公开(公告)号：US08854843B2

公开(公告)日：2014-10-07

申请号：US13818654

申请日：2010-08-24

Applicant: David Reginald Trainer ,  Nnamdi Okaeme

Inventor： David Reginald Trainer ,  Nnamdi Okaeme

IPC: H02J3/36 ,  H02M1/12 ,  H02M7/797

CPC classification number: H02J3/36 ,  H02J3/1857 ,  H02M1/12 ,  H02M1/32 ,  H02M7/49 ,  H02M7/797 ,  H02M2007/4835 ,  Y02E40/26 ,  Y02E60/60

Abstract: A power electronic converter (30)is for use in high voltage direct current power transmission and reactive power compensation, the power electronic converter (30) including three phase elements (32) defining a star connection (36) and a converter unit (34) including first and second DC terminals (50,52) for connection in use to a DC network (56) and three AC terminals (54), the converter unit (34) including a plurality of switching elements (70,74) controllable in use to facilitate power conversion between the AC and DC networks (44,56), the power electronic converter (30) further including a third DC terminal (78) connected between the first and second DC terminals (50,52), the third DC terminal (78) being connected to a common junction (40) of the star connection (36) to define an auxiliary connection (82), the auxiliary connection (82) including at least one dump resistor (84) connected between the common junction (40) and the third DC terminal (78), wherein the switching elements (70,74) of the converter unit (34) are controllable in use to modify a phase voltage at each AC terminal (54) to include a triplen harmonic voltage component so as to dissipate real power in the or each dump resistor (84) at a triplen harmonic frequency.

Abstract translation: 电力电子转换器（30）用于高压直流电力传输和无功补偿，所述电力电子转换器（30）包括限定星形连接（36）和转换器单元（34）的三相元件（32） 包括用于连接到DC网络（56）和三个AC端子（54）的第一和第二DC终端（50,52），所述转换器单元（34）包括可在使用中控制的多个开关元件（70,74） 为了促进AC和DC网络之间的电力转换（44,56），电力电子转换器（30）还包括连接在第一和第二DC端子（50,52）之间的第三DC端子（78），第三DC端子 （78）连接到星形连接（36）的公共接头（40）以限定辅助连接（82），辅助连接（82）包括连接在公共接头（40）之间的至少一个卸载电阻器（84） ）和第三DC端子（78），其中开关元件 转换器单元（34）中的70,74）在使用中是可控的，以修改每个AC端子（54）处的相电压以包括三次谐波电压分量，以便在该或每个转储电阻器（84）中消散有功功率 三倍谐波频率。

公开(公告)号：US20140254205A1

公开(公告)日：2014-09-11

申请号：US14236628

申请日：2011-08-24

Applicant: David Reginald Trainer ,  Nnamdi Okaeme

Inventor： David Reginald Trainer ,  Nnamdi Okaeme

IPC: H02M3/335

CPC classification number: H02M3/28 ,  H02M3/335 ,  H02M3/33576 ,  H02M7/483 ,  H02M2007/4835

Abstract: In the field of high voltage DC power transmission there is a need for a small, lightweight, inexpensive, and reliable means of connecting first and second high voltage DC power transmission networks.A DC to DC converter assembly, for connecting first and second high voltage DC power transmission networks, comprises an inverter which has first and second terminals which are connectable in use to a first high voltage DC power transmission network. The inverter is defined by a modular multilevel converter which includes a first inverter limb that extends between the first and second terminals and has first and second inverter limb portions that are separated by a third terminal. Each inverter limb portion includes at least one rationalised module which has first and second sets of series-connected current flow control elements that are connected in parallel with at least one energy storage device. Each set of current flow control elements includes an active switching element to selectively direct current through the energy storage device and a passive current check element to limit current flow through the rationalised module to a single direction. The current flow control elements and the or each energy storage device combine to selectively provide a voltage source to synthesise an AC voltage (VAC) at the third terminal. The DC to DC converter assembly also includes a rectifier that is electrically connected to the third terminal of the inverter by a first link and is connectable in use to a second high voltage DC power transmission network. The rectifier is configured to convert the AC voltage (VAC) conveyed by the first link into a second DC voltage (V2) for supply to the second high voltage DC power transmission network.

