公开(公告)号：US20180269688A1

公开(公告)日：2018-09-20

申请号：US15982412

申请日：2018-05-17

Applicant: SMA Solar Technology AG

Inventor： Gerd Bettenwort ,  Christopher Merz

IPC: H02J3/38 ,  H01L31/02 ,  H02S50/10

CPC classification number: H02J3/385 ,  H01L31/02021 ,  H02S50/00 ,  H02S50/10

Abstract: A method for detecting a potential-induced degradation (PID) of PV modules of a PV installation, having a measurement pass, includes operating a PV generator of the PV installation at a maximum power point (MPP) with values of generator voltage (UMPP) and generator current (IMPP) associated with the maximum power point (MPP), and operating the PV generator of the PV installation at a first generator voltage (U1) and detection of a first generator current (I1) associated with the first generator voltage (U1). The method also includes operating the PV generator of the PV installation additionally at a second generator voltage (U2) and detection of a second generator current (I2) associated with the second generator voltage (U2), wherein the first generator voltage (U1) dictates that a first power (P1), with P1=U1*I1, of the PV generator at the first generator voltage (U1) is in a predefined first ratio (V1), with V1=P1/PMPP and V1≤1, with the power (PMPP) at the maximum power point (MPP) of the PV generator, and wherein the second generator voltage (U2) dictates that a second power (P2), with P2=U2*I2, of the PV generator at the second generator voltage (U2) is in a predefined second ratio (V2), with V2=P2/P1 and V2

公开(公告)号：US09625516B2

公开(公告)日：2017-04-18

申请号：US13729234

申请日：2012-12-28

Applicant: SMA Solar Technology AG

Inventor： Markus Hopf ,  Holger Behrends ,  Gerd Bettenwort ,  Sebastian Bieniek ,  Marcel Kratochvil

IPC: G01R31/26 ,  G08B13/14 ,  H02S50/10

CPC classification number: G01R31/2642 ,  G08B13/1409 ,  H02S50/10

Abstract: A device and corresponding method for monitoring a photovoltaic system to detect an occurrence of events impairing normal operation of the photovoltaic system is provide. The photovoltaic system includes a photovoltaic generator including a first group of photovoltaic modules and a second group of photovoltaic modules being different from the first group. The device includes a first and a second pair of coupling means, both pairs including signal coupling-in means for coupling a test signal into the photovoltaic generator, and a signal coupling-out means for coupling out a response signal from the photovoltaic generator, the first pair of coupling means configured to selectively detect the occurrence of the events in the first group of photovoltaic modules, and the second pair of coupling means configured to selectively detect the occurrence of the events in the second group of photovoltaic modules.

公开(公告)号：US20150153153A1

公开(公告)日：2015-06-04

申请号：US14571386

申请日：2014-12-16

Applicant: SMA Solar Technology AG

Inventor： Daniel Premm ,  Yehia Tarek Fawzy ,  Gerd Bettenwort ,  Claus Allert ,  Thorsten Buelo ,  Stijn Stevens

IPC: G01B7/28 ,  G05B13/02 ,  H02J13/00 ,  G01R31/42

CPC classification number: G01B7/28 ,  G01B2210/58 ,  G01R31/42 ,  G05B13/021 ,  H02J3/00 ,  H02J13/0017 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S20/48 ,  Y04S40/22

Abstract: For determining the topology of a grid section of an AC power grid, the grid section comprising a grid connection point, at least one branch branching off from the grid connection point and including a plurality of energy consumption and/or energy generation units, and at least one measurement point in the at least one branch, dependencies of variations of a grid voltage measured at the at least one measurement point based on variations of connection power values of at least some individual ones of the energy consumption and/or energy generation units are determined.

Abstract translation: 为了确定交流电网的电网部分的拓扑，电网部分包括电网连接点，至少一个分支从电网连接点分支并包括多个能量消耗和/或能量产生单元，以及 至少一个分支中的至少一个测量点，基于能量消耗和/或能量产生单元中的至少一些个体的连接功率值的变化，在至少一个测量点测量的电网电压的变化的依赖性是 决心。

公开(公告)号：US08860358B2

公开(公告)日：2014-10-14

申请号：US13748707

申请日：2013-01-24

Applicant: SMA Solar Technology AG

Inventor： Gerd Bettenwort ,  Jens Klein ,  Markus Hopf

IPC: H01M10/44 ,  G05F5/00 ,  G05F1/67

CPC classification number: G05F5/00 ,  G05F1/67 ,  Y02E10/58 ,  Y10T307/696

Abstract: A method includes searching for a point of maximum power based on a systematic load variation, setting the point of maximum power as the operating point of the photovoltaic generator, and tracking the operating point based on a load variation with a narrow variation range. The method also includes analyzing operating variables of the photovoltaic generator to determine the level of probability that the operating point deviates from the point of maximum power, selectively interrupting the tracking and carrying out another search to determine the point of maximum power as a function of the analysis of the operating variables, and setting the point of maximum power as the operating point, and resuming the tracking. The method further takes into account previous searches carried out in the presence of comparable operating variables to determine the probability.

