公开(公告)号：US07639515B2

公开(公告)日：2009-12-29

申请号：US12222042

申请日：2008-07-31

申请人： Srinivas Ponnaluri ,  Christoph Häderli

发明人： Srinivas Ponnaluri ,  Christoph Häderli

IPC分类号： H02M3/24 ,  H02M5/42 ,  H02M7/44

CPC分类号： H02M7/487 ,  H02M2007/4835

摘要： A switchgear cell is disclosed having a first energy store and a second energy store connected in series therewith, having a first, second, third and fourth power semiconductor switch, which are connected in series, wherein the first, second, third and fourth power semiconductor switch are in each case one drivable bidirectional power semiconductor switch with a controlled unidirectional current-conducting direction. The first power semiconductor switch is connected to the first energy store, and the fourth power semiconductor switch is connected to the second energy store. A third energy store is connected to the junction between the first and the second power semiconductor switch and the junction between the third and the fourth power semiconductor switch.

摘要翻译： 公开了具有与串联连接的第一能量存储器和第二能量存储器的开关柜，其具有串联连接的第一，第二，第三和第四功率半导体开关，其中第一，第二，第三和第四功率半导体 开关在每种情况下都是一个具有受控单向导流方向的可驱动的双向功率半导体开关。 第一功率半导体开关连接到第一能量存储器，并且第四功率半导体开关连接到第二能量存储器。 第三能量存储器连接到第一和第二功率半导体开关之间的结以及第三和第四功率半导体开关之间的结。

公开(公告)号：US07518893B2

公开(公告)日：2009-04-14

申请号：US11826480

申请日：2007-07-16

申请人： Srinivas Ponnaluri ,  Jürgen Steinke

发明人： Srinivas Ponnaluri ,  Jürgen Steinke

IPC分类号： H02M3/06 ,  H02M5/275

CPC分类号： H02M7/53871 ,  H02J7/345 ,  H02M1/12 ,  H02M3/158

摘要： A method for operation of a converter circuit is specified, wherein the converter circuit has a converter unit with a multiplicity of drivable power semiconductor switches and an LCL filter which is connected to each phase connection of the converter unit, in which method the drivable power semiconductor switches are driven by means of a drive signal which is formed from reference voltages. The reference voltages are formed by subtraction of damping voltages from reference-phase connection voltages, with the damping voltages being formed from filter capacitance currents, weighted with a variable damping factor of the LCL filter. An apparatus for carrying out the method is also specified.

摘要翻译： 规定了转换器电路的操作方法，其中转换器电路具有多个可驱动功率半导体开关的转换器单元和连接到转换器单元的每个相位连接的LCL滤波器，其中可驱动功率半导体 开关通过由参考电压形成的驱动信号驱动。 参考电压通过从参考相位连接电压中减去阻尼电压形成，阻尼电压由滤波器电容电流形成，并用LCL滤波器的可变阻尼因子加权。 还指定了用于执行该方法的装置。

公开(公告)号：US20090237964A1

公开(公告)日：2009-09-24

申请号：US12403059

申请日：2009-03-12

申请人： Leonardo Serpa ,  Srinivas Ponnaluri

发明人： Leonardo Serpa ,  Srinivas Ponnaluri

IPC分类号： H02M1/12

CPC分类号： H02M1/12 ,  H02M7/53875 ,  H02P27/08

摘要： A method is disclosed for the operation of a converter circuit, wherein the converter circuit has a converter unit having a multiplicity of actuatable power semiconductor switches and an LCL filter which is connected to each phase connection of the converter unit, in which the actuatable power semiconductor switches are actuated by means of an actuation signal (S) formed from a hysteresis active power value (dP), from a hysteresis reactive power value (dQ) and from a selected flux sector (θn). The hysteresis active power value (dP) is formed from a differential active power value (Pdiff). In addition, the hysteresis reactive power value (dQ) is formed from a differential reactive power value (Qdiff). An apparatus for carrying out the method is also disclosed.

摘要翻译： 公开了一种用于转换器电路的操作的方法，其中转换器电路具有转换器单元，其具有多个可致动功率半导体开关和连接到转换器单元的每个相位连接的LCL滤波器，其中可致动功率半导体 开关通过从滞后有功功率值（dP），滞后无功功率值（dQ）和选定的通量扇区（thetan）形成的致动信号（S）来致动。 滞后有功功率值（dP）由差分有功功率值（Pdiff）形成。 此外，滞后无功功率值（dQ）由差分无功功率值（Qdiff）形成。 还公开了一种用于执行该方法的装置。

公开(公告)号：US20080315859A1

公开(公告)日：2008-12-25

申请号：US12222042

申请日：2008-07-31

申请人： Srinivas Ponnaluri ,  Christoph Haderli

发明人： Srinivas Ponnaluri ,  Christoph Haderli

IPC分类号： G05F1/44

CPC分类号： H02M7/487 ,  H02M2007/4835

摘要： A switchgear cell is disclosed having a first energy store and a second energy store connected in series therewith, having a first, second, third and fourth power semiconductor switch, which are connected in series, wherein the first, second, third and fourth power semiconductor switch are in each case one drivable bidirectional power semiconductor switch with a controlled unidirectional current-conducting direction. The first power semiconductor switch is connected to the first energy store, and the fourth power semiconductor switch is connected to the second energy store. A third energy store is connected to the junction between the first and the second power semiconductor switch and the junction between the third and the fourth power semiconductor switch.

摘要翻译： 公开了具有与串联连接的第一能量存储器和第二能量存储器的开关柜，其具有串联连接的第一，第二，第三和第四功率半导体开关，其中第一，第二，第三和第四功率半导体 开关在每种情况下都是一个具有受控单向导流方向的可驱动的双向功率半导体开关。 第一功率半导体开关连接到第一能量存储器，并且第四功率半导体开关连接到第二能量存储器。 第三能量存储器连接到第一和第二功率半导体开关之间的结以及第三和第四功率半导体开关之间的结。

公开(公告)号：US20080204044A1

公开(公告)日：2008-08-28

申请号：US12076397

申请日：2008-03-18

申请人： Srinivas Ponnaluri ,  Beat Ronner

发明人： Srinivas Ponnaluri ,  Beat Ronner

IPC分类号： G01R27/04

CPC分类号： H02J3/38 ,  H02J2003/388

摘要： An exemplary method comprises the steps of introducing a reactive current reference square wave, detecting load voltage changes at every change in the reactive current reverence wave, and determining whether the detected load voltage changes exceed a predefined islanding detection threshold value, indicating a loss of mains and an islanding operation of the power generator. With the exemplary loss-of-mains detection, islanding can be detected within a shortest period of time, even if the local islands active and reactive load matches exactly the distributed generators active and reactive power generation. So even without a sudden voltage change, unintentional islanding can immediately be detected and control electronics can safely turn of the distributed power generator.

摘要翻译： 一种示例性方法包括以下步骤：引入无功电流参考方波，检测无功电流回波中的每个变化时的负载电压变化，以及确定检测到的负载电压变化是否超过预定义的孤岛检测阈值，指示电力损失 和发电机的孤岛作战。 通过示例的电源损耗检测，即使局部岛有功和无功负载恰好匹配分布式发电机的有功和无功发电，也可以在最短的时间内检测孤岛。 所以即使没有突然的电压变化，也可以立即检测到无意的孤岛，并且控制电子装置可以安全地转动分布式发电机。