and preservation by the CAN of light-coupled isolation
Believe circuit transmission into monitoring unit.Monitoring unit is according to the input voltage value received, in conjunction with timer
Clocking information be 6:00~20:Between 00, it can determine whether out that now state is input voltage normal condition on daytime,
Now, monitoring unit does not send out control signal to relay K1.Because relay K1 is normally-closed contact relay,
AC network can control power supply electricity by relay K1 contact portion to Industrial Frequency Transformer Tr input
Road is connected, and output T3 and T4 ends are DC48V voltages, and main control unit is powered normally, and inverter is normally exported.
S502-S507：During night, because solar panel illumination gradually weakens, inverter input voltage by
Gradually reduce.When inverter input voltage is less than Vstop, the sampled circuit of the magnitude of voltage is sent to master control list
Member, main control unit is by the magnitude of voltage by CAN communication circuit transmission to monitoring unit.Monitoring unit further according to
The information of timer is 20:00~6:00, it can determine whether out that now state is the state that can not be generated electricity at night, this
When, monitoring unit sends control signal to relay K1, and driving relay K1 contact disconnects.Due to after
Electrical equipment K1 contact disconnects, and the voltage of AC network is not connectable to Industrial Frequency Transformer Tr, controls power supply power-fail,
DC-free 48V is exported, and voltage sampling circuit and main control unit unpowered, inverter shut down without output, is entered at nightfall
Between energy saver mode.
S508：During m seq, illumination gradually strengthens, and inverter input voltage gradually increases, but is due to
During night, power cut-off is controlled, causes voltage sampling circuit and the equal unpowered of main control unit, inversion now
Device input voltage can not sample.As it was previously stated, control power supply and monitoring power supply are independently powered,
Monitoring power supply always be will not power down, therefore, the clocking information of timer exists always, in meter
When to early morning 6:After 00, monitoring unit sends disconnection control signal to relay K1, and relay K1's touches
Point switchs to adhesive by disconnection, and control power supply is started working, and voltage sampling circuit and main control unit are powered normally,
When inverter input voltage is in the range of Vmin~Vmax, inverter is normally exported.As above process is circulated,
The control process described in this patent can be achieved.
In actual applications, the Energy Saving Control of inverter needs to combine inverter input voltage and the aspect of time two
Information, due to inverter input voltage under complicated weather condition may daytime suddenly by more than Vmin
Below Vstop is down to, if now not binding time information, control inverter is in energy saver mode, then can
Inverter is caused to frequently switch on the situation of machine on daytime.Believed in this patent according to input voltage in conjunction with the time
The occurrence of mode of breath effectively prevent above-mentioned.
In addition, the normal work input voltage range of inverter is Vmin~Vmax, it is less than in input voltage
Energy saver mode is in during Vstop.The purpose being arranged such is to prevent inverter from being that Vmin is attached in input voltage
During nearly fluctuation, inverter is abnormal caused by normal mode of operation and energy saver mode frequent switching.
The temporal information of monitoring unit record described in this patent can be adjusted according to different application scenarios
Set, to meet the practical situations of different scenes.
In summary, by the implementation of the present invention, at least there is following beneficial effect：
The invention provides a kind of new inverter control method, by monitoring the input voltage of inverter, when
During less than stopping voltage, the power supply of inverter is closed, and then completely closes the control circuit of inverter,
To reduce power consumption of the control circuit at night of inverter.Further, by inverter input voltage of sampling,
In conjunction with whether be night temporal information, it is possible to achieve can not be generated electricity in night inverter input voltage deficiency
In the case of, by such a method, inverter loss of itself when that can not generate electricity at night can be greatly reduced,
Improve inverter generating efficiency.
It the above is only the embodiment of the present invention, any formal limitation not done to the present invention,
It is every according to the present invention technical spirit embodiment of above is made any simple modification, equivalent variations,
With reference to or modification, still fall within the protection domain of technical solution of the present invention.
Claims (11)
1. a kind of inverter control method, it is characterised in that including：
Monitor the input voltage of the inverter；
Compare the input voltage and default stopping voltage；
When the input voltage is less than the stopping voltage, the power supply of the inverter is closed.
2. inverter control method as claimed in claim 1, it is characterised in that the closing is described inverse
Becoming the power supply of device includes：The power supply of the inverter is closed by magnet coil.
