公开(公告)号：US08395919B2

公开(公告)日：2013-03-12

申请号：US12845802

申请日：2010-07-29

申请人： Stefan Schroeder ,  Jie Shen ,  Said Farouk Said El-Barbari ,  Robert Roesner

发明人： Stefan Schroeder ,  Jie Shen ,  Said Farouk Said El-Barbari ,  Robert Roesner

IPC分类号： H02M7/537

CPC分类号： H02J3/383 ,  H02M3/1584 ,  H02M7/48 ,  Y02E10/563 ,  Y02E10/58

摘要： A power inverter system includes a DC to AC inverter configured to convert DC voltage from a DC power source to AC voltage. A DC link couples the DC power source and the inverter. An inverter pre-charger operates to pre-charge the inverter to achieve a desired DC link voltage prior to connecting the power inverter system to an AC power grid. A phased lock loop synchronizes the pre-charged inverter to the AC power grid prior to connecting the power inverter system to the AC power grid. The pre-charged inverter regulates the DC link voltage to about the minimum voltage level that allows control of AC grid currents via the inverter subsequent to connecting the power inverter system to the AC grid. The inverter operates in a maximum power point tracking control mode only subsequent to a first voltage transient caused by connecting the DC power source to energize the power inverter system.

摘要翻译： 电力逆变器系统包括被配置为将直流电压从直流电源转换成交流电压的直流到交流逆变器。 直流母线连接直流电源和逆变器。 在将电力逆变器系统连接到交流电网之前，逆变器预充电器用于对逆变器预充电以实现期望的直流链路电压。 在将电力逆变器系统连接到交流电网之前，相位锁定环将预充电的逆变器同步到交流电网。 预充电逆变器将直流母线电压调节到大约最小电压电平，允许在将电力逆变器系统连接到交流电网之后通过变频器控制交流电网电流。 只有在连接直流电源才能使功率逆变器系统通电的第一次电压瞬变之后，变频器才能工作在最大功率点跟踪控制模式。

公开(公告)号：US20120133389A1

公开(公告)日：2012-05-31

申请号：US12956785

申请日：2010-11-30

申请人： Stefan Schroeder ,  Cyrus David Harbourt ,  Jie Shen

发明人： Stefan Schroeder ,  Cyrus David Harbourt ,  Jie Shen

IPC分类号： G01R31/40

CPC分类号： G01R31/42

摘要： A method of assembling a testing apparatus for a full-power converter assembly includes coupling an electric power supply apparatus to an electric power grid. The method also includes coupling a direct current (DC) generation apparatus to the electric power supply apparatus. The method further includes coupling an electric power grid simulation device to the DC generation apparatus. The method also includes coupling a full-power converter assembly test connection to the electric power grid simulation device.

摘要翻译： 一种组装全功率转换器组件的测试装置的方法包括将电力供应装置耦合到电力网。 该方法还包括将直流（DC）产生装置耦合到电力供应装置。 该方法还包括将电网模拟装置耦合到DC发生装置。 该方法还包括将全功率转换器组件测试连接耦合到电力网模拟设备。

公开(公告)号：US20110115532A1

公开(公告)日：2011-05-19

申请号：US12618810

申请日：2009-11-16

申请人： Robert Roesner ,  Stefan Schroeder ,  Jie Shen

发明人： Robert Roesner ,  Stefan Schroeder ,  Jie Shen

IPC分类号： H03K4/06 ,  H03K17/00

CPC分类号： H02M7/487 ,  H02M7/003 ,  H02M2001/0048 ,  H02M2001/007 ,  Y02B70/1491 ,  Y10T307/76

摘要： A method of operating a neutral point clamped (NPC) three level converter is provided. The NPC converter includes at least two legs, each leg comprising first and second top switches connected in series at a first mid point. The converter further includes first and second bottom switches connected in series at a second mid point, and first and second middle switches connected in series at a third mid point therebetween. The first top and second bottom switches are connected in series at a DC link and the first and the second middle switches are connected between the first and the second mid points. Each of the top, bottom and middle switches has an antiparallel diode thereacross. The method includes alternately switching the first and second top switches to ON state when the first middle switch is in ON state and the second middle switch is in OFF state. The method also includes alternately switching the first and the second bottom switches to ON state when the first middle switch is in OFF state and the second middle switch is in ON state.

