CN101902145B - 太阳能逆变器和控制方法 - Google Patents

太阳能逆变器和控制方法 Download PDF

Info

Publication number
CN101902145B
CN101902145B CN201010196647.8A CN201010196647A CN101902145B CN 101902145 B CN101902145 B CN 101902145B CN 201010196647 A CN201010196647 A CN 201010196647A CN 101902145 B CN101902145 B CN 101902145B
Authority
CN
China
Prior art keywords
power
diode
module
booster converter
level inverter
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.)
Active
Application number
CN201010196647.8A
Other languages
English (en)
Other versions
CN101902145A (zh
Inventor
K·A·奥布赖恩
R·泰希曼
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.)
General Electric Grid Solutions LLC
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42289553&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN101902145(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by General Electric Co filed Critical General Electric Co
Publication of CN101902145A publication Critical patent/CN101902145A/zh
Application granted granted Critical
Publication of CN101902145B publication Critical patent/CN101902145B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/02016—Circuit arrangements of general character for the devices
    • H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • 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
    • 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
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • 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
    • 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
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Inverter Devices (AREA)

Abstract

本发明名称为“太阳能逆变器和控制方法”。提供一种包括生成直流(DC)功率的光电(PV)模块(12)的发电系统(40)。该系统包括确定用于发电系统的最大功率点的控制器(50)和用于从控制器(50)接收控制信号以将来自PV模块(12)的功率升压到将正弦电流注入到电网中所要求的阈值电压的升压变换器(42)。在系统中提供DC到交流(AC)多电平逆变器(48)以将功率从PV模块提供到电力网。该系统还包括用于在DC到AC多电平逆变器(48)的输入电压高于或等于阈值电压时旁路升压变换器(42)的旁路电路(44)。

