公开(公告)号：US10103665B2

公开(公告)日：2018-10-16

申请号：US15399824

申请日：2017-01-06

Applicant: General Electric Company

Inventor： Robert Gregory Wagoner ,  Govardhan Ganireddy ,  Saurabh Shukla ,  Ravisekhar Nadimpalli Raju ,  Harold Robert Schnetzka

IPC: H02P9/10 ,  H02K11/33 ,  F03D7/04 ,  H02K7/18 ,  H02P9/00 ,  H02M7/48 ,  H02M1/00 ,  H02M1/32

Abstract: Systems and methods for protecting the redundancy of inverter blocks are provided. In one example implementation, a system can include a plurality of inverter blocks. Each inverter block can include a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power. An isolation transformer can be coupled between the first conversion entity and the second conversion entity. The system includes an inverter block switching element coupled to an output of each inverter block. A protection element is disposed in each inverter block. The system includes one or more control devices configured to isolate at least one of the plurality of inverter blocks based at least in part on a status of the protection element disposed in the inverter block.

公开(公告)号：US20180205335A1

公开(公告)日：2018-07-19

申请号：US15405712

申请日：2017-01-13

Applicant: General Electric Company

Inventor： Dong Dong ,  Robert Gregory Wagoner ,  Govardhan Ganireddy ,  Ravisekhar Nadimpalli Raju

IPC: H02P9/10 ,  H02M5/458 ,  H02M1/084 ,  H02M1/32 ,  H02J3/38 ,  F03D7/04 ,  H02P9/00 ,  H02K7/18 ,  H02K11/33

CPC classification number: H02M5/4585 ,  F03D7/0272 ,  F03D7/042 ,  H02J3/386 ,  H02K7/183 ,  H02K11/33 ,  H02M3/33584 ,  H02M5/458 ,  H02M7/4807 ,  H02M7/5387 ,  H02M7/797 ,  H02M2001/0032 ,  H02M2001/007 ,  H02P9/007 ,  Y02B70/16 ,  Y02E10/763

Abstract: Systems and methods for operating a power converter are provided. A DC to AC converter can include an inner converter and an outer converter. The inner converter can include an isolation transformer a first plurality of switching devices. The outer converter can include a second plurality of switching devices. A control method can include determining an output voltage of the outer converter. The control method can further include controlling operation of the inner converter based at least in part on the output voltage of the outer converter.

公开(公告)号：US20180191166A1

公开(公告)日：2018-07-05

申请号：US15399001

申请日：2017-01-05

Applicant: General Electric Company

Inventor： Robert Gregory Wagoner ,  Govardhan Ganireddy ,  Saurabh Shukla ,  Rajni Kant Burra ,  Ravisekhar Nadimpalli Raju ,  Rui Zhou ,  Rajib Datta ,  John Leo Bollenbecker

IPC: H02J3/38 ,  H02M5/458 ,  H02M7/66 ,  H02M7/48 ,  H02J7/00

CPC classification number: H02J3/383 ,  H02J3/386 ,  H02J7/0068 ,  H02M7/49 ,  H02M7/797 ,  H02M2001/0058 ,  H02M2001/0077 ,  Y02B70/1483 ,  Y02B70/1491 ,  Y02E10/563 ,  Y02E10/763

Abstract: Power converters for use in energy systems are included. For instance, an energy system can include an input power source configured to provide a low voltage direct current power. The energy system can include a power converter configured to convert the low voltage direct current power provided by the input power source to a medium voltage multiphase alternating current output power suitable for provision to an alternating current power system. The power converter can include a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the energy system.

公开(公告)号：US20180123334A1

公开(公告)日：2018-05-03

申请号：US15336453

申请日：2016-10-27

Applicant: General Electric Company

Inventor： Xu She ,  Rajib Datta ,  Ravisekhar Nadimpalli Raju ,  Maja Harfman-Todorovic ,  Philip Michael Cioffi

IPC: H02G5/00 ,  H02B1/20

CPC classification number: H02G5/005 ,  H01G2/02 ,  H02B1/20 ,  H02G5/00 ,  H02G5/007 ,  H02M7/003 ,  H05K7/02

Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.

