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1. 发明申请

WO2013068031A1 CONTROL CIRCUIT 审中-公开
标题翻译：控制电路
公开(公告)号：WO2013068031A1
公开(公告)日：2013-05-16
申请号：PCT/EP2011/069563
申请日：2011-11-07
申请人： ALSTOM TECHNOLOGY LTD , DAVIDSON, Colin, Charnock , TRAINER, David, Reginald , OKAEME, Nnamdi
发明人： DAVIDSON, Colin, Charnock , TRAINER, David, Reginald , OKAEME, Nnamdi
IPC分类号： H02J3/36
CPC分类号： H02M3/158 , H02H7/268 , H02J3/36 , H02M1/08 , H02M1/32 , H02M2007/4835 , Y02E60/60
摘要： There is a control circuit (30) comprising first and second DC terminals (32a, 32b) for connection to a DC network, the first and second DC terminals (32a, 32b) having a plurality of modules (34) and at least one energy conversion element (36) connected in series therebetween to define a current transmission path, the plurality of modules (34) defining a chain- link converter (44), each module (34) including at least one energy storage device (40), the or each energy storage device (40) 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 (36) and thereby remove energy from the DC network, the or each energy storage device (36) 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 (44).
摘要翻译：存在一种包括用于连接到DC网络的第一和第二DC端子（32a，32b）的控制电路（30），所述第一和第二DC端子（32a，32b）具有多个模块（34）和至少一个能量转换元件（36）串联连接以限定当前传输路径，所述多个模块（34）限定链式链接转换器（44），每个模块（34）包括至少一个能量存储装置（40）或每个能量存储装置（40）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和/或每个能量转换元件（36），从而从DC网络去除能量，所述或每个能量存储装置（36）可从所述当前传输路径选择性地移除，以调制所述电流波形以维持所述链式转换器（44）的能级的零净变化。

2. 发明申请

WO2012143060A1 IMPROVEMENTS IN OR RELATING TO THYRISTOR CLAMPED ASSEMBLIES 审中-公开
标题翻译：改进或相关于钳位夹紧组件
公开(公告)号：WO2012143060A1
公开(公告)日：2012-10-26
申请号：PCT/EP2011/056454
申请日：2011-04-21
申请人： ALSTOM TECHNOLOGY LTD , DAVIDSON, Colin, Charnock , TRAINER, David, Reginald
发明人： DAVIDSON, Colin, Charnock , TRAINER, David, Reginald
IPC分类号： H01L25/11 , H01L23/62 , H01L23/40 , G08B13/186
CPC分类号： H01L25/117 , H01L23/40 , H01L23/62 , H01L2924/0002 , H01L2924/00
摘要： A clamping failure detector assembly (30; 50; 70) comprises a frangible electromagnetic radiation conduit (32) that extends between first and second portions (34, 36) of at least one thyristor clamped assembly (10). The detector assembly (30; 50; 70) also includes a an electromagnetic radiation source (31) that is arranged in communication with a first end of the frangible conduit (32) and an electromagnetic radiation detector (33) that is arranged in communication with a second end of the frangible conduit (32). The frangible conduit (32) ruptures on movement of the first and second portions (34, 36) of the or each thyristor clamped assembly (10) away from one another to interrupt the transmission of electromagnetic radiation from the electromagnetic radiation source (31) to the electromagnetic radiation detector. The electromagnetic radiation detector (33) indicates a clamping failure when the electromagnetic radiation transmitted from the electromagnetic radiation source (31) is interrupted.
摘要翻译：夹紧失效检测器组件（30; 50; 70）包括在至少一个可控硅夹紧组件（10）的第一和第二部分（34,36）之间延伸的易碎电磁辐射导管（32）。检测器组件（30; 50; 70）还包括电磁辐射源（31），其布置成与易碎导管（32）的第一端相连通，电磁辐射探测器（33）被布置成与易碎管道（32）的第二端。易碎导管（32）在每个晶闸管夹紧组件（10）的第一和第二部分（34,36）的运动彼此远离时断裂，以中断电磁辐射从电磁辐射源（31）到电磁辐射探测器。当从电磁辐射源（31）发射的电磁辐射被中断时，电磁辐射检测器（33）表示夹紧故障。