Description

太阳能逆变器和控制方法
技术领域
本发明主要涉及电能变换，并且更具体来说涉及光电模块到电力网或负载的有效率的连接。
背景技术
随着常规能源的持续上升的成本和稀缺以及对于环境的关注，如太阳能和风力的备选能源中存在大量关注。太阳能发电使用光电(PV)模块以从太阳发电。在此类系统中，将多个PV电池彼此电连接。通过一个或多个功率电子变换器将PV模块发的电传送到电力网。
功率电子变换器的功率损耗是光电系统的单元尺寸设计中的重要问题，因为此类损耗对输送到负载的总能量有影响。功率损耗主要在变换器中出现，因为例如绝缘栅极双极型晶体管(IGBT)、金属氧化物场效应管(MOSFET)和二极管的开关装置中存在损耗，这些装置一般用在例如滤波器电感器的无源组件或变换器中。这些开关装置一般有三种主要类型的损耗：传导损耗、开关损耗和栅极驱动损耗。二极管中不存在栅极驱动损耗，但是传导损耗和开关损耗是二极管损耗中的非常大的部分。快速开关二极管中的损耗通常高于慢速开关二极管。开关损耗对应于开关装置的状态改变期间(接通和断开期间)发生的损耗。传导损耗对应于开关装置的传导(当装置正在传输电流时)期间开关装置中出现的损耗。栅极驱动损耗是指对开关装置的栅极-源极和栅极-漏极电容充电和放电所要求的能量，并且其受开关频率、漏极-源极电容和所跨电压影响。滤波器电感器损耗通常由铜和铁损耗来构成。功率变换器中的铜损耗通常因趋肤和邻近效应而增加。因此，期望确定将解决前面问题的方法和系统。
发明内容
根据本发明的一示范实施例，提供一种发电系统。该系统包括用于生成直流(DC)功率的光电模块和确定用于发电系统的最大功率点的控制器。该系统还包括用于从控制器接收控制信号以将来自PV模块的功率升压到将正弦电流注入到电网中所要求的阈值电压的升压变换器和将功率从PV模块供应到电力网的DC到交流(AC)多电平逆变器。该系统中还提供旁路电路以在DC到AC多电平逆变器的输入电压高于或等于阈值电压时旁路升压变换器。
根据本发明的另一个示范实施例，提供一种用于从包括PV模块的发电系统输送太阳能的方法。该方法包括为发电系统确定用于生成正弦电流的阈值电压，并确定在最大功率产生的PV模块的输出电压是否高于阈值电压。该方法还包括在PV模块的输出电压小于阈值电压时将来自PV模块的功率升压以达到阈值电压电平，并将所升压的功率变换成AC功率。该方法还包括在PV模块的输出电压高于阈值电压时旁路升压并直接将来自PV模块的功率变换成AC功率。
根据本发明的又一个示范实施例，提供一种用于控制发电系统的方法。该方法包括在PV模块的输出电压小于用于为发电系统生成正弦电流的阈值电压时使用升压变换器来控制直流(DC)链路的中心点的稳定性。该方法还包括在PV模块的输出电压高于阈值电压时使用DC到AC多电平变换器来控制中心点的稳定性。
附图说明
当参考附图来阅读下文的详细描述时，本发明的这些和其他特征、方面和优点将变得更好理解，附图中相似的符号表示遍布这些图的相似的部件，其中：
图1是常规太阳能发电系统的示意图表示；
图2是根据本发明的一实施例的太阳能发电系统的示意图表示；
图3是根据本发明的一实施例的两个电感器升压变换器连同分开的DC链路(splitDClink)的示意图表示；
图4是根据本发明的一实施例的另一个两个电感器升压变换器和分开的DC链路的示意图表示；以及
图5是根据本发明的一实施例的二极管钳位的多电平逆变器的一个分支(leg)及其输出波形的示意图表示。
具体实施方式
正如下文详细论述的，本发明的实施例用于提供用于从太阳能发电系统到负载或电力网的有效功率传输的系统和方法。
图1示出常规太阳能发电系统10。该发电系统包括PV模块12。PV模块通过DC/DC变换器16、DC链路18和电网侧三相DC/AC变换器20连接到电力网14。DC/AC变换器20保持DC链路18处的恒定DC电压，并因此从DC链路18到电力网14的能量流被管理。DC/DC变换器16由控制器22控制，而电网侧变换器20由电网侧控制器24来控制。系统控制器26为DC/DC变换器22和电网侧变换器20生成参考DC电压命令、参考输出电压幅度命令以及参考频率命令。在其他系统中，可以采用多个单相变换器来替换电网侧三相变换器和/或对于图1中所示的多个控制功能可以使用单个控制器。
图2示出根据本发明的一实施例的太阳能发电系统40。在一个实施例中，该系统包括PV模块12、升压变换器42、旁路电路44、分开的DC链路46、多电平三相逆变器48、升压侧最大功率点控制器(MPPT)控制器50和逆变器侧MPPT控制器52。电网电压Vac一般地确定最小DC链路电压。只要DC链路电压高于通常由最大峰值线到线电压设置的阈值或阈值电压，则由多电平逆变器48注入到电网中的电流将具有正弦波形。如果PV模块的最大功率点操作与低于阈值电压的电压关联，则使用升压侧MPPT控制器50来确定对于PV模块的电流电压(I-V)特性的最大功率点，以及向升压变换器提供开关信号以操作模块总是靠近该点。因此，升压变换器用于提升DC链路电压以使它至少等于阈值电压，以便从PV模块提取最大功率。
在一个实施例中，MPPT控制器50利用扰动和观察方法。在扰动和观察方法中，扰动从太阳能电池阵列汲取的电流，并观察功率变化。如果扰动导致功率的增加，则以相同方向来进行后续扰动，反之亦然。
当在最大功率输出的PV模块电压高于将正弦电流注入到电网中所需的阈值电压时，旁路电路44旁路升压变换器。换言之，当光电(PV)模块处的DC电压高于分开的DC链路处的最小电压时，旁路升压变换器。因为太阳能发电系统中的升压变换器对于某个持续时间被旁路，所以它通过对于该持续时间消除升压变换器和升压电感器中的损耗来提高系统的效率。在一个实施例中，旁路电路包括功率二极管或受电压控制的开关。在另一个实施例中，功率二极管包括碳化硅(SiC)二极管来进一步提高太阳能发电系统的效率。在提出的太阳能发电系统的一个实施例中，当旁路电路44旁路升压变换器42时，对多电平逆变器48操作MPPT。逆变器侧MPPT控制器52从PV模块感测电压和电流，并且它还从旁路电路44接收信号以确定电路44何时正在工作。如果旁路升压变换器，则控制器52向多电平逆变器48提供开关命令信号，以便多电平逆变器48将从PV模块提取最大功率。在一个实施例中，可以将控制器50和52组合成单个控制器。
图3示出根据本发明的一实施例的两个电感器升压变换器连同分开的DC链路的示意图60。升压变换器42包括开关装置62、64、升压电感器66、68以及二极管70、72和74。在一个实施例中，开关装置包括绝缘栅极双极晶体管(IGBT)或功率金属氧化物半导体场效应晶体管(MOSFET)。开关装置通常由栅极驱动电路来接通和断开，并且在一个实施例中，其包括碳化硅装置以提高电路的效率。分开的DC链路46包括两个电容器76和78。在操作中，在一个步骤中，接通开关装置62和64，这使得能量被存储在升压电感器66和68中。在另一个步骤中，当开关装置64仍接通时，开关装置62被断开。此步骤导致通过由升压电感器66、二极管70、电容器76、装置64和升压电感器68形成的充电路径对电容器76充电。在又一个步骤中，当装置62被接通时，开关装置64被断开。这导致通过由升压电感器66、装置62、电容器78、二极管72和升压电感器68形成的充电路径对电容器78充电。当装置62和64均被断开时，可以通过由升压电感器66、二极管70、电容器76、78、二极管72和升压电感器68形成的充电路径对电容器76和78充电。
图4示出根据本发明的一实施例的另一个两个电感器升压变换器和分开的DC链路的示意图90。在图4的实施例中，将单个开关装置92与两个二极管94和96一起使用，而非像图3的实施例中那样使用两个开关装置62和64。在操作中，当装置92被接通时，电流从升压电感器66、装置92和升压电感器68流动。因此，将能量存储在两个电感器中。在此时间期间，二极管70和72分别阻挡电压V1和V2。当装置92被断开时，电流从升压电感器66、二极管70、电容器76和78、二极管72和升压电感器68流动。因此，对电容器76和78充电。
图5示出根据本发明的一实施例的二极管钳位的多电平逆变器的一个分支或一个相及其输出波形的示意图110。在一个实施例中，多电平逆变器的一个分支112包括四个开关装置114、116、118和120和两个二极管122和124。电压V1和V2由图3或图4的升压变换器42来控制以保持在Vdc/2，并且电压V3是相位A电压。而且，装置114是装置118的互补，即，当装置114正在传导时，装置118不在传导，并且反之亦然。相似地，装置116和120是彼此的互补。
在操作中，二极管钳位的多电平逆变器的一个分支具有三个开关级。在第一开关级中，装置114和116被接通，并且装置118和120被断开。假定稳定操作VI＝V2＝Vdc/2，V3变成Vdc。在第二开关级中，当装置112和120被断开时，装置116和118被接通。在此级中，V3等于Vdc/2。在此级中，输出电压等于多电平变换器的中心抽头(tap)或中心点126处的电压。中心点126是指两个DC链路电容器之间的连接点。在其中有多于两个DC链路电容器的一个实施例中，根据所利用的DC链路电容器的数量，可能有多于一个中心点。在操作中，根据由多电平变换器供应到电力网的负载电流，中心点电压不可保持稳定，并且因此电压V1和V2可从值Vdc/2波动。在一个实施例中，在PV模块的输出电压小于阈值电压时，中心点的稳定性由升压变换器来控制；而在PV模块的输出电压高于阈值电压时，中心点的稳定性由多电平变换器来控制。
在第三开关级中，装置114和116被接通，而装置118和120被断开。这导致V3变成零，如波形130中所示。因此，能看到相位电压V3具有三个电平Vdc、Vdc/2和0。然后将二极管钳位的三相逆变器的所有三个分支组合，并且将所得到的线电压(其具有五个电平，即Vdc、Vdc/2、0、-Vdc/2和-Vdc)馈送到电力网，如图2中所示。在另一个实施例(未示出)中，多电平逆变器可以包括快速电容器逆变器，该快速电容器逆变器包括梯形结构的DC电容器或级联的H桥逆变器，其中各个单相逆变器被串联。本领域技术人员将认识到，能根据电路拓扑并由此根据电路中的装置和二极管的数量将图5的三电平逆变器112增加到任何电平。随着逆变器中的电平数量增加，逆变器的输出波形接近纯正弦波，从而导致输出电压中的谐波更低。
多电平逆变器的优点是降低对无源装置(例如电感器)的dv/dt应力，这是因为电压步阶中小的增量、降低的电磁兼容性、开关装置和滤波器组件的更小的额定值以及输出电压在更少的失真、更低的谐波内容和更低的开关损耗方面的更好特征所引起的。
虽然本文仅示出并描述了本发明的某些特征，但是本领域技术人员将想到许多修改和改变。因此，要理解所附权利要求旨在涵盖落在本发明真正精神内的所有此类修改和改变。
要素列表
10常规太阳能发电系统
12PV阵列
14电力网
16DC/DC变换器
18DC链路
20电网侧变换器
22DC/DC控制器
24电网侧控制器
26系统控制器
40太阳能发电系统
42升压变换器
44旁路电路
46分开的DC链路
48多电平三相逆变器
50升压侧最大功率点跟踪(MPPT)控制器
52逆变器侧MPPT控制器
60两个电感器升压变换器的示意图
62，64开关装置
66，68升压电感器
70，72，74二极管
76，78电容器
90两个电感器升压变换器的示意图
92开关装置
94，96二极管
110包括分开的DC链路的二极管钳位的多电平逆变器的一个分支的示意图
112二极管钳位的多电平逆变器的一个分支
114，116，118，120开关装置
122，124二极管
126中心点
130多电平逆变器的一个分支的输出波形。

