-
公开(公告)号：US20090045782A1
公开(公告)日：2009-02-19
申请号：US11839929
申请日：2007-08-16
申请人： Rajib Datta , Allen Michael Ritter , Haiqing Weng , Luis Jose Garces , Kunlun Chen , Haitao Zhang
发明人： Rajib Datta , Allen Michael Ritter , Haiqing Weng , Luis Jose Garces , Kunlun Chen , Haitao Zhang
摘要： A power conversion system includes two three-level converters, and a phase shifted transformer coupled to the converters.
摘要翻译： 电力转换系统包括两个三电平转换器和耦合到转换器的相移变压器。
-
公开(公告)号：US07327134B1
公开(公告)日：2008-02-05
申请号：US11460064
申请日：2006-07-26
申请人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
发明人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
IPC分类号： G01R15/18
CPC分类号： H01F27/42 , H01F27/34 , H01F2038/006 , H02M7/49
摘要： A method to balance transformer flux among a plurality of transformers is disclosed. The plurality of transformers is connected to a plurality of converters, each transformer having an associated converter. The method comprises determining a reference flux value, measuring an actual flux value for each transformer, and developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value. In response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, the method proceeds by generating a plurality of switching signals to reduce each of the variance values by making available the plurality of switching signals to each of the associated plurality of converters.
摘要翻译： 公开了一种在多个变压器之间平衡变压器通量的方法。 多个变压器连接到多个转换器，每个变压器具有相关联的转换器。 该方法包括确定参考通量值，测量每个变压器的实际通量值，以及相对于参考通量值和每个实际通量值之间的多个方差值来开发多个电压指令信号。 响应于在与多个转换器进行信号通信的调制器处接收的电压指令信号，该方法通过产生多个切换信号来进行，以通过将多个切换信号提供给每个 相关联的多个转换器。
-
公开(公告)号：US20080024114A1
公开(公告)日：2008-01-31
申请号：US11460064
申请日：2006-07-26
申请人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
发明人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
IPC分类号： G01R15/18
CPC分类号： H01F27/42 , H01F27/34 , H01F2038/006 , H02M7/49
摘要： A method to balance transformer flux among a plurality of transformers is disclosed. The plurality of transformers is connected to a plurality of converters, each transformer having an associated converter. The method comprises determining a reference flux value, measuring an actual flux value for each transformer, and developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value. In response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, the method proceeds by generating a plurality of switching signals to reduce each of the variance values by making available the plurality of switching signals to each of the associated plurality of converters.
摘要翻译： 公开了一种在多个变压器之间平衡变压器通量的方法。 多个变压器连接到多个转换器，每个变压器具有相关联的转换器。 该方法包括确定参考通量值，测量每个变压器的实际通量值，以及相对于参考通量值和每个实际通量值之间的多个方差值来开发多个电压指令信号。 响应于在与多个转换器进行信号通信的调制器处接收的电压指令信号，该方法通过产生多个切换信号来进行，以通过将多个切换信号提供给每个 相关联的多个转换器。
-
公开(公告)号：US07359223B2
公开(公告)日：2008-04-15
申请号：US11095227
申请日：2005-03-30
IPC分类号： H02M7/00
CPC分类号： H02M7/49
摘要： A power converter system for supplying an output voltage is provided. The power converter system is adapted to operate in a normal mode and a fault mode. The system comprises a plurality of bridges and a plurality of transformers. The system further comprises a plurality of dc link capacitors, each coupled across a corresponding bridge. The system also includes a controller adapted for, during the normal mode, switching each bridge with a respective normal phase shift. During the fault mode, the controller is adapted for switching each of the remaining ones of the bridges with a respective adjusted phase shift to generate the output voltage. During the fault mode, at least one of the plurality of bridges is bypassed.
摘要翻译： 提供了用于提供输出电压的功率转换器系统。 电源转换器系统适用于正常模式和故障模式。 该系统包括多个桥和多个变压器。 该系统还包括多个直流链路电容器，每个直流链路电容器跨越相应的桥接器耦合。 该系统还包括适于在正常模式期间用相应的正相移切换每个桥的控制器。 在故障模式期间，控制器适于用相应调整的相移来切换桥接中的每一个，以产生输出电压。 在故障模式期间，绕过多个桥中的至少一个。
-
公开(公告)号：US20060227578A1
公开(公告)日：2006-10-12
申请号：US11095227
申请日：2005-03-30
申请人： Rajib Datta , Kunlun Chen , Haiqing Weng , Ravisekhar Raju
发明人： Rajib Datta , Kunlun Chen , Haiqing Weng , Ravisekhar Raju
IPC分类号： H02J1/10
CPC分类号： H02M7/49
摘要： A power converter system for supplying an output voltage is provided. The power converter system is adapted to operate in a normal mode and a fault mode. The system comprises a plurality of bridges and a plurality of transformers. The system further comprises a plurality of dc link capacitors, each coupled across a corresponding bridge. The system also includes a controller adapted for, during the normal mode, switching each bridge with a respective normal phase shift. During the fault mode, the controller is adapted for switching each of the remaining ones of the bridges with a respective adjusted phase shift to generate the output voltage. During the fault mode, at least one of the plurality of bridges is bypassed.