Abstract translation: 在高压直流输电领域，需要一种连接第一和第二高压直流输电网络的小型，轻量化，廉价和可靠的手段。 用于连接第一和第二高压直流输电网络的直流 - 直流转换器组件包括具有第一和第二端子的逆变器，所述第一和第二端子在使用中可连接到第一高压直流输电网络。 逆变器由模块化多电平转换器限定，其包括在第一和第二端子之间延伸的第一反相器臂，并且具有由第三端子分开的第一和第二反相器四肢部分。 每个逆变器分支部分包括至少一个合理化模块，其具有与至少一个能量存储装置并联连接的第一组和第二组串联电流流量控制元件。 每组电流流量控制元件包括有源开关元件，用于选择性地引导电流通过能量存储装置和无源电流检查元件，以将流过合理化模块的电流限制到单个方向。 电流流量控制元件和/或每个能量存储装置组合以选择性地提供电压源以在第三端子处合成AC电压（VAC）。 DC至DC转换器组件还包括通过第一链路与逆变器的第三端子电连接的整流器，并且可连接到第二高压DC输电网络。 整流器被配置为将由第一链路传送的AC电压（VAC）转换成用于供应到第二高压直流输电网络的第二直流电压（V2）。

公开(公告)号：US08193750B2

公开(公告)日：2012-06-05

申请号：US12379937

申请日：2009-03-04

Applicant: David Reginald Trainer ,  Harsh Agarwal ,  Stephen Mark Husband ,  Gareth Edward Moore ,  David James Powell ,  Stephen Andrew Long

Inventor： David Reginald Trainer ,  Harsh Agarwal ,  Stephen Mark Husband ,  Gareth Edward Moore ,  David James Powell ,  Stephen Andrew Long

IPC: H02P6/14

CPC classification number: H02P25/08 ,  H02P6/14 ,  H02P6/15 ,  H02P6/28 ,  H02P25/089

Abstract: Electrical machine arrangements have advantages with regard to providing local electrical power and starting. Embedding such electrical machine arrangements in machinery such as gas turbine engines is advantageous in removing mechanical linkages and reducing aerodynamic drag. However, the components utilized must be able to withstand harsh environmental conditions and therefore the DC link capacitor used for smoothing of voltage fluctuations are limited to relatively low capacitance densities. Low density DC link capacitors require large sizes which render electrical machines less acceptable for embedded usage. By providing offset of electrical current in inductance elements such as stator windings and stator coils of electrical machines in dead periods of the cycle a reduction in DC link capacitor requirements is achieved reducing the size, weight and complexity of installing electrical machines in gas turbine engines.

Abstract translation: 电机装置在提供局部电力和启动方面具有优势。 在诸如燃气涡轮发动机的机械中嵌入这样的电机装置有利于去除机械连杆并减小空气动力学阻力。 然而，所使用的部件必须能够承受恶劣的环境条件，因此用于平滑电压波动的DC链路电容器被限制在相对低的电容密度。 低密度直流链路电容器需要较大的尺寸，这使得电机不适合嵌入式使用。 通过在循环的死区中提供诸如电机的定子绕组和定子线圈的电感元件中的电流偏移，可以减少DC链路电容器的要求，从而降低了在燃气涡轮发动机中安装电机的尺寸，重量和复杂性。

公开(公告)号：US09509218B2

公开(公告)日：2016-11-29

申请号：US14236627

申请日：2011-08-01

Applicant: David Reginald Trainer ,  Nnamdi Okaeme

Inventor： David Reginald Trainer ,  Nnamdi Okaeme

IPC: H02M3/335 ,  H02M7/483 ,  H02M3/28

CPC classification number: H02M3/28 ,  H02M3/335 ,  H02M3/33576 ,  H02M7/483 ,  H02M2007/4835

Abstract: A DC to DC converter assembly, for connecting first and second high voltage DC power transmission networks, comprising first and second modular multilevel converters, each converter including a first converter limb having first and second limb portions, each limb portion including a least one module switchable to selectively provide a voltage source and thereby vary the magnitude ratio of a DC voltage (V1, V2) across the first and second terminals of a respective converter and an AC voltage (VAC) at the third terminal of the corresponding converter, the DC to DC converter assembly further including a first link electrically connecting the third terminal of one converter, with the third terminal of the other converter, and at least one converter further including a controller configured to switch the first and second limb portions in the first converter limb of the said converter into simultaneous conduction to divert a portion (IDiV1) of current flowing within the said converter away from the first link.

