公开(公告)号：US20130271888A1

公开(公告)日：2013-10-17

申请号：US13862638

申请日：2013-04-15

申请人： SMA SOLAR TECHNOLOGY AG

发明人： Andreas Falk ,  Gerold Schulze ,  Volker Bergs

IPC分类号： H02H3/02

CPC分类号： H02H3/02 ,  H01L31/02021 ,  H02H3/18 ,  H02H9/041 ,  Y02E10/50

摘要： The disclosure relates to a PV system including at least one inverter coupled to a grid via an AC disconnecting element and at least one transformer. The PV system includes at least one PV sub-generator having at least one PV string connected to a DC connection region of the inverter via DC lines. The PV system includes protection devices including a DC short-circuiting switch for short-circuiting the at least one PV string and a reverse-current protection element connected downstream thereof. The protection device includes an AC short-circuiting switch arranged upstream of the AC disconnecting element.

摘要翻译： 本公开涉及一种PV系统，其包括经由AC断开元件和至少一个变压器耦合到电网的至少一个逆变器。 PV系统包括至少一个PV子发生器，其具有经由DC线路连接到逆变器的DC连接区域的至少一个PV串。 PV系统包括保护装置，包括用于短路至少一个PV串的DC短路开关和与其下游连接的反向电流保护元件。 保护装置包括设置在交流隔离元件上游的交流短路开关。

公开(公告)号：US20130242616A1

公开(公告)日：2013-09-19

申请号：US13888795

申请日：2013-05-07

申请人： SMA SOLAR TECHNOLOGY AG

发明人： Hendrik Oldenkamp

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02J3/383 ,  H02M3/335 ,  H02M7/4807 ,  Y02E10/563

摘要： A power inverter includes two input terminals, two output terminals and a resonant converter that includes a high frequency transformer having a primary winding and a secondary winding, at least one high frequency switched semiconductor power switch that connects one end of the primary winding of the high frequency transformer to one of the input terminals to provide a current path through the primary winding to the other one of the input terminals. The power inverter further includes a resonant series circuit having an inductance and a capacitance, and a high frequency rectifier that rectifies a current through the secondary winding, two output lines, and an output converter connected between the output lines of the high frequency rectifier and the two output terminals.

摘要翻译： 功率逆变器包括两个输入端子，两个输出端子和一个谐振变换器，其包括具有初级绕组和次级绕组的高频变压器，至少一个高频开关半导体功率开关，其将高次谐波的初级绕组的一端 变频器连接到一个输入端子，以提供通过初级绕组到另一个输入端子的电流路径。 电力逆变器还包括具有电感和电容的谐振串联电路和对通过次级绕组的电流进行整流的高频整流器，两个输出线和连接在高频整流器的输出线和 两个输出端子。

公开(公告)号：USRE44485E1

公开(公告)日：2013-09-10

申请号：US13411349

申请日：2012-03-02

申请人： Andreas Falk

发明人： Andreas Falk

IPC分类号： H02M3/335 ,  H02M7/5387

CPC分类号： H02M3/3372 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  H02J3/387 ,  H02J2001/004 ,  H02M3/337 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02E10/563 ,  Y02E10/763

摘要： A device (1) for feeding electrical energy from an energy source with variable source voltage into an electric power supply network (15), said device (1) including a transformer (112) for galvanic isolation, a resonant inverter (11) with semi-conductor switches (a-d; A, B), one or several resonant capacitors (17; 18, 19; 20, 21) and one rectifier (113), is intended to provide high efficiency and have galvanic isolation. This is achieved in that the resonant inverter (11) is operated in the full resonant mode if the operating voltage is in an operation point (MPP) and in the hard-switching mode if the voltages exceed the operation point (MPP).

摘要翻译： 1.一种用于从具有可变源电压的能量源将能量馈送到电力供应网络（15）的装置（1），所述装置（1）包括用于电隔离的变压器（112），具有半静态的谐振逆变器（11） 导体开关（ad; A，B），一个或多个谐振电容器（17; 18,19,20,21）和一个整流器（113）旨在提供高效率并具有电流隔离。 如果工作电压处于工作点（MPP），并且如果电压超过工作点（MPP），则在硬切换模式下，谐振逆变器11工作在全谐振模式。

公开(公告)号：US08379418B2

公开(公告)日：2013-02-19

申请号：US12618426

申请日：2009-11-13

申请人： Andreas Falk

发明人： Andreas Falk

IPC分类号： H02M7/5375

CPC分类号： H02M1/36 ,  H02J3/385 ,  H02M7/48 ,  H02M2001/007 ,  H02M2001/0074 ,  Y02E10/58

摘要： A power converter arrangement configured to convert a direct voltage into an alternating voltage to be supplied to a grid includes a photovoltaic generator configured to generate the direct voltage, a voltage intermediate circuit, a main power converter connected in series with a bypass switch, a maximum power point controller configured to set a maximum power point voltage, and at least one voltage-limited additional circuit configured to be active during a start-up phase of the photovoltaic generator. The at least one voltage-limited additional circuit and the main power converter are configured as a voltage divider in parallel with the photovoltaic generator. The at least one voltage-limited additional circuit is configured as a capacitive voltage divider having a first capacitor and an intermediate circuit capacitor connected in series.