摘要翻译： 提供了用于提供输出电压的功率转换器系统。 电源转换器系统适用于正常模式和故障模式。 该系统包括多个桥和多个变压器。 该系统还包括多个直流链路电容器，每个直流链路电容器跨越相应的桥接器耦合。 该系统还包括适于在正常模式期间用相应的正相移切换每个桥的控制器。 在故障模式期间，控制器适于用相应调整的相移来切换桥接中的每一个，以产生输出电压。 在故障模式期间，绕过多个桥中的至少一个。
-
公开(公告)号：US07633775B2
公开(公告)日：2009-12-15
申请号：US11010147
申请日：2004-12-10
IPC分类号： H02M1/12
CPC分类号： H02M7/49
摘要： A power generation system for supplying a resultant output voltage is provided. The system comprises a power converter system. The power converter system comprises at least two power converter bridges, each configured for switching at a low frequency and generating a corresponding converter output voltage including a fundamental voltage component and harmonic components, and at least two power converter transformers. Each power converter bridge is coupled to a primary winding of a corresponding power converter transformer and a secondary winding of one power converter transformer is coupled to a secondary winding of a second power converter transformer. The resultant output voltage comprises a sum of the fundamental voltage components of each converter output voltage.
摘要翻译： 提供了用于提供合成输出电压的发电系统。 该系统包括功率转换器系统。 功率转换器系统包括至少两个功率转换器桥，每个功率转换器桥被配置为以低频切换并产生包括基波电压分量和谐波分量的相应的转换器输出电压，以及至少两个功率转换器变压器。 每个功率转换器桥耦合到相应的功率转换器变压器的初级绕组，并且一个功率变换器变压器的次级绕组耦合到第二功率变换器变压器的次级绕组。 所得到的输出电压包括每个转换器输出电压的基波电压分量之和。
-
7.发明授权Power converter methods and apparatus for variable speed high power machines 有权用于变速高功率机器的功率转换器方法和装置公开(公告)号：US07324360B2
公开(公告)日：2008-01-29
申请号：US11251727
申请日：2005-10-17
申请人： Allen Michel Ritter , Richard S. Zhang , Luis Jose Garces , Rajib Datta , Ravisekhar Nadimpalli Raju , Mark E. Shepard
发明人： Allen Michel Ritter , Richard S. Zhang , Luis Jose Garces , Rajib Datta , Ravisekhar Nadimpalli Raju , Mark E. Shepard
IPC分类号： H02M7/00
摘要： Methods and apparatus for converting power from a power source are described. In one example embodiment, the method includes controlling multiple transformer and switchgear units coupled to a power source, and controlling multiple converter units connected in parallel. Each converter unit is coupled to a respective one of the transformer and switchgear units to form an individual thread. The transformer and switchgear unit and power converters are controlled so that the carrier waveforms for each individual thread are interleaved between each other over a carrier cycle.
摘要翻译： 描述用于从电源转换功率的方法和装置。 在一个示例实施例中，该方法包括控制耦合到电源的多个变压器和开关设备单元，以及控制并联连接的多个转换器单元。 每个转换器单元耦合到变压器和开关设备单元中的相应一个以形成单个螺纹。 控制变压器和开关设备单元和功率转换器，使得每个单独线程的载波波形在载波周期之间彼此交错。
-
8.发明授权Converter topology and methods for interfacing an electrical machine to electrical power grid 失效用于将电机与电力电网连接的转换器拓扑和方法公开(公告)号：US07532490B2
公开(公告)日：2009-05-12
申请号：US11464241
申请日：2006-08-14
摘要： A power converter for coupling an electrical machine to an electrical grid includes a machine side converter and a grid side converter, each, side having a plurality of corresponding stages for converting a three-phase electrical signal of the electrical machine to a three-phase electrical signal of the electrical grid. The machine side converter includes a plurality of single-phase bridges coupled in series. The grid side converter includes a plurality of three-phase bridges. Each three-phase bridge corresponds to one of the single-phase bridges of the machine side converter. Each three-phase bridge is coupled to the primary windings of a corresponding transformer. The secondary windings of each corresponding transformer is phase-shifted from its primary windings and is coupled to secondary windings of another respective transformer, thus providing for coupling of the three-phase bridges in a series.
