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31.发明申请公开(公告)号：US20130088252A1
公开(公告)日：2013-04-11
申请号：US13677685
申请日：2012-11-15
Applicant: SMA Solar Technology AG
Inventor： Ludwig Brabetz , Oliver Haas , Mohamed Ayeb , Gerd Bettenwort , Markus Hopf , Sebastian Bieniek , Oliver Prior
IPC: G01R31/26
CPC classification number: H02S50/10 , G01R31/026
Abstract: A method for monitoring of contacts of a photovoltaic system includes injection of a test signal having a plurality of frequencies, into the photovoltaic system, and determining a generator impedance of the photovoltaic system by evaluating a response signal associated with the test signal. The method further includes monitoring of contacts of the photovoltaic system independently of operating states of the photovoltaic system by modelling of an alternating-current response of the photovoltaic system based on the determined generator impedance, wherein the modelling is specific to at least two different operating states of the photovoltaic system.
Abstract translation: 用于监测光伏系统的触点的方法包括将具有多个频率的测试信号注入到光伏系统中，以及通过评估与测试信号相关联的响应信号来确定光伏系统的发电机阻抗。 所述方法还包括通过基于所确定的发电机阻抗对所述光伏系统的交流响应进行建模而独立于所述光伏系统的运行状态监视所述光伏系统的触点，其中所述建模特定于至少两个不同的操作状态 的光伏系统。
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公开(公告)号：US20220109401A1
公开(公告)日：2022-04-07
申请号：US17553865
申请日：2021-12-17
Applicant: SMA Solar Technology AG
Inventor： Michael Viotto , Markus Hopf , Bernhard Schropp
Abstract: The disclosure relates to a method for determining a characteristic curve for a photovoltaic (PV) string of a photovoltaic system having an inverter which is connected to the photovoltaic string and to a power supply network. The photovoltaic string includes a series connection of a plurality of photovoltaic modules, in which series connection at least one of the photovoltaic modules is integrated into the series connection of the photovoltaic modules via a DC/DC converter. The at least one DC/DC converter operates the photovoltaic module assigned thereto in a first operating mode M1 at a maximum power point by varying, over time, a conversion ratio of output voltage (UOut) to input voltage (UIn), and operates the photovoltaic module in a second operating mode M2 with a conversion ratio of output voltage (UOut) to input voltage (UIn) that is constant over time. The method includes operating the at least one DC/DC converter in the second operating mode M2 in response to a current signature for the current (IStr) through the photovoltaic string, determining the characteristic curve by varying the current IStr or the voltage UStr of the photovoltaic string by the inverter, and detecting values assigned to one another for current IStr and voltage UStr of the photovoltaic string in the second operating mode M2 of the DC/DC converter.
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公开(公告)号：US10666043B2
公开(公告)日：2020-05-26
申请号：US16197447
申请日：2018-11-21
Applicant: SMA Solar Technology AG
Inventor： Markus Hopf
IPC: H03K3/00 , H03K3/64 , H01H35/00 , H01H83/00 , H02H7/20 , H01L31/05 , H02S40/32 , H02S50/00 , H02S40/36 , H02J3/38
Abstract: A description is given of an apparatus for disconnecting a connection between solar modules of a photovoltaic string. A circuit breaker, a band-stop filter and a supply circuit are arranged in a series circuit between a first and second terminal. The series circuit is configured to conduct a current that includes a DC string current flowing through the photovoltaic string and a high-frequency control signal modulated onto the DC string current. The supply circuit is configured to generate energy to power the apparatus from the DC string current. An AC bypass circuit bridges the circuit breaker in parallel and is configured to conduct the high-frequency control signal. A control unit is configured to operate the apparatus based on the high-frequency control signal. A reverse current diode oppositely polarized relative to an operating current flow is connected in parallel with the circuit breaker or the circuit breaker and the band-stop filter.