3. 发明申请

WO2013071957A1 A POWER ELECTRONIC MODULE 审中-公开
标题翻译：电力电子模块
公开(公告)号：WO2013071957A1
公开(公告)日：2013-05-23
申请号：PCT/EP2011/070157
申请日：2011-11-15
申请人： ALSTOM TECHNOLOGY LTD , DAVIDSON, Colin, Charnock , TRAINER, David, Reginald
发明人： DAVIDSON, Colin, Charnock , TRAINER, David, Reginald
IPC分类号： H02M7/49
CPC分类号： H02M7/72 , H02M7/49 , H02M2001/325 , H02M2007/4835
摘要： In the field of voltage source converters which provide high voltage direct current (HVDC) power transmission and reactive power compensation there is a need for an improved power electronic module which exhibits high efficiency, provides a safe failure mode, and is tolerant of faults. A power electronic module (30; 70), for use in a chain-link converter of a voltage source converter providing high voltage direct current power transmission and reactive power compensation, comprises a first set (32) of series-connected switching elements connected in parallel with an energy storage device (34). The first set (32) of series-connected switching elements includes a first latching switching element (38) and a first non-latching switching element (40).
摘要翻译：在提供高压直流（HVDC）电力传输和无功补偿的电压源转换器领域中，需要一种改进的功率电子模块，其具有高效率，提供安全故障模式并且容忍故障。一种用于提供高压直流电力传输和无功功率补偿的电压源转换器的链式转换器的电力电子模块（30; 70）包括连接在一起的串联开关元件的第一组（32）与能量存储装置（34）平行。第一组（32）的串联开关元件包括第一闭锁开关元件（38）和第一非锁定开关元件（40）。

4. 发明申请

WO2013017177A1 A DC TO DC CONVERTER ASSEMBLY 审中-公开
标题翻译：直流到直流转换器总成
公开(公告)号：WO2013017177A1
公开(公告)日：2013-02-07
申请号：PCT/EP2011/064545
申请日：2011-08-24
申请人： ALSTOM TECHNOLOGY LTD , TRAINER, David, Reginald , OKAEME, Nnamdi
发明人： TRAINER, David, Reginald , OKAEME, Nnamdi
IPC分类号： H02M3/335 , H02J3/02
CPC分类号： H02M3/28 , H02M3/335 , H02M3/33576 , H02M7/483 , H02M2007/4835
摘要： 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 (30; 130; 140; 150; 160; 170), for connecting first and second high voltage DC power transmission networks, comprises an inverter (32; 152; 172) which has first and second terminals (34, 36) which are connectable in use to a first high voltage DC power transmission network (16). The inverter (32; 152; 172) is defined by a modular multilevel converter (38) which includes a first inverter limb (40) that extends between the first and second terminals (34, 36) and has first and second inverter limb portions (50, 52) that are separated by a third terminal (54). Each inverter limb portion (50, 52) includes at least one rationalised module (68) which has first and second sets (70, 72) of series-connected current flow control elements (74) that are connected in parallel with at least one energy storage device (76). Each set of current flow control elements (74) includes an active switching element (90) to selectively direct current through the energy storage device (76) and a passive current check element (82) to limit current flow through the rationalised module (68) to a single direction. The current flow control elements (74) and the or each energy storage device (76) combine to selectively provide a voltage source to synthesise an AC voltage (V AC ) at the third terminal (54). The DC to DC converter assembly (30; 130; 140; 150; 160; 170) also includes a rectifier (92; 142) that is electrically connected to the third terminal (54) of the inverter (32; 152) by a first link (98) and is connectable in use to a second high voltage DC power transmission network (18). The rectifier (92; 142) is configured to convert the AC voltage (V AC ) conveyed by the first link (98) into a second DC voltage (V 2 ) for supply to the second high voltage DC power transmission network (18).
摘要翻译：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DC输电网络的DC-DC转换器组件（30; 130; 140; 150; 160; 170）包括具有第一和第二端子（34; 152; 172）的逆变器，36），其可连接到第一高压直流输电网络（16）。逆变器（32; 152; 172）由模块化多电平转换器（38）限定，其包括在第一和第二端子（34,36）之间延伸的第一反相器臂（40），并且具有第一和第二反相器四肢部分 50，52），其被第三端子（54）分开。每个逆变器分支部分（50,52）包括至少一个合理化模块（68），其具有串联连接的电流流量控制元件（74）的第一和第二组（70,72），所述第一组和第二组（70,72）与至少一个能量存储装置（76）。每组电流流量控制元件（74）包括有源开关元件（90），用于选择性地引导电流通过能量存储装置（76）和无源电流检测元件（82），以限制通过合理化模块（68）的电流，到一个方向。电流控制元件（74）和每个能量存储装置（76）组合以选择性地提供电压源以在第三端子（54）处合成AC电压（VAC）。 DC-DC转换器组件（30; 130; 140; 150; 160; 170）还包括整流器（92; 142），该整流器通过第一和第二电源电连接到逆变器（32; 152）的第三端子链路（98），并且可连接到第二高压直流输电网络（18）。整流器（92; 142）被配置为将由第一链路（98）传送的AC电压（VAC）转换成用于提供给第二高压直流输电网络（18）的第二直流电压（V2）。

