CN203562825U - An off-grid solar energy storage complementary power supply system - Google Patents

An off-grid solar energy storage complementary power supply system Download PDF

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Publication number
CN203562825U
CN203562825U CN201320507910.XU CN201320507910U CN203562825U CN 203562825 U CN203562825 U CN 203562825U CN 201320507910 U CN201320507910 U CN 201320507910U CN 203562825 U CN203562825 U CN 203562825U
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CN
China
Prior art keywords
power supply
full
bridge inverter
electric loading
grid solar
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
Application number
CN201320507910.XU
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Chinese (zh)
Inventor
李晟
邱宝象
李霖
资小林
林光钟
涂小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG WANXIANG SOLAR CO Ltd
Wanxiang Group Corp
Original Assignee
ZHEJIANG WANXIANG SOLAR CO Ltd
Wanxiang Group Corp
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Priority to CN201320507910.XU priority Critical patent/CN203562825U/en
Application granted granted Critical
Publication of CN203562825U publication Critical patent/CN203562825U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The utility model discloses an off-grid solar energy storage complementary power supply system and belongs to off-grid solar power generating and supplying technical field. The off-grid solar energy storage complementary power supply system can be effectively controlled and managed according to various operating conditions existing in off-grid solar power generation in order to achieve a purpose that off-grid solar energy storage complementary power supply provides stable power for a household electrical appliance load. The off-grid solar energy storage complementary power supply system comprises a photovoltaic assembly, a unidirectional DC converter, a common DC bus, a bidirectional DC current transformer, a storage battery, a full-bridge inverter, and a household electrical appliance load. The photovoltaic assembly is connected with the unidirectional DC converter. The unidirectional DC converter is connected with the bidirectional DC current transformer, the full-bridge inverter, and the common DC bus. The storage battery is connected with the bidirectional DC current transformer. The household electrical appliance load is connected with the full-bridge inverter. The off-grid solar energy storage complementary power supply system is mainly used in off-grid solar power generating and supplying technology.