Claims (17)

1.一种发电系统，包括：
单个光电PV模块，生成直流DC功率；
控制器，用于确定所述发电系统的最大功率点；
升压变换器，包括升压电感器、二极管和开关装置，用于从所述控制器接收控制信号以将来自所述PV模块的功率升压到将正弦电流注入到电网中所要求的阈值电压；
直流DC到交流AC多电平逆变器，将所述功率从所述PV模块供应到电力网；以及
旁路电路，用于在所述DC到AC多电平逆变器的输入电压高于或等于所述阈值电压时旁路所述升压变换器的所述升压电感器、二极管和开关装置，
其中，所述升压变换器包括：
并联耦合到所述单个光电模块的两个电感器；
连接到所述电感器中对应之一的二极管，其中所述两个电感器中的第一个连接到第一二极管的第一端，并且所述两个电感器中的第二个连接到第二二极管的第二端；以及
连接在所述两个电感器之间并且连接到所述第一二极管的第一端和所述第二二极管的所述第二端的至少一个开关装置。
2.如权利要求1所述的系统，其中所述控制器还配置成在正常操作状况下向所述升压变换器发送最大功率点跟踪(MPPT)控制信号，以及在旁路操作状况期间向所述DC到AC多电平逆变器发送最大功率点跟踪(MPPT)控制信号。
3.如权利要求1所述的系统，其中所述升压变换器包括两个二极管和两个开关装置。
4.如权利要求1所述的系统，其中所述升压变换器包括一个开关装置和四个二极管。
5.如权利要求3所述的系统，其中所述开关装置包括绝缘栅极双极型晶体管或功率金属氧化物场效应晶体管。
6.如权利要求1所述的系统，其中所述升压变换器的输出级包括分开的DC链路。
7.如权利要求6所述的系统，其中所述分开的DC链路被耦合在所述升压变换器和所述多电平逆变器之间。
8.如权利要求6所述的系统，其中所述分开的DC链路包括其间具有中心抽头的两个电容器。
9.如权利要求8所述的系统，其中包括两个电感器的所述升压变换器控制在所述中心抽头的电压。
10.如权利要求1所述的系统，其中所述多电平逆变器是从二极管钳位的多电平逆变器、快速电容器多电平逆变器和级联的H桥多电平逆变器中选择的。
11.如权利要求1所述的系统，其中所述多电平逆变器包括三电平逆变器。
12.如权利要求1所述的系统，其中所述旁路电路包括功率二极管。
13.如权利要求1所述的系统，其中所述旁路电路包括两个碳化硅二极管。
14.如权利要求1所述的系统，其中所述多电平逆变器配置成在所述升压变换器被旁路时从所述PV模块直接获取最大功率。
15.如权利要求1所述的系统，其中所述旁路电路包括受电压控制的开关。
16.一种从包括单个光电PV模块的发电系统输送太阳能的方法，所述方法包括：
为所述发电系统确定用于生成正弦电流的阈值电压；
确定所述单个PV模块在最大功率产生的输出电压是否高于所述阈值电压；
在所述单个PV模块的输出电压小于所述阈值电压时，经包括升压电感器、二极管和开关的升压变换器将来自所述单个PV模块的功率升压以达到所述阈值电压电平，并且然后将所升压的功率变换成交流AC功率；以及
在所述单个PV模块的输出电压高于所述阈值电压时，旁路所述升压变换器的所述升压电感器、二极管和开关并直接将来自所述单个PV模块的功率变换成AC功率，
其中，所述升压变换器包括：
并联耦合到所述单个光电模块的两个电感器；
连接到所述电感器中对应之一的二极管，其中所述两个电感器中的第一个连接到第一二极管的第一端，并且所述两个电感器中的第二个连接到第二二极管的第二端；以及
连接在所述两个电感器之间并且连接到所述第一二极管的第一端和所述第二二极管的所述第二端的至少一个开关装置。
17.如权利要求16所述的方法，还包括：在所述单个PV模块的输出电压高于所述阈值电压时，在直接将来自所述单个PV模块的功率变换成AC功率时使用最大功率点跟踪(MPPT)控制信号。
CN201010196647.8A 2009-05-28 2010-05-28 太阳能逆变器和控制方法 Active CN101902145B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/473,700 US8184460B2 (en) 2009-05-28 2009-05-28 Solar inverter and control method
US12/473700 2009-05-28

Publications (2)

Publication Number Publication Date
CN101902145A CN101902145A (zh) 2010-12-01
CN101902145B true CN101902145B (zh) 2016-06-01

Family

ID=42289553

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010196647.8A Active CN101902145B (zh) 2009-05-28 2010-05-28 太阳能逆变器和控制方法

Country Status (4)

Country Link
US (1) US8184460B2 (zh)
EP (1) EP2256579B1 (zh)
CN (1) CN101902145B (zh)
AU (1) AU2010202078B2 (zh)

