WO2015169131A1 - 一种逆变器及光伏发电系统 - Google Patents

一种逆变器及光伏发电系统 Download PDF

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WO2015169131A1
WO2015169131A1 PCT/CN2015/075196 CN2015075196W WO2015169131A1 WO 2015169131 A1 WO2015169131 A1 WO 2015169131A1 CN 2015075196 W CN2015075196 W CN 2015075196W WO 2015169131 A1 WO2015169131 A1 WO 2015169131A1
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power
inverter
photovoltaic
energy storage
output
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PCT/CN2015/075196
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English (en)
French (fr)
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曹伟
余勇
刘高文
周旭东
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阳光电源股份有限公司
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Priority to US15/308,719 priority Critical patent/US20170187323A1/en
Priority to JP2016566796A priority patent/JP6349602B2/ja
Priority to EP15789022.9A priority patent/EP3142209A4/en
Publication of WO2015169131A1 publication Critical patent/WO2015169131A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/20—Systems characterised by their energy storage means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
    • 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
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

Definitions

  • the present invention provides an inverter and a photovoltaic power generation system to solve the problem that the photovoltaic power generation system cannot generate power at maximum power in the prior art.
  • the inverter further includes: a communication unit connected between the AC power grid and the controller, configured to receive information about the AC power grid limiting power, and forward the information to the controller.
  • a communication unit connected between the AC power grid and the controller, configured to receive information about the AC power grid limiting power, and forward the information to the controller.
  • the inverter further includes: a voltage current detecting circuit connected between the inverter bridge and the energy storage interface, configured to detect a direct current and a voltage input to the inverter bridge, and output a detection signal to The inverter bridge causes the inverter to calculate and output the AC grid limiting power and send it to the controller.
  • a voltage current detecting circuit connected between the inverter bridge and the energy storage interface, configured to detect a direct current and a voltage input to the inverter bridge, and output a detection signal to The inverter bridge causes the inverter to calculate and output the AC grid limiting power and send it to the controller.
  • Inverter bridge 102 connected to DC current sensor 101 and battery panel 200;

Abstract

一种逆变器（100）及光伏发电系统，通过设置储能接口（103），使得电池板（200）输出的电能在光伏限发时能够将多余的直流电能通过储能接口（103）输出，而在光伏发电功率低时可以经由所述储能接口（103）接收存储的直流电能，进而使所述电池板（200）输出的电能不会浪费掉，光伏发电系统能够以其最大的功率进行发电，而不会造成光伏发电收益的降低。

