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1. 发明授权

US09722425B2 Determining a string configuration in a multistring-inverter 有权
公开(公告)号：US09722425B2
公开(公告)日：2017-08-01
申请号：US14552638
申请日：2014-11-25
申请人： SMA Solar Technology AG
发明人： Sybille Pape , Tobias Mueller
IPC分类号： H02J7/34 , H02J1/10 , H02J3/38 , H02J1/12 , H02M3/04 , H02M7/44 , H02M1/00
CPC分类号： H02J1/12 , H02J3/383 , H02M3/04 , H02M7/44 , H02M2001/0048 , Y02E10/563 , Y10T307/549
摘要： In operating an inverter including input connectors, (i) to which strings of photovoltaic cells are connected, (ii) each of which is connected via a DC/DC converter to a common DC voltage link, and (iii) which are bridgeable, the partial powers flowing through the individual DC/DC converters are determined, and for some time at least two DC/DC converters are either operated with the aim of balancing the partial currents flowing through them or connected through. During this operation or connecting through, the partial powers flowing through the at least two DC/DC converters are compared with each other, and if a difference between the partial powers exceeds a threshold value, the DC/DC converters are subsequently operated in a way adjusted to the fact that they connect different strings to the DC voltage link.

2. 发明授权

US12132443B2 Method and circuit arrangement for detecting an arc and photovoltaic (PV) inverter having a corresponding circuit arrangement 有权
公开(公告)号：US12132443B2
公开(公告)日：2024-10-29
申请号：US17865606
申请日：2022-07-15
申请人： SMA Solar Technology AG
发明人： Marcel Kratochvil , Rainer Schmitt , Torsten Otto , Sybille Pape
IPC分类号： G01R31/66 , H02J3/14 , H02J3/38 , H02S40/32 , H02S40/36 , H02S50/00
CPC分类号： H02S50/00 , G01R31/66 , H02J3/14 , H02J3/381 , H02S40/32 , H02S40/36 , H02J2300/24
摘要： The disclosure describes a method for detecting an arc in a direct-current (DC) circuit comprising a DC load, a DC source supplying the DC load, and a circuit arrangement arranged between the DC source and the DC load. A power flow P between an input and an output of the circuit arrangement is suppressed by means of a switching circuit through cyclical interruption such that the power flow P is enabled in an active time window with the first period Δt1 and the power flow P is suppressed in an inactive time window with the second period Δt2. Via detection of an input current Iin flowing at the input and/or an input voltage Uin applied to the input and comparison of values of the input current Iin and/or input voltage Uin detected in the inactive time window with a current threshold value ITH or a voltage threshold value UTH an arc presence criterion is signaled if the input current Iin detected in the inactive time window falls below the current threshold value ITH and/or the input voltage Uin detected in the inactive time window does not exceed the voltage threshold value UTH. The application also describes a circuit arrangement for detecting an arc and a photovoltaic (PV) inverter including such a circuit arrangement.

3. 发明申请

US20210408793A1 METHOD FOR THREE-PHASE SUPPLY INTO AN ALTERNATING VOLTAGE NETWORK, AND THREE-PHASE INVERTER 有权
公开(公告)号：US20210408793A1
公开(公告)日：2021-12-30
申请号：US17473150
申请日：2021-09-13
申请人： SMA Solar Technology AG
发明人： Alexander Unru , Moritz Welker , Neidhardt Bechtel , Sybille Pape
IPC分类号： H02J3/26 , H02M7/5387
摘要： A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.

4. 发明申请

US20220360214A1 METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING AN ARC AND PHOTOVOLTAIC (PV) INVERTER HAVING A CORRESPONDING CIRCUIT ARRANGEMENT 有权
公开(公告)号：US20220360214A1
公开(公告)日：2022-11-10
申请号：US17865606
申请日：2022-07-15
申请人： SMA Solar Technology AG
发明人： Marcel Kratochvil , Rainer Schmitt , Torsten Otto , Sybille Pape
IPC分类号： H02S50/00 , H02S40/36 , H02S40/32
摘要： The disclosure describes a method for detecting an arc in a direct-current (DC) circuit comprising a DC load, a DC source supplying the DC load, and a circuit arrangement arranged between the DC source and the DC load. A power flow P between an input and an output of the circuit arrangement is suppressed by means of a switching circuit through cyclical interruption such that the power flow P is enabled in an active time window with the first period Δt1 and the power flow P is suppressed in an inactive time window with the second period Δt2. Via detection of an input current Iin flowing at the input and/or an input voltage Uin applied to the input and comparison of values of the input current Iin and/or input voltage Uin detected in the inactive time window with a current threshold value ITH or a voltage threshold value UTH an arc presence criterion is signaled if the input current Iin detected in the inactive time window falls below the current threshold value ITH and/or the input voltage Uin detected in the inactive time window does not exceed the voltage threshold value UTH. The application also describes a circuit arrangement for detecting an arc and a photovoltaic (PV) inverter including such a circuit arrangement.