Families Citing this family (133)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11881814B2 (en) 2005-12-05 2024-01-23 Solaredge Technologies Ltd. Testing of a photovoltaic panel
US10693415B2 (en) 2007-12-05 2020-06-23 Solaredge Technologies Ltd. Testing of a photovoltaic panel
GB2454389B (en) 2006-01-13 2009-08-26 Enecsys Ltd Power conditioning unit
US8405367B2 (en) 2006-01-13 2013-03-26 Enecsys Limited Power conditioning units
US11728768B2 (en) 2006-12-06 2023-08-15 Solaredge Technologies Ltd. Pairing of components in a direct current distributed power generation system
US9112379B2 (en) 2006-12-06 2015-08-18 Solaredge Technologies Ltd. Pairing of components in a direct current distributed power generation system
US8013472B2 (en) 2006-12-06 2011-09-06 Solaredge, Ltd. Method for distributed power harvesting using DC power sources
US8319483B2 (en) 2007-08-06 2012-11-27 Solaredge Technologies Ltd. Digital average input current control in power converter
US8473250B2 (en) 2006-12-06 2013-06-25 Solaredge, Ltd. Monitoring of distributed power harvesting systems using DC power sources
US11309832B2 (en) 2006-12-06 2022-04-19 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US11888387B2 (en) 2006-12-06 2024-01-30 Solaredge Technologies Ltd. Safety mechanisms, wake up and shutdown methods in distributed power installations
US8963369B2 (en) 2007-12-04 2015-02-24 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US11569659B2 (en) 2006-12-06 2023-01-31 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US8319471B2 (en) 2006-12-06 2012-11-27 Solaredge, Ltd. Battery power delivery module
US8947194B2 (en) 2009-05-26 2015-02-03 Solaredge Technologies Ltd. Theft detection and prevention in a power generation system
US8618692B2 (en) 2007-12-04 2013-12-31 Solaredge Technologies Ltd. Distributed power system using direct current power sources
WO2009073868A1 (en) 2007-12-05 2009-06-11 Solaredge, Ltd. Safety mechanisms, wake up and shutdown methods in distributed power installations
US8816535B2 (en) 2007-10-10 2014-08-26 Solaredge Technologies, Ltd. System and method for protection during inverter shutdown in distributed power installations
US9088178B2 (en) 2006-12-06 2015-07-21 Solaredge Technologies Ltd Distributed power harvesting systems using DC power sources
US9130401B2 (en) 2006-12-06 2015-09-08 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US11855231B2 (en) 2006-12-06 2023-12-26 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US11296650B2 (en) 2006-12-06 2022-04-05 Solaredge Technologies Ltd. System and method for protection during inverter shutdown in distributed power installations
US11735910B2 (en) 2006-12-06 2023-08-22 Solaredge Technologies Ltd. Distributed power system using direct current power sources
US8384243B2 (en) 2007-12-04 2013-02-26 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
US11687112B2 (en) 2006-12-06 2023-06-27 Solaredge Technologies Ltd. Distributed power harvesting systems using DC power sources
EP2232690B1 (en) 2007-12-05 2016-08-31 Solaredge Technologies Ltd. Parallel connected inverters
US11264947B2 (en) 2007-12-05 2022-03-01 Solaredge Technologies Ltd. Testing of a photovoltaic panel
US8049523B2 (en) 2007-12-05 2011-11-01 Solaredge Technologies Ltd. Current sensing on a MOSFET
EP2722979B1 (en) 2008-03-24 2022-11-30 Solaredge Technologies Ltd. Switch mode converter including auxiliary commutation circuit for achieving zero current switching
WO2009136358A1 (en) 2008-05-05 2009-11-12 Solaredge Technologies Ltd. Direct current power combiner
FR2952482B1 (fr) * 2009-11-06 2011-11-18 Mge Ups Systems Dispositif convertisseur comprenant au moins cinq niveaux de tension continue et alimentation sans interruption pourvue dudit dispositif.
US8710699B2 (en) 2009-12-01 2014-04-29 Solaredge Technologies Ltd. Dual use photovoltaic system
KR101094002B1 (ko) * 2009-12-16 2011-12-15 삼성에스디아이 주식회사 전원 변환 장치
US8766696B2 (en) 2010-01-27 2014-07-01 Solaredge Technologies Ltd. Fast voltage level shifter circuit
US9142960B2 (en) * 2010-02-03 2015-09-22 Draker, Inc. Constraint weighted regulation of DC/DC converters
JP5521112B2 (ja) * 2010-04-19 2014-06-11 パワー−ワン イタリイ ソチエタ ペル アチオーニ マルチレベルｄｃ・ａｃコンバータ
US8390261B2 (en) 2010-05-21 2013-03-05 Infineon Technologies Austria Ag Maximum power point tracker bypass
KR101106413B1 (ko) * 2010-06-14 2012-01-17 삼성에스디아이 주식회사 에너지 저장 시스템의 인버터
US8772965B2 (en) * 2010-06-29 2014-07-08 General Electric Company Solar power generation system and method
EP2410648A1 (en) * 2010-07-20 2012-01-25 Vincotech Holdings S.a.r.l. DC/DC converter circuit and method for controlling a DC/DC converter circuit
US9350166B2 (en) 2010-10-05 2016-05-24 Alencon Acquisition Co., Llc High voltage energy harvesting and conversion renewable energy utility size electric power systems and visual monitoring and control systems for said systems