摘要翻译： 提供了一种操作中性点钳位（NPC）三电平转换器的方法。 NPC转换器包括至少两个腿，每个腿包括在第一中点处串联连接的第一和第二顶部开关。 转换器还包括在第二中点串联连接的第一和第二底部开关，以及在它们之间的第三个中间点串联连接的第一和第二中间开关。 第一顶部和第二个底部开关在DC链路处串联连接，第一和第二中间开关连接在第一和第二中间点之间。 顶部，底部和中部开关中的每一个都具有反平行二极管。 该方法包括当第一中间开关处于导通状态并且第二中间开关处于断开状态时交替地将第一和第二顶部开关切换到接通状态。 该方法还包括当第一中间开关处于断开状态并且第二中间开关处于接通状态时交替地将第一和第二底部开关切换到接通状态。

公开(公告)号：US07410504B2

公开(公告)日：2008-08-12

申请号：US10543495

申请日：2004-01-21

申请人： Stephan Hueffer ,  Oliver Reese ,  Walter Gramlich ,  Stefan Schroeder ,  Guenter Scherr ,  Volker Bach

发明人： Stephan Hueffer ,  Oliver Reese ,  Walter Gramlich ,  Stefan Schroeder ,  Guenter Scherr ,  Volker Bach

IPC分类号： C14C3/18 ,  C07D309/30

CPC分类号： C07D307/32 ,  C07D309/30 ,  C14C3/18 ,  C14C9/02

摘要： Adducts are obtained by reacting carbonyl compounds of the formula I where R1 and R2 are as defined, with cyclic compounds of the formula II where X is selected from oxygen, sulfur and N—R8, R3-R8 are as defined, and n is an integer from 1 to 4, which adducts are useful as tanning agents and preservatives.

摘要翻译： 通过使式I的羰基化合物（其中R 1，R 2和R 2）定义与式II的环状化合物反应，其中X选自氧，硫 和NR 8，R 3 -R 8如上所定义，n为1至4的整数，该加合物可用作鞣制 代理和防腐剂。

公开(公告)号：US20060101584A1

公开(公告)日：2006-05-18

申请号：US10524047

申请日：2003-08-14

申请人： Stephan Hueffer ,  Stefan Schroeder ,  Einhard Wagner ,  Thorsten Radler ,  Karl Vill

发明人： Stephan Hueffer ,  Stefan Schroeder ,  Einhard Wagner ,  Thorsten Radler ,  Karl Vill

IPC分类号： C14C3/00

CPC分类号： C14C3/16 ,  C14C3/28

摘要： A formulation for use in chrome-free or chrome tanning is proposed, comprising a clay mineral which, after vigorous stirring for 30 minutes in water at 50° C., has a number average particle diameter of less than 2 μm or a bimodal size distribution with a first, finely divided fraction whose number average particle diameter is less than 0.5 μm and a second, coarser fraction whose number average particle diameter is less than 5 μm, determined in each case by the method according to ISO 13320-1, by combined laser light diffraction and light scattering, the amount of the first, finely divided fraction being from 10 to 90% by weight, and one or more substances from one or more of the following groups: organic polymers, aldehyde tanning agents, sulfone tanning agents, resin tanning agents, phenol tanning agents, fatliquoring agents, vegetable tanning agents, dyes and pigments.

