CN206807027U - Solar power generation emergency power supply system - Google Patents
Solar power generation emergency power supply system Download PDFInfo
- Publication number
- CN206807027U CN206807027U CN201720531116.7U CN201720531116U CN206807027U CN 206807027 U CN206807027 U CN 206807027U CN 201720531116 U CN201720531116 U CN 201720531116U CN 206807027 U CN206807027 U CN 206807027U
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- CN
- China
- Prior art keywords
- grid
- network
- power supply
- power generation
- supply system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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 utility model discloses a kind of solar power generation emergency power supply system, grid-connected/off-network photovoltaic generating system in parallel including independent photovoltaic generating system and therewith, the independent photovoltaic generating system includes the first solar cell module, DC/DC converters and battery for boosting, is provided between the DC/DC converters and battery and is used to prevent accumulator super-charge from crossing the photovoltaic controller put；Grid-connected/off-network the photovoltaic generating system includes the second solar cell module and the combining inverter for grid-connected/off-network switching, and the combining inverter includes DC/DC control modules and DC/AC control modules；The utility model is based on reliable and stable, low-carbon environment-friendly solar power generation principle, it will generate electricity by way of merging two or more grid systems to generate electricity with off-network and be combined, automatically controlled according to the realization of the concrete condition of power network, two kinds of power generation operation patterns of Intelligent adjustment, while ensure that generating effect under emergency rating, additionally it is possible to obtain preferably economic benefit by generating electricity by way of merging two or more grid systems in daily life.
Description
Technical field
It the utility model is related to grid-connected power generation system, more particularly to a kind of solar power generation emergency power supply system.
Background technology
Caused by the today's society that natural calamity takes place frequently, the destruction brought along with burst natural calamity to power system
The problems such as power failure, brings very big resistance to rescue and relief work.After calamity in the case where power system is all interrupted, communication system
It is very important that system can not work, hospital can not give treatment to the secondary disaster that fear of the wounded and masses suffering from disaster etc. is brought, secondly, profit
A large amount of greenhouse gases can be produced with the electricity generation system of fossil fuel, environment is harmful to, new energy is widelyd popularize in nowadays country
Under background, traditional power supply mode is no longer praised highly because of its drawback and flaw.
Utility model content
Purpose of utility model：In view of the above-mentioned problems of the prior art, the purpose of this utility model be to provide one kind can
Carry out grid-connected work under normal circumstances, the solar power generation emergency power supply system of in emergency circumstances off-network power supply.
Technical scheme：A kind of solar power generation emergency power supply system described in the utility model, including independent photovoltaic generate electricity
System and grid-connected/off-network photovoltaic generating system in parallel therewith, the independent photovoltaic generating system include the first solar cell
Component, DC/DC converters and battery for boosting, it is provided between the DC/DC converters and battery and is used to prevent
Accumulator super-charge crosses the photovoltaic controller put；Grid-connected/off-network the photovoltaic generating system include the second solar cell module and
For the combining inverter of grid-connected/off-network switching, the combining inverter includes DC/DC control modules and DC/AC control modules,
The output end of the DC/AC control modules connection DC/DC control modules.The combining inverter preferably uses ATmega64 conducts
Main control chip.
What the detection control circuit and battery that the photovoltaic controller includes being used to provide pulse triggering signal were in series
Fuse FU, the anti-reverse diode VD being in parallel with battery, it is connected in parallel on the first of the first solar cell module output end
The second transistor V2 of transistor V1 and series connection in circuit.Preferably, the photovoltaic controller also include light-operated switch and
Time switch, in order to facilitate monitoring system working condition, photovoltaic controller can be with an external display screen.
The DC/DC control modules include PWM generation circuits and high frequency transformer TR, the PWM generation circuits both ends point
Not Chuan Lian an IR2110s driving chip, the IR2110s driving chips connect four IGBT IGCTs, the IGBT crystal
Pipe is connected with high frequency transformer, and high frequency transformer provides pulse pulse signal to igbt transistor.Preferably, the PWM is produced
Circuit uses UC3875 chips.