US9118215B2 (en) 2010-10-05 2015-08-25 Alencon Acquistion Co., Llc High voltage energy harvesting and conversion renewable energy utility size electric power systems and visual monitoring and control systems for said systems
US10673222B2 (en) 2010-11-09 2020-06-02 Solaredge Technologies Ltd. Arc detection and prevention in a power generation system
US10673229B2 (en) 2010-11-09 2020-06-02 Solaredge Technologies Ltd. Arc detection and prevention in a power generation system
US10230310B2 (en) 2016-04-05 2019-03-12 Solaredge Technologies Ltd Safety switch for photovoltaic systems
GB2485527B (en) 2010-11-09 2012-12-19 Solaredge Technologies Ltd Arc detection and prevention in a power generation system
GB2486408A (en) 2010-12-09 2012-06-20 Solaredge Technologies Ltd Disconnection of a string carrying direct current
US8259479B2 (en) * 2010-12-21 2012-09-04 General Electric Company Methods and systems for operating a two-stage power converter
GB2496140B (en) 2011-11-01 2016-05-04 Solarcity Corp Photovoltaic power conditioning units
GB2483317B (en) 2011-01-12 2012-08-22 Solaredge Technologies Ltd Serially connected inverters
GB2487368B (en) * 2011-01-18 2012-12-05 Enecsys Ltd Inverters
FR2976405B1 (fr) * 2011-06-08 2014-04-04 Commissariat Energie Atomique Dispositif de generation d'energie photovoltaique avec gestion individuelle des cellules
WO2012149387A1 (en) * 2011-04-27 2012-11-01 Solarbridge Technologies, Inc. Configurable power supply assembly
US8174856B2 (en) 2011-04-27 2012-05-08 Solarbridge Technologies, Inc. Configurable power supply assembly
US11901810B2 (en) 2011-05-08 2024-02-13 Koolbridge Solar, Inc. Adaptive electrical power distribution panel
US11460488B2 (en) 2017-08-14 2022-10-04 Koolbridge Solar, Inc. AC electrical power measurements
US8937822B2 (en) 2011-05-08 2015-01-20 Paul Wilkinson Dent Solar energy conversion and utilization system
AU2012253314B2 (en) * 2011-05-12 2016-11-24 Alencon Acquisition Co., Llc High voltage energy harvesting and conversion renewable energy utility size electric power systems and visual monitoring and control systems
US8842397B2 (en) * 2011-05-23 2014-09-23 Microsemi Corporation Photo-voltaic safety de-energizing device
KR101906895B1 (ko) * 2011-06-08 2018-10-11 엘에스산전 주식회사 태양광 전력 변환 장치
JP2014523225A (ja) * 2011-07-08 2014-09-08 エスエムエー ソーラー テクノロジー アーゲー Ｄｃ／ａｃコンバータ、発電プラント、および、ｄｃ／ａｃコンバータのための動作方法
US8570005B2 (en) 2011-09-12 2013-10-29 Solaredge Technologies Ltd. Direct current link circuit
US9537420B2 (en) 2011-09-21 2017-01-03 Enphase Energy, Inc. Method and apparatus for power module output power regulation
US8624411B2 (en) 2011-10-14 2014-01-07 General Electric Company Power generation system including predictive control apparatus to reduce influences of weather-varying factors
GB2496139B (en) 2011-11-01 2016-05-04 Solarcity Corp Photovoltaic power conditioning units
CN102403920B (zh) * 2011-11-16 2014-05-14 广东易事特电源股份有限公司 三电平半桥光伏并网逆变器
TW201328118A (zh) * 2011-12-28 2013-07-01 Hon Hai Prec Ind Co Ltd 不間斷電源系統
CN103186160B (zh) * 2011-12-31 2015-02-11 上海亿福新能源技术有限公司 一种光伏发电最大功率点跟踪的自调节控制方法
GB2498365A (en) 2012-01-11 2013-07-17 Solaredge Technologies Ltd Photovoltaic module
GB2498790A (en) 2012-01-30 2013-07-31 Solaredge Technologies Ltd Maximising power in a photovoltaic distributed power system
GB2498791A (en) 2012-01-30 2013-07-31 Solaredge Technologies Ltd Photovoltaic panel circuitry
US9853565B2 (en) 2012-01-30 2017-12-26 Solaredge Technologies Ltd. Maximized power in a photovoltaic distributed power system
US20130200709A1 (en) * 2012-02-03 2013-08-08 International Business Machines Corporation Techniques for Grid Coupling Photovoltaic Cells Using Ratiometric Voltage Conversion
GB2499991A (en) 2012-03-05 2013-09-11 Solaredge Technologies Ltd DC link circuit for photovoltaic array
US8885373B1 (en) * 2012-03-07 2014-11-11 Power-One Italy S.pA. Earth leakage current control for a multi-level grounded inverter
US9413268B2 (en) * 2012-05-10 2016-08-09 Futurewei Technologies, Inc. Multilevel inverter device and method
EP2859650B1 (en) 2012-05-25 2017-02-15 Solaredge Technologies Ltd. Circuit for interconnected direct current power sources
KR20130133413A (ko) * 2012-05-29 2013-12-09 엘에스산전 주식회사 태양광 발전 장치
US10115841B2 (en) 2012-06-04 2018-10-30 Solaredge Technologies Ltd. Integrated photovoltaic panel circuitry
US20140049998A1 (en) * 2012-08-16 2014-02-20 Leo F. Casey DC to AC Power Converter
US20140070614A1 (en) * 2012-09-07 2014-03-13 Atomic Energy Council-Institute Of Nuclear Energy Research Household Grid-Connected Inverter Applied to Solar Power Generation System with Maximum Power Tracking Function
WO2014045125A2 (en) 2012-09-18 2014-03-27 Ge Energy Power Conversion Technology Ltd System and method for providing periodic electrical isolation in a power system such as a solar power generation system
CN202817839U (zh) * 2012-09-21 2013-03-20 纽福克斯光电科技（上海）有限公司 一种应急启动机动车电路
