公开(公告)号：US08441820B2

公开(公告)日：2013-05-14

申请号：US12893015

申请日：2010-09-29

申请人： Jie Shen ,  Stefan Schroeder ,  Robert Roesner

发明人： Jie Shen ,  Stefan Schroeder ,  Robert Roesner

IPC分类号： H02H7/122 ,  H02M7/537

CPC分类号： H02M7/487 ,  H02M2001/0025

摘要： A control system for a multilevel converter includes a differential mode current regulator, a neutral point (NP) controller and a PWM controller for generating switching pulses for the multilevel converter. The differential mode current regulator generates reference voltage command signals based on a difference between reference current command signals and actual current command signals, and the NP controller determines a modified neutral point current signal in response to a DC link voltage unbalance. The NP controller utilizes the modified neutral point current signal to generate a common mode reference voltage signal. The switching pulses are generated by the PWM controller based on the reference voltage command signals and the common mode reference voltage signal.

摘要翻译： 用于多电平转换器的控制系统包括差模电流调节器，中性点（NP）控制器和用于产生用于多电平转换器的开关脉冲的PWM控制器。 差分电流调节器基于参考电流指令信号和实际电流指令信号之间的差产生参考电压指令信号，并且NP控制器响应于直流链路电压不平衡来确定修正的中性点电流信号。 NP控制器利用修正的中性点电流信号产生共模参考电压信号。 开关脉冲由PWM控制器基于参考电压指令信号和共模参考电压信号产生。

公开(公告)号：US20120026769A1

公开(公告)日：2012-02-02

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： H02M7/48

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：US20110141786A1

公开(公告)日：2011-06-16

申请号：US12893015

申请日：2010-09-29

申请人： Jie Shen ,  Stefan Schroeder ,  Robert Roesner

发明人： Jie Shen ,  Stefan Schroeder ,  Robert Roesner

IPC分类号： H02M7/537

CPC分类号： H02M7/487 ,  H02M2001/0025

摘要： A control system for a multilevel converter includes a differential mode current regulator, a neutral point (NP) controller and a PWM controller for generating switching pulses for the multilevel converter. The differential mode current regulator generates reference voltage command signals based on a difference between reference current command signals and actual current command signals, and the NP controller determines a modified neutral point current signal in response to a DC link voltage unbalance. The NP controller utilizes the modified neutral point current signal to generate a common mode reference voltage signal. The switching pulses are generated by the PWM controller based on the reference voltage command signals and the common mode reference voltage signal.

摘要翻译： 用于多电平转换器的控制系统包括差模电流调节器，中性点（NP）控制器和用于产生用于多电平转换器的开关脉冲的PWM控制器。 差分电流调节器基于参考电流指令信号和实际电流指令信号之间的差产生参考电压指令信号，并且NP控制器响应于直流链路电压不平衡来确定修正的中性点电流信号。 NP控制器利用修正的中性点电流信号产生共模参考电压信号。 开关脉冲由PWM控制器基于参考电压指令信号和共模参考电压信号产生。

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：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：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：US08411474B2

公开(公告)日：2013-04-02

申请号：US12770800

申请日：2010-04-30

申请人： Robert Roesner ,  Stefan Schroeder

发明人： Robert Roesner ,  Stefan Schroeder

IPC分类号： H02H7/122

CPC分类号： H02M7/487 ,  H02M1/32

摘要： A three level neutral point clamped (NPC) converter includes a plurality of phase legs each having at least two inner switching devices, at least two outer switching devices, at least two clamping diodes, and a protection circuit. An inner component failure sensing circuit is employed in the protection circuit to detect a failure condition in any of the inner switching devices or clamping diodes. The protection circuit further includes a gating signal generation circuit configured to generate a turn ON signal for a respective outer switching device that is adjacent to the failed inner switching device or the clamping diode.