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公开(公告)号：US20190089148A1
公开(公告)日：2019-03-21
申请号：US16197447
申请日：2018-11-21
Applicant: SMA Solar Technology AG
Inventor： Markus Hopf
Abstract: A description is given of an apparatus for disconnecting a connection between solar modules of a photovoltaic string. A circuit breaker, a band-stop filter and a supply circuit are arranged in a series circuit between a first and second terminal. The series circuit is configured to conduct a current that includes a DC string current flowing through the photovoltaic string and a high-frequency control signal modulated onto the DC string current. The supply circuit is configured to generate energy to power the apparatus from the DC string current. An AC bypass circuit bridges the circuit breaker in parallel and is configured to conduct the high-frequency control signal. A control unit is configured to operate the apparatus based on the high-frequency control signal. A reverse current diode oppositely polarized relative to an operating current flow is connected in parallel with the circuit breaker or the circuit breaker and the band-stop filter.
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公开(公告)号：US09709623B2
公开(公告)日：2017-07-18
申请号：US13741534
申请日：2013-01-15
Applicant: SMA Solar Technology AG
Inventor： Marcel Kratochvil , Sebastian Bieniek , Holger Behrends , Markus Hopf
CPC classification number: G01R31/2637 , H01L31/02021 , H02S50/10 , Y02E10/50
Abstract: The apparatus for monitoring a photovoltaic system includes an incoupling circuit configured to couple an AC voltage test signal into the photovoltaic system, and an outcoupling circuit configured to outcouple a response signal, which is associated with the test signal, from the photovoltaic system, and an evaluation device, which is connected to the outcoupling circuit. The evaluation device is configured to identify events which adversely affect correct operation of the photovoltaic system. The apparatus is distinguished in that the outcoupling circuit includes a first transformer and a second transformer, each having a respective primary winding and each having a respective secondary winding which is connected to the evaluation device, with the primary windings of the first and second transformers being arranged in different electrical lines between a generator and an inverter in the photovoltaic system. The disclosure also relates to a corresponding method for monitoring a photovoltaic system.
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Patent Agency Ranking
公开(公告)号：US09478675B2
公开(公告)日：2016-10-25
申请号：US14540214
申请日：2014-11-13
Applicant: SMA Solar Technology AG
Inventor： Holger Behrends , Marcel Kratochvil , Markus Hopf
CPC classification number: H01L31/02021 , G01R31/1227 , H02H1/0015 , H02H7/20 , H02H7/261 , H02J3/383 , Y02E10/563
Abstract: The disclosure relates to a method for localizing and quenching an arc in a PV generator of a PV system, wherein the PV generator includes at least two PV subgenerators. An arc quenching circuit is associated with each PV subgenerator. The method includes detecting an arc in the PV generator. Then, a probability value is determined for each of the PV subgenerators, wherein the probability value is correlated with a probability that the arc is located in the corresponding PV subgenerator. A sequence for activating the arc quenching circuits is then determined that is dependent on the determined probability values. Then, the arc quenching circuits are activated successively in the order of the determined sequence.
Abstract translation: 本公开涉及一种用于在PV系统的PV发电机中定位和淬火电弧的方法，其中PV发电机包括至少两个PV子发电机。 一个灭弧电路与每个PV子发电机相关联。 该方法包括检测光伏发电机中的电弧。 然后，为每个PV子发生器确定概率值，其中概率值与弧位于相应PV子发生器中的概率相关。 然后确定用于激活灭弧电路的序列，其依赖于确定的概率值。 然后，按照确定的顺序依次激活灭弧回路。
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公开(公告)号：US09136688B2
公开(公告)日：2015-09-15
申请号：US13974194
申请日：2013-08-23
Applicant: SMA Solar Technology AG
Inventor： Joachim Laschinski , Marcel Kratochvil , Markus Hopf , Andreas Falk
CPC classification number: H02H1/0015 , H01L31/02021 , H02H3/16 , H02J3/383
Abstract: The method of detecting an arc fault in a power circuit includes determining a first signal related to current flowing in the power circuit is determined and analyzing the first signal to determine whether the signal indicates the presence of an electric arc in the power circuit. In case the first signal indicates the presence of an electric arc in the power circuit, means for suppressing an electric arc are activated. A second signal related to current flowing in the power circuit is then determined and analyzed. An occurrence of an arc fault in the power circuit is signaled if the second signal does not indicate the presence of an electric arc. The system for detecting an arc fault is designed to perform a corresponding method.