公开(公告)号：US09780643B2

公开(公告)日：2017-10-03

申请号：US14789111

申请日：2015-07-01

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dong Dong ,  Ravisekhar Nadimpalli Raju

IPC: B60R16/03 ,  B63H21/17 ,  H02J1/10 ,  H02M1/34 ,  B63J3/00 ,  H02M3/158 ,  H02H7/26 ,  H02J1/00

CPC classification number: H02M1/34 ,  B60R16/03 ,  B63H21/17 ,  B63J3/00 ,  H02H7/268 ,  H02J1/00 ,  H02J1/102 ,  H02J4/00 ,  H02J2001/104 ,  H02J2001/106 ,  H02M3/1582 ,  H02M2001/348

Abstract: A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses and a plurality of power converters. The bus-tie converter includes at least two converter legs coupled by at least one inductor. Each converter leg includes a first branch connected with a snubber circuit by an intermediate switching device. The first branch includes two outer switching devices and at least one inner switching device connected between the two outer switching devices. The snubber circuit includes a combination of a diode, a resistor and a capacitor. A controller controls the operation of the plurality of power converters and the at least one bus-tie converter.

公开(公告)号：US20160009354A1

公开(公告)日：2016-01-14

申请号：US14328856

申请日：2014-07-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Rixin Lai ,  Di Zhang ,  Dong Dong ,  Konrad Roman Weeber ,  Ravisekhar Nadimpalli Raju ,  Steven Michael Mankevich

IPC: B63J3/00

CPC classification number: B63J3/00 ,  B60L3/0092 ,  B63J2003/002 ,  H02G3/00 ,  H02J1/102 ,  H02J7/34 ,  H02J2001/008

Abstract: A power system for a marine ship includes a plurality of protection zones, wherein at least two protection zones are coupled to each other via at least one bus-tie converter. Each of the protection zones includes a plurality of direct current (DC) buses; wherein DC buses which do not have same DC voltage are coupled to each other via at least one DC to DC converter. Furthermore, at least one energy source is coupled to at least one DC bus via a power electronic converter.

Abstract translation: 用于船舶船舶的动力系统包括多个保护区域，其中至少两个保护区域经由至少一个总线连接转换器彼此耦合。 每个保护区域包括多个直流（DC）总线; 其中不具有相同DC电压的DC总线经由至少一个DC-DC转换器彼此耦合。 此外，至少一个能量源经由电力电子转换器耦合到至少一个DC总线。

公开(公告)号：US20150070939A1

公开(公告)日：2015-03-12

申请号：US14020111

申请日：2013-09-06

Applicant: General Electric Company

Inventor： Ranjan Kumar Gupta ,  Ravisekhar Nadimpalli Raju ,  Rahul Shantilal Chokhawala

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02H3/025 ,  H02H3/06 ,  H02H3/08 ,  H02H7/261 ,  H02H7/268 ,  H02H9/02 ,  H02J3/36 ,  H02M1/32 ,  H02M3/337 ,  H02M7/10 ,  H04Q9/00 ,  Y02E60/60

Abstract: An electric power conversion system is coupled to a high voltage direct current (HVDC) transmission system. The electric power conversion system includes a plurality of power conversion modules. At least one of the power conversion modules includes at least one power converter coupled to at least one DC power terminal. The power conversion module also includes at least one isolation device coupled to the at least one power converter. The at least one power converter and the at least one isolation device at least partially define an isolatable portion of the electric power conversion system. The at least one isolation device is configured to remove the isolatable portion from service. The at least one power converter is configured to decrease electric current transmission through the isolatable portion prior to opening the at least one isolation device.

Abstract translation: 电力转换系统耦合到高压直流（HVDC）传输系统。 电力转换系统包括多个电力转换模块。 至少一个功率转换模块包括耦合到至少一个DC电源端子的至少一个功率转换器。 功率转换模块还包括耦合到至少一个功率转换器的至少一个隔离装置。 所述至少一个功率转换器和所述至少一个隔离装置至少部分地限定所述电力转换系统的可隔离部分。 所述至少一个隔离装置被配置为从所述可分离部分去除所述可分离部分。 所述至少一个功率转换器被配置为在打开所述至少一个隔离装置之前减小通过所述可隔离部分的电流传输。

公开(公告)号：US20140347898A1

公开(公告)日：2014-11-27

申请号：US14453637

申请日：2014-08-07

Applicant: General Electric Company

Inventor： Ravisekhar Nadimpalli Raju ,  Luis Jose Garces ,  Ranjan Kumar Gupta ,  Di Zhang ,  Andrew Allen Rockhill