Description

一种逆变器及光伏发电系统
本申请要求于2014年5月8日提交中国专利局、申请号为201410193722.3、发明名称为“一种逆变器及光伏发电系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及光伏发电技术领域，尤其涉及一种逆变器及光伏发电系统。
背景技术
目前的光伏发电系统，由于电网容量限制或一些政策约束，导致发电功率受到限制，即光伏发电系统无法进行最大功率发电；在这种情况下，当前的多数光伏发电系统采用的是限功率的方式，这样就使得光伏弃光，光伏发电系统无法以最大功率发电，降低了光伏发电的收益。
发明内容
有鉴于此，本发明提供了一种逆变器及光伏发电系统，以解决现有技术中光伏发电系统无法以最大功率发电的问题。
一种逆变器，应用于光伏发电系统，连接于电池板与交流电网之间，所述逆变器包括：储能接口。
优选的，包括：向所述储能接口发送控制信号，以用于控制所述储能接口在光伏限发时输出多余直流电能，并在光伏发电功率低时接收并转发存储的直流电能的控制器。
优选的，包括：与所述电池板输出端相连的直流电流传感器，用于检测所述电池板输出的直流电流；并依据所述直流电流生成直流电流检测信号；
与所述交流电网、直流电流传感器及电池板相连的逆变桥，用于接收所述直流电流传感器输出的所述直流电流检测信号及所述电池板输出的直流电压，计算并输出所述电池板输出的总功率；
其中所述控制器与所述逆变桥相连，用于接收所述逆变桥发送的总功率，并接收所述交流电网的限发功率的信息，计算所述总功率和限发功率两者的差值，并依据所述差值生成并输出控制信号至所述储能接口，以使得所述储能接口依据所述控制信号，在光伏限发时输出所述电池板的多余直流电能，并在光伏发电功率低时接收并转发存储的直流电能，进而使得所述逆变桥在光伏限发 时接收所述电池板限发的直流电能，并在光伏发电功率低时接收所述储能接口转发的所述存储的直流电能，并将接收的直流电能转换为交流电能输出至所述交流电网；
所述储能接口设置于所述直流电流传感器与逆变桥之间。
优选的，还包括：连接于所述交流电网及控制器之间的通信单元，用于接收所述交流电网所需发电功率的信息，并转发至所述控制器。
优选的，所述通信单元通过光纤或无线方式与所述交流电网相连。
一种光伏发电系统，包括：电池板及上述任一所述的逆变器。
优选的，还包括：
与所述储能接口及控制器相连的储能装置，用于接收所述控制信号，在光伏限发时将所述电池板输出的多余直流电能进行存储，并在光伏发电功率低时输出所述存储的直流电能。
优选的，所述储能装置包括：
蓄电池；
连接于所述蓄电池与储能接口之间、并与所述控制器相连的双向DCDC控制器，用于接收所述控制信号，控制所述蓄电池在光伏限发时存储所述电池板输出的多余直流电能，并在光伏发电功率低时输出所述存储的直流电能。
优选的，所述逆变器还包括：连接于所述交流电网及控制器之间的通信单元，用于接收所述交流电网限发功率的信息，并转发至所述控制器。
优选的，所述通信单元通过光纤或者无线方式与所述交流电网相连。
优选的，所述逆变器还包括：连接于所述逆变桥与储能接口之间的电压电流检测回路，用于检测输入所述逆变桥的直流电流及电压，并输出检测信号至所述逆变桥，使所述逆变器计算并输出所述交流电网限发功率并发送至所述控制器。
从上述的技术方案可以看出，本发明公开的逆变器，通过设置储能接口，使得电池板输出的电能在光伏限发时能够将多余的直流电能通过储能接口输出，而在光伏发电功率低时可以经由所述储能接口接收存储的直流电能，进而使所述电池板输出的电能不会浪费掉，光伏发电系统能够以其最大的功率进行发电，而不会造成光伏发电收益的降低。
附图说明
图1为本发明实施例公开的光伏发电系统结构示意图；
图2为本发明实施例公开的光伏发电系统输出电能与限发电能关系的示意图；
图3为本发明另一实施例公开的光伏发电系统结构示意图；
图4为本发明另一实施例公开的光伏发电系统结构示意图；
图5为本发明另一实施例公开的光伏发电系统结构示意图；
图6为本发明另一实施例公开的光伏发电系统结构示意图；
图7为本发明另一实施例公开的光伏发电系统结构示意图。
具体实施方式
为了进一步了解本发明，下面结合实施例对本发明优选实施方案进行描述，但是应当理解，这些描述只是为进一步说明本发明的特征和优点，而不是对本发明权利要求的限制。
本发明提供了一种逆变器，应用于光伏发电系统，以解决现有技术中光伏发电系统无法以最大功率发电的问题。
具体的，所述逆变器包括：储能接口。
具体的工作原理为：
通过设置储能接口，使得电池板输出的电能在光伏限发时能够将多余的直流电能通过储能接口输出，而在光伏发电功率低时可以经由所述储能接口接收存储的直流电能，进而使所述电池板输出的电能不会浪费掉。