Abstract translation: 一种DC-DC转换器组件，用于连接第一和第二高压DC电力传输网络，包括第一和第二模块化多电平转换器，每个转换器包括具有第一和第二分支部分的第一转换器分支，每个分支部分包括至少一个可切换模块 选择性地提供电压源，从而改变跨过相应转换器的第一和第二端子的直流电压（V1，V2）和相应转换器的第三端口处的交流电压（VAC）的幅度比，直流到 DC转换器组件还包括将一个转换器的第三端子与另一个转换器的第三端子电连接的第一连接器以及至少一个转换器，该至少一个转换器还包括控制器，该控制器被配置为将第一转换器臂中的第一和第二臂部分切换到 所述转换器同时导通以将在所述转换器内流动的电流的一部分（IDiV1）转移掉f 第一个链接。

公开(公告)号：US09209693B2

公开(公告)日：2015-12-08

申请号：US14356882

申请日：2011-11-07

Applicant: Colin Charnock Davidson ,  David Reginald Trainer ,  Nnamdi Okaeme

Inventor： Colin Charnock Davidson ,  David Reginald Trainer ,  Nnamdi Okaeme

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/32 ,  H02H7/26 ,  H02J3/36 ,  H02M7/483

CPC classification number: H02M3/158 ,  H02H7/268 ,  H02J3/36 ,  H02M1/08 ,  H02M1/32 ,  H02M2007/4835 ,  Y02E60/60

Abstract: There is a control circuit comprising first and second DC terminals for connection to a DC network, the first and second DC terminals having a plurality of modules and at least one energy conversion element connected in series therebetween to define a current transmission path, the plurality of modules defining a chain-link converter, each module including at least one energy storage device, the or each energy storage device being selectively removable from the current transmission path to cause a current waveform to flow from the DC network through the current transmission path and the or each energy conversion element and thereby remove energy from the DC network, the or each energy storage device being selectively removable from the current transmission path to modulate the current waveform to maintain a zero net change in energy level of the chain-link converter.

Abstract translation: 存在包括用于连接到DC网络的第一和第二DC端子的控制电路，所述第一和第二DC端子具有多个模块和至少一个在其间串联连接的能量转换元件，以限定当前传输路径， 限定链式转换器的模块，每个模块包括至少一个能量存储装置，所述或每个能量存储装置可选地从当前传输路径移除，以使电流波形从DC网络流过当前传输路径，并且 或每个能量转换元件，从而从DC网络去除能量，所述或每个能量存储装置可选择性地从当前传输路径移除，以调制电流波形，以维持链式转换器的能量级别的零净变化。

公开(公告)号：US09130458B2

公开(公告)日：2015-09-08

申请号：US13634205

申请日：2010-03-15

Applicant: William Crookes ,  David Reginald Trainer ,  Donald Colin Murray Oates

Inventor： William Crookes ,  David Reginald Trainer ,  Donald Colin Murray Oates

IPC: G05F1/70 ,  G05F5/00 ,  H02M7/217 ,  H02J3/18 ,  H02M7/49 ,  H02M7/483

CPC classification number: H02M7/217 ,  H02J3/1835 ,  H02J3/1857 ,  H02M7/49 ,  H02M2007/4835 ,  Y02E40/12 ,  Y02E40/16 ,  Y02E40/26 ,  Y02E40/30

Abstract: A static synchronous compensator for use in reactive power compensation, the static synchronous compensator comprising at least one primary compensator limb including first and second DC terminals, and an AC terminal for connection in use to an AC network, the or each primary compensator limb defining first and second limb portions, each limb portion—including at least one switching element connected in series with a chain-link converter—between a respective one of the first and second DC terminals and the AC terminal, the switching elements of the first and second limb portions being operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal and the chain-link converters being operable to generate a voltage waveform at the AC terminal; and a secondary compensator limb including at least one DC link capacitor connected between the first and second DC terminals, the secondary compensator limb being connected in parallel with the or each primary compensator limb.