摘要翻译： 提出了用于无铬或铬鞣制剂的制剂，其包含粘土矿物，其在50℃下在水中剧烈搅拌30分钟后具有小于2μm的数均粒径或双峰尺寸分布 具有数均粒径小于0.5μm的第一细碎部分和数均粒径小于5μm的第二粗纱部分，通过组合的方法按照ISO 13320-1的方法确定 激光衍射和光散射，第一细分的份数为10至90重量％，以及一种或多种下列一种或多种物质：​​有机聚合物，醛鞣剂，砜鞣剂， 树脂鞣剂，苯酚鞣剂，加脂剂，植物鞣剂，染料和颜料。

公开(公告)号：US10175066B2

公开(公告)日：2019-01-08

申请号：US13338598

申请日：2011-12-28

申请人： Martin Deitmerg ,  Marco Rutkowski ,  Stefan Garneyer ,  Christian Schirp ,  Oliver Maier ,  Klaus Hirschfeld ,  Bernd vom Hedt ,  Sven Kober ,  Holger Hasselmann ,  Stefan Schroeder

发明人： Martin Deitmerg ,  Marco Rutkowski ,  Stefan Garneyer ,  Christian Schirp ,  Oliver Maier ,  Klaus Hirschfeld ,  Bernd vom Hedt ,  Sven Kober ,  Holger Hasselmann ,  Stefan Schroeder

IPC分类号： G01B7/30 ,  G01D5/245 ,  B62D15/02

摘要： A system for detecting the absolute rotational angle of a shaft rotatable more than one revolution includes a drive wheel connected to the shaft to rotate therewith. The drive wheel includes measurement sectors adjacent to one another in a circumferential direction. First and second driven wheels are engaged to the drive wheel. First and second sensors monitor rotational positions of the driven wheels to thereby detect an absolute rotational angle of the shaft. A third sensor monitors a relative angular position of the shaft in relation to a detected one of the measurement sectors to thereby detect the relative angular position of the shaft within one revolution of the shaft. The detected absolute rotational angle of the shaft is refined with the detected relative angular position of the shaft to thereby generate the absolute rotational angle of the shaft with more precision.

公开(公告)号：US20130258724A1

公开(公告)日：2013-10-03

申请号：US13432256

申请日：2012-03-28

申请人： Jie Shen ,  Stefan Schroeder ,  Zhihui Yuan

发明人： Jie Shen ,  Stefan Schroeder ,  Zhihui Yuan

IPC分类号： H02J3/36

CPC分类号： H02J3/36 ,  H02J1/08 ,  H02J1/102 ,  H02J3/06 ,  H02J3/386 ,  H02J3/48 ,  Y02E10/763 ,  Y02E60/60 ,  Y02P80/14

摘要： A high voltage direct current system is presented. The system includes at least three high voltage direct current terminals. Furthermore, the system include at least two transmission lines configured to operatively couple the at least three high voltage direct current terminals. Moreover, the system includes a power flow control device operatively coupled to at least one end of one or more of the at least two transmission lines and at least one of a local grid and another power flow control device. Methods to perform the method for power flow control are also presented.

摘要翻译： 介绍了高压直流系统。 该系统包括至少三个高压直流端子。 此外，该系统包括配置成可操作地耦合至少三个高压直流端子的至少两条传输线。 此外，该系统包括功率流控制装置，其可操作地耦合到所述至少两条传输线中的一个或多个的至少一端以及局部电网和另一电力流控制装置中的至少一个。 还介绍了执行电力潮流控制方法的方法。

公开(公告)号：US08359009B2

公开(公告)日：2013-01-22

申请号：US12739202

申请日：2008-06-06

申请人： Stefan Schroeder ,  Jens Weber

发明人： Stefan Schroeder ,  Jens Weber

IPC分类号： H04M1/66

CPC分类号： G06F21/86 ,  G08B13/00 ,  G08B25/002

摘要： Authorized or unauthorized opening of access to equipment of a telecommunications network in a control center is detected on the basis of alarm messages. The telecommunication network is a mobile radio network or a hard-wired network. The control center monitors the access equipment and transmits alarm messages as a result of the access equipment being opened. A message is first transmitted by a signaling device to a signaling server before the access equipment is opened. Then the server, after receiving the message from the signaling device, generates an alarm-suppression information item. This alarm-suppression information item is evaluated in the control center, and, whenever an alarm message is received, this message is compared with the alarm-suppression information items and the alarm message is filtered in the event of a positive association.

