公开(公告)号：US20140265972A1

公开(公告)日：2014-09-18

申请号：US13838925

申请日：2013-03-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Chunchun Xu ,  Allen Michael Ritter ,  Cyrus David Harbourt ,  Luis Jose Garces ,  Cheng Luo

IPC: H02P27/06

CPC classification number: H02P27/06 ,  H02M1/12 ,  H02M5/45 ,  H02M7/17 ,  H02M7/19 ,  H02M7/493 ,  H02M7/521 ,  H02P25/024 ,  H02P29/032 ,  H02P2201/13

Abstract: A load commutated inverter (LCI) drive system for a synchronous electrical machine is provided. The system may include a first supply bridge and a second supply bridge, each of which may include an alternating current to direct current (AC-to-DC) source side converter, a DC link circuit, and a DC-to-AC load side inverter. The system may include a controller for selectively controlling at least one of the first supply bridge and the second supply bridge by selective firings of SCRs. The electrical power outputted from the first supply bridge and the second supply bridge may be combined by an output delta-wye electric power transformer and supplied to the electrical machine. The LCI drive system may further include one or more input electric power transformers configured to supply an input electric power to the first supply bridge and the second supply bridge.

Abstract translation: 提供了一种用于同步电机的负载换向逆变器（LCI）驱动系统。 该系统可以包括第一供电桥和第二供电桥，每个电桥可以包括直流（AC至DC）源侧转换器，直流链路电路和直流到交流负载侧的交流电 逆变器。 该系统可以包括控制器，用于通过SCR的选择性启动来选择性地控制第一供电桥和第二供电桥中的至少一个。 从第一供电桥和第二供电桥输出的电力可以由输出三角形电力变压器组合并供给电机。 LCI驱动系统还可以包括一个或多个输入电力变压器，其被配置为向第一供电桥和第二供电桥提供输入电力。

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：US20170110969A1

公开(公告)日：2017-04-20

申请号：US14885675

申请日：2015-10-16

Applicant: General Electric Company

Inventor： Rui Zhou ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju ,  Ashraf Said Atalla

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02J3/382 ,  H02J3/385 ,  H02M3/33569 ,  H02M3/337 ,  H02M2001/0058 ,  H02M2001/0074 ,  H02M2001/0077 ,  Y02B70/1491 ,  Y02E10/58

Abstract: A medium voltage direct current (MVDC) collector system for renewable power generation facilities includes at least one renewable energy generation device. The MVDC collector system also includes at least one direct current (DC)-to-DC (DC/DC) power converter coupled to the at least one renewable energy generation device. The at least one DC/DC power converter is configured to shift a switching operation of the DC/DC power converter between full-wave conversion and half-wave conversion. The MVDC collector system further includes at least one controller coupled to the at least one DC/DC power converter. The at least one controller is configured to regulate shifting the switching operation of the at least one DC/DC power converter between full-wave conversion and half-wave conversion.

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：US09515565B2

公开(公告)日：2016-12-06

申请号：US14200937

申请日：2014-03-07

Applicant: General Electric Company

Inventor： Ranjan Kumar Gupta ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju

IPC: H02M5/458 ,  H02J3/36 ,  H02M1/12 ,  H02M7/162 ,  H02M7/521 ,  H02M3/158 ,  H02M1/00 ,  H02M7/483 ,  H02M7/757

CPC classification number: H02M5/4585 ,  H02J3/36 ,  H02M1/12 ,  H02M3/158 ,  H02M7/162 ,  H02M7/521 ,  H02M7/7575 ,  H02M2001/007 ,  H02M2001/0077 ,  H02M2007/4835 ,  Y02E60/60

Abstract: A hybrid HVDC converter system includes at least one alternating current (AC) conduit, at least one transformer coupled to said at least one AC conduit, and at least one direct current (DC) conduit. The hybrid HVDC converter system also includes at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current. The at least one CCC is coupled to the at least one AC conduit through the at least one transformer. The hybrid HVDC converter system further includes at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current. The at least one SCC includes at least one AC/DC stage and at least one DC/DC stage coupled to the at least one AC/DC stage.

Abstract translation: 混合HVDC转换器系统包括至少一个交流（AC）导管，耦合到所述至少一个AC导管的至少一个变压器和至少一个直流（DC）导管。 混合HVDC转换器系统还包括被配置为将AC电压和AC电流转换为DC电压和DC电流的至少一个电容器换向转换器（CCC）。 所述至少一个CCC通过所述至少一个变压器耦合到所述至少一个AC导管。 混合HVDC转换器系统还包括至少一个自整流转换器（SCC），其配置成将AC电压和AC电流转换成稳压的DC电压和DC电流。 所述至少一个SCC包括耦合到所述至少一个AC / DC级的至少一个AC / DC级和至少一个DC / DC级。

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：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。

公开(公告)号：US10243370B2

公开(公告)日：2019-03-26

申请号：US14960729

申请日：2015-12-07

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Luis Jose Garces ,  Rui Zhou ,  Zhi Zhou ,  Di Zhang

IPC: H02J5/00 ,  H02J3/38 ,  H02J3/32 ,  H02M1/15 ,  H02M7/483 ,  H02J3/30

Abstract: A system for integrating energy storage into a modular power converter includes at least one energy storage unit coupled to a first converter for converting a first direct current (DC) voltage of the at least one energy storage unit into a first high frequency alternating current (AC) voltage. At least three phase legs of the modular power converter generate three phase AC voltages. Each phase leg includes a plurality of switching modules connected in series. The switching modules have a plurality of fully controllable semiconductor switches, an energy storage device, and a second converter coupled to the respective energy storage device for converting a second DC voltage of the energy storage device into a second high frequency AC voltage. In the system, three similarly positioned switching modules of the three phase legs form one power unit. Further, a high frequency transformer is provided which has at least one primary winding connected to the first converter and at least three secondary windings, each connected to the second converter of each of the three similarly positioned switching modules. A controller is configured to regulate at least one electrical parameter of the modular power converter.

公开(公告)号：US10211747B2

公开(公告)日：2019-02-19

申请号：US16061717

申请日：2016-01-15

Applicant: General Electric Company

Inventor： Mohammed Agamy ,  Dong Dong ,  Yan Pan ,  Luis Jose Garces

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/088 ,  H02M1/34 ,  H02M1/00

Abstract: A direct current (DC) to DC power converter includes a first bus converter for converting a first DC bus voltage into a first high frequency AC voltage and a second bus converter for converting a second high frequency alternating current (AC) voltage into a second DC bus voltage. The DC to DC converter also includes a resonant circuit for coupling the first bus converter and the second bus converter and a controller for providing switching signals to the first bus converter and the second bus converter to operate the power converter in a soft switching mode. The controller includes a switching frequency controller for determining a switching frequency signal for the power converter based on a reference output current and a phase shift controller for determining a phase shift signal for the power converter. When the reference output current is lower than the a first load current value the switching frequency signal is maintained at a first switching frequency and the phase shift is determined according to the reference output current. Further, when the reference output current is above a second load current value the switching frequency signal is maintained at a second switching frequency and the phase shift is determined according to the reference output current. When the reference output current is between the first load current value and the second load current value, the switching frequency signal is adjusted according to a value of the reference output current and the phase shift is determined based on the switching frequency, the reference output current and perturbations in the output current.