摘要翻译： 三级中性点钳位（NPC）转换器包括多个相位支路，每个相位支路具有至少两个内部开关器件，至少两个外部开关器件，至少两个钳位二极管和保护电路。 在保护电路中采用内部故障检测电路来检测任何内部开关器件或钳位二极管中的故障状况。 该保护电路还包括门控信号产生电路，其被配置为产生与故障内部开关器件或钳位二极管相邻的相应外部开关器件的导通信号。

公开(公告)号：US20100148909A1

公开(公告)日：2010-06-17

申请号：US12334572

申请日：2008-12-15

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

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

IPC分类号： H01F5/00

CPC分类号： H01F27/2804 ,  H01F27/16 ,  H01F27/303 ,  H01F27/322 ,  Y10T29/4902

摘要： A substrate layer for use in an inductor is provided. The substrate layer comprises traces disposed on a first side of the substrate layer, wherein the traces are configured to facilitate conduction of current in a winding of the inductor, a sealing layer disposed on a second side of the substrate layer, wherein the sealing layer is configured to provide a sealing border for an electrically isolated cooling channel and an interconnect foil disposed on the second side of the substrate layer, wherein the interconnect foil is configured to facilitate operationally coupling the substrate layer to a second substrate layer. Further, the first substrate layer and the second substrate layer may be operationally coupled to form a winding for use in an inductor with an electrically isolated cooling channel in between.

摘要翻译： 提供了一种用于电感器的衬底层。 衬底层包括布置在衬底层的第一侧上的迹线，其中迹线被配置为促进电感器的绕组中的电流传导，设置在衬底层的第二侧上的密封层，其中密封层是 被配置为为电隔离的冷却通道和布置在所述基底层的第二侧上的互连箔提供密封边界，其中所述互连箔被配置为有助于将所述基底层与第二基底层耦合。 此外，第一衬底层和第二衬底层可以可操作地耦合以形成用于电感器的绕组，其间具有电隔离的冷却通道。

公开(公告)号：US20110175662A1

公开(公告)日：2011-07-21

申请号：US12689410

申请日：2010-01-19

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

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

IPC分类号： H03L5/00

CPC分类号： H01L31/02021 ,  H02J3/383 ,  H02M1/36 ,  H02M7/797 ,  H02S40/32 ,  Y02E10/563

摘要： A method to clamp an open circuit voltage in a photovoltaic module is proposed. The method include coupling a load resistor across an inverter module, initiating the inverter module and loading the inverter module via the load resistor, and coupling the loaded inverter module to the photovoltaic module. The method further include dissipating power via the load resistor to clamp the open circuit voltage of the photovoltaic module, synchronizing an output voltage of the inverter module with a voltage of a grid and then coupling the inverter module to the grid and de-coupling the load resistor across the inverter module.

摘要翻译： 提出了一种在光伏模块中钳位开路电压的方法。 该方法包括将负载电阻器耦合到逆变器模块上，启动逆变器模块并通过负载电阻器加载逆变器模块，并将负载的逆变器模块耦合到光伏模块。 该方法还包括经由负载电阻器耗散功率以钳位光伏模块的开路电压，使逆变器模块的输出电压与电网的电压同步，然后将逆变器模块耦合到电网并使负载解耦 电阻穿过逆变器模块。

公开(公告)号：US08144490B2

公开(公告)日：2012-03-27

申请号：US12615566

申请日：2009-11-10

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

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

IPC分类号： H02M7/487

CPC分类号： H02M7/487 ,  H02M7/5395 ,  Y10S323/906

摘要： A method of operating a three level converter includes controlling the output voltage of the converter when a DC link voltage of the three level converter is lower than one-half of a rated DC link voltage of the converter by, for each leg of the converter, alternately connecting an output terminal of the leg to the positive terminal or the negative terminal of the DC link. When the DC link voltage is at least one-half of the rated DC link voltage, the method includes controlling the output voltage of the converter by, for each leg, selectively connecting the output terminal of the converter to the positive terminal, the negative terminal, or a mid-point of the DC link.

摘要翻译： 一种操作三电平转换器的方法包括：当三电平转换器的直流母线电压低于转换器的额定直流母线电压的一半时，通过转换器的每个支路来控制转换器的输出电压， 交替地将脚的输出端连接到DC链路的正极或负极。 当直流母线电压至少为额定直流母线电压的一半时，该方法包括通过对每个支路选择性地将转换器的输出端连接到正极端子来控制转换器的输出电压，负极端子 ，或DC链路的中点。