本实施例公开的所述逆变器，使光伏发电系统能够以其最大的功率进行发电，而不会造成光伏发电收益的降低。
优选的，如图1所示，逆变器100连接于电池板200与交流电网300之间，逆变器100包括：
与电池板200输出端相连的直流电流传感器101；
与直流电流传感器101及电池板200相连的逆变桥102；
设置于直流电流传感器101与逆变桥102之间的储能接口103；
与逆变桥102相连的控制器104。
具体的工作原理为：
直流电流传感器101检测电池板200输出的直流电流；逆变桥102接收直流电流传感器101输出的直流电流检测信号及电池板200输出的直流电压，计算并输出电池板200输出的总功率P1，使逆变桥102保留其最大功率点跟踪控制功能；控制器104接收电池板200输出的总功率P1及交流电网300限发功率P2的信息，计算两者的差值，可以得知此时所述光伏发电系统处于何种状态，如图2所示，然后输出控制信号，使得储能接口103在光伏限发时输出电池板200的多余直流电能，并在光伏发电功率低时接收并转发存储的直流电能；使得逆变桥102在光伏限发时接收电池板200限发的直流电能，并在光伏发电功率低时接收储能接口103转发的所述存储的直流电能，并将接收的直流电能转换为交流电能输出至交流电网300。
本实施例提供的逆变器100，通过上述过程，使电池板200输出的电能在光伏限发时能够将多余的直流电能通过储能接口103输出，而在光伏发电功率低时逆变器102可以接收储能接口103转发的所述存储的直流电能，进而使得电池板200输出的电能不会浪费掉，所述光伏发电系统能够以其最大的功率进行发电，而不会造成光伏发电收益的降低。同时，将储能接口103设置于直流电流传感器101与逆变桥102之间，使逆变桥102可以保留其最大功率点跟踪控制功能，不需要对其控制算法进行改变。
优选的，如图3所示，逆变器100还包括：与交流电网300及控制器104相连的通信单元105。
通信单元105可以接收交流电网300限发功率的信息，并转发至控制器104。
优选的，通信单元105通过光纤或者无线方式与交流电网300相连。
在具体的实施环境中，通信单元105与交流电网300之间的通信方式，可以采用光纤等有线方式进行通信，也可以以无线方式进行通信，根据具体的应用场景进行选用，此处不做限定。
本发明另一实施例还提供了一种光伏发电系统，如图1所示，包括：电池板200及连接于电池板200与交流电网300之间的逆变器100；其中，逆变器100包括：
与电池板200输出端相连的直流电流传感器101；
与直流电流传感器101及电池板200相连的逆变桥102；
设置于直流电流传感器101与逆变桥102之间的储能接口103；
与逆变桥102相连的控制器104。
具体的工作原理与上述实施例相同，此处不再赘述。
优选的，如图4所示，所述光伏发电系统还包括：与储能接口103及控制器104相连的储能装置400。
储能装置400接收所述控制信号，根据控制器104的控制，在光伏限发时接收电池板200输出的多余直流电能，并在光伏发电功率低时输出所述存储的直流电能。
优选的，如图5所示，储能装置400包括：
蓄电池401；
连接于蓄电池401与储能接口103之间、并与控制器104相连的双向DCDC控制器402。
双向DCDC控制器402接收所述控制信号，控制蓄电池401在光伏限发时存储电池板200输出的多余直流电能，并在光伏发电功率低时输出所述存储的直流电能。
优选的，如图6所示，逆变器100还包括：与交流电网300及控制器104相连的通信单元105。
通信单元105可以接收交流电网300限发功率的信息，并转发至控制器104。
优选的，通信单元105通过光纤或者无线方式与交流电网300相连。
在具体的实施环境中，通信单元105与交流电网300之间的通信方式，可以采用光纤等有线方式进行通信，也可以以无线方式进行通信，根据具体的应用场景进行选用，此处不做限定。
或者，如图7所示，逆变器100还包括：连接于逆变桥102与储能接口103之间的电压电流检测回路106。
电压电流检测回路106检测输入逆变桥102的直流电流及电压，并输出检测信号至逆变桥102，使逆变器102计算并输出交流电网300限发功率并发送至控制器104，再由控制器104配合电池板200输出的总功率做差值，根据所述差值控制储能装置400的工作状态。
在具体的实际应用环境中，逆变器100可以如图6所示，由通信单元105得到交流电网300限发功率的信息，也可以如图7所示，由电压电流检测回路106的检测及逆变桥102的计算从而得到交流电网300限发功率的信息，其具体的实现形式可以有多种方式实现，此处并不做具体限定，可以根据具体的实际情况进行选用。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (11)