US9557758B2 (en) 2012-10-16 2017-01-31 Volterra Semiconductor LLC Systems and methods for controlling maximum power point tracking controllers
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US9548619B2 (en) 2013-03-14 2017-01-17 Solaredge Technologies Ltd. Method and apparatus for storing and depleting energy
EP4318001A3 (en) 2013-03-15 2024-05-01 Solaredge Technologies Ltd. Bypass mechanism
WO2014144552A1 (en) * 2013-03-15 2014-09-18 Advanced Geosciences, Inc. High power current switch
WO2014147771A1 (ja) * 2013-03-20 2014-09-25 富士電機株式会社 太陽光発電システム
WO2014154390A1 (en) 2013-03-26 2014-10-02 Telefonaktiebolaget L M Ericsson (Publ) A voltage modulator
WO2014182818A1 (en) * 2013-05-07 2014-11-13 University Of Central Florida Research Foundation, Inc. Variable frequency iteration mppt for resonant power converters
US9270164B2 (en) 2013-06-19 2016-02-23 Tmeic Corporation Methods, systems, computer program products, and devices for renewable energy site power limit control
GB201312621D0 (en) * 2013-07-15 2013-08-28 Univ Plymouth Control arrangement
CN105431992B (zh) * 2013-07-23 2019-01-15 东芝三菱电机产业系统株式会社 太阳能发电用逆变器的控制装置
US9647571B2 (en) * 2013-08-02 2017-05-09 Solantro Semiconductor Corp. Internal inverter communications
US9337748B2 (en) * 2013-08-02 2016-05-10 Infineon Technologies Austria Ag System and method for a DC-to-DC power converter with inverter stage coupled to the DC input
KR101741075B1 (ko) * 2013-09-02 2017-05-29 엘에스산전 주식회사 태양광 인버터
ITBZ20130050A1 (it) * 2013-10-10 2015-04-11 Sunforlife S R L Ottimizzatore per stringhe fotovoltaiche, tramite metodo innovativo di condivisione della carica che agisce in parallelo alle stringhe ovvero preservandone l'originale collegamento serie
US9728974B2 (en) 2013-10-10 2017-08-08 Tmeic Corporation Renewable energy site reactive power control
EP3061174B1 (en) 2013-10-21 2018-04-25 ABB Schweiz AG Double-stage inverter apparatus for energy conversion systems and control method thereof
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
US9555711B2 (en) * 2014-06-03 2017-01-31 Hamilton Sundstrand Corporation Power converters
CN104038036B (zh) * 2014-06-30 2016-08-24 阳光电源股份有限公司 悬浮电压抑制方法、装置、逆变器控制系统及其逆变器
CN104158208A (zh) * 2014-07-15 2014-11-19 阳光电源股份有限公司 一种单级光伏并网逆变器及其控制方法和应用
CN104269914A (zh) * 2014-10-15 2015-01-07 四川东方电气自动控制工程有限公司 一种风光互补控制逆变一体机
CN104377977A (zh) * 2014-12-08 2015-02-25 国家电网公司 一种三电平逆变器及其控制方法
US9912151B2 (en) * 2015-01-23 2018-03-06 General Electric Company Direct current power system
US9806601B2 (en) * 2015-03-27 2017-10-31 Futurewei Technologies, Inc. Boost converter and method
CN105048854A (zh) * 2015-07-21 2015-11-11 珠海格力电器股份有限公司 三相非隔离并网变换器及空调系统
GB201513549D0 (en) * 2015-07-31 2015-09-16 Siemens Ag Inverter
CN105186901B (zh) * 2015-09-06 2017-10-27 阳光电源股份有限公司 一种五电平逆变器输入电压控制方法及装置
US10938218B2 (en) 2015-12-28 2021-03-02 Sunpower Corporation Solar tracker system
CN105490302B (zh) * 2016-01-22 2018-03-13 国家电网公司 一种无需交直流电流传感器的多电平光伏逆变装置
CN105490303B (zh) * 2016-01-22 2018-10-16 国家电网公司 一种无需交直流电流传感器的多电平储能功率转换控制装置
CN105515513B (zh) * 2016-01-29 2018-08-03 阳光电源股份有限公司 一种光伏逆变器及其控制方法
CN107153212B (zh) 2016-03-03 2023-07-28 太阳能安吉科技有限公司 用于映射发电设施的方法
US11081608B2 (en) 2016-03-03 2021-08-03 Solaredge Technologies Ltd. Apparatus and method for determining an order of power devices in power generation systems
US10599113B2 (en) 2016-03-03 2020-03-24 Solaredge Technologies Ltd. Apparatus and method for determining an order of power devices in power generation systems
US11177663B2 (en) 2016-04-05 2021-11-16 Solaredge Technologies Ltd. Chain of power devices
US12057807B2 (en) 2016-04-05 2024-08-06 Solaredge Technologies Ltd. Chain of power devices
US11018623B2 (en) 2016-04-05 2021-05-25 Solaredge Technologies Ltd. Safety switch for photovoltaic systems
US10483759B2 (en) 2016-04-07 2019-11-19 Alencon Acquisition Co., Llc Integrated multi-mode large-scale electric power support system for an electrical grid
US10236690B2 (en) * 2016-06-30 2019-03-19 Sunpower Corporation Backfeed power supply for solar power system
JP6952245B2 (ja) * 2016-09-30 2021-10-20 パナソニックＩｐマネジメント株式会社 電力変換システム
CN107302319A (zh) * 2017-06-14 2017-10-27 珠海格力电器股份有限公司 单相正弦波逆变器及其控制方法
CN107317343B (zh) * 2017-08-24 2023-05-12 长沙理工大学 高效级联h桥型动态电压恢复器及其控制方法
CN110350812B (zh) * 2018-04-08 2024-08-13 佛山科学技术学院 一种用于ups的逆变器模块
US10516365B1 (en) * 2018-06-20 2019-12-24 Schneider Electric Solar Inverters Usa, Inc. DC voltage control in renewable energy based multilevel power converter
FR3084798B1 (fr) * 2018-08-03 2020-10-30 Schneider Electric Ind Sas Convertisseur de puissance multiniveaux
US10651739B1 (en) 2019-02-25 2020-05-12 Nextracker Inc. Power converters and methods of controlling same
CN110994975B (zh) * 2019-12-18 2020-11-10 阳光电源股份有限公司 一种电容钳位式直流变换电路
WO2022006737A1 (zh) * 2020-07-07 2022-01-13 华为数字能源技术有限公司 一种电源系统
CN112234649A (zh) * 2020-10-15 2021-01-15 珠海格力电器股份有限公司 自适应的光伏供电系统及其控制方法、空调机组

