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公开(公告)号：US09640982B2
公开(公告)日：2017-05-02
申请号：US14533762
申请日：2014-11-05
Applicant: GENERAL ELECTRIC COMPANY
Abstract: An over-voltage protection system includes an electronic valve connected across two terminals of a circuit and an over-voltage detection circuit connected across one of the plurality of semiconductor devices for detecting an over-voltage across the circuit. The electronic valve includes a plurality of semiconductor devices connected in series. The over-voltage detection circuit includes a voltage divider circuit connected to a break-over diode in a way to provide a representative low voltage to the break-over diode and an optocoupler configured to receive a current from the break-over diode when the representative low voltage exceeds a threshold voltage of the break-over diode indicating an over-voltage condition. The representative low voltage provided to the break-over diode represents a voltage across the one semiconductor device. A plurality of self-powered gate drive circuits are connected to the plurality of semiconductor devices, wherein the plurality of self-powered gate drive circuits receive over-voltage triggering pulses from the optocoupler during the over-voltage condition and switch on the plurality of semiconductor devices to bypass the circuit.
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公开(公告)号：US09551767B2
公开(公告)日：2017-01-24
申请号：US13709812
申请日：2012-12-10
Applicant: General Electric Company
Inventor： Juan Antonio Sabate , Wesley Michael Skeffington , Song Chi , Rixin Lai , Yimeng Shi , Yanjun Zhang
IPC: G01V3/00 , G01R33/36 , G01R33/54 , G01R33/385
CPC classification number: G01R33/3614 , G01R33/3852 , G01R33/543
Abstract: A gradient amplifier system, includes: a power stage comprising a plurality of bridge amplifiers, each operates at a first switching frequency; a gradient coil coupled to the power stage and configured to produce a magnetic field proportional to a coil current signal supplied by the power stage; a controller stage coupled to an input terminal of the power stage and configured to: generate a pulse width modulated gate signal based on the coil current signal and a reference current signal, wherein the pulse width modulated gate signal is generated at a second switching frequency when a slew rate associated with the reference current signal is below a threshold rate for at least a first time period; and apply the pulse width modulated gate signal to the power stage for changing an operating frequency of each of the plurality of bridge amplifiers from the first to the second switching frequency.
Abstract translation: 一种梯度放大器系统，包括：功率级，包括多个桥式放大器，每个以第一开关频率工作; 耦合到功率级并被配置为产生与由功率级提供的线圈电流信号成比例的磁场的梯度线圈; 控制级，其耦合到所述功率级的输入端，并且被配置为：基于所述线圈电流信号和参考电流信号产生脉宽调制门信号，其中所述脉宽调制门信号以第二开关频率产生， 与参考电流信号相关联的转换速率低于至少第一时间段的阈值速率; 并且将所述脉冲宽度调制的栅极信号施加到所述功率级，以将所述多个桥接放大器中的每一个的工作频率从第一开关频率改变为第二开关频率。
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23.发明授权Method and system for control and protection of direct current subsea power systems 有权直流海底电力系统的控制和保护方法及系统公开(公告)号：US09496702B2
公开(公告)日：2016-11-15
申请号：US13941657
申请日：2013-07-15
Applicant: General Electric Company
Inventor： Dong Dong , Luis Jose Garces , Rixin Lai , Song Chi , Maja Harfman Todorovic , Di Zhang
CPC classification number: H02H3/16 , E21B41/0085 , H02J3/36 , H02J2003/365 , Y02E60/60 , Y10T307/305
Abstract: A method and a high-voltage DC (HVDC) power system are provided. The system includes a plurality of sending-end (SE) modules coupled in electrical series and divided into at least two groups that each operate independently with respect to an electrical ground and a plurality of receiving-end (RE) power converter modules electrically coupled to the plurality of SE modules, the plurality of RE power converter modules including a fast ground-fault detection and control device, the plurality of RE power converter modules including a receiving-end front-end DC-DC converter controller, and an output current damping control.
Abstract translation: 提供了一种方法和高压直流（HVDC）电力系统。 该系统包括多个发送端（SE）模块，其以电串联方式耦合并分成至少两组，每组至少两组相对于电接地单独操作，多个接收端（RE）功率转换器模块电耦合到 所述多个SE模块，所述多个RE功率转换器模块包括快速接地故障检测和控制装置，所述多个RE功率转换器模块包括接收端前端DC-DC转换器控制器和输出电流阻尼 控制。
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公开(公告)号：US20160154046A1
公开(公告)日：2016-06-02
申请号：US14556744
申请日：2014-12-01
Applicant: General Electric Company
CPC classification number: G01R31/025 , G01R31/008 , G01R31/08
Abstract: A ground fault detection system for locating a ground fault in a direct current (DC) power transfer system is provided. The system includes a ground fault detection component and a current sensor. The ground fault detection component includes a first switch and a first resistive element electrically coupled to each other in a series configuration. The ground fault detection component also includes a second switch and a second resistive element electrically coupled to each other in a series configuration. Furthermore, the current sensor is operatively coupled to a load and is configured to measure a fault current at the load upon switching at least one of the first switch or the second switch to a conducting state.
Abstract translation: 提供了用于定位直流（DC）电力传输系统中的接地故障的接地故障检测系统。 该系统包括接地故障检测部件和电流传感器。 接地故障检测部件包括以串联结构彼此电耦合的第一开关和第一电阻元件。 接地故障检测部件还包括以串联配置彼此电耦合的第二开关和第二电阻元件。 此外，电流传感器可操作地耦合到负载，并且被配置为在将第一开关或第二开关中的至少一个切换到导通状态时测量负载处的故障电流。
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Patent Agency Ranking
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。
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公开(公告)号：US20150280605A1
公开(公告)日：2015-10-01
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
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。
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公开(公告)号：US20150102671A1
公开(公告)日：2015-04-16
申请号：US14054204
申请日：2013-10-15
Applicant: General Electric Company
Inventor： Luis José Garcés Rivera , Dong Dong , Rixin Lai , Di Zhang
CPC classification number: H02M7/06 , H02J5/00 , H02M7/10 , Y10T307/406
Abstract: A system for transmitting direct current (DC) power includes a system DC link for carrying power from a source to a plurality of loads and alternating current (AC) to DC power converter modules coupled in series to the system DC link on a supply side of the system DC link. At least one AC to DC power converter module is connected to the source via at least one controllable semiconductor switch such that when the controllable semiconductor switch is not conducting, the at least one AC to DC power converter module adds about zero voltage to a system DC link voltage and provides a path for a DC link current
Abstract translation: 一种用于传输直流（DC）电力的系统包括一个系统DC链路，用于承载从源到多个负载的电力，以及交流（AC）到直流电力转换器模块，串联连接到供电侧的系统DC链路 系统DC链路。 至少一个AC至DC功率转换器模块经由至少一个可控半导体开关连接到源极，使得当可控半导体开关不导通时，至少一个AC至DC功率转换器模块向系统DC增加大约零电压 链路电压并提供直流链路电流的路径
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公开(公告)号：US20150062991A1
公开(公告)日：2015-03-05
申请号：US14014516
申请日：2013-08-30
Applicant: General Electric Company
Inventor： Di Zhang , Luis Jose Garces , Andrew Allen Rockhill , Rixin Lai
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M7/487 , H02M7/5152 , H02M7/7575 , H02M2001/0003 , H02M2007/4835 , Y02E60/60
Abstract: A power converter includes at least one leg including a first string that includes controllable semiconductor switches, a first connecting node, and a second connecting node and that is operatively coupled across a first bus and a second bus. A second string is operatively coupled to the first string via the first connecting node and the second connecting node. The second string includes a plurality of switching modules wherein each of the plurality of switching modules includes a plurality of fully controllable semiconductor switches and at least one energy storage device. The power converter includes a system controller to control activation of the controllable semiconductor switches and switching modules such that a controlled electrical variable is maintained at a first predetermined reference voltage value and the average internal stored energy of the energy storage devices is maintained at a second predetermined reference value.
Abstract translation: 功率转换器包括至少一条腿，其包括包括可控半导体开关的第一串，第一连接节点和第二连接节点，并且可操作地跨越第一总线和第二总线耦合。 第二串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。 第二串包括多个开关模块，其中多个开关模块中的每一个包括多个完全可控的半导体开关和至少一个能量存储装置。 功率转换器包括系统控制器，用于控制可控半导体开关和开关模块的激活，使得受控电变量保持在第一预定参考电压值，并且能量存储装置的平均内部存储能量保持在第二预定 参考值。
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29.发明申请METHOD AND SYSTEM FOR CONTROL AND PROTECTION OF DIRECT CURRENT SUBSEA POWER SYSTEMS 有权控制和保护直流电源系统的方法和系统公开(公告)号：US20150015066A1
公开(公告)日：2015-01-15
申请号：US13941657
申请日：2013-07-15
Applicant: General Electric Company
Inventor： Dong Dong , Luis Jose Garces , Rixin Lai , Song Chi , Maja Harfman Todorovic , Di Zhang
CPC classification number: H02H3/16 , E21B41/0085 , H02J3/36 , H02J2003/365 , Y02E60/60 , Y10T307/305
Abstract: A method and a high-voltage DC (HVDC) power system are provided. The system includes a plurality of sending-end (SE) modules coupled in electrical series and divided into at least two groups that each operate independently with respect to an electrical ground and a plurality of receiving-end (RE) power converter modules electrically coupled to the plurality of SE modules, the plurality of RE power converter modules including a fast ground-fault detection and control device, the plurality of RE power converter modules including a receiving-end front-end DC-DC converter controller, and an output current damping control.
Abstract translation: 提供了一种方法和高压直流（HVDC）电力系统。 该系统包括多个发送端（SE）模块，其以电串联方式耦合并分成至少两组，每组至少两组相对于电接地单独操作，多个接收端（RE）功率转换器模块电耦合到 所述多个SE模块，所述多个RE功率转换器模块包括快速接地故障检测和控制装置，所述多个RE功率转换器模块包括接收端前端DC-DC转换器控制器和输出电流阻尼 控制。
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