Abstract translation: 一种用于无功补偿的静态同步补偿器，所述静态同步补偿器包括至少一个包括第一和第二DC端子的主补偿器支路和用于连接到AC网络的AC端子，所述或每个初级补偿器支路限定第一 和第二肢部，每个肢体部分 - 包括与第一和第二DC端子中的相应一个与AC端子之间的链节转换器串联连接的至少一个开关元件，第一和第二肢体的开关元件 部分可操作以在相应的直流端子和交流端子之间切换各个链节转换器进入和离开电路，链式转换器可操作以在AC端子处产生电压波形; 以及次级补偿器支路，其包括连接在所述第一和第二DC端子之间的至少一个DC链路电容器，所述辅助补偿器支路与所述或每个主要补偿器支路并联连接。

公开(公告)号：US20150049530A1

公开(公告)日：2015-02-19

申请号：US14385967

申请日：2013-03-20

Applicant: David Reginald Trainer ,  Nnamdi Okaeme ,  ALSTOM Technology Ltd.

Inventor： David Reginald Trainer ,  Nnamdi Okaeme

IPC: H02M7/797

CPC classification number: H02M7/797 ,  H02M7/219 ,  H02M2007/4835 ,  Y02E60/60

Abstract: A power electronic converter (30), for connecting AC and DC networks (46,44) and transferring power therebetween, comprises: first and second DC terminals (32,34) defining a DC link for connection to a DC network (44); wherein, in use, the DC link has a reversible DC link voltage applied thereacross; at least one converter limb (36) extending between the first and second DC terminals (32,34) and having first and second limb portions (38,40) separated by an AC terminal (42) for connection to an AC network (46), each limb portion (38,40) including at least one rationalised module (52) having first and second sets of series-connected current flow control elements (54) connected in parallel with at least one energy storage device (56), each set of current flow control elements (54) including a primary active switching element to selectively direct current through the energy storage device (56) and a primary passive current check element to limit current flow through the rationalised module (52) to a single direction, the current flow control elements (54) and the or each energy storage device (56) combining to selectively provide a voltage source to synthesise an AC voltage at the AC terminal (42); and a first controller (60) to selectively switch the or each rationalised module (52) in each limb portion (38,40) to control the configuration of the AC voltage at the corresponding AC terminal (42) so as to transfer power from the AC network (46) to the DC network (44) in an AC to DC power transfer mode and to transfer power from the DC network (44) to the AC network (46) in a DC to AC power transfer mode, wherein each limb portion (38,40) includes: one or more secondary passive current check elements (48) to limit current flow through the corresponding limb portion (38,40) to a single direction between the corresponding AC and DC terminals (42,32,34), the or each secondary passive current check element (48) being connected in series with the or each rationalised module (52); or one or more secondary active switching elements that is connected in series with the or each rationalised module (52).

公开(公告)号：US20150003134A1

公开(公告)日：2015-01-01

申请号：US14377824

申请日：2012-02-16

Applicant: David Reginald Trainer

Inventor： David Reginald Trainer

IPC: H02M7/49 ,  H02J3/36

CPC classification number: H02M7/49 ,  H02J3/36 ,  H02M7/5388 ,  H02M2007/4835

Abstract: A power electronic converter assembly is provided having a multi-level converter, a plurality of phase elements and a controller to switch the multi-level converter. The multi-level converter includes a plurality of AC terminals and is operable to generate an AC phase voltage (VA, VB, VC) at each AC terminal. The plurality of phase elements define a star connection in which a first end of each phase element is connected to a common junction. Each AC terminal is connected in series with a second end of a respective phase element of the star connection. The controller can switch the multi-level converter to modulate the plurality of AC phase voltages (VA, VB, VC) to define a set of asymmetrical voltage vectors so as to synthesise a non-zero neutral point voltage at the common junction of the star connection, the non-zero neutral point voltage and each AC phase voltage (VA, VB, VC) defining a line-to-neutral voltage across each phase element, the line-to-neutral voltages being equal in magnitude and displaced at equidistant phase angles.