IPC: H02M5/458

CPC classification number: H02M1/32 ,  H02M5/4585 ,  H02M7/217 ,  H02M7/483 ,  H02M2007/4835

Abstract: A power converter module is provided. The power converter module includes a first converter leg and a second converter leg. The first converter leg includes a first switching unit and a second switching unit coupled in series. The second switching unit is disposed in a reverse orientation with respect to an orientation of the first switching unit. The second converter leg includes a third switching unit and a diode coupled in series. The third switching unit is disposed in a reverse orientation with respect to the orientation of the first switching unit. The power converter also includes a first energy storage device operatively coupled between the first converter leg and the second converter leg. The power converter module further includes a second energy storage device operatively coupled between the first converter leg and the second converter leg.

Abstract translation: 提供电源转换器模块。 功率转换器模块包括第一转换器支路和第二转换器支路。 第一转换器支路包括串联耦合的第一开关单元和第二开关单元。 第二开关单元相对于第一开关单元的取向以相反的方向设置。 第二转换器支路包括串联耦合的第三开关单元和二极管。 第三开关单元相对于第一开关单元的取向以相反方向设置。 功率转换器还包括可操作地耦合在第一转换器支路和第二转换器支路之间的第一储能装置。 功率转换器模块还包括可操作地耦合在第一转换器支路和第二转换器支路之间的第二能量存储装置。

公开(公告)号：US20140265583A1

公开(公告)日：2014-09-18

申请号：US13842844

申请日：2013-03-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Nilanjan Ray Chaudhuri ,  Ranjan Kumar Gupta ,  Rajib Datta ,  Ravisekhar Nadimpalli Raju

IPC: H02J1/00

CPC classification number: H02J1/00 ,  H02J3/36 ,  H02J3/386 ,  H02J13/0086 ,  Y02E10/763 ,  Y02E40/72 ,  Y02E60/60 ,  Y04S10/123 ,  Y10T307/549

Abstract: A direct current (DC) transmission and distribution (T&D) system includes a plurality of DC-to-DC converter devices defining a plurality of isolatable portions of the DC T&D system. The DC T&D system also includes a DC T&D control system coupled to the DC-to-DC converter devices. The DC T&D control system includes a plurality of current sensors. At least one of the current sensors is positioned at one of the DC-to-DC converter devices. The current sensor is configured to transmit signals representative of a value of DC electric current transmission through the DC-to-DC converter device. The DC T&D control system also includes a plurality of processors. At least one processor is coupled to the current sensor and the DC-to-DC converter device. The processor is configured to regulate DC current transmission through the DC-to-DC converter device as a function of the value of DC current transmission through the DC-to-DC converter device.

Abstract translation: 直流（DC）传输和分配（T＆D）系统包括限定DC T＆D系统的多个可隔离部分的多个DC-DC转换器装置。 DC T＆D系统还包括耦合到DC-DC转换器设备的DC T＆D控制系统。 DC T＆D控制系统包括多个电流传感器。 至少一个电流传感器位于DC-DC转换器装置之一处。 电流传感器被配置为传送表示通过DC-DC转换器装置的DC电流传输的值的信号。 DC T＆D控制系统还包括多个处理器。 至少一个处理器耦合到电流传感器和DC-DC转换器装置。 处理器被配置为根据通过DC-DC转换器装置的DC电流传输的值来调节通过DC-DC转换器装置的DC电流传输。

公开(公告)号：US20210384823A1

公开(公告)日：2021-12-09

申请号：US17287785

申请日：2018-10-23

Applicant: General Electric Company

Inventor： Ravisekhar Nadimpalli Raju

IPC: H02M3/155

Abstract: A power generation system includes a first power source, a second power source, an inverter, a DC-DC boost converter, and a control system. The control system includes a switching contactor coupled to the first power source, the second power source, the inverter, and the DC-DC boost converter. The control system further includes a controller operatively coupled to the switching contactor. The controller is configured to selectively connect one power source of the first power source and the second power source having a lower output voltage level among the first power source and the second power source to the inverter via the DC-DC boost converter. The controller is further configured to selectively connect other power source of the first power source and the second power source directly to the inverter.