公开(公告)号：US20170373586A1

公开(公告)日：2017-12-28

申请号：US15192023

申请日：2016-06-24

Applicant: General Electric Company

Inventor： Di Zhang ,  Rui Zhou ,  Luis Garces ,  Jiangbiao He

IPC: H02M1/088 ,  H01L29/16 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M7/5395 ,  H02M7/487 ,  H02M2001/0048 ,  H02M2001/0054

Abstract: The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of Si-based power electronic devices coupled to first and second voltage source, respectively, and a first set of SiC-based power electronic devices coupled to the first and second sets of Si-based power electronic devices. The method includes switching between operational states of the hybrid converter system based on a desired voltage output, wherein each operational state includes one of the Si-based power electronic devices from the first and second sets of Si-based power electronic devices and one of the SiC-based devices from the first set of SiC-based power electronic devices being switched on and the remaining power electronic devices being switched off. Each SiC-based power electronic device of the first set of SiC-based power electronic devices switches at a higher frequency as compared to each Si-based power electronic device of the first and second sets of the Si-based power electronic devices.

公开(公告)号：US09745038B2

公开(公告)日：2017-08-29

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: H02J3/00 ,  H02J7/34 ,  H02G3/00 ,  B63J3/00 ,  B60L3/00 ,  H02J1/10 ,  H02J1/00

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.

公开(公告)号：US09744925B2

公开(公告)日：2017-08-29

申请号：US14789060

申请日：2015-07-01

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dong Dong ,  Di Zhang ,  Rixin Lai

IPC: B60R16/03 ,  B63H21/17 ,  H02J1/10 ,  B60R16/023 ,  H02J4/00 ,  H02M1/34 ,  H02H7/122

CPC classification number: B60R16/023 ,  B60R16/03 ,  B63H21/17 ,  H02H7/1225 ,  H02J1/102 ,  H02J4/00 ,  H02J2001/104 ,  H02J2001/106 ,  H02M1/34

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. The first branch includes two outer switching devices and at least one inner switching device connected between the two outer switching devices. The first branch also includes a damping resistor coupled between the two outer switching devices to dissipate a fault current. 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：US09722511B2

公开(公告)日：2017-08-01

申请号：US13711483

申请日：2012-12-11

Applicant: General Electric Company

Inventor： Luis Jose Garces ,  Juan Antonio Sabate ,  Di Zhang

IPC: H02M7/5395 ,  H02M7/5387

CPC classification number: H02M7/5395 ,  H02M7/53871

Abstract: Systems and methods for controlling an electrical power supply are provided. One system includes an input configured for receiving voltage measurement signals for the power supply and a controller for one or more electrical phases of the power supply. The controller includes an integrator configured to integrate the received voltage measurement signals and to generate integrated control signals or integrated error signals. The controller is configured to generate an output signal using the integrated control signals or the integrated error signals. The system also includes an output configured to output the output signal to control switching of the power supply.

公开(公告)号：US09667167B2

公开(公告)日：2017-05-30

申请号：US14331242

申请日：2014-07-15

Applicant: General Electric Company

Inventor： Dong Dong ,  Di Zhang ,  Andrew Allen Rockhill

IPC: H02M7/217 ,  H02M1/32 ,  H02M7/487 ,  H02M7/483

CPC classification number: H02M7/217 ,  H02M1/32 ,  H02M7/487 ,  H02M2007/4835

Abstract: A power converter including one or more converter legs is provided. Each converter leg includes a first string including a plurality of switches coupled to each other in series. The one or more converter legs also include a second string operatively coupled to the first string at a first node and a second node in a parallel configuration, where the second string includes a plurality of switching units, and where a second string of one converter leg of the one or more converter legs is operatively coupled to second strings corresponding to other converter legs in the one or more converter legs.

公开(公告)号：US09537410B2

公开(公告)日：2017-01-03

申请号：US14482969

申请日：2014-09-10

Applicant: General Electric Company

Inventor： Rui Zhou ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju ,  Rixin Lai ,  Di Zhang

IPC: H02M3/335 ,  H02M1/44 ,  H02M1/00 ,  H02M7/483

CPC classification number: H02M3/33569 ,  H02M1/44 ,  H02M2001/0058 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: A system and method for series connecting electronic power devices are disclosed. In one embodiment, a switching device system includes a first upper arm electrically coupled to a first lower arm and a second upper arm electrically coupled to a second lower arm. Each of the arms include a plurality of low voltage sub-modules connected in series and each plurality of low voltage sub-modules includes an auxiliary switching device, a series switching device, and a capacitor. Each plurality of low voltage sub-modules is configured to be sequentially switched using the auxiliary switching device and the series switching device separately in the upper arms and the respective lower arms to control change in voltage over time (dV/dt) while selectively blocking a desired high voltage. Further, a capacitor voltage balancing (sorting or rotating) algorithm may be used to actively balance voltage across each plurality of low voltage sub-modules.

Abstract translation: 公开了一种用于串联电子功率器件的系统和方法。 在一个实施例中，开关装置系统包括电耦合到第一下臂的第一上臂和电耦合到第二下臂的第二上臂。 每个臂包括串联连接的多个低压子模块，并且每个低压子模块包括辅助开关装置，串联开关装置和电容器。 每个多个低压子模块被配置为使用辅助开关装置和串联开关装置在上臂和相应的下臂中分开地依次切换以控制电压随时间的变化（dV / dt），同时选择性地阻塞 所需高电压。 此外，可以使用电容器电压平衡（分选或旋转）算法来主动平衡每个低压子模块的电压。

公开(公告)号：US09515568B2

公开(公告)日：2016-12-06

申请号：US14229074

申请日：2014-03-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Rixin Lai ,  Luis Jose Garces

IPC: H02M7/217 ,  H02M7/219 ,  H02M7/487 ,  H02M7/483

CPC classification number: H02M7/217 ,  H02M7/219 ,  H02M7/487 ,  H02M2007/4835

Abstract: A power converter is presented. The power converter includes at least one leg, the at least one leg includes a first string, where the first string includes a plurality of diodes, a first connecting node, and a second connecting node, and where the first string is operatively coupled across a first bus and a second bus. Furthermore, the at least one leg includes a second string operatively coupled to the first string via the first connecting node and the second connecting node, where the second string includes a plurality of switching units.