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101436833A (zh) * 2007-11-14 2009-05-20 通用电气公司 采用光伏逆变器将直流电转换成交流电的方法和系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389158A (en) * 1989-04-17 1995-02-14 The Boeing Company Low bandgap photovoltaic cell with inherent bypass diode
US5179508A (en) 1991-10-15 1993-01-12 International Business Machines Corp. Standby boost converter
US6111767A (en) * 1998-06-22 2000-08-29 Heliotronics, Inc. Inverter integrated instrumentation having a current-voltage curve tracer
AUPS143902A0 (en) * 2002-03-28 2002-05-09 Curtin University Of Technology Power conversion system and method of converting power
US7227278B2 (en) * 2004-01-21 2007-06-05 Nextek Power Systems Inc. Multiple bi-directional input/output power control system
WO2006137948A2 (en) * 2004-12-29 2006-12-28 Isg Technologies Llc Efficiency booster circuit and technique for maximizing power point tracking
EP1852963B1 (en) * 2005-02-25 2016-04-06 Mitsubishi Denki Kabushiki Kaisha Power conversion apparatus
US8013472B2 (en) * 2006-12-06 2011-09-06 Solaredge, Ltd. Method for distributed power harvesting using DC power sources
GB0625121D0 (en) * 2006-12-18 2007-01-24 Gendrive Ltd Electrical energy converter
US7772716B2 (en) * 2007-03-27 2010-08-10 Newdoll Enterprises Llc Distributed maximum power point tracking system, structure and process
US20090000654A1 (en) * 2007-05-17 2009-01-01 Larankelo, Inc. Distributed inverter and intelligent gateway
US20090014050A1 (en) * 2007-07-13 2009-01-15 Peter Haaf Solar module system and method using transistors for bypass
EP2104200B1 (de) 2008-03-22 2019-02-27 SMA Solar Technology AG Verfahren zur ansteuerung eines multi-string-wechselrichters für photovoltaikanlagen
CN101350569A (zh) * 2008-09-03 2009-01-21 深圳职业技术学院 太阳能光伏逆变器拓扑结构
US8334616B2 (en) * 2008-09-19 2012-12-18 Electric Power Research Institute, Inc. Photovoltaic integrated variable frequency drive
US20100157632A1 (en) * 2008-12-20 2010-06-24 Azuray Technologies, Inc. Energy Conversion Systems With Power Control
US8400134B2 (en) * 2009-11-12 2013-03-19 Intersil Americas Inc. Apparatus and methodology for maximum power point tracking for a solar panel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101436833A (zh) * 2007-11-14 2009-05-20 通用电气公司 采用光伏逆变器将直流电转换成交流电的方法和系统