摘要翻译： 根据报警信息检测到控制中心对电信网络设备的授权或未经授权的打开。 电信网络是移动无线电网络或硬连线网络。 由于接入设备被打开，控制中心监控接入设备并发送报警信息。 在接入设备打开之前，信令首先由信令设备发送到信令服务器。 然后，服务器从信令设备收到消息后，生成告警抑制信息项。 该控制中心对该告警抑制信息项进行评估，每当接收到告警信息时，将该消息与告警抑制信息项进行比较，并在正向关联的情况下对告警消息进行过滤。

公开(公告)号：US08228695B2

公开(公告)日：2012-07-24

申请号：US12618810

申请日：2009-11-16

申请人： Robert Roesner ,  Stefan Schroeder ,  Jie Shen

发明人： Robert Roesner ,  Stefan Schroeder ,  Jie Shen

IPC分类号： H02M7/122

CPC分类号： H02M7/487 ,  H02M7/003 ,  H02M2001/0048 ,  H02M2001/007 ,  Y02B70/1491 ,  Y10T307/76

摘要： A method of operating a neutral point clamped (NPC) three level converter is provided. The NPC converter includes at least two legs, each leg comprising first and second top switches connected in series at a first mid point. The converter further includes first and second bottom switches connected in series at a second mid point, and first and second middle switches connected in series at a third mid point therebetween. The first top and second bottom switches are connected in series at a DC link and the first and the second middle switches are connected between the first and the second mid points. Each of the top, bottom and middle switches has an antiparallel diode thereacross. The method includes alternately switching the first and second top switches to ON state when the first middle switch is in ON state and the second middle switch is in OFF state. The method also includes alternately switching the first and the second bottom switches to ON state when the first middle switch is in OFF state and the second middle switch is in ON state.

摘要翻译： 提供了一种操作中性点钳位（NPC）三电平转换器的方法。 NPC转换器包括至少两个腿，每个腿包括在第一中点处串联连接的第一和第二顶部开关。 转换器还包括在第二中点串联连接的第一和第二底部开关，以及在它们之间的第三个中间点串联连接的第一和第二中间开关。 第一顶部和第二个底部开关在DC链路处串联连接，第一和第二中间开关连接在第一和第二中间点之间。 顶部，底部和中部开关中的每一个都具有反平行二极管。 该方法包括当第一中间开关处于导通状态并且第二中间开关处于断开状态时交替地将第一和第二顶部开关切换到接通状态。 该方法还包括当第一中间开关处于断开状态并且第二中间开关处于接通状态时交替地将第一和第二底部开关切换到接通状态。

公开(公告)号：US20120161518A1

公开(公告)日：2012-06-28

申请号：US12976106

申请日：2010-12-22

申请人： Stefan Schroeder ,  Christof Martin Sihler ,  Sebastian Pedro Rosado

发明人： Stefan Schroeder ,  Christof Martin Sihler ,  Sebastian Pedro Rosado

IPC分类号： H02J1/06

CPC分类号： H02J13/0096 ,  H02J3/01 ,  H02J3/36 ,  H02J11/00 ,  Y02E60/60 ,  Y10T307/445

摘要： A method and system for a control power supply system is provided. The control power supply system includes a first conductor configured to carry a direct current (DC) electrical current from a source to a load, a second conductor configured to carry the DC electrical current from the load to the source, a electrical device electrically coupled in series with at least one of the first and second conductor. The electrical device is configured to fail in a shorted condition such that failure of the electrical device maintains a direct current (DC) ring bus including the first and second conductor. The control power supply system also includes a control power circuit electrically coupled in parallel with at least a portion of the electrical device such that a DC voltage across at least a portion of the electrical device provides a DC voltage supply to the control power circuit.

摘要翻译： 提供了一种用于控制电源系统的方法和系统。 控制电源系统包括被配置为承载来自源到负载的直流（DC）电流的第一导体，被配置为将DC电流从负载承载到源的第二导体，电耦合到 与第一和第二导体中的至少一个导体串联。 电气设备被配置为在短路状态下故障，使得电气设备的故障维持包括第一和第二导体的直流（DC）环形总线。 控制电源系统还包括与电气设备的至少一部分并联电耦合的控制电源电路，使得跨越电气设备的至少一部分的DC电压向控制电源电路提供DC电压供应。