摘要翻译： 配置成将直流电压转换为供电到电网的交流电压的功率转换器装置包括被配置为产生直流电压的光伏发电机，电压中间电路，与旁路开关串联连接的主电力转换器，最大值 功率点控制器，被配置为设置最大功率点电压，以及配置为在光伏发电机的启动阶段期间有效的至少一个限压附加电路。 所述至少一个电压限制附加电路和所述主功率转换器被配置为与所述光伏发电机并联的分压器。 所述至少一个限压附加电路被配置为具有串联连接的第一电容器和中间电路电容器的电容分压器。

公开(公告)号：US20120319495A1

公开(公告)日：2012-12-20

申请号：US13597857

申请日：2012-08-29

申请人： Burkard Müller ,  Lars Bethke

发明人： Burkard Müller ,  Lars Bethke

IPC分类号： H02M7/537 ,  H02J1/00

CPC分类号： H02M7/48 ,  H02J3/383 ,  H02J7/35 ,  H02J9/062 ,  H02M2001/0006 ,  H02M2001/008 ,  Y02B10/72 ,  Y02E10/563 ,  Y02E10/566 ,  Y10T307/707

摘要： An inverter includes a DC/AC converter connectable to a DC power grid, at least one DC/DC converter arranged upstream of the DC/AC converter and providing a galvanic isolation, and a DC voltage link at the input of the at least one DC/DC converter and connectable to at least one DC power source. The inverter also includes at least one further DC voltage link which is galvanically isolated from the first DC voltage link by the DC/DC converter, on-board voltage rails supplying a controller and other auxiliary devices of the inverter with electric energy; and an on-board supply unit. The on-board supply unit is configured and adapted to feed the electric energy into the on-board voltage rails both out of the first DC voltage link and out of the at least one further DC voltage link.

摘要翻译： 逆变器包括可连接到直流电网的DC / AC转换器，布置在DC / AC转换器上游的至少一个DC / DC转换器并提供电隔离，以及在至少一个DC的输入处的DC电压链路 / DC转换器，并可连接至少一个直流电源。 逆变器还包括至少一个直流电压链路，其由DC / DC转换器与第一DC电压链电隔离，车载电压轨为逆变器提供电能的控制器和其他辅助装置; 和一个车载电源单元。 车载电源单元被配置和适于将电能馈送到第一直流电压链路外的至少一个另外的直流电压链路中的车载电压轨。

公开(公告)号：US20120280566A1

公开(公告)日：2012-11-08

申请号：US13549866

申请日：2012-07-16

申请人： Andreas Umland

发明人： Andreas Umland

IPC分类号： H02J3/00

CPC分类号： H02J3/26 ,  Y02E40/50 ,  Y10T307/414

摘要： For levelling the partial powers which flow at a grid connection point between a multi-phase AC power grid having a plurality of phase conductors and a unit for feeding electric energy into the AC power grid having a multi-phase inverter as well as electric consumer loads connected to the AC power grid, via the individual phase conductors, differences between the partial powers flowing via the individual phase conductors are determined and are reduced by feeding different partial powers with the inverter into the individual phase conductors.

摘要翻译： 为了使在具有多个相位导体的多相交流电网之间的电网连接点处流动的部分功率和用于将电能馈送到具有多相逆变器的交流电网的单元以及电力消耗负载 通过各个相导体连接到交流电网，通过将各个相导体流过的部分功率之间的差异确定并通过将逆变器的不同部分功率馈入各个相导体而减小。

公开(公告)号：US20120262952A1

公开(公告)日：2012-10-18

申请号：US13532046

申请日：2012-06-25

申请人： Klaus Rigbers ,  Carsten Althof ,  Frank Papenfuss

发明人： Klaus Rigbers ,  Carsten Althof ,  Frank Papenfuss

IPC分类号： H02M3/335

CPC分类号： H02M3/33569 ,  H02M3/22

摘要： A DC/DC converter includes two input terminals for a DC input voltage, two output terminals for a DC output voltage, an inverter converting a DC voltage into an AC voltage, and a rectifier converting an AC voltage from the inverter into a DC voltage between a first one of the input terminals and a first one of the output terminals. At least one galvanically isolating element is arranged between the output of the inverter and the input of the rectifier, and a capacitance is coupled between the output terminals. The inverter converts a partial DC voltage, being smaller than the full DC input voltage, across a capacitance between the second one of the input terminals and the second one of the output terminals.