The DC/AC control modules include full bridge inverter, filter circuit, grid-connected/off-network switch protecting circuit, electric current
Feedback control circuit and Voltage Feedback control circuit；The full bridge inverter is made up of four igbt transistors；Answered when described
When anxious electric power system carries out grid-connected mode of operation, the grid-connected/off-network switch protecting circuit connection Current Feedback Control Circuit, enter
During row off-network independent working mode, the grid-connected/off-network switch protecting circuit connection Voltage Feedback control circuit.
Beneficial effect：Compared with prior art, it is the advantages of the utility model：The utility model system development is using newly
The energy can reduce the use of fossil fuel, reduce the discharge of greenhouse gases, and its environment friendly is self-evident；Secondly, can
The switching of grid-connected/off-network pattern is realized, good economic benefit can be brought by being generated electricity by way of merging two or more grid systems under nonemergency, so as to mitigate
Cost is installed and used, is in case of emergency significant for rescue and relief work and protection people's property safety；The system is made
For emergency generation system, secondary battery protection circuit and protecting solar cell circuit are additionally arranged so that system is stable, efficiently transports
OK.
Brief description of the drawings
Fig. 1 is the utility model 5Kw solar energy emergency power supply system structural representations；
Fig. 2 is the control principle drawing that the anti-overcharge mistake of battery of the present utility model is put；
Fig. 3 is the DC/DC control module design drawings of the utility model inverter section；
Fig. 4 is the DC/AC control module design drawings of the utility model inverter section.
Embodiment
The technical solution of the utility model is described in further detail with reference to embodiment and accompanying drawing.
As shown in figure 1, a kind of solar power generation emergency power supply system, the system includes the He of independent photovoltaic generating system 1
Grid-connected/off-network photovoltaic generating system 2 in parallel, the independent photovoltaic generating system 1 include the first solar cell module therewith
101st, the DC/DC converters 102 and battery 103 for boosting, sets between the DC/DC converters 102 and battery 103
It is equipped with the photovoltaic controller 104 put for preventing accumulator super-charge from crossing；Grid-connected/off-network the photovoltaic generating system 2 includes second
Solar cell module 201 and the combining inverter 202 for grid-connected/off-network switching, the combining inverter 202 include DC/
DC control modules and DC/AC control modules；The utility model is based on switch type photovoltaic generating system principle, has merged off-network and simultaneously
Net both of which, form the function that automatic running is generated electricity by way of merging two or more grid systems with off-network power switching.In the present embodiment, the first solar-electricity
Pond component 101 is 250w solar cell modules, and the second solar cell module 201 is 5kw solar cell modules；Work as system
Using generate electricity by way of merging two or more grid systems pattern when, usually when weather is good, illumination is sufficient and the situation of major natural disasters does not occur, now
250W solar module normal works, to storage battery power supply；5KW solar cell modules electricity generation grid-connecting produces good to power network
Good economic benefit.During using off-network power generation mode, usually locality runs into burst natural calamity, causes accumulator electric-quantity insufficient
Occur having a power failure with power network, situation about rationing the power supply, now can be with independent operating to storage battery power supply, in the second mode, the system
I.e. as the important places such as emergency communication power supply, Medical Devices, gas station, refuge instruction and illumination or emergency load power supply
System.
The effect of photovoltaic controller 104 is to control the working condition of whole system, and its function mainly prevents battery mistake
Charge protection, battery overdischarge protection, system short-circuit Electronic Protection, system protection to error-polarity connection, night, which take precautions against, fills protection etc..