摘要翻译： 用于将电机耦合到电网的功率转换器包括机器侧转换器和电网侧转换器，每个侧面具有多个对应级，用于将电机的三相电信号转换成三相电 电网信号。 机器侧转换器包括串联耦合的多个单相桥。 电网侧转换器包括多个三相桥。 每个三相桥对应于机器侧转换器的单相桥之一。 每个三相桥耦合到相应变压器的初级绕组。 每个相应变压器的次级绕组从其初级绕组相移并耦合到另一个相应变压器的次级绕组，从而提供串联的三相桥的耦合。
-
9.发明申请CONVERTER TOPOLOGY AND METHODS FOR INTERFACING AN ELECTRICAL MACHINE TO ELECTRICAL POWER GRID 失效用于将电机连接到电力网的转换器拓扑学和方法公开(公告)号：US20080037190A1
公开(公告)日：2008-02-14
申请号：US11464241
申请日：2006-08-14
IPC分类号： H01H73/00
摘要： A power converter for coupling an electrical machine to an electrical grid, the power converter including a machine side converter and a grid side converter, each side having a plurality of corresponding stages for converting a three-phase electrical signal of the electrical machine to a three-phase electrical signal of the electrical grid; wherein the machine side converter includes a plurality of single-phase bridges coupled in a series and has at least one coupling for coupling with the electrical machine; wherein the grid side converter includes a plurality of three-phase bridges, each three-phase bridge corresponding to one of the single-phase bridges of the machine side converter; wherein each three-phase bridge is coupled to the primary windings of a respective transformer while the secondary windings of the respective transformer are phase-shifted from the primary windings thereof and are coupled to secondary windings of another respective transformer, thus providing for coupling of the plurality of three-phase bridges in a series, wherein a transformer at the end of the series provides a coupling to at least the electrical grid; and wherein each single-phase bridge of the machine side converter is coupled to the corresponding three-phase bridge of the grid side converter by a direct current (DC) link. A method for making the power converter and a method for using the power converter are also provided.
摘要翻译： 一种用于将电机耦合到电网的功率转换器，所述功率转换器包括机器侧转换器和电网侧转换器，每侧具有多个对应级，用于将所述电机的三相电信号转换为三 电网的相电信号; 其中所述机器侧转换器包括串联耦合的多个单相桥并且具有用于与所述电机耦合的至少一个联接器; 其中所述电网侧转换器包括多个三相桥，每个三相桥对应于所述机侧转换器的单相桥之一; 其中每个三相桥耦合到相应变压器的初级绕组，而相应变压器的次级绕组从其初级绕组相移并耦合到另一个相应变压器的次级绕组，从而提供 多个串联的三相桥，其中串联端的变压器提供至少电网的耦合; 并且其中机器侧转换器的每个单相桥通过直流（DC）链路耦合到电网侧转换器的对应的三相桥。 还提供了一种用于制造功率转换器的方法和使用该功率转换器的方法。
-
公开(公告)号：US20080304300A1
公开(公告)日：2008-12-11
申请号：US11810837
申请日：2007-06-06
申请人： Ravisekhar Nadimpalli Raju , Richard S. Zhang , Rajib Datta , Allen Michael Ritter , Ljubisa Dragoljub Stevanovic
发明人： Ravisekhar Nadimpalli Raju , Richard S. Zhang , Rajib Datta , Allen Michael Ritter , Ljubisa Dragoljub Stevanovic
CPC分类号： H02M7/217 , H02M2001/0074 , H02M2001/009 , Y02B70/1483
摘要： A power conversion system has a three-phase AC input, where each AC input phase is linked to a string of cascaded single-phase AC-DC converters placed in series with a three-phase AC-DC converter. Each single-phase AC-DC converter in one embodiment includes a silicon carbide (SiC) pulse width modulated MOSFET H-bridge that placed in series with the three-phase AC-DC converter that includes a silicon (Si) SCR bridge. The single-phase AC-DC converters and the three-phase AC-DC converter together in one embodiment include a mixed silicon-carbide (SiC) and silicon (Si) device topology.
摘要翻译： 电力转换系统具有三相AC输入，其中每个AC输入相位与串联的三相AC-DC转换器串联的级联单相AC-DC转换器串联。 在一个实施例中，每个单相AC-DC转换器包括与包括硅（Si）SCR桥的三相AC-DC转换器串联放置的碳化硅（SiC）脉宽调制MOSFET H桥。 在一个实施例中，单相AC-DC转换器和三相AC-DC转换器一起包括混合碳化硅（SiC）和硅（Si）器件拓扑。
-
-
-
-
-
-
-
-
-
搜索结果
41 条记录 (耗时 0.033 秒)