  1. 一种逆变器，应用于光伏发电系统，其特征在于，连接于电池板与交流电网之间，所述逆变器包括：储能接口。
  2. 根据权利要求1所述的逆变器，其特征在于，包括：向所述储能接口发送控制信号，以用于控制所述储能接口在光伏限发时输出多余直流电能，并在光伏发电功率低时接收并转发存储的直流电能的控制器。
  3. 根据权利要求2所述的逆变器，其特征在于，包括：与所述电池板输出端相连的直流电流传感器，用于检测所述电池板输出的直流电流；并依据所述直流电流生成直流电流检测信号；
    与所述交流电网、直流电流传感器及电池板相连的逆变桥，用于接收所述直流电流传感器输出的所述直流电流检测信号及所述电池板输出的直流电压，计算并输出所述电池板输出的总功率；
    其中所述控制器与所述逆变桥相连，用于接收所述逆变桥发送的总功率，并接收所述交流电网的限发功率的信息，计算所述总功率和限发功率两者的差值，并依据所述差值生成并输出控制信号至所述储能接口，以使得所述储能接口依据所述控制信号，在光伏限发时输出所述电池板的多余直流电能，并在光伏发电功率低时接收并转发存储的直流电能，进而使得所述逆变桥在光伏限发时接收所述电池板限发的直流电能，并在光伏发电功率低时接收所述储能接口转发的所述存储的直流电能，并将接收的直流电能转换为交流电能输出至所述交流电网；
    所述储能接口设置于所述直流电流传感器与逆变桥之间。
  4. 根据权利要求3所述的逆变器，其特征在于，还包括：连接于所述交流电网及控制器之间的通信单元，用于接收所述交流电网所需发电功率的信息，并转发至所述控制器。
  5. 根据权利要求4所述的逆变器，其特征在于，所述通信单元通过光纤或无线方式与所述交流电网相连。
  6. 一种光伏发电系统，其特征在于，包括：电池板及权利要求1至5任一所述的逆变器。
  7. 根据权利要求6所述的光伏发电系统，其特征在于，还包括：
    与所述储能接口及控制器相连的储能装置，用于接收所述控制信号，在光伏限发时将所述电池板输出的多余直流电能进行存储，并在光伏发电功率低时输出所述存储的直流电能。
  8. 根据权利要求6所述的光伏发电系统，其特征在于，所述储能装置包括：
    蓄电池；
    连接于所述蓄电池与储能接口之间、并与所述控制器相连的双向DCDC控制器，用于接收所述控制信号，控制所述蓄电池在光伏限发时存储所述电池板输出的多余直流电能，并在光伏发电功率低时输出所述存储的直流电能。
  9. 根据权利要求7所述的光伏发电系统，其特征在于，所述逆变器还包括：连接于所述交流电网及控制器之间的通信单元，用于接收所述交流电网限发功率的信息，并转发至所述控制器。
  10. 根据权利要求9所述的光伏发电系统，其特征在于，所述通信单元通过光纤或者无线方式与所述交流电网相连。
  11. 根据权利要求7所述的光伏发电系统，其特征在于，所述逆变器还包括：连接于所述逆变桥与储能接口之间的电压电流检测回路，用于检测输入所述逆变桥的直流电流及电压，并输出检测信号至所述逆变桥，使所述逆变器计算并输出所述交流电网限发功率并发送至所述控制器。
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106655991A (zh) * 2016-11-14 2017-05-10 上海振华重工(集团)股份有限公司 一种岸桥太阳能供电系统
CN106760644A (zh) * 2016-10-25 2017-05-31 济南大学 一种利用新能源的公交站
EP3306772A1 (en) 2016-10-10 2018-04-11 Philips Lighting Holding B.V. A method and system for optimally distributing power between a battery and a power grid
KR20200056956A (ko) * 2017-05-15 2020-05-25 다이너파워 컴퍼니 엘엘씨 과잉 전력을 추출하기 위한 방법 및 시스템

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944492A (zh) * 2014-05-08 2014-07-23 阳光电源股份有限公司 一种逆变器及光伏发电系统
CN105490320B (zh) * 2014-09-19 2018-12-21 比亚迪股份有限公司 光伏电站储能方法和系统
CN104283237A (zh) * 2014-10-29 2015-01-14 阳光电源股份有限公司 光伏发电系统、风能发电系统及其控制方法
CN107872070A (zh) * 2016-09-27 2018-04-03 比亚迪股份有限公司 光伏微网系统及其控制方法
CN108258810A (zh) * 2016-12-28 2018-07-06 比亚迪股份有限公司 直流光伏储能系统及其控制方法
CN106786804B (zh) * 2017-03-24 2020-03-24 阳光电源股份有限公司 光储混合并网发电系统输出功率调控方法和能量管理系统
CN107104498A (zh) * 2017-04-26 2017-08-29 安徽机电职业技术学院 光伏发电系统
CN108233420A (zh) * 2018-02-01 2018-06-29 中车株洲电力机车有限公司 一种光伏太阳能系统及其控制方法
CN108462211A (zh) * 2018-05-10 2018-08-28 北京科诺伟业科技股份有限公司 一种提高分布式光伏系统自发自用率的方法
CN109038780A (zh) * 2018-06-29 2018-12-18 华为技术有限公司 一种光伏系统
CN109149770A (zh) * 2018-09-10 2019-01-04 浙江电腾云光伏科技有限公司 一种大范围分散式光伏发电站的模块化管理平台
US20220263311A1 (en) * 2019-02-12 2022-08-18 Elexsys Ip Pty Ltd System and Method for Managing Power
CN112994055B (zh) * 2019-12-02 2023-09-05 比亚迪股份有限公司 存储介质、光伏发电系统及其控制方法
CN113644695B (zh) * 2021-08-04 2023-12-12 艾伏新能源科技(上海)股份有限公司 一种针对光伏并网系统的快速限功率控制系统
CN114447983A (zh) * 2022-02-10 2022-05-06 昱能科技股份有限公司 一种分布式光伏能源系统
CN114865990A (zh) * 2022-05-10 2022-08-05 深圳以弗数字科技有限公司 一种智能薄膜发电系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101286655A (zh) * 2008-05-22 2008-10-15 中国科学院电工研究所 基于超级电容器储能的风力发电、光伏发电互补供电系统
CN101345500A (zh) * 2008-05-16 2009-01-14 广东志成冠军集团有限公司 具有并网发电、独立发电及ups功能的光伏发电系统
CN101826741A (zh) * 2010-03-11 2010-09-08 哈尔滨工业大学深圳研究生院 新型高效率太阳能电池充电系统及控制方法
CN102195525A (zh) * 2011-05-19 2011-09-21 南京航空航天大学 一种光伏建筑供电系统
CN102510086A (zh) * 2011-11-18 2012-06-20 中电普瑞科技有限公司 多象限光伏储能、逆变一体化装置
CN102738885A (zh) * 2012-07-10 2012-10-17 上海市电力公司 一种蓄电池储能和光伏发电混合系统
CN103944492A (zh) * 2014-05-08 2014-07-23 阳光电源股份有限公司 一种逆变器及光伏发电系统

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001218368A (ja) * 2000-02-04 2001-08-10 Hitachi Ltd 電力変換装置及び太陽光発電システム
JP3880471B2 (ja) * 2002-07-09 2007-02-14 大阪瓦斯株式会社 発電計画方法
US6966184B2 (en) * 2002-11-25 2005-11-22 Canon Kabushiki Kaisha Photovoltaic power generating apparatus, method of producing same and photovoltaic power generating system
JP2005312138A (ja) * 2004-04-19 2005-11-04 Canon Inc 電力制御装置、発電システム及び電力系統システム
US7274975B2 (en) * 2005-06-06 2007-09-25 Gridpoint, Inc. Optimized energy management system
WO2009155445A2 (en) * 2008-06-18 2009-12-23 Premium Power Corporation Integrated renewable energy generation and storage systems and associated methods
WO2010013783A1 (ja) * 2008-08-01 2010-02-04 パナソニック電工株式会社 配電システム
US8053929B2 (en) * 2008-12-03 2011-11-08 Solar Power Technologies, Inc. Solar power array with maximized panel power extraction
EP2396513A4 (en) * 2009-02-13 2018-03-07 First Solar, Inc Photovoltaic power plant output
CN101621205B (zh) * 2009-08-13 2012-06-27 阳光电源股份有限公司 一种用于交流侧包含变压器的光伏并网逆变器并网运行方法
EP2325970A3 (en) * 2009-11-19 2015-01-21 Samsung SDI Co., Ltd. Energy management system and grid-connected energy storage system including the energy management system
KR101084214B1 (ko) * 2009-12-03 2011-11-18 삼성에스디아이 주식회사 계통 연계형 전력 저장 시스템 및 전력 저장 시스템 제어 방법
KR101084215B1 (ko) * 2009-12-16 2011-11-17 삼성에스디아이 주식회사 에너지 저장 시스템 및 이의 제어 방법
JPWO2011078215A1 (ja) * 2009-12-22 2013-05-09 三洋電機株式会社 電力供給方法、コンピュータ読み取り可能な記録媒体および発電システム
WO2011078151A1 (ja) * 2009-12-24 2011-06-30 三洋電機株式会社 電力供給方法、コンピュータ読み取り可能な記録媒体および発電システム
US8866334B2 (en) * 2010-03-02 2014-10-21 Icr Turbine Engine Corporation Dispatchable power from a renewable energy facility
WO2011122681A1 (ja) * 2010-03-30 2011-10-06 三洋電機株式会社 系統安定化システム、電力供給システム、集中管理装置の制御方法および集中管理装置のプログラム
US9379549B2 (en) * 2010-04-26 2016-06-28 Nec Corporation Electric power control system and method
KR20130138611A (ko) * 2012-06-11 2013-12-19 삼성에스디아이 주식회사 에너지 저장 시스템
JP6026226B2 (ja) * 2012-10-30 2016-11-16 株式会社日立情報通信エンジニアリング 蓄電システム及び電源システム
CN103178547B (zh) * 2013-04-10 2015-09-16 卧龙电气集团股份有限公司 一种带双向逆变器的微网系统及其工作方法
CN203456933U (zh) * 2013-08-23 2014-02-26 西安科技大学 太阳能光伏发电控制器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101345500A (zh) * 2008-05-16 2009-01-14 广东志成冠军集团有限公司 具有并网发电、独立发电及ups功能的光伏发电系统
CN101286655A (zh) * 2008-05-22 2008-10-15 中国科学院电工研究所 基于超级电容器储能的风力发电、光伏发电互补供电系统
CN101826741A (zh) * 2010-03-11 2010-09-08 哈尔滨工业大学深圳研究生院 新型高效率太阳能电池充电系统及控制方法
CN102195525A (zh) * 2011-05-19 2011-09-21 南京航空航天大学 一种光伏建筑供电系统
CN102510086A (zh) * 2011-11-18 2012-06-20 中电普瑞科技有限公司 多象限光伏储能、逆变一体化装置
CN102738885A (zh) * 2012-07-10 2012-10-17 上海市电力公司 一种蓄电池储能和光伏发电混合系统
CN103944492A (zh) * 2014-05-08 2014-07-23 阳光电源股份有限公司 一种逆变器及光伏发电系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3142209A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3306772A1 (en) 2016-10-10 2018-04-11 Philips Lighting Holding B.V. A method and system for optimally distributing power between a battery and a power grid
WO2018069221A1 (en) 2016-10-10 2018-04-19 Philips Lighting Holding B.V. A method and system for optimally distributing power between a battery and a power grid
CN106760644A (zh) * 2016-10-25 2017-05-31 济南大学 一种利用新能源的公交站
CN106655991A (zh) * 2016-11-14 2017-05-10 上海振华重工(集团)股份有限公司 一种岸桥太阳能供电系统
CN106655991B (zh) * 2016-11-14 2019-03-01 上海振华重工(集团)股份有限公司 一种岸桥太阳能供电系统
KR20200056956A (ko) * 2017-05-15 2020-05-25 다이너파워 컴퍼니 엘엘씨 과잉 전력을 추출하기 위한 방법 및 시스템
JP2020520228A (ja) * 2017-05-15 2020-07-02 ダイナパワー カンパニー エルエルシー 余剰電力の抽出方法及びシステム
JP7248593B2 (ja) 2017-05-15 2023-03-29 ダイナパワー カンパニー エルエルシー 余剰電力の抽出方法及びシステム
KR102610010B1 (ko) * 2017-05-15 2023-12-05 다이너파워 컴퍼니 엘엘씨 과잉 전력을 추출하기 위한 방법 및 시스템
US11936187B2 (en) 2017-05-15 2024-03-19 Dynapower Company Llc Method and system for extracting excess power

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EP3142209A4 (en) 2017-12-20
CN104779645B (zh) 2018-10-02
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CN104779645A (zh) 2015-07-15

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