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：US11289994B2

公开(公告)日：2022-03-29

申请号：US16862954

申请日：2020-04-30

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior ,  Thomas Wappler

IPC: H02M1/08 ,  H02M3/156 ,  H02M3/158 ,  H02M1/00

Abstract: A circuit arrangement includes a power semiconductor switch, a freewheeling diode, and a storage choke having a core and a winding coupled between a first choke terminal and a second choke terminal. The storage choke is configured to conduct a current flowing across the power semiconductor switch. The arrangement also includes a driver circuit configured to drive the power semiconductor switch via the control terminal thereof.

公开(公告)号：US09293247B2

公开(公告)日：2016-03-22

申请号：US14019603

申请日：2013-09-06

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior ,  Peter Zacharias

IPC: H01F17/00 ,  H01F27/04 ,  H01F21/00 ,  H02M3/335 ,  H01F27/42 ,  H01F7/02 ,  H01F37/00 ,  H01F3/10

CPC classification number: H01F27/42 ,  H01F7/0205 ,  H01F37/00 ,  H01F2003/103

Abstract: An AC inductor includes a core, at least one permanent magnet for magnetically biasing the core, an inductor winding on the core, and a circuitry which guides an alternating current which flows through the AC inductor in such a way through the inductor winding that, during each half-wave of the alternating current, the alternating current generates a magnetization of the core which is opposite to the magnetization by the permanent magnet. This circuitry includes a commutator which guides the alternating current flowing between two contacts of the AC inductor through the same part of the inductor winding with a same flow direction during each of the half-wave of the alternating current.

Abstract translation: AC电感器包括芯，至少一个用于磁性偏置芯的永磁体，在芯上的电感器绕组，以及电路，其以这样的方式引导流过AC电感器的交流电流通过电感绕组， 交流电的每个半波，交流电产生与永久磁铁的磁化相反的芯的磁化。 该电路包括一个换向器，它在交流电流的每个半波期间引导在交流电感器的两个触头之间流动的交流电流通过电感器绕组的相同部分以相同的流动方向流动。

公开(公告)号：US20140035711A1

公开(公告)日：2014-02-06

申请号：US14019603

申请日：2013-09-06

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior ,  Peter Zacharias

IPC: H01F27/42

CPC classification number: H01F27/42 ,  H01F7/0205 ,  H01F37/00 ,  H01F2003/103

Abstract: An AC inductor includes a core, at least one permanent magnet for magnetically biasing the core, an inductor winding on the core, and a circuitry which guides an alternating current which flows through the AC inductor in such a way through the inductor winding that, during each half-wave of the alternating current, the alternating current generates a magnetization of the core which is opposite to the magnetization by the permanent magnet. This circuitry includes a commutator which guides the alternating current flowing between two contacts of the AC inductor through the same part of the inductor winding with a same flow direction during each of the half-wave of the alternating current.

Abstract translation: AC电感器包括芯，至少一个用于磁性偏置芯的永磁体，在芯上的电感器绕组，以及电路，其以这样的方式引导流过AC电感器的交流电流通过电感绕组， 交流电的每个半波，交流电产生与永久磁铁的磁化相反的芯的磁化。 该电路包括一个换向器，它在交流电流的每个半波期间引导在交流电感器的两个触头之间流动的交流电流通过电感器绕组的相同部分以相同的流动方向流动。

公开(公告)号：US20190214511A1

公开(公告)日：2019-07-11

申请号：US16352093

申请日：2019-03-13

Applicant: SMA Solar Technology AG

Inventor： Markus Hopf ,  Burkard Mueller ,  Oliver Prior

IPC: H01L31/02 ,  H01L31/0443 ,  H02H7/20

CPC classification number: H01L31/02021 ,  H01L31/0443 ,  H02H7/20 ,  Y02E10/50

Abstract: A solar module includes a safety circuit, and a series circuit of bypass diodes, which is arranged between solar module connections, wherein the bypass diodes have bypass connections at both ends and all connecting points of the series circuit of bypass diodes. The solar module also includes a series circuit of solar partial modules having partial module terminals at both ends and all connecting points of the series circuit of solar partial modules, wherein each bypass diode is associated with precisely one solar partial module, and a plurality of semiconductor switches configured to disconnect the solar module connections from voltage at an associated partial module terminal when a disconnection signal is received by the safety circuit. Each of the plurality of semiconductor switches is configured to switch a solar partial module associated therewith into a voltage-free or current-free state, and at least one bypass connection is directly connected to an associated partial module terminal and at least one bypass connection is connected to an associated partial module terminal by means of one of the semiconductor switches.

公开(公告)号：US09793812B2

公开(公告)日：2017-10-17

申请号：US15238067

申请日：2016-08-16

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior

IPC: H02M3/22 ,  H02M3/24 ,  H02M7/5387 ,  H02M1/44 ,  H02J3/38 ,  H02M7/48 ,  H02M1/42 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M3/24 ,  H02J3/383 ,  H02M1/42 ,  H02M1/44 ,  H02M3/1582 ,  H02M7/48 ,  H02M7/53871 ,  H02M2001/007 ,  Y02E10/563

Abstract: A method for operating an inverter with reactive power capability that includes a voltage link circuit and an unfolding bridge, wherein poles of the voltage link circuit are configured to be selectively connected to terminals of an AC output in different configurations by means of the unfolding bridge, in order to change a polarity of the AC output relative to the voltage link circuit. The method includes in the case of a phase shift between an AC current (I) and an AC voltage (U) at the AC output reversing the direction of a current flowing via the voltage link circuit. Reversing the direction of the current flowing via the voltage link circuit includes disconnecting the AC output from the voltage link circuit, providing a freewheeling path between the terminals of the AC output, while the AC output is disconnected from the voltage link circuit, and reconnecting the AC output to the voltage link circuit with the polarity of the AC output relative to the voltage link circuit being changed by the unfolding bridge.