In the place that the temperature difference is larger, controller also has the function of temperature-compensating.In addition, controller also has light-operated switch, time switch
Etc. mode of operation, and the function of the display of the various working conditions such as charged state, accumulator electric-quantity.As shown in Fig. 2 it is electric power storage
The anti-overcharge mistake in pond, which is given out light, lies prostrate control principle drawing；Have MOSFET high input impedance and the low conducting pressures of GTR concurrently based on transistor IGBT
Advantage of both drop, the photovoltaic control circuit include detection control circuit, fuse FU, diode VD, the first transistor
The second transistor V2 of V1 and series connection in circuit.Wherein, the first transistor V1 is connected in parallel on the output end of solar cell.When
Battery tension exceedes when being full of off voltage of battery setting, and the first transistor V1 is short-circuit by battery, no longer to electric power storage
Pond is charged, and so as to ensure that battery is not in overcharge, plays a part of battery " additives for overcharge protection ".The first transistor V1
There are " anti-reverse charging " effect, only when solar cell module output voltage is more than battery tension, V1 ability simultaneously
Conducting, otherwise V1 cut-offs, so as to be not in battery when ensureing night and rainy weather to solar cell reverse charging, rise
Acted on to battery " anti-reverse charging ".Pulse triggering signal is provided by detection control circuit, and second transistor V2 is battery
Discharge switch, when appearance load is overloaded or be short-circuit, line current is much larger than rated current, and V2 is blocked, and plays " output overloading
Protection " and " output short circuit protection " effect.Meanwhile when battery tension is much smaller than " overdischarge pressure ", V2 will also be blocked,
Carry out " over ".VD2 is " anti-reverse diode ", when accumulator polarity is reversed, VD2 conductings, passes through battery
VD2 short circuit dischanges, produce very big electric current and quickly blow fuse FU, circuit plays " electricity storage preventing pond reverse connecting protection " effect.
The device such as V1, V2, VD2 and fuse FU has collectively constituted secondary battery protection circuit, and the circuit has circuit letter, valency
The characteristics of lattice are cheap, charge circuit loss is small, control efficiency is high.
Combining inverter 202 is made up of parts such as charge and discharge control, power adjusting, ac converter, grid-connected protection switchings, is passed through
Used by the alternating current of inverter output for load, unnecessary electric energy can be public by the equipment adverse current feed-in such as power transformer
Power network charges a battery.It is mainly made up of two parts, and Part I is DC/DC control modules, Part II DC/
AC control modules.Inverter general principle mainly passes through high frequency DC/DC converter techniques, and low-voltage DC inversion is turned into high frequency
Low-voltage AC, then boosted by high frequency transformer, then 380V or so high pressure is rectified into by rectifier filter circuit
Direct current, the industrial-frequency alternating current that 220V is obtained finally by power frequency inverter circuit use for load.The design feature of this circuit
The advantages that open circuit loss very little, inversion efficiency are high, stable, the distortion factor is small.
In the present embodiment, combining inverter uses the high-performance of atmel corp's production, the 8-bit microprocessor of low-power consumption
ATmega64 is Master control chip, the chip have advanced risc architecture, 53 programmable I/O mouth lines, 64 pin TQFP with
64 pin MLF are encapsulated, and operating voltage is in 2.7-5.5V, and when working in 16MHz, performance is up to 16MIPS.
The structure principle chart of DC/DC control modules is illustrated in figure 3, using UC3875 chips, the chip can produce four
Road PWM square waves, the feedback signal exported by receiving voltage sensor, compared with internal 2.5V standard signal, adjustment four
The phase difference of road PWM ripples, four igbt transistors then are driven in two driving chip IR2110s driving chips, so as to reach
Control DC/DC modules and the purpose of closed-loop control.This circuit includes input overcurrent protection, and when inputting excessively stream, system produces
Protection signal by being made comparisons with the excessively stream threshold values of UC3875 chip internals after signal condition, jump chip UC3875 lockings
Stop；Main control chip Mega64 provides 128KHZ synchronizing signal for UC3875 by SYN and SS pin and starts shutdown signal.
The structure principle chart of DC/AC control modules is as shown in figure 4, grid-connected and off-network is incorporated into an electricity by the control circuit
In the system of road.Inputted as inversion by the high direct voltage of DC/DC block transforms device output, be made up of four igbt transistors
Full bridge inverter, then the filter circuit by output produces required sinusoidal 220V/50Hz alternating currents again.Inverter circuit has
Two kinds of mode of operations, one kind are off-network stand-alone modes, to local load supplying, are controlled using Voltage Feedback.Another kind is grid-connected
Pattern, the electric energy after inversion is given to power network, using Current Feedback Control.
The utility model make use of and be generated electricity by way of merging two or more grid systems and both off-network generatings by the application for solar energy power generating
Advantage is combined, and system emergency generating effect is significantly lifted.In addition the design of controller circuitry is to balancing light
Energy, protection battery and the normal work of solar cell and whole circuit of volt system serve important function.