Abstract translation: 介绍了一种电源转换器。 所述功率转换器包括至少一个支路，所述至少一个支路包括第一串，其中所述第一串包括多个二极管，第一连接节点和第二连接节点，并且其中所述第一串可操作地耦合跨越 第一班巴士和第二班车。 此外，所述至少一个支腿包括经由第一连接节点和第二连接节点可操作地耦合到第一串的第二串，其中第二串包括多个开关单元。

公开(公告)号：US09438042B2

公开(公告)日：2016-09-06

申请号：US13769919

申请日：2013-02-19

Applicant: General Electric Company

Inventor： Di Zhang ,  Luis Jose Garces ,  Jian Dai ,  Rixin Lai

IPC: H02J3/36 ,  H02J3/38 ,  H02J13/00

CPC classification number: H02J3/36 ,  H02J3/382 ,  H02J13/0003 ,  Y02E40/72 ,  Y02E60/60 ,  Y04S10/123

Abstract: A power transmission system includes a first unit for carrying out the steps of receiving high voltage direct current (HVDC) power from an HVDC power line, generating an alternating current (AC) component indicative of a status of the first unit, and adding the AC component to the HVDC power line. Further, the power transmission system includes a second unit for carrying out the steps of generating a direct current (DC) voltage to transfer the HVDC power on the HVDC power line, wherein the HVDC power line is coupled between the first unit and the second unit, detecting a presence or an absence of the added AC component in the HVDC power line, and determining the status of the first unit based on the added AC component.

Abstract translation: 电力传输系统包括：第一单元，用于执行从HVDC电力线接收高压直流（HVDC）功率的步骤，产生指示第一单元的状态的交流（AC）分量，以及将AC 组件到HVDC电源线。 此外，电力传输系统包括用于执行产生直流（DC）电压以在HVDC电力线上传输HVDC电力的步骤的第二单元，其中HVDC电力线耦合在第一单元和第二单元之间 检测所述HVDC电力线中所添加的AC分量的存在或不存在，以及基于所添加的AC分量来确定所述第一单元的状态。

公开(公告)号：US09178349B2

公开(公告)日：2015-11-03

申请号：US14024315

申请日：2013-09-11

Applicant: General Electric Company

Inventor： Dong Dong ,  Rixin Lai ,  Song Chi ,  Ranjan Kumar Gupta ,  Di Zhang

IPC: H02H3/16 ,  H02M1/00 ,  H02J3/36 ,  H02M11/00 ,  E21B41/00

CPC classification number: H02H3/16 ,  E21B41/00 ,  H02J3/36 ,  H02M1/00 ,  H02M11/00 ,  Y02E60/60

Abstract: A high-voltage DC (HVDC) power system and a method of controlling and protecting the HVDC power system includes a plurality of sending-end (SE) modules coupled in electrical series and a plurality of receiving-end (RE) power converter modules electrically coupled to said plurality of SE modules, the RE modules coupled in a switchyard configuration, the switchyard configuration including a plurality of load branches coupled together in electrical series, each load branch including a branch bypass switch configured to bypass load current around an associated load branch, and a branch protection system.

Abstract translation: 高压直流（HVDC）电力系统和控制和保护高压直流电力系统的方法包括以电串联耦合的多个发送端（SE）模块和多个接收端（RE）功率转换器模块 耦合到所述多个SE模块，所述RE模块以开关构造配置耦合，所述开关站配置包括以电串联耦合在一起的多个负载分支，每个负载分支包括分支旁路开关，所述分支旁路开关配置成绕负载分支 ，以及分支保护系统。

公开(公告)号：US20140233277A1

公开(公告)日：2014-08-21

申请号：US13769919

申请日：2013-02-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Luis Jose Garces ,  Jian Dai ,  Rixin Lai

IPC: H02J3/36

CPC classification number: H02J3/36 ,  H02J3/382 ,  H02J13/0003 ,  Y02E40/72 ,  Y02E60/60 ,  Y04S10/123

Abstract: A power transmission system includes a first unit for carrying out the steps of receiving high voltage direct current (HVDC) power from an HVDC power line, generating an alternating current (AC) component indicative of a status of the first unit, and adding the AC component to the HVDC power line. Further, the power transmission system includes a second unit for carrying out the steps of generating a direct current (DC) voltage to transfer the HVDC power on the HVDC power line, wherein the HVDC power line is coupled between the first unit and the second unit, detecting a presence or an absence of the added AC component in the HVDC power line, and determining the status of the first unit based on the added AC component.

Abstract translation: 电力传输系统包括：第一单元，用于执行从HVDC电力线接收高压直流（HVDC）功率的步骤，产生指示第一单元的状态的交流（AC）分量，以及将AC 组件到HVDC电源线。 此外，电力传输系统包括用于执行产生直流（DC）电压以在HVDC电力线上传输HVDC电力的步骤的第二单元，其中HVDC电力线耦合在第一单元和第二单元之间 检测所述HVDC电力线中所添加的AC分量的存在或不存在，以及基于所添加的AC分量来确定所述第一单元的状态。