Also Published As

Publication number Publication date
US8184460B2 (en) 2012-05-22
US20100302819A1 (en) 2010-12-02
EP2256579A1 (en) 2010-12-01
AU2010202078A1 (en) 2010-12-16
AU2010202078B2 (en) 2015-07-23
EP2256579B1 (en) 2017-09-27
CN101902145A (zh) 2010-12-01

Similar Documents

Publication Publication Date Title
CN101902145B (zh) 太阳能逆变器和控制方法
EP2323248B1 (en) Operation of a three level converter
CN105379098B (zh) 三电平逆变器
EP2713495B1 (en) Multilevel converter system
US9344005B2 (en) Method and apparatus for producing three-phase current
CN104348376B (zh) 多电平变流器系统
Khan et al. A highly reliable and high-efficiency quasi single-stage buck–boost inverter
US20040165408A1 (en) Dc to ac inverter with single-switch bipolar boost circuit
US9190934B2 (en) Multilevel hybrid inverter and operating method
KR20120041791A (ko) Ｄｃ-ａｃ 인버터 장치, 특히 태양전지 인버터
EP2728734A1 (en) A three-level neutral-point-clamped inverter
CN102055355A (zh) 功率转换装置
CN105874703A (zh) 具有软开关切换的逆变器和方法
Anandababu et al. Neutral point clamped MOSFET inverter with full-bridge configuration for nonisolated grid-tied photovoltaic system
Tripathi et al. MVDC microgrids enabled by 15kV SiC IGBT based flexible three phase dual active bridge isolated DC-DC converter
US9537421B2 (en) Multilevel converter
Sahan et al. Combining the benefits of SiC T-MOSFET and Si IGBT in a novel ANPC power module for highly compact 1500-V grid-tied inverters
Lee et al. Design of bus-side RCD snubber circuit for three-phase high-power inverters
Babaei et al. A new structure of quasi Z-source-based cascaded multilevel inverter
CN110729896A (zh) 基于mmc的双向直流变换器及其控制系统
Zheng et al. SiC MOSFET based modular universal power electronics regulator
Rao et al. Modelling and analysis of Matrix Converters Using MATLAB
PRASANNA et al. PV Cell Fed 3-Level Full-MOSFET Inverter for Induction Machine Drive Applications
CN117280593A (zh) 功率转换器
Kurmaiah et al. Comparison of high efficiency with different topology transformerless photovoltaic power converters

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20240328

Address after: American Georgia

Patentee after: General Electric Grid Solutions LLC

Country or region after: U.S.A.

Address before: New York, United States

Patentee before: General Electric Co.

Country or region before: U.S.A.