5. 发明申请

WO2010004239A1 A SYNCHRONOUS ELECTRICAL MACHINE 审中-公开
标题翻译：同步电机
公开(公告)号：WO2010004239A1
公开(公告)日：2010-01-14
申请号：PCT/GB2009/001185
申请日：2009-05-12
申请人： ROLLS-ROYCE PLC , CULLEN, John, James, Anthony , TRAINER, David, Reginald , LONG, Stephen, Andrew , MOODIE, Angus, George, Lewis
发明人： CULLEN, John, James, Anthony , TRAINER, David, Reginald , LONG, Stephen, Andrew , MOODIE, Angus, George, Lewis
IPC分类号： H02P9/10 , H02P9/30 , H02K19/16
CPC分类号： H02P25/22 , H02K3/28 , H02K11/048 , H02K21/16 , H02K29/03 , H02P9/105 , H02P9/30 , H02P2101/30
摘要： A synchronous electrical machine (40) comprises a plurality of phases (5OA, 5OB, 5OC, 5OD, 50E) and detecting means arranged to detect an open-circuit fault in at least one of the phases (50E) of the synchronous electrical machine (40). Isolating means is arranged to isolate the at least one phase (50E) of the synchronous electrical machine (40) with the fault. Phase shift means (52A, 52B, 52C, 52D, 52E) are arranged to produce a controlled phase shift between the voltage (emf) and the current within the remaining phases of the synchronous electrical machine (40) so as to adjust the phase angle of the second harmonic powers produced by the remaining phases (5OA, 5OB, 5OC, 50D) of the synchronous electrical machine (40) such that the vector sum of the second harmonic power vectors of the remaining phases of the synchronous electrical machine is zero to eliminate torque ripple. The phase shift means (52A, 52B, 52C, 52D) is arranged to adjust the phase angle of all the remaining phases (5OA, 5OB, 5OC, 50D) by the same predetermined angle to maximise the torque ripple-free power output of the synchronous electrical machine (40).
摘要翻译：同步电机（40）包括多个相（50A，50B，50C，50D，50E）和检测装置，其被配置为检测同步电机的至少一相（50E）中的开路故障（ 40）。隔离装置布置成将同步电机（40）的至少一个相（50E）与故障隔离。相位移动装置（52A，52B，52C，52D，52E）被布置成在电压（emf）和同步电机（40）的剩余相位内的电流之间产生受控的相移，以便调整相位角由同步电机（40）的剩余相（50A，50B，50C，50D）产生的二次谐波功率使得同步电机的剩余相位的二次谐波功率矢量的向量和为零消除扭矩波动。相位移动装置（52A，52B，52C，52D）被布置成将所有剩余相（50A，50B，50C，50D）的相位角调整相同的预定角度，以最大化无转矩同步电机（40）。