公开(公告)号：US20160359415A1

公开(公告)日：2016-12-08

申请号：US15238067

申请日：2016-08-16

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior

IPC: H02M3/24 ,  H02M1/42

CPC classification number: H02M3/24 ,  H02J3/383 ,  H02M1/42 ,  H02M1/44 ,  H02M3/1582 ,  H02M7/48 ,  H02M7/53871 ,  H02M2001/007 ,  Y02E10/563

Abstract: A method for operating an inverter with reactive power capability that includes a voltage link circuit and an unfolding bridge, wherein poles of the voltage link circuit are configured to be selectively connected to terminals of an AC output in different configurations by means of the unfolding bridge, in order to change a polarity of the AC output relative to the voltage link circuit. The method includes in the case of a phase shift between an AC current (I) and an AC voltage (U) at the AC output reversing the direction of a current flowing via the voltage link circuit. Reversing the direction of the current flowing via the voltage link circuit includes disconnecting the AC output from the voltage link circuit, providing a freewheeling path between the terminals of the AC output, while the AC output is disconnected from the voltage link circuit, and reconnecting the AC output to the voltage link circuit with the polarity of the AC output relative to the voltage link circuit being changed by the unfolding bridge.

Abstract translation: 一种用于操作具有无功功率能力的逆变器的方法，其包括电压链路电路和展开桥，其中所述电压链路电路的极被配置为通过所述展开桥选择性地连接到具有不同配置的AC输出的端子， 以便改变AC输出相对于电压链路电路的极性。 该方法包括在交流输出处的交流电流（I）和交流电压（U）之间的相移的情况下，使得经由电压链路电路流动的电流的方向反转。 逆转通过电压链路电流流动的电流的方向包括断开AC电压链路电路的交流输出，在交流输出的端子之间提供续流路径，同时将交流输出与电压链路电路断开，并重新连接 交流输出到电压链路电路，交流输出的极性相对于电压链路电路由展开桥改变。

公开(公告)号：US20140321166A1

公开(公告)日：2014-10-30

申请号：US14324299

申请日：2014-07-07

Applicant: SMA Solar Technology AG

Inventor： Stephanie Coors ,  Tobias Mueller ,  Oliver Prior

IPC: H02M7/42

CPC classification number: H02M7/42 ,  H02J3/08 ,  H02J3/383 ,  H02J3/40 ,  Y02E10/563 ,  Y10T307/735

Abstract: The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to the inverter is applied. The process includes: (i) synchronizing the inverter with the power grid; (ii) essentially matching a potential center point of the current-carrying lines of the AC output and a potential center point of the power grid, while only one of the potential center points of the current-carrying lines and the power grid is yet shifted by the offset voltage; and (iii) galvanically connecting all current-carrying lines of the AC output with the power grid only after the steps of synchronizing and essentially matching.

Abstract translation: 本发明涉及一种将太阳能发电厂的无变压器逆变器的交流输出连接到电隔离输入侧的内部交流电网的过程，同时用于使光伏发电机的潜在中心点相连的偏移电压 到变频器应用。 该过程包括：（i）使逆变器与电网同步; （ii）基本上匹配交流输出的载流线路的电位中心点和电网的潜在中心点，而载流线路和电网的潜在中心点中只有一个仍然偏移 通过偏移电压; 和（iii）仅在同步和基本匹配的步骤之后将AC输出的所有载流线与电网电连接。

公开(公告)号：US08804390B2

公开(公告)日：2014-08-12

申请号：US13671914

申请日：2012-11-08

Applicant: SMA Solar Technology AG

Inventor： Stephanie Coors ,  Tobias Mueller ,  Oliver Prior

IPC: H02M7/44 ,  H02M7/5387

CPC classification number: H02M7/42 ,  H02J3/08 ,  H02J3/383 ,  H02J3/40 ,  Y02E10/563 ,  Y10T307/735

Abstract: The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to the inverter is applied. The process includes: (i) synchronizing the inverter with the power grid; (ii) essentially matching a potential center point of the current-carrying lines of the AC output and a potential center point of the power grid, while only one of the potential center points of the current-carrying lines and the power grid is yet shifted by the offset voltage; and (iii) galvanically connecting all current-carrying lines of the AC output with the power grid only after the steps of synchronizing and essentially matching.

Abstract translation: 本发明涉及一种将太阳能发电厂的无变压器逆变器的交流输出连接到电隔离输入侧的内部交流电网的过程，同时用于使光伏发电机的潜在中心点相连的偏移电压 到变频器应用。 该过程包括：（i）使逆变器与电网同步; （ii）基本上匹配交流输出的载流线路的电位中心点和电网的潜在中心点，而载流线路和电网的潜在中心点中只有一个仍然偏移 通过偏移电压; 和（iii）仅在同步和基本匹配的步骤之后将AC输出的所有载流线与电网电连接。

公开(公告)号：US20200259419A1

公开(公告)日：2020-08-13

申请号：US16862954

申请日：2020-04-30

Applicant: SMA Solar Technology AG

Inventor： Jens Friebe ,  Oliver Prior ,  Thomas Wappler

IPC: H02M3/158 ,  H02M1/08

Abstract: A circuit arrangement includes a power semiconductor switch, a freewheeling diode, and a storage choke having a core and a winding coupled between a first choke terminal and a second choke terminal. The storage choke is configured to conduct a current flowing across the power semiconductor switch. The arrangement also includes a driver circuit configured to drive the power semiconductor switch via the control terminal thereof.