专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060227578A1 Power converter system and method 有权
标题翻译：电源转换器系统及方法
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。

2. 发明授权

US07532490B2 Converter topology and methods for interfacing an electrical machine to electrical power grid 失效
标题翻译：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
申请人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
发明人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
IPC分类号： H02J3/00 , H02M5/40
CPC分类号： H02M5/271 , H02M5/297
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。

3. 发明申请

US20080037190A1 CONVERTER TOPOLOGY AND METHODS FOR INTERFACING AN ELECTRICAL MACHINE TO ELECTRICAL POWER GRID 失效
标题翻译：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
申请人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
发明人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
IPC分类号： H01H73/00
CPC分类号： H02M5/271 , H02M5/297
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。

4. 发明申请

US20070086221A1 Power converter methods and apparatus for variable speed high power machines 有权
标题翻译：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：US20070086221A1
公开(公告)日：2007-04-19
申请号：US11251727
申请日：2005-10-17
申请人： Allen Ritter , Richard Zhang , Luis Garces , Rajib Datta , Ravisekhar Raju , Mark Shepard
发明人： Allen Ritter , Richard Zhang , Luis Garces , Rajib Datta , Ravisekhar Raju , Mark Shepard
IPC分类号： H02J3/00
CPC分类号： H02M5/272 , H02M5/271
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。

5. 发明授权

US11811301B1 AC solid-state transformer with DC-DC converters 有权
公开(公告)号：US11811301B1
公开(公告)日：2023-11-07
申请号：US18224541
申请日：2023-07-20
申请人： Ravisekhar Raju
发明人： Ravisekhar Raju
IPC分类号： H02J3/46 , H02M7/5387 , H02M1/00 , H02M3/335
CPC分类号： H02M1/008 , H02M3/33571 , H02M3/33576
摘要： A three-phase AC solid-state transformer is provided which comprises three DC-DC converters. Each of the DC-DC converters has an internal transformer for galvanic isolation between its input and output sides. Each of the DC-DC converters has unipolar voltage across its input terminals and unipolar voltage across its output terminals. In one embodiment, the positive input terminals of the three DC-DC converters serve respectively as the three AC input terminals of the solid-state transformer and their positive output terminals provide the three phase AC output of the solid-state transformer. The negative input terminals of the three DC-DC converters are connected together to form a first common node, while the negative output terminals are connected together to form a second common node. The first common node has a voltage offset from the neutral of the input AC phases; and the second common node has a voltage offset from the neutral of the output AC phases.

6. 发明公开

US20240022196A1 Electric machine with magnetic flux modulated at high frequency 审中-公开
公开(公告)号：US20240022196A1
公开(公告)日：2024-01-18
申请号：US18221866
申请日：2023-07-13
申请人： Ravisekhar Raju
发明人： Ravisekhar Raju
IPC分类号： H02P27/04
CPC分类号： H02P27/04 , H02P2209/11
摘要： An electric machine is provided in which the magnetic field in the air gap between the stator and the rotor rotates around the air gap while simultaneously reversing in polarity at a modulation frequency that is substantially higher than the rotational frequency of the field around the air gap. The magnetic field modulation is carried out by modulating the machine stator or rotor currents at a high frequency through a power converter or inverter. The high frequency modulation of the magnetic field can reduce the size of the machine.

7. 发明公开

US20240282488A1 Electrical Insulation Tube 审中-公开
公开(公告)号：US20240282488A1
公开(公告)日：2024-08-22
申请号：US18582643
申请日：2024-02-20
申请人： Ravisekhar Raju
发明人： Ravisekhar Raju
IPC分类号： H01B17/58 , H01B17/64
CPC分类号： H01B17/58 , H01B17/64
摘要： An electrical insulating tube is provided which isolates at least one conductor placed within the tube and a second conductor or elements that are placed outside the tube. The tube comprises a first conductive coating or foil placed on the inner surface or within the insulating tube material but substantially near its inner surface with this first conductive coating or foil electrically referenced to the conductor placed within the tube. The tube optionally comprises a second conductive coating or foil placed on the outer surface or within the tube material but substantially near its outside surface with this second conductive coating or foil electrically referenced to a conductor or electrical element placed outside the tube. Several embodiments and methods to make the tube are described.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式