Abstract translation: 提供了具有多电平转换器，多个相位元件和用于切换多电平转换器的控制器的电力电子转换器组件。 多电平转换器包括多个AC端子，并且可操作以在每个AC端子处产生AC相电压（VA，VB，VC）。 多个相位元件限定星形连接，其中每个相位元件的第一端连接到公共接头。 每个AC端子与星形连接的相应相位元件的第二端串联连接。 控制器可以切换多电平转换器来调制多个AC相电压（VA，VB，VC），以定义一组非对称电压矢量，以便在星形的公共接合处合成非零中性点电压 连接，非零中性点电压和每个交流相电压（VA，VB，VC）限定每个相位元件上的线对零电压，线对中性电压的幅度相等，并在等距相位移位 角度。

公开(公告)号：US20140133196A1

公开(公告)日：2014-05-15

申请号：US14129923

申请日：2011-06-29

Applicant: David Reginald Trainer

Inventor： David Reginald Trainer

IPC: H02J3/36

CPC classification number: H02J3/36 ,  H02J3/18 ,  H02J2003/365 ,  H02M7/49 ,  H02M2007/4835 ,  Y02E40/30 ,  Y02E60/60

Abstract: A power electronic converter, for use in high voltage direct current power transmission and reactive power compensation, comprises at least one converter limb including first and second terminals being connectable to a DC network and a third terminal, the or each converter limb defining first and second limb portions connected in series between the third terminal and a respective one of the first and second terminals, each limb portion including a chain-link converter, each chain-link converter including a plurality of modules connected in series, each module including at least one primary switching element connected to at least one energy storage device, each converter limb being controllable to selectively define a circulation path carrying an AC circulation current for presentation to the DC network to minimise DC ripple in a DC voltage presented to the DC network.

Abstract translation: 一种用于高压直流电力传输和无功补偿的电力电子转换器包括至少一个转换器支路，其包括可连接到DC网络和第三终端的第一和第二终端，所述或每个转换器支路限定第一和第二 在所述第三端子与所述第一端子和所述第二端子中的相应一个之间串联连接的四肢部分，每个分支部分包括链式转换器，每个链式转换器包括串联连接的多个模块，每个模块包括至少一个 初级开关元件连接到至少一个能量存储装置，每个转换器支路可控制以选择性地限定一个循环路径，该循环路径承载AC循环电流，以呈现给DC网络，以最小化呈现给DC网络的DC电压中的DC纹波。

公开(公告)号：US20130279211A1

公开(公告)日：2013-10-24

申请号：US13881215

申请日：2010-10-27

Applicant: Timothy Charles Green ,  Michael Marc Claude Merlin ,  Nnamdi Okaeme ,  David Reginald Trainer

Inventor： Timothy Charles Green ,  Michael Marc Claude Merlin ,  Nnamdi Okaeme ,  David Reginald Trainer

IPC: H02J5/00 ,  H02J3/18

CPC classification number: H02J3/36 ,  H02J3/1814 ,  H02J7/02 ,  H02M7/49 ,  H02M2007/4835

Abstract: A power electronic converter for use in high voltage direct current power transmission and reactive power compensation includes at least one converter limb, which includes first and second DC terminals and an AC terminal. Each converter limb defines first and second limb portions connected in series between the AC terminal and a respective one of the first and second DC terminals. Each limb portion includes a chain-link converter connected in series with at least one primary switching element. Each chain-link converter includes a plurality of modules connected in series, and each module includes at least one secondary switching element connected to at least one energy storage device. Each primary switching element in each limb portion of a respective converter limb selectively defines a circulation path which carries a DC circulation current to regulate the energy level of at least one energy storage device in a respective chain-link converter.

Abstract translation: 用于高压直流电力传输和无功补偿的电力电子转换器包括至少一个转换器臂，其包括第一和第二直流端子和AC端子。 每个转换器肢体限定串联连接在AC端子和第一和第二DC端子中的相应一个的第一和第二臂部分。 每个肢体部分包括与至少一个主要开关元件串联连接的链节转换器。 每个链式转换器包括串联连接的多个模块，并且每个模块包括连接到至少一个能量存储装置的至少一个次级开关元件。 相应转换器肢体的每个肢体部分中的每个主要开关元件选择性地限定循环路径，其承载DC循环电流以调节相应链式转换器中的至少一个能量存储装置的能量水平。