摘要翻译： DC / DC转换器包括用于DC输入电压的两个输入端子，用于DC输出电压的两个输出端子，将DC电压转换为AC电压的逆变器，以及将来自逆变器的AC电压转换为DC电压的整流器 输入端子中的第一个和输出端子中的第一个。 在逆变器的输出端与整流器的输入端之间至少设有一个电流隔离元件，电容耦合在输出端子之间。 逆变器将第二个输入端子和第二个输出端子之间的电容之间的电容转换成小于整个直流输入电压的部分直流电压。

公开(公告)号：US08258823B2

公开(公告)日：2012-09-04

申请号：US13294362

申请日：2011-11-11

申请人： Oliver Prior ,  Tobias Strubel

发明人： Oliver Prior ,  Tobias Strubel

IPC分类号： H03K3/00

CPC分类号： H03K17/162 ,  H02M1/08 ,  H03K17/0406 ,  H03K17/04123 ,  H03K17/168

摘要： To operate a semiconductor power switch having a control electrode and a reference electrode in response to first and second switching commands, a control voltage between a first electric pole and a second electric pole is provided. Upon each first switching command, the control electrode is coupled to the first electric pole, and the reference electrode is coupled to the second electric pole; and upon each second switching command, the control electrode is coupled to the second electric pole, and the reference electrode is coupled to the first electric pole. Upon each switching command, continuously transitioning an electric potential of the one of the control and reference electrodes during a first transition period, and continuously transitioning an electric potential of the respective other of the control and reference electrodes during a second transition period occurs, wherein the first transition period beginning before and ending after the second transition period.

摘要翻译： 为了响应于第一和第二开关命令操作具有控制电极和参考电极的半导体功率开关，提供了第一电极和第二电极之间的控制电压。 在每个第一切换命令时，控制电极耦合到第一电极，并且参考电极耦合到第二电极; 并且在每个第二切换命令时，所述控制电极耦合到所述第二电极，并且所述参考电极耦合到所述第一电极。 在每个切换命令时，在第一过渡期间连续地转换控制和参考电极中的一个的电位，并且在第二过渡期间连续地转换控制和参考电极中的另一个的电位，其中， 第一个过渡期从第二个过渡期之前开始到结束。

公开(公告)号：US20120200960A1

公开(公告)日：2012-08-09

申请号：US13439250

申请日：2012-04-04

申请人： Burkhard Mueller

发明人： Burkhard Mueller

IPC分类号： H02H7/06

CPC分类号： G01R15/146 ,  G01R19/0092 ,  G01R27/18

摘要： The invention is a method and electric circuitry for measuring a grounding current of a photovoltaic power system incorporating a photovoltaic inverter, a measurement current being led through two shunts disposed at different points. The measurement current is a current that may flow alternatively at two different points at different electric potentials, the current flowing at a potential that differs by at least 50 V from the potential of the point of evaluation. The shunts are inserted in such a manner in a current mirror circuit that the voltage drop caused by the measurement in the shunts generates an asymmetry in the current mirror the magnitude of which is proportional to the measurement current. The measurement current is the grounding current of the photovoltaic power system with optional positive or negative pole grounding.

摘要翻译： 本发明是一种用于测量包含光伏逆变器的光伏电力系统的接地电流的方法和电路，测量电流通过设置在不同点的两个分路引导。 测量电流是可以在不同电位的两个不同点处交替流动的电流，电流以与评估点的电位相差至少50V的电位流动。 分流器以这样的方式插入电流镜电路中，使得由分流器中的测量引起的电压降在电流镜中产生不对称，其大小与测量电流成比例。 测量电流是具有可选正极或负极接地的光伏电力系统的接地电流。

公开(公告)号：US20120126626A1

公开(公告)日：2012-05-24

申请号：US13363733

申请日：2012-02-01

申请人： Andreas Falk ,  Jan Goldau ,  Gerold Schulze ,  Jochen Fischer

发明人： Andreas Falk ,  Jan Goldau ,  Gerold Schulze ,  Jochen Fischer

IPC分类号： H02J1/00

CPC分类号： H02J1/10 ,  H02J3/383 ,  Y02E10/563 ,  Y10T307/696

摘要： In a device for supplying electrical energy from a plurality of strings of photovoltaic modules to a power grid that includes a connection terminal for each string of the plurality of strings, wherein each connection terminal includes an over-current protection component including a power switch for selectively disconnecting the respective string. The device further includes a central insulation monitoring unit providing an insulation status of the entire plurality of strings, and the power switch of each over-current protection component includes an all-pole disconnecting power switch that can be opened and closed by a controller via a motor in response to the insulation status provided by the central insulation monitoring unit to select and selectively disconnect a string having an insulation failure. The device is further configured to supply electrical energy from the remaining strings of the plurality of strings having no insulation failure.

摘要翻译： 在用于从多个光伏模块串提供电能到包括用于多个串中的每一串的连接端子的电网的装置中，其中每个连接端子包括过电流保护部件，该过电流保护部件包括用于选择性地 断开相应的字符串。 该装置还包括提供整个多个串的绝缘状态的中央绝缘监测单元，并且每个过电流保护部件的电源开关包括全极断开电源开关，其可由控制器经由 电动机响应于由中央绝缘监测单元提供的绝缘状态，以选择和选择性地断开具有绝缘故障的串。 该装置还被配置为从不具有绝缘破坏的多个串的剩余串中提供电能。