Abstract translation: 一种方法包括基于系统负载变化来搜索最大功率点，将最大功率点设置为光伏发电机的工作点，并且基于具有窄变化范围的负载变化跟踪工作点。 该方法还包括分析光伏发电机的操作变量以确定工作点偏离最大功率点的概率水平，选择性地中断跟踪并执行另一次搜索以确定最大功率点作为 分析操作变量，并将最大功率点设置为工作点，并恢复跟踪。 该方法还考虑到在存在可比操作变量的情况下进行的先前检索以确定概率。

公开(公告)号：US11558011B2

公开(公告)日：2023-01-17

申请号：US15982412

申请日：2018-05-17

Applicant: SMA Solar Technology AG

Inventor： Gerd Bettenwort ,  Christopher Merz

IPC: H02J3/38 ,  H02S50/10 ,  H02S50/00 ,  H01L31/02

Abstract: A method for detecting a potential-induced degradation (PID) of PV modules of a PV installation includes operating a PV generator at a maximum power point (MPP), at a first generator voltage (U1) and first generator current (I1), and at a second generator voltage (U2) and second generator current (I2), where a first power (P1) at the first generator voltage (U1) is in a predefined first ratio V1=P1/PMPP and V1≤1, with the power (PMPP) at the maximum power point (MPP) of the PV generator, and where a second power (P2) at the second generator voltage (U2) is in a predefined second ratio V2=P2/P1 and V2

公开(公告)号：US20190354129A1

公开(公告)日：2019-11-21

申请号：US16527449

申请日：2019-07-31

Applicant: SMA Solar Technology AG

Inventor： Joachim Laschinski ,  Gerd Bettenwort

IPC: G05F1/67 ,  H02J3/38 ,  H02S40/36 ,  H02S50/10

Abstract: A method for determining a currently maximum possible power of a photovoltaic (PV) installation operated in a curtailed manner and including a PV generator having at least one string, wherein the at least one string comprises a series circuit of PV modules, in which at least one PV module is connected to adjacent PV modules in the string via a coupling circuit. The installation further includes an inverter which is connected, on the output side, to an energy supply grid and is connected, on the input side, to the PV generator. The installation also includes a controller for controlling the inverter and the coupling circuit, wherein the controller, in conjunction with the coupling circuit, is designed to vary a power drain of the PV module assigned to it relative to a power drain of the adjacent PV modules during operation of the PV installation.

公开(公告)号：US09046588B2

公开(公告)日：2015-06-02

申请号：US14105377

申请日：2013-12-13

Applicant: SMA Solar Technology AG

Inventor： Holger Behrends ,  Sebastian Bieniek ,  Thorsten Buelo ,  Markus Hopf ,  Gerd Bettenwort ,  Marcel Kratochvil ,  Christopher Merz ,  Oliver Prior

IPC: H02H3/00 ,  G01R31/40 ,  H02H1/00 ,  H01L31/02 ,  H02S50/10 ,  H02H7/20

CPC classification number: G01R31/40 ,  H01L31/02021 ,  H02H1/0015 ,  H02H7/20 ,  H02S50/10 ,  Y02E10/50

Abstract: A method for detecting an arc fault in a photovoltaic power circuit includes operating a photovoltaic generator at a first working point. A first signal related to a DC-current and/or a DC-voltage in the power circuit is determined. The first signal is analyzed and it is determined whether the signal indicates the presence of an electric arc in the power circuit. If so, the photovoltaic generator is operated at a second working point and a second signal related to the DC-current and/or the DC-voltage is determined. The first and second signals are then compared; and the occurrence of an arc fault in the power circuit is selectively signaled based on the comparison.