Abstract translation: 检测电源电路中的电弧故障的方法包括：确定与在电源电路中流动的电流相关的第一信号，并分析第一信号，以确定信号是否指示电源电路中存在电弧。 在第一信号表示在电源电路中存在电弧的情况下，激活用于抑制电弧的装置。 然后确定和分析与在电源电路中流动的电流有关的第二信号。 如果第二信号不表示电弧的存在，则发出电源电路中的电弧故障的发生。 用于检测电弧故障的系统被设计成执行相应的方法。
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38.发明授权Method and system for detecting an arc fault in a photovoltaic power system 有权用于检测光伏电力系统中的电弧故障的方法和系统公开(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
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。
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公开(公告)号：US20150053251A1
公开(公告)日：2015-02-26
申请号：US14528353
申请日：2014-10-30
Applicant: SMA Solar Technology AG
Inventor： Markus Hopf
CPC classification number: H05K5/0247 , H01R4/24 , H01R4/2433 , H01R9/2425 , H01R13/501 , H01R13/5216 , H02G3/16 , H02S40/34 , H05K5/0004 , H05K5/0221 , H05K5/0226
Abstract: The disclosure relates to an apparatus including a multi-part housing to be assembled around two lines and conducting a power current generated by a solar module, and an electric circuitry arranged within the housing. The apparatus further includes connection devices for connecting the electric circuitry to the two lines such that at least one component of the electric circuitry is connected in parallel to the solar module. The connection devices include insulation displacement terminals which electrically contact the two lines, and at least one cutting blade made of an electrically insulating material cutting through at least one of the two lines in assembling the multi-part housing.
Abstract translation: 本发明涉及一种装置，包括要组装在两条线上并传导由太阳能模块产生的电力电流的多部分壳体和布置在壳体内的电路。 该装置还包括用于将电路连接到两条线的连接装置，使得电路的至少一个部件与太阳能模块并联连接。 连接装置包括与两条线电接触的绝缘位移端子，以及至少一个由电绝缘材料制成的切割刀片，以在组装多部件壳体时切穿两条线中的至少一条线。
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公开(公告)号：US20140062500A1
公开(公告)日：2014-03-06
申请号：US14074235
申请日：2013-11-07
Applicant: SMA Solar Technology AG
Inventor： Holger Behrends , Marcel Kratochvil , Markus Hopf , Sebastian Bieniek
IPC: G01R31/02
CPC classification number: G01R31/02 , G01R31/024 , H02H1/0015 , H02H1/003 , H02S50/10
Abstract: A method of detecting an arc fault in a power circuit includes injecting an AC-signal into the power circuit and measuring a response signal that is related to the injected AC-signal in the power circuit. The method further includes determining a frequency response of the power circuit from the response signal, analyzing the frequency response, and identifying a preferred frequency. A signal related to AC-current flowing in the power circuit within the preferred frequency range is measured and an occurrence of an arc fault in the power circuit is signaled depending on the measured signal. A system for detecting an arc fault is designed to perform a method as described before.
Abstract translation: 一种检测电力电路中的电弧故障的方法包括将AC信号注入电源电路并测量与电源电路中注入的AC信号相关的响应信号。 该方法还包括根据响应信号确定电源电路的频率响应，分析频率响应以及识别优选频率。 测量在优选频率范围内在电力电路中流动的AC电流的信号，并根据测量信号发出电源电路中的电弧故障的发生。 设计用于检测电弧故障的系统来执行如前所述的方法。
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