公开(公告)号：US20220011365A1

公开(公告)日：2022-01-13

申请号：US17278960

申请日：2019-09-24

Applicant: Fronius International GmbH

Inventor： Joachim DANMAYR ,  Christian KASBERGER

IPC: G01R31/327 ,  G01R31/42 ,  G01R19/165

Abstract: In order to be able to perform a shutdown test on an inverter with little expenditure, a trigger signal is modulated to the AC current or the AC voltage at a first moment, and the inverter is used at a second moment, which occurs a defined duration after the start of the trigger signal at the first moment, to generate an AC current or an AC voltage with a fault signal that is detected by the inverter and which triggers a shutdown of the inverter, and the shutdown moment of the AC current or the AC voltage is determined. A shutdown duration of the inverter is determined from the difference between the shutdown moment and the second moment.

公开(公告)号：US20210311130A1

公开(公告)日：2021-10-07

申请号：US17274245

申请日：2019-10-03

Applicant: Fronius International GmbH

Inventor： Gerhard WALLISCH ,  Joachim DANMAYR

IPC: G01R31/42 ,  H02S40/32 ,  H02S50/00

Abstract: The invention relates to a method for testing a disconnection point (12) of a photovoltaic inverter (1) and to a photovoltaic inverter (1) of this type. According to the invention, in a testing mode, an auxiliary voltage (U_Lx) is applied between the input (E_Lx) of each line (Lx) of the disconnection point (12) and an intermediate circuit potential (M), in each case, the first switching contacts (SW_Lx,1) are closed and the second switching contacts (SW_Lx,2) are opened alternately and vice versa, according to a switching pattern, and, for each switching pattern, the voltages (U_Lx,GD; U_MN) between the output (A_Lx) of each line (Lx) of the disconnection point (12) and the intermediate circuit potential (M) are measured, and the functionality of each switching contact (SW_Lx,j) is derived from the measured voltages (U_Lx,GD; U_MN).

公开(公告)号：US20150295512A1

公开(公告)日：2015-10-15

申请号：US14685723

申请日：2015-04-14

Applicant: FRONIUS INTERNATIONAL GMBH

Inventor： Joachim DANMAYR ,  Johannes STARZINGER ,  Julian LANDAUER

IPC: H02M7/44

CPC classification number: H02M7/44 ,  H02M1/36 ,  H02M3/00 ,  H02M2001/007 ,  Y02E10/56

Abstract: A method for feeding energy from photovoltaic modules (2) of a photovoltaic system (1) into a supply grid (5), or to a load, converts the DC voltage (UDC) generated by the photovoltaic modules (2) in an inverter (3) with an intermediate circuit (7) with a capacitor (CZW) and with a DC/AC-converter (8) into an AC voltage (UAC), and in a feed-in mode of operation the inverter (3) is connected via a switching device (4) to the supply grid (5), or to the load, together with an inverter (3) for executing the method. For conservation of the switching device (4) the input power (Pe) of the photovoltaic modules (2) is determined in a test procedure, and the switching device (4) of the inverter (3) is activated if the input power (Pe) of the photovoltaic modules (2) as determined is greater than or equal to a specified minimum input power (Pe,min).

Abstract translation: 用于将能量从光伏系统（1）的光伏模块（2）馈送到供电电网（5）或负载中的能量的方法将由逆变器中的光伏模块（2）产生的直流电压（UDC） 3），具有电容器（CZW）的中间电路（7）和具有DC / AC转换器（8）的AC电压（UAC），并且在馈入工作模式下，连接逆变器 与用于执行该方法的逆变器（3）一起通过开关装置（4）连接到电网（5）或负载。 为了保护开关器件（4），在测试过程中确定光伏模块（2）的输入功率（Pe），并且如果输入功率（Pe）被激活，则逆变器（3）的开关器件（4）被激活 ）大于或等于规定的最小输入功率（Pe，min）。

公开(公告)号：US20140226365A1

公开(公告)日：2014-08-14

申请号：US14178456

申请日：2014-02-12

Applicant: Fronius International GmbH

Inventor： Friedrich OBERZAUCHER ,  Joachim DANMAYR

IPC: G01R31/04 ,  H02M7/58

CPC classification number: G01R31/04 ,  G01R31/3278 ,  H02M7/58

Abstract: The invention relates to a method for checking a separation point (14) between a photovoltaic inverter (1) and a power supply network (7) having multiple phases (L1, L2, L3) and a neutral conductor (N), wherein multiple switching contacts of the separation point (14) are controlled by the photovoltaic inverter (1), and to a photovoltaic inverter (1). To allow a simple and quick check of the functionality of the separation point (14), the switching contacts of the separation point (14) are each formed by single-pole relays (15-22) and switched in steps according to a switching pattern. For checking switching contacts, a voltage (26, 27, 28) is measured at at least one phase (L1, L2, L3) with respect to the neutral conductor (N), upstream of the separation point (14), and compared to voltage values assigned in accordance with the switching pattern, thereby to deduce the functionality of the switching contacts.

Abstract translation: 本发明涉及一种用于检查光伏逆变器（1）和具有多相（L1，L2，L3）和中性导体（N）的电源网络（7）之间的分离点（14）的方法，其中多个开关 分离点（14）的接触由光伏逆变器（1）和光伏逆变器（1）控制。 为了简单快速地检查分离点（14）的功能，分离点（14）的开关触点各自由单极继电器（15-22）形成，并根据开关模式逐步切换 。 为了检查开关触点，在至少一相（L1，L2，L3）相对于中性导体（N）在分离点（14）的上游测量电压（26,27,28），并与 根据切换模式分配的电压值，从而推断开关触点的功能。