Description

A kind of from net light storage complementary power supply system
Technical field
The utility model relates to from net solar power generation power supply technique field, relates in particular to a kind of from net light storage complementary power supply system.
Background technology
Solar energy is with its clean environment firendly, and contain the advantage such as abundant and progressively obtained development and utilization, be the important directions growing up nearest more than ten years of new energy field.
Because solar energy is generally all connected with storage battery, to unnecessary electricity is stored away, when the inadequate family of the electricity electric loading of sending at solar energy is used, storage battery provides power supply just to an electric loading.For the user that power supply is provided to family's electric loading with solar power generation completely from net type, the impact that is subject to weather due to solar power generation is larger, the electricity that causes solar power generation to send in each period can change to some extent, this makes to exist various working perhaps from net solar power generation, the electricity that every kind of operating mode is exported is different, so must, to carrying out control and management from net light storage complementary power supply system, can provide stable power-supplying for family's electric loading so that realization is stored up complementary power supply from net light.
China Patent Publication No. CNl02684227A; open day on September 19th, 2012; a kind of community in urban areas photo-voltaic power generation station is disclosed; comprise roof photovoltaic generation unit, power fluctuation peak regulation energy-storage system, photovoltaic load and dispatching control center; roof photovoltaic generation unit is arranged on only civil construction roof, concentrates and lays photovoltaic panel, confluxes and inversion assembly in roof photovoltaic generation unit; Peak regulation energy-storage system and dispatching control center are arranged in community's photo-voltaic power generation station station, and roof photovoltaic generation unit, power fluctuation peak regulation energy-storage system and photovoltaic load are connected in dispatching control center by power circuit and communication line.Weak point is, this photo-voltaic power generation station is networking generating, but can not be to carrying out effective control and management from the complementary power supply of net light storage.
Utility model content
The utility model is can not be to carry out the deficiency of effective control and management from the complementary power supply of net light storage in order to solve existing photovoltaic generation, the various working perhaps that provides a kind of basis to exist from net solar power generation, can, to controling effectively and manage from net light storage complementary power supply system, so that storing up complementary power supply from net light, realization can provide the one of stable power-supplying from net light storage complementary power supply system for family's electric loading.
To achieve these goals, the utility model is by the following technical solutions:
A kind of from net light storage complementary power supply system, comprise: photovoltaic module, Unidirectional direct-current converter, common DC bus, bidirectional, dc current transformer, storage battery, full-bridge inverter and family's electric loading, described photovoltaic module is connected with described Unidirectional direct-current converter, described Unidirectional direct-current converter connects, described bidirectional, dc current transformer is connected with described common DC bus respectively with described full-bridge inverter, described storage battery is connected with described bidirectional, dc current transformer, and described electric loading is connected with described full-bridge inverter.
This programme is according to actual condition difference, and Unidirectional direct-current converter can be realized the MPPT control algolithm of photovoltaic module or control the voltage constant of common DC bus; The bidirectional, dc current transformer of storage battery one side can be realized accumulator cell charging and discharging control or maintain the voltage constant of common DC bus.For the photovoltaic module in this system and two energy generating apparatus of storage battery, this programme provide a kind of energy management from net light storage complementary power supply system, its core is according to the operating state of photovoltaic module and storage battery, and the voltage of common DC bus carrys out the Energy distribution in judgement system, can judge in time system present situation.While can realize automatically the full-bridge inverter in system and family's electric loading, quick, accurate, reasonably operating mode is switched, and reaches rationally, manages efficiently the energy flow of photovoltaic module, storage battery, family's electric loading, a realization electric loading stable power-supplying.
As preferably, on described common DC bus, be parallel with the capacitor that capacity is larger.Capacitor can guarantee the voltage constant on common DC bus to greatest extent, to provide more stable power supply for family's electric loading.
As preferably, also comprise load diverter switch, microcontroller and timer, described timer, described load diverter switch and described full-bridge inverter are connected with described microcontroller respectively, and described full-bridge inverter is connected with load diverter switch respectively with described electric loading.
Microcontroller carries out monitoring management to the output voltage of full-bridge inverter, and microcontroller also encircles power-off switching to load diverter switch.When the output voltage of full-bridge inverter is during lower than predetermined value, microcontroller sends power-off switching command just to load diverter switch, and the power supply of the family electric loading being connected with respective load diverter switch is with regard to disconnection.So just reduced the load of full-bridge inverter output.The dump of not serious family's electric loading, only the family's electric loading that must power is powered, so just guaranteed that family's electric loading of necessary power supply can obtain reliable and stable power supply.When the output voltage of full-bridge inverter is during higher than predetermined value, microcontroller sends conducting switching command just to load diverter switch, and the power supply of the family's electric loading being connected with respective load diverter switch is with regard to conducting.So just guarantee the stability of full-bridge inverter output end voltage, and then provide stable power supply for connected family's electric loading.If can interval man's electric loading of power supply have some, that controller just carries out timing by timer to family's electric loading of power-off, when timing time one arrives, controller just sends power on/off instruction to the load diverter switch of corresponding electric loading, allow can interval man's electric loading of power supply can rationally work, can guarantee that like this family's electric loading of connected conducting can both obtain reliable and stable power supply.
The utility model can reach following effect:
1, this programme, according to actual condition difference, to controling effectively and manage from the operating mode output of net light storage complementary power supply system, can provide more stable power supply for family's electric loading so that realization is stored up complementary power supply from net light.
2, this programme photovoltaic generation is basis, a collection generating, energy storage are provided, be powered at one from net type home energy source system.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory syndeton schematic diagram of the utility model example 1.
Fig. 2 is a kind of circuit theory syndeton schematic diagram of the utility model example 2.
In figure: photovoltaic module 1, Unidirectional direct-current converter 2, common DC bus 3, bidirectional, dc current transformer 4, storage battery 5, full-bridge inverter 6, family's electric loading 7, load diverter switch 8, microcontroller 9, timer 10.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Example 1, a kind of from net light storage complementary power supply system, shown in Figure 1, comprise: photovoltaic module 1, Unidirectional direct-current converter 2, common DC bus 3, bidirectional, dc current transformer 4, storage battery 5, full-bridge inverter 6 and family's electric loading 7, photovoltaic module is connected with Unidirectional direct-current converter, Unidirectional direct-current converter connects, bidirectional, dc current transformer is connected with common DC bus respectively with full-bridge inverter, and storage battery is connected with bidirectional, dc current transformer, and family's electric loading is connected with full-bridge inverter.And on common DC bus, be parallel with the electric capacity that capacity is larger.
During use, according to actual condition difference, Unidirectional direct-current converter can be realized the MPPT control algolithm of photovoltaic module or control the voltage constant of common DC bus; The bidirectional, dc current transformer of storage battery one side can be realized accumulator cell charging and discharging control or maintain the voltage constant of common DC bus.For the photovoltaic module in this system and two energy generating apparatus of storage battery.The energy management of this example, its core from the complementary power supply of net light storage is according to the operating state of photovoltaic module and storage battery, and the voltage of common DC bus carrys out the Energy distribution in judgement system, can judge in time system present situation.While can realize automatically the full-bridge inverter in system and family's electric loading, quick, accurate, reasonably operating mode is switched, and reaches rationally, manages efficiently the energy flow of photovoltaic module, storage battery, family's electric loading, a realization electric loading stable power-supplying.Capacitor can guarantee the voltage constant on common DC bus to greatest extent, to provide more stable power supply for family's electric loading.
Example 2, as shown in Figure 2, example 2 is on the basis of example 1, load diverter switch 8, microcontroller 9 and timer 10 have been added again, and timer, load diverter switch and full-bridge inverter are connected with microcontroller respectively, full-bridge inverter is connected with load diverter switch respectively with an electric loading.
During use, microcontroller carries out monitoring management to the output voltage of full-bridge inverter, and microcontroller also encircles power-off switching to load diverter switch.When the output voltage of full-bridge inverter is during lower than predetermined value, microcontroller sends power-off switching command just to load diverter switch, and the power supply of the family electric loading being connected with respective load diverter switch is with regard to disconnection.So just reduced the load of full-bridge inverter output.The dump of not serious family's electric loading, only the family's electric loading that must power is powered, so just guaranteed that family's electric loading of necessary power supply can obtain reliable and stable power supply.When the output voltage of full-bridge inverter is during higher than predetermined value, microcontroller sends conducting switching command just to load diverter switch, and the power supply of the family's electric loading being connected with respective load diverter switch is with regard to conducting.So just guarantee the stability of full-bridge inverter output end voltage, and then provide stable power supply for connected family's electric loading.If can interval man's electric loading of power supply have some, that controller just carries out timing by timer to family's electric loading of power-off, when timing time one arrives, controller just sends power on/off instruction to the load diverter switch of corresponding electric loading, allow can interval man's electric loading of power supply can rationally work, can guarantee that like this family's electric loading of connected conducting can both obtain reliable and stable power supply.
Described by reference to the accompanying drawings execution mode of the present utility model above, but not limited by above-described embodiment while realizing, those of ordinary skills can make a variety of changes within the scope of the appended claims or revise.

Claims (3)

1. one kind is stored up complementary power supply system from net light, comprise: photovoltaic module (1), Unidirectional direct-current converter (2), common DC bus (3), bidirectional, dc current transformer (4), storage battery (5), full-bridge inverter (6) and family's electric loading (7), it is characterized in that, described photovoltaic module is connected with described Unidirectional direct-current converter, described Unidirectional direct-current converter connects, described bidirectional, dc current transformer is connected with described common DC bus respectively with described full-bridge inverter, described storage battery is connected with described bidirectional, dc current transformer, described electric loading is connected with described full-bridge inverter.
2. one according to claim 1, from net light storage complementary power supply system, is characterized in that, at described common DC bus, is parallel with capacitor.
3. one according to claim 1 and 2 is from net light storage complementary power supply system, it is characterized in that, also comprise load diverter switch (8), microcontroller (9) and timer (10), described timer, described load diverter switch and described full-bridge inverter are connected with described microcontroller respectively, and described full-bridge inverter is connected with load diverter switch respectively with described electric loading.
CN201320507910.XU 2013-08-20 2013-08-20 An off-grid solar energy storage complementary power supply system Expired - Fee Related CN203562825U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104184396A (en) * 2014-08-13 2014-12-03 上海电机学院 Photovoltaic power supply system and control method thereof
CN104979820A (en) * 2015-07-09 2015-10-14 深圳市行健自动化股份有限公司 Stable control method for DC bus of new energy island power station

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104184396A (en) * 2014-08-13 2014-12-03 上海电机学院 Photovoltaic power supply system and control method thereof
CN104979820A (en) * 2015-07-09 2015-10-14 深圳市行健自动化股份有限公司 Stable control method for DC bus of new energy island power station
CN104979820B (en) * 2015-07-09 2017-09-26 深圳市行健自动化股份有限公司 New energy isolated island electric station DC bus stable control method

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20140423

Termination date: 20170820