Abstract translation: 一种用于检测光伏电力电路中的电弧故障的方法包括在第一工作点处操作光伏发电机。 确定与电源电路中的直流电流和/或直流电压有关的第一信号。 对第一信号进行分析，确定信号是否指示电源电路中存在电弧。 如果是这样，则光伏发电机在第二工作点运行，并且确定与DC电流和/或DC电压相关的第二信号。 然后比较第一和第二信号; 并且基于该比较选择性地发信号通知电力电路中的电弧故障。

公开(公告)号：US08837098B2

公开(公告)日：2014-09-16

申请号：US13667607

申请日：2012-11-02

Applicant: SMA Solar Technology AG

Inventor： Matthias Victor ,  Gerd Bettenwort ,  Frank Greizer ,  Adrian Haering ,  Joachim Laschinski ,  Bernd Engel

IPC: H02H3/00 ,  H01L31/02 ,  H02J3/38 ,  H02H7/20

CPC classification number: H01L31/02021 ,  H02H7/20 ,  H02J3/383 ,  Y02B10/12 ,  Y02B10/14 ,  Y02E10/563

Abstract: A protection system configured to couple between a generator that has a number of partial strings and an inverter includes a control device, and a series-connection switching device configured to selectively connect the partial strings together in series. The system also includes a parallel-connection switching device configured to selectively connect the partial strings together in parallel, wherein the series-connection switching device is actuated by the control device such that it interrupts the series connection of the partial strings in case of a hazard, and the parallel-connection switching device is actuated by the control device such that it connects the partial strings together in parallel in case of a hazard.

Abstract translation: 配置成在具有多个部分串的发电机和逆变器之间耦合的保护系统包括控制装置和被配置为将部分串串联选择性地连接的串联连接切换装置。 该系统还包括并联连接切换装置，其被配置为并行地选择性地将部分串连接在一起，其中串联连接切换装置由控制装置致动，使得在有危险的情况下中断部分串的串联 并且并联连接切换装置由控制装置致动，使得在有危险的情况下它将部分串并联在一起。

公开(公告)号：US20130147275A1

公开(公告)日：2013-06-13

申请号：US13760624

申请日：2013-02-06

Applicant: SMA Solar Technology AG

Inventor： Gerd Bettenwort ,  Joachim Laschinski

IPC: H02M7/44

CPC classification number: H02M7/44 ,  H02J3/383 ,  Y02E10/563 ,  Y10T307/50

Abstract: An inverter for feeding a grid-compatible AC voltage into a grid is described, wherein the inverter includes an inverter bridge for converting a DC voltage to a first AC voltage and a grid interface between the inverter bridge and the grid for converting the first AC voltage to the grid-compatible AC voltage for feeding into the grid. An AC interface via which an AC module for feeding into the grid can be connected, is arranged between the inverter bridge and the grid interface.

Abstract translation: 描述了一种用于将电网兼容的AC电压馈送到电网中的逆变器，其中逆变器包括用于将DC电压转换为第一AC电压的逆变器桥和用于将第一AC电压转换的逆变桥与电网之间的电网接口 到电网兼容的交流电压进入电网。 可以在逆变桥与电网接口之间设置可以连接用于馈入电网的交流模块的交流接口。

公开(公告)号：US20130134955A1

公开(公告)日：2013-05-30

申请号：US13748707

申请日：2013-01-24

Applicant: SMA Solar Technology AG

Inventor： Gerd Bettenwort ,  Jens Klein ,  Markus Hopf

IPC: G05F5/00

CPC classification number: G05F5/00 ,  G05F1/67 ,  Y02E10/58 ,  Y10T307/696

Abstract: A method includes searching for a point of maximum power based on a systematic load variation, setting the point of maximum power as the operating point of the photovoltaic generator, and tracking the operating point based on a load variation with a narrow variation range. The method also includes analyzing operating variables of the photovoltaic generator to determine the level of probability that the operating point deviates from the point of maximum power, selectively interrupting the tracking and carrying out another search to determine the point of maximum power as a function of the analysis of the operating variables, and setting the point of maximum power as the operating point, and resuming the tracking. The method further takes into account previous searches carried out in the presence of comparable operating variables to determine the probability.

Abstract translation: 一种方法包括基于系统负载变化来搜索最大功率点，将最大功率点设置为光伏发电机的工作点，并且基于具有窄变化范围的负载变化跟踪工作点。 该方法还包括分析光伏发电机的操作变量以确定工作点偏离最大功率点的概率水平，选择性地中断跟踪并执行另一次搜索以确定最大功率点作为 分析操作变量，并将最大功率点设置为工作点，并恢复跟踪。 该方法还考虑到在存在可比操作变量的情况下进行的先前检索以确定概率。