6. 发明申请

WO2009060168A1 CURRENT LIMITING DIODE AND METHOD OF MANUFACTURING THEREOF 审中-公开
标题翻译：限流二极管及其制造方法
公开(公告)号：WO2009060168A1
公开(公告)日：2009-05-14
申请号：PCT/GB2008/003381
申请日：2008-10-08
申请人： ROLLS-ROYCE PLC , PALETHORPE, Benjamin , TRAINER, David, Reginald , WRIGHT, Nicholas, George
发明人： PALETHORPE, Benjamin , TRAINER, David, Reginald , WRIGHT, Nicholas, George
IPC分类号： H01L29/861 , H01L21/04 , H01L29/417 , H01L23/367 , H01L21/768 , H01L29/24 , H01L29/45
CPC分类号： H01L29/861 , H01L21/76895 , H01L29/0657 , H01L29/1608 , H01L29/45 , H01L29/6606 , H01L2924/0002 , H01L2924/00
摘要： A current limiting diode (40) comprises a base of low n-type doped material (18), a column of low n-type doped material (16) projecting from the base of low n-type doped material (18). A layer of high n-type doped material (20) is arranged on the column (16) and the layer of the high n-type doped material (20) forms the source. A first metal layer (26) is arranged on the layer of high n-type doped material (20). A first layer of p-type doped material (22) is arranged on a vertical surface of the column (16), a second layer of p-type doped material (24) is arranged on an adjacent surface of the base (18) and the first and second layers of p-type doped material (22, 24) form the gate. A second metal layer (28) is arranged on the second layer of p-type doped material (24). An overlay metal layer (32) is arranged to cover the first metal layer (26), the second metal layer (28), the first layer of p-type doped material (22), the remaining vertical surfaces of the column (16) and the base (18) to electrically connect the source and the gate.
摘要翻译：限流二极管（40）包括低n型掺杂材料（18）的基极，从低n型掺杂材料（18）的基底突出的低n型掺杂材料（16）的列。一层高n型掺杂材料（20）被布置在该列（16）上，并且该高n型掺杂材料（20）的层形成该源。第一金属层（26）布置在高n型掺杂材料（20）的层上。第一层p型掺杂材料（22）布置在柱（16）的垂直表面上，第二层p型掺杂材料（24）布置在基底（18）的相邻表面上，并且第一和第二层p型掺杂材料（22,24）形成栅极。第二金属层（28）布置在第二层p型掺杂材料（24）上。覆盖金属层（32）被布置成覆盖第一金属层（26），第二金属层（28），第一层p型掺杂材料（22），列（16）的剩余垂直表面和基座（18）以电连接源极和栅极。

7. 发明申请

WO2009007671A2 A SYNCHRONOUS ELECTRICAL MACHINE 审中-公开
标题翻译：同步电机
公开(公告)号：WO2009007671A2
公开(公告)日：2009-01-15
申请号：PCT/GB2008/002054
申请日：2008-06-13
申请人： ROLLS-ROYCE PLC , TRAINER, David, Reginald , CULLEN, John, James, Anthony , MITCHAM, Alan, John , CROSS, Andrew, Mark , FORSYTH, Andrew, John , ABDEL-HAFEZ, Ahmed, Abdel-Malek
发明人： TRAINER, David, Reginald , CULLEN, John, James, Anthony , MITCHAM, Alan, John , CROSS, Andrew, Mark , FORSYTH, Andrew, John , ABDEL-HAFEZ, Ahmed, Abdel-Malek
IPC分类号： H02P9/00 , H02P29/02
CPC分类号： H02P9/00 , H02P9/006 , H02P25/22 , H02P29/0243 , H02P29/032 , H02P29/50 , H02P2101/30
摘要： A synchronous electrical machine comprising a plurality of phases, detecting means arranged to detect a fault in at least one of the phases of the synchronous electrical machine, isolating means arranged to isolate the at least one phase of the synchronous electrical machine with the fault, phase shift means arranged to produce a controlled phase shift between the voltage (emf) and the current within the remaining phases of the synchronous electrical machine to adjust the phase angle and magnitude of the second harmonic powers produced by the remaining phases of the synchronous electrical machine such that the vector sum of the second harmonic power vectors of the remaining phases of the synchronous electrical machine is zero.
摘要翻译：包括多个相的同步电机，布置成检测所述同步电机的至少一个相中的故障的检测装置，隔离装置，所述隔离装置布置成隔离所述同步电机的所述至少一个相具有故障的同步电机，相移装置被设置为在同步电机的剩余相内的电压（emf）和电流之间产生受控相移，以调整由同步电机的剩余相位产生的二次谐波功率的相角和幅值保持同步电机的剩余相位，使得同步电机的其余相的二次谐波功率矢量的矢量和为零。