Claims (8)
- A kind of 1. solar power generation emergency power supply system, it is characterised in that：It is including independent photovoltaic generating system (1) and in parallel therewith Grid-connected/off-network photovoltaic generating system (2), the independent photovoltaic generating system (1) includes the first solar cell module (101), the DC/DC converters (102) and battery (103) for boosting, in the DC/DC converters (102) and battery (103) photovoltaic controller (104) put for preventing accumulator super-charge from crossing is provided between；Grid-connected/off-network photovoltaic generation the system System (2) includes the second solar cell module (201) and combining inverter (202) for grid-connected/off-network switching, described grid-connected Inverter (202) includes DC/DC control modules and DC/AC control modules, the DC/AC control modules connection DC/DC control moulds The output end of block.
- 2. solar power generation emergency power supply system according to claim 1, it is characterised in that：The photovoltaic controller (104) the detection control circuit for being used to provide pulse triggering signal, the fuse FU and battery that are in series with battery are included The anti-reverse diode VD that is in parallel, it is connected in parallel on the first transistor V1 of the first solar cell module output end and is connected on Second transistor V2 in circuit.
- 3. solar power generation emergency power supply system according to claim 1, it is characterised in that：The DC/DC control modules Including PWM generation circuits and high frequency transformer TR, the PWM generation circuits both ends are connected an IR2110s driving chip respectively, The IR2110s driving chips connect four IGBT IGCTs, and the igbt transistor is connected with high frequency transformer.
- 4. solar power generation emergency power supply system according to claim 3, it is characterised in that：The PWM generation circuits are adopted With UC3875 chips.
- 5. solar power generation emergency power supply system according to claim 1, it is characterised in that：The DC/AC control modules Including full bridge inverter, filter circuit, grid-connected/off-network switch protecting circuit, Current Feedback Control Circuit and Voltage Feedback control Circuit processed；The full bridge inverter is made up of four igbt transistors；When the emergency power supply system carries out grid-connected Working mould During formula, the grid-connected/off-network switch protecting circuit connection Current Feedback Control Circuit, when carrying out off-network independent working mode, institute State grid-connected/off-network switch protecting circuit connection Voltage Feedback control circuit.
- 6. solar power generation emergency power supply system according to claim 1 or 2, it is characterised in that：The photovoltaic controller (104) light-operated switch and time switch are also included.
- 7. solar power generation emergency power supply system according to claim 1 or 2, it is characterised in that：The photovoltaic controller (104) it is connected with the display screen for display system working condition.
- 8. solar power generation emergency power supply system according to claim 1, it is characterised in that：The combining inverter (202) ATmega64 chips are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720531116.7U CN206807027U (en) | 2017-05-15 | 2017-05-15 | Solar power generation emergency power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720531116.7U CN206807027U (en) | 2017-05-15 | 2017-05-15 | Solar power generation emergency power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807027U true CN206807027U (en) | 2017-12-26 |
Family
ID=60739624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720531116.7U Expired - Fee Related CN206807027U (en) | 2017-05-15 | 2017-05-15 | Solar power generation emergency power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807027U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591945A (en) * | 2018-06-21 | 2018-09-28 | 浙江嘉朔新能源发展有限公司 | Expressway solar energy channel |
| CN112721651A (en) * | 2020-12-29 | 2021-04-30 | 江苏师范大学 | Solar electric automobile intelligent control system based on PWM control |
| CN113572267A (en) * | 2021-07-21 | 2021-10-29 | 深圳市羲和未来科技有限公司 | Energy storage device |
-
2017
- 2017-05-15 CN CN201720531116.7U patent/CN206807027U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591945A (en) * | 2018-06-21 | 2018-09-28 | 浙江嘉朔新能源发展有限公司 | Expressway solar energy channel |
| CN112721651A (en) * | 2020-12-29 | 2021-04-30 | 江苏师范大学 | Solar electric automobile intelligent control system based on PWM control |
| CN113572267A (en) * | 2021-07-21 | 2021-10-29 | 深圳市羲和未来科技有限公司 | Energy storage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20190515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |