公开(公告)号：US20180054184A1

公开(公告)日：2018-02-22

申请号：US15241434

申请日：2016-08-19

Applicant: General Electric Company

Inventor： Ruxi Wang ,  Satish Prabhakaran ,  Feng Chen ,  Di Zhang

IPC: H03H11/12 ,  H05K7/20 ,  H02M7/537 ,  H02M1/44

CPC classification number: H03H11/12 ,  H01L35/00 ,  H02M1/44 ,  H02M7/537 ,  H05K7/20009 ,  H05K7/20218

Abstract: A filtering unit is presented. The filtering unit includes at least two operational amplifiers, where each of the at least two operational amplifiers includes an input end and an output end, where the input end of one operational amplifier is coupled across the corresponding input end of another operational amplifier of the at least two operational amplifiers. The filtering unit also includes a direct current link operatively coupled to the at least two operational amplifiers and at least one thermoelectric module, where each thermoelectric module includes a conducting layer, where the direct current link and at least one of the at least two operational amplifiers are operatively coupled to the at least one thermoelectric module. A filtering system is also presented.

公开(公告)号：US20170185130A1

公开(公告)日：2017-06-29

申请号：US14983010

申请日：2015-12-29

Applicant: General Electric Company

Inventor： Di Zhang ,  Rui Zhou ,  Xu She

IPC: G06F1/32 ,  H02M1/08 ,  H02M3/158

CPC classification number: G06F1/324 ,  G06F1/3287 ,  H01L29/1608 ,  H02M1/08 ,  H02M3/158 ,  H02M7/483 ,  H02M7/487 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2001/007 ,  Y02B70/1483 ,  Y02B70/1491

Abstract: A voltage converter may include a first set of silicon (Si)-based power devices coupled to a first direct current (DC) voltage source and a second set of Si-based power devices coupled to a second DC voltage source. The voltage converter may also include a first set of silicon-carbide (SiC)-based power devices coupled to the first set of Si-based power devices and to the second set of Si-based power devices. Each SiC-based power device of the first set of SiC-based power devices may switch at a higher frequency as compared to each Si-based power device of the first and second sets of the Si-based power electronic devices.

公开(公告)号：US09537421B2

公开(公告)日：2017-01-03

申请号：US14465887

申请日：2014-08-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Dong Dong ,  Andrew Allen Rockhill

IPC: H02M7/487 ,  H02M7/483 ,  H02M7/49

CPC classification number: H02M7/487 ,  H02M7/483 ,  H02M7/49 ,  H02M2007/4835

Abstract: A power converter includes at least one leg having a first string operatively coupled to a second string via a first connecting node and a second connecting node. The first string includes a first branch and a second branch operatively coupled via a third connecting node. Each of the branches has a plurality of switching units, a controllable semiconductor switch and the first connecting node and the second connecting node. The first string is operatively coupled across a first bus and a second bus. Furthermore, the second string includes a plurality of controllable semiconductor switches.

Abstract translation: 功率转换器包括至少一个支路，其具有经由第一连接节点和第二连接节点可操作地耦合到第二串的第一串。 第一串包括经由第三连接节点可操作地耦合的第一分支和第二分支。 每个分支具有多个开关单元，可控半导体开关和第一连接节点和第二连接节点。 第一串可操作地连接在第一总线和第二总线上。 此外，第二串包括多个可控半导体开关。

公开(公告)号：US09252681B2

公开(公告)日：2016-02-02

申请号：US14014516

申请日：2013-08-30

Applicant: General Electric Company

Inventor： Di Zhang ,  Luis José Garcés ,  Andrew Allen Rockhill ,  Rixin Lai

IPC: H02M7/483 ,  H02M7/537 ,  H02M7/487 ,  H02M7/515 ,  H02M7/757 ,  H02M1/00

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。

公开(公告)号：US20150070802A1

公开(公告)日：2015-03-12

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

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：US20140092661A1

公开(公告)日：2014-04-03

申请号：US13629882

申请日：2012-09-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Luis Jose Garces ,  Rajib Datta ,  Ravisekhar Nadimpalli Raju

IPC: H02M7/42 ,  H02M7/515 ,  H02M7/537

CPC classification number: H02M7/5152 ,  H02M3/3376 ,  H02M7/487 ,  H02M7/537 ,  H02M7/53871 ,  H02M7/7575 ,  H02M2007/4835 ,  Y02E60/60

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 controllable semiconductor switches, 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. A method for power conversion is also presented.

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可控半导体开关，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 穿过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。 还提出了一种电源转换方法。

公开(公告)号：US10734884B2

公开(公告)日：2020-08-04

申请号：US15762130

申请日：2015-10-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Tomas Sadilek ,  Di Zhang ,  Zhi Zhou ,  Dong Dong

IPC: H02M1/12 ,  H02M7/483 ,  H02J3/01

Abstract: Systems and methods to improve operation of a modular multilevel converter. Some embodiments include a first upper arm with a first active power link module, which facilitates producing a first portion of a first alternating current electrical power at a base frequency and injecting a first even-order current harmonic of the base frequency in the first upper arm, and a first lower arm with a second active power link module, which facilitates producing a second portion of the first alternating current, in which the first portion of the first alternating current and the second portion of the alternating current are combined to facilitate outputting the first alternating current electrical power at a first alternating current terminal, and injecting the first even-order current harmonic in the first lower arm, in which magnitude of the first even-order current harmonic is zero at the first alternating current terminal.

公开(公告)号：US10581342B2

公开(公告)日：2020-03-03

申请号：US15993945

申请日：2018-05-31

Applicant: General Electric Company

Inventor： Di Zhang ,  Jiangbiao He ,  Sachin Madhusoodhanan

IPC: H02M7/487 ,  H02M1/34 ,  H02M7/5395 ,  H02M1/00 ,  H01L29/16

Abstract: A system includes a voltage converter and a controller for controlling the operation of the voltage converter. The voltage converter includes a plurality of legs, wherein each leg includes a first and a second set of silicon (Si)-based power devices. The first set of Si-based power devices includes a first and second Si-based power devices connected to each other at a first interconnection node and the second set of Si-based power devices includes a third and fourth Si-based power devices connected to each other at a second interconnection node. The first and second set of Si-based power devices are coupled across a first and second DC voltage sources respectively. A first set of Silicon-Carbide (SiC) based power devices is coupled across the first and second interconnection nodes. The system also includes a snubber capacitor connected across the first and the second interconnection nodes.

公开(公告)号：US10547251B1

公开(公告)日：2020-01-28

申请号：US16192668

申请日：2018-11-15

Applicant: General Electric Company

Inventor： Di Pan ,  Mark Edward Dame ,  Di Zhang ,  Jiangbiao He

IPC: H02M7/487 ,  H02M1/08 ,  H02M7/539 ,  H02M1/00

Abstract: A method for shutting down a phase-leg of a three-level active neutral point clamped converter is provided. The method includes the following steps. A determining step determines if a switch fault has occurred, and if a switch fault has occurred then each switch of the plurality of switches are turned off. If a switch fault has not occurred and a shutdown is requested, then an operating step operates the plurality of switches to turn off a first switch and a fourth switch. A waiting step waits for a first predetermined time period. An operating step operates the plurality of switches to turn on a second switch and a third switch. A waiting step is repeated. An operating step operates the plurality of switches to turn off a fifth switch and a sixth switch. A waiting step is repeated. An operating step turns off the second switch and the third switch.

公开(公告)号：US10355669B2

公开(公告)日：2019-07-16

申请号：US15241434

申请日：2016-08-19

Applicant: General Electric Company

Inventor： Ruxi Wang ,  Satish Prabhakaran ,  Feng Chen ,  Di Zhang

IPC: H02M1/44 ,  H03H11/12 ,  H02M7/537 ,  H05K7/20 ,  H01L35/00

Abstract: A filtering unit is presented. The filtering unit includes at least two operational amplifiers, where each of the at least two operational amplifiers includes an input end and an output end, where the input end of one operational amplifier is coupled across the corresponding input end of another operational amplifier of the at least two operational amplifiers. The filtering unit also includes a direct current link operatively coupled to the at least two operational amplifiers and at least one thermoelectric module, where each thermoelectric module includes a conducting layer, where the direct current link and at least one of the at least two operational amplifiers are operatively coupled to the at least one thermoelectric module. A filtering system is also presented.