5. 发明授权

US11855459B2 Method for three-phase supply into an alternating voltage network, and three-phase inverter 有权
公开(公告)号：US11855459B2
公开(公告)日：2023-12-26
申请号：US17473150
申请日：2021-09-13
申请人： SMA Solar Technology AG
发明人： Alexander Unru , Moritz Welker , Neidhardt Bechtel , Sybille Pape
IPC分类号： H02M7/5387 , H02J3/26
CPC分类号： H02J3/26 , H02M7/53875
摘要： A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.

6. 发明申请

US20220365145A1 METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING AN ARC, AND PHOTOVOLTAIC (PV) INVERTER HAVING A CORRESPONDING CIRCUIT ARRANGEMENT 有权
公开(公告)号：US20220365145A1
公开(公告)日：2022-11-17
申请号：US17865573
申请日：2022-07-15
申请人： SMA Solar Technology AG
发明人： Rainer Schmitt , Marcel Kratochvil , Sybille Pape
IPC分类号： G01R31/66 , H02S40/32 , H02J3/38 , H02J3/14
摘要： The disclosure is directed to a method for detecting an arc in a direct-current circuit including a DC load, a DC source supplying the DC load, and a circuit arrangement arranged between the DC source and the DC load. A power flow between the DC source and an output of the circuit arrangement is cyclically interrupted by a switching circuit, such that the power flow is enabled in an active time window with the first period Δt1 and the power flow is suppressed in an inactive time window with the second period Δt2. Detection of a current I characterizing the power flow P and/or a voltage U characterizing the power flow P in two consecutive active time windows and comparison of the detected values of current I and/or voltage U of the active time window with the corresponding detected values from the preceding active time window can signal an arc if these values of the active time window differ from the corresponding values of the preceding active time window by more than a threshold value. The application also describes a circuit arrangement for detecting an arc and a photovoltaic (PV) inverter comprising such a circuit arrangement.

7. 发明申请

US20150076911A1 DETERMINING A STRING CONFIGURATION IN A MULTISTRING-INVERTER 有权
标题翻译：确定多台逆变器中的一个配置
公开(公告)号：US20150076911A1
公开(公告)日：2015-03-19
申请号：US14552638
申请日：2014-11-25
申请人： SMA Solar Technology AG
发明人： Sybille Pape , Tobias Mueller
IPC分类号： H02J1/12 , H02M3/04 , H02M7/44
CPC分类号： H02J1/12 , H02J3/383 , H02M3/04 , H02M7/44 , H02M2001/0048 , Y02E10/563 , Y10T307/549
摘要： In operating an inverter including input connectors, (i) to which strings of photovoltaic cells are connected, (ii) each of which is connected via a DC/DC converter to a common DC voltage link, and (iii) which are bridgeable, the partial powers flowing through the individual DC/DC converters are determined, and for some time at least two DC/DC converters are either operated with the aim of balancing the partial currents flowing through them or connected through. During this operation or connecting through, the partial powers flowing through the at least two DC/DC converters are compared with each other, and if a difference between the partial powers exceeds a threshold value, the DC/DC converters are subsequently operated in a way adjusted to the fact that they connect different strings to the DC voltage link.
摘要翻译：在操作包括输入连接器的逆变器时，（i）连接有光伏电池串，（ii）每个逆变器经由DC / DC转换器连接到公共直流电压链路，以及（iii）可桥接的，确定流过各个DC / DC转换器的部分功率，并且在一段时间内，至少两个DC / DC转换器的操作是为了平衡流过它们的或通过连接的部分电流。在该操作或连接期间，流过至少两个DC / DC转换器的部分功率相互比较，并且如果部分功率之间的差超过阈值，则DC / DC转换器随后以某种方式操作调整到它们将不同的串连接到直流电压链路的事实。

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