8. 发明申请

WO2008023141A1 ELECTRICAL DISTRIBUTION NETWORKS 审中-公开
标题翻译：电气分配网络
公开(公告)号：WO2008023141A1
公开(公告)日：2008-02-28
申请号：PCT/GB2007/002812
申请日：2007-07-24
申请人： ROLLS-ROYCE PLC , INGHAM, Matthew , TRAINER, David, Reginald , GALLOWAY, Stuart, James , DYSKO, Adam
发明人： INGHAM, Matthew , TRAINER, David, Reginald , GALLOWAY, Stuart, James , DYSKO, Adam
IPC分类号： H02J3/14
CPC分类号： H02J3/14 , Y02B70/3225 , Y04S20/222
摘要： Safe operation of electrical power distribution systems necessitates consideration of the fault level in terms of the potential for electrical current flow upon an earth or other fault within the electrical power distribution system. Previously, electrical power systems have been analysed to provide theoretical fault levels values for different zones of an electrical power distribution system based upon a worse case scenario. However, existing electrical loads will in practice provide a more adaptable and higher fault level. By monitoring and identifying an I-V characteristic upon switching electrical load in practical operation an actual default level at particular nodes in a power distribution system is determinable . In such circumstances decisions with regard to the connectablilty of further electrical generators or loads at particular parts and zones of an electrical power distribution system can be quantified by reference to the actual fault level rather than the theoretical worse case scenario level and therefore avoid unnecessary upgrading of transmission equipment or denying access to the electrical power system.
摘要翻译：配电系统的安全运行需要考虑电力分配系统中地电或其他故障时的电流流动的故障等级。以前，已经分析了电力系统，以基于更糟糕的情况来为电力分配系统的不同区域提供理论故障水平值。然而，现有的电气负载将在实践中提供更适应性更高的故障级别。通过在实际操作中切换电气负载时监视和识别I-V特性，可以确定配电系统中的特定节点处的实际默认电平。在这种情况下，关于电力分配系统的特定部分和区域上的其他发电机或负载的连接性的决定可以通过参考实际故障水平而不是理论上的较差情况情景水平来量化，因此避免不必要的升级传输设备或拒绝接入电力系统。

9. 发明申请

WO2014173606A1 VOLTAGE SOURCE CONVERTER 审中-公开
标题翻译：电压源转换器
公开(公告)号：WO2014173606A1
公开(公告)日：2014-10-30
申请号：PCT/EP2014/056092
申请日：2014-03-26
申请人： ALSTOM TECHNOLOGY LTD
发明人： JASIM, Omar, Fadhel , TRAINER, David, Reginald , DYKE, Kevin, J.
IPC分类号： H02M3/155 , H02M7/483
CPC分类号： H02M3/158 , H02M3/155 , H02M7/483 , H02M2007/4835
摘要： A voltage source converter (10) comprises: first, second and third branches, each branch having first and second ends, the first ends of the first, second and third branches being connected to a junction (12) to form a star configuration in which the junction (12) defines a mid-point of the star configuration, the second end of each branch defining a DC terminal, the second ends of the second and third branches being connectable to a first DC voltage (V1), the second ends of the first and second branches being connectable to a second DC voltage (V2), the first branch including at least one first primary switching element (14), the second branch including at least one second primary switching element (16), the third branch including a primary inductive element (18), each of the first and second primary switching elements (14,16) being switchable to switch the corresponding branch into and out of circuit to transfer power between the first and second DC voltages (V1,V2); and a converter limb (22) connected in parallel with one of the first and second branches, the converter limb including an auxiliary converter (24), the auxiliary converter (24) being controllable to selectively provide a voltage source to modify a branch voltage across the branch connected in parallel with the converter limb (22), wherein the auxiliary converter (24) is a chain-link converter, the chain-link converter including a plurality of series-connected modules (26), each module (26) including at least one secondary switching element (28) and at least one energy storage device (30), the or each secondary switching element (28) and the or each energy storage device (30) in each module (26) combining to selectively provide a voltage source.
摘要翻译：电压源转换器（10）包括：第一，第二和第三分支，每个分支具有第一和第二端，第一，第二和第三分支的第一端连接到结（12）以形成星形结构，其中接头（12）限定了星形配置的中点，每个分支的第二端限定了一个直流端子，第二和第三分支的第二端可连接到第一直流电压（V1），第二端所述第一和第二分支可连接到第二直流电压（V2），所述第一分支包括至少一个第一初级开关元件（14），所述第二分支包括至少一个第二主开关元件（16），所述第三分支包括主电感元件（18），第一和第二初级开关元件（14,16）中的每一个可切换以将相应的分支切换到电路中以便在第一和第二DC电压（V1，V2）之间传递功率。以及与所述第一和第二分支中的一个并联连接的转换器臂（22），所述转换器臂包括辅助转换器（24），所述辅助转换器（24）可控制以选择性地提供电压源以修改跨越所述分支与所述转换器臂（22）并联连接，其中所述辅助转换器（24）是链式转换器，所述链式转换器包括多个串联连接的模块（26），每个模块（26）包括至少一个次级开关元件（28）和至少一个能量存储装置（30），每个模块（26）中的或每个次级开关元件（28）和/或每个能量存储装置（30）组合以选择性地提供电压源。

