公开(公告)号：US20160301312A1

公开(公告)日：2016-10-13

申请号：US15185756

申请日：2016-06-17

申请人： SMA Solar Technology AG

发明人： Alexander Unru ,  Martin Bock

IPC分类号： H02M3/158 ,  H02M7/537

CPC分类号： H02M3/158 ,  H02J3/385 ,  H02M1/32 ,  H02M3/156 ,  H02M7/537 ,  H02M7/53871 ,  H02M2001/007 ,  H02M2001/327 ,  Y02E10/58

摘要： A method and corresponding system for operating an inverter includes setting an input voltage (UPV) of the inverter by an input-side DC-DC converter and/or an output-side inverter bridge, wherein the input voltage (UPV) corresponds to an MPP voltage (UMPP) at which a generator connectable on the input side outputs a maximum electrical power, and determining a first temperature value (TDCDC) in the DC-DC converter and a second temperature value (TDCAC) in the inverter bridge. The method or corresponding system further includes changing the input voltage (UPV) of the inverter with respect to the MPP voltage (UMPP) if at least one of the determined temperature values (TDCDC, TDCAC) exceeds a limit value (Tmax,DCDC, Tmax,DCAC) assigned to the respective temperature values (TDCDC, TDCAC), increasing the input voltage (UPV) with respect to the MPP voltage (UMPP) if an exceedance of the limit value (Tmax,DCDC) for the first temperature value (TDCDC) in the DC-DC converter is determined and/or the MPP voltage (UMPP) lies below a predefined limit voltage (Ulimit), and otherwise reducing the input voltage (UPV) ith respect to the MPP voltage (UMPP).

摘要翻译： 用于操作逆变器的方法和相应的系统包括通过输入侧DC-DC转换器和/或输出侧逆变桥来设置逆变器的输入电压（UPV），其中输入电压（UPV）对应于MPP 电压（UMPP），其中在输入侧可连接的发电机输出最大电力，并确定DC-DC转换器中的第一温度值（TDCDC）和逆变器桥中的第二温度值（TDCAC）。 如果所确定的温度值（TDCDC，TDCAC）中的至少一个超过极限值（Tmax，DCDC，Tmax），则该方法或对应系统还包括相对于MPP电压（UMPP）改变逆变器的输入电压（UPV） 分配给相应温度值（TDCDC，TDCAC）的DCAC），相对于MPP电压（UMPP）增加输入电压（UPV），如果超过第一温度值（TDCDC）的极限值（Tmax，DCDC） ）和/或MPP电压（UMPP）低于预定极限电压（Ulimit），否则降低相对于MPP电压（UMPP）的输入电压（UPV）。

公开(公告)号：US20140233263A1

公开(公告)日：2014-08-21

申请号：US14260741

申请日：2014-04-24

申请人： SMA Solar Technology AG

发明人： Martin Bock ,  Tobias Mueller ,  Thomas Ortmann ,  Alexander Unru

IPC分类号： H02M7/42

CPC分类号： H02M7/42 ,  G05F1/67 ,  Y02E10/58

摘要： The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate circuit voltage is repeatedly decreased or increased in one direction to a lower or higher voltage by voltage steps of a specified magnitude. The method is characterized in that an average rate of change of the intermediate circuit voltage in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage. The disclosure further relates to a tracking device designed to perform the tracking method and to an inverter equipped with the tracking device.

摘要翻译： 本公开涉及一种用于光伏系统的变压器，特别是逆变器的跟踪方法。 在该方法中，通过规定幅度的电压阶段，中间电路电压通过一个方向重复地减小或增加到较低或更高的电压。 该方法的特征在于，在两个电压阶段之间的部分时间段内的中间电路电压的平均变化率受到最大平均变化率的限制，最大平均变化率根据中间值的大小而定义 电路电压。 本公开还涉及被设计为执行跟踪方法的跟踪装置以及配备有跟踪装置的逆变器。

公开(公告)号：US10186966B2

公开(公告)日：2019-01-22

申请号：US15185756

申请日：2016-06-17

申请人： SMA Solar Technology AG

发明人： Alexander Unru ,  Martin Bock

IPC分类号： H02M3/158 ,  H02M1/32 ,  H02M7/537 ,  H02M3/156 ,  H02M7/5387 ,  H02M1/00 ,  H02J3/38

摘要： A method and corresponding system for operating an inverter includes setting an input voltage (UPV) of the inverter by an input-side DC-DC converter and/or an output-side inverter bridge, wherein the input voltage (UPV) corresponds to an MPP voltage (UMPP) at which a generator connectable on the input side outputs a maximum electrical power, and determining a first temperature value (TDCDC) in the DC-DC converter and a second temperature value (TDCAC) in the inverter bridge. The method or corresponding system further includes changing the input voltage (UPV) of the inverter with respect to the MPP voltage (UMPP) if at least one of the determined temperature values (TDCDC, TDCAC) exceeds a limit value (Tmax,DCDC, Tmax,DCAC) assigned to the respective temperature values (TDCDC, TDCAC), increasing the input voltage (UPV) with respect to the MPP voltage (UMPP) if an exceedance of the limit value (Tmax,DCDC) for the first temperature value (TDCDC) in the DC-DC converter is determined and/or the MPP voltage (UMPP) lies below a predefined limit voltage (Ulimit), and otherwise reducing the input voltage (UPV) ith respect to the MPP voltage (UMPP).

公开(公告)号：US09444365B2

公开(公告)日：2016-09-13

申请号：US14260741

申请日：2014-04-24

申请人： SMA Solar Technology AG

发明人： Martin Bock ,  Tobias Mueller ,  Thomas Ortmann ,  Alexander Unru

IPC分类号： G05F1/67 ,  H02M7/42 ,  H02M7/44 ,  H02M7/48 ,  H02M7/53 ,  H02M7/537

CPC分类号： H02M7/42 ,  G05F1/67 ,  Y02E10/58

摘要： The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate circuit voltage is repeatedly decreased or increased in one direction to a lower or higher voltage by voltage steps of a specified magnitude. The method is characterized in that an average rate of change of the intermediate circuit voltage in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage. The disclosure further relates to a tracking device designed to perform the tracking method and to an inverter equipped with the tracking device.

摘要翻译： 本公开涉及一种用于光伏系统的变压器，特别是逆变器的跟踪方法。 在该方法中，通过规定幅度的电压阶段，中间电路电压通过一个方向重复地减小或增加到较低或更高的电压。 该方法的特征在于，在两个电压阶段之间的部分时间段内的中间电路电压的平均变化率受到最大平均变化率的限制，最大平均变化率根据中间值的大小而定义 电路电压。 本公开还涉及被设计为执行跟踪方法的跟踪装置以及配备有跟踪装置的逆变器。