3. inverter control method as claimed in claim 1, it is characterised in that the monitoring is described inverse
Becoming the input voltage of device includes：The input voltage of the inverter is obtained by way of light-coupled isolation.
4. the inverter control method as described in any one of claims 1 to 3, it is characterised in that work as institute
When stating input voltage less than the stopping voltage, before the inverter is closed, in addition to：Judge whether
In evening hours section, if so, the inverter is then closed, if it is not, not closing the inverter then.
5. inverter control method as claimed in claim 4, it is characterised in that closing the inversion
After device, in addition to：Detect whether to be in day time period, if so, then opening the inverter.
6. a kind of control device for inverter, it is characterised in that including：
Monitoring module, the input voltage for monitoring the inverter；
Comparing module, for comparing the input voltage and default stopping voltage；
Control module, for when the input voltage is less than the stopping voltage, closing the inverter
Power supply.
7. control device for inverter as claimed in claim 6, it is characterised in that the control module is used
In the power supply that the inverter is closed by magnet coil.
8. control device for inverter as claimed in claim 6, it is characterised in that the monitoring module is used
In the input voltage that the inverter is obtained by way of light-coupled isolation.
9. the control device for inverter as described in any one of claim 6 to 8, it is characterised in that work as institute
When stating input voltage less than the stopping voltage, before the inverter is closed, the control module is also used
In judging whether in evening hours section, if so, the inverter is then closed, if it is not, not closing then described
Inverter.
10. control device for inverter as claimed in claim 9, it is characterised in that closing the inversion
After device, the control module is additionally operable to detect whether to be in day time period, if so, then opening described inverse
Become device.
11. a kind of electricity generation system, it is characterised in that including photovoltaic battery panel, inverter, and such as right
It is required that the control device for inverter described in 6 to 10 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610111601.9A CN107134917A (en) | 2016-02-29 | 2016-02-29 | A kind of inverter control method, device and electricity generation system |
| PCT/CN2017/072977 WO2017148241A1 (en) | 2016-02-29 | 2017-02-06 | Inverter control method, device, and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610111601.9A CN107134917A (en) | 2016-02-29 | 2016-02-29 | A kind of inverter control method, device and electricity generation system |
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| CN107134917A true CN107134917A (en) | 2017-09-05 |
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| CN201610111601.9A Pending CN107134917A (en) | 2016-02-29 | 2016-02-29 | A kind of inverter control method, device and electricity generation system |
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| CN (1) | CN107134917A (en) |
| WO (1) | WO2017148241A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891760A (en) * | 2017-12-26 | 2018-04-10 | 北京交通大学 | A kind of city railway vehicle Vehicular solar electric power system |
| CN112803741A (en) * | 2020-12-31 | 2021-05-14 | 航天柏克(广东)科技有限公司 | Automatic start-stop control method and circuit for photovoltaic system inverter |
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| CN117240057B (en) * | 2023-11-09 | 2024-03-26 | 杭州禾迈电力电子股份有限公司 | Power converter, control method thereof and photovoltaic power generation system |
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| CN104253530B (en) * | 2013-06-27 | 2017-04-05 | 比亚迪股份有限公司 | Photovoltaic DC-to-AC converter and its control method and photovoltaic generating system |
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| CN101860266A (en) * | 2010-04-02 | 2010-10-13 | 艾默生网络能源有限公司 | Photovoltaic inverter power saving control system and method |
| CN103683998A (en) * | 2013-12-19 | 2014-03-26 | 华为技术有限公司 | Method and device for reducing nighttime power consumption of photovoltaic inverter |
| CN104967344A (en) * | 2015-06-10 | 2015-10-07 | 中国电力工程顾问集团华东电力设计院有限公司 | Step-down grid-connected photovoltaic inverter and startup method thereof |
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| CN107891760A (en) * | 2017-12-26 | 2018-04-10 | 北京交通大学 | A kind of city railway vehicle Vehicular solar electric power system |
| CN112803741A (en) * | 2020-12-31 | 2021-05-14 | 航天柏克(广东)科技有限公司 | Automatic start-stop control method and circuit for photovoltaic system inverter |
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| WO2017148241A1 (en) | 2017-09-08 |
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