10. 发明申请

WO2015062975A1 VOLTAGE SOURCE CONVERTER 审中-公开
标题翻译：电压源转换器
公开(公告)号：WO2015062975A1
公开(公告)日：2015-05-07
申请号：PCT/EP2014/072786
申请日：2014-10-23
申请人： ALSTOM TECHNOLOGY LTD
发明人： TRAINER, David, Reginald , JASIM, Omar, Fadhel , DYKE, Kevin, James , CLARE, Jonathan, Charles
IPC分类号： H02M1/12 , H02M1/15 , H02J3/36 , H02M7/483
CPC分类号： H02M7/483 , H02J3/36 , H02J2003/365 , H02M1/12 , H02M1/15 , H02M2007/4835 , Y02E60/60
摘要： A voltage source converter (10) comprising first and second DC terminals (12,14) for connection to a DC electrical network (42) and at least one limb (16) connected between the first and second terminals (12,14). The limb (16) includes a phase element (18) having a plurality of switching elements (54) and at least one AC terminal for connection to an AC electrical network (30), the plurality of switching elements (54) being configured to be controllable to facilitate power conversion between the AC and DC electrical networks (30,42). The voltage source converter (10) also includes a tertiary sub-converter (32) connected in series with the phase element (18) in an electrical block. The tertiary sub-converter (32) is configured to be controllable to act as a waveform synthesizer to modify a first DC voltage presented to a DC side of the phase element (18). A quarternary sub-converter (36) is connected in series with the tertiary sub-converter (32), the quarternary sub-converter (36) being configured to be controllable to act as a waveform synthesizer to modify a second DC voltage presented to the DC electrical network (42). An auxiliary sub-converter (38) is connected in parallel with the electrical block and connected to a common connection point between the tertiary and quarternary sub- converters (32,36) to form a "T" arrangement. The auxiliary sub-converter (38) is configured to be controllable to act as a waveform synthesizer to modify the first and second DC voltages.
摘要翻译：一种电压源转换器（10），包括用于连接到DC电网（42）的第一和第二DC端子（12,14）和连接在第一和第二端子（12,14）之间的至少一个支路（16）。所述肢体（16）包括具有多个开关元件（54）和至少一个用于连接到AC电网（30）的AC端子的相位元件（18），所述多个开关元件（54）被配置为可控制以便于AC和DC电网之间的功率转换（30,42）。电压源转换器（10）还包括在电气块中与相元件（18）串联连接的第三子转换器（32）。第三子转换器（32）被配置为可控制以用作波形合成器，以修改呈现给相位元件（18）的DC侧的第一DC电压。第三副转换器（36）与第三子转换器（32）串联连接，所述第三副转换器（36）被配置为可控制以用作波形合成器，以修改向第直流电网（42）。辅助子转换器（38）与电气块并联连接并连接到第三级和第三级转换器（32,36）之间的公共连接点，以形成“T”排列。辅助子转换器（38）被配置为可控制以用作波形合成器以修改第一和第二DC电压。

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