公开(公告)号：US09991713B2

公开(公告)日：2018-06-05

申请号：US15117094

申请日：2014-02-19

Applicant: ABB SCHWEIZ AG

Inventor： Tomas Tengner ,  Christopher Townsend ,  Hector Zelaya de la Parra ,  Alireza Nami

IPC: H02M7/483 ,  H02J3/18 ,  H02J3/28 ,  H02J3/36

CPC classification number: H02J3/1857 ,  H02J3/28 ,  H02J3/36 ,  H02M7/483 ,  H02M2007/4835 ,  Y02E40/26 ,  Y02E60/60

Abstract: An energy storage system (ESS) for an electrical system includes an energy storage, and a converter interface arranged for connecting the energy storage to the electrical system. The converter interface includes a modular multilevel converter in which each phase leg includes a plurality of series connected cells of which at least one is a half-bridge cell and at least one is a full-bridge cell.

公开(公告)号：US10256745B2

公开(公告)日：2019-04-09

申请号：US15327755

申请日：2014-11-25

Applicant: ABB SCHWEIZ AG

Inventor： Alireza Nami ,  Jiaqi Liang ,  Frans Dijkhuizen ,  Liwei Wang

IPC: H02M1/32 ,  H02M7/483 ,  H02J3/18 ,  H02M1/12

Abstract: A multilevel converter converting between AC and DC includes a phase leg having a first and a second phase arm, the first phase arm being connected between a first pole having a first potential and a first AC terminal and the second phase arm being connected between the first AC terminal and a second potential, where the phase arms include half-bridge and full-bridge cells, where each cell includes at least one energy storage element for providing the voltage contribution and cell switching units with cell switches and anti-parallel diodes for controlling the voltage contribution, where the full-bridge cells include a bypass switch controllable to bypass the corresponding energy storage element, and when a phase-to-ground fault occurs the cell switches are blocked and the bypass switches activated with a delay in relation to the blocking.

公开(公告)号：US09929634B2

公开(公告)日：2018-03-27

申请号：US15502373

申请日：2014-08-08

Applicant: ABB Schweiz AG

Inventor： Alireza Nami ,  Christopher Townsend

IPC: H02J7/00 ,  G05F1/10 ,  G05F3/02 ,  H02M3/18 ,  H02M7/00 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M1/08 ,  H02M7/483 ,  H02M2001/0054 ,  H02M2007/4835

Abstract: A switching cell for a chain link includes a first side including a first terminal and a second terminal, a second side including a third terminal and a fourth terminal, a first switching unit, a second switching unit, and a first and a second capacitor unit. The first terminal is connected to the second terminal via the first capacitor unit. The first capacitor unit has its positive side facing the first terminal. The third terminal is connected to the fourth terminal via the second capacitor unit. The second capacitor has its positive side facing the fourth terminal. The second terminal is connected to the fourth terminal via the second switching unit. The switching cell also includes a third capacitor unit, and the first terminal is connected to the third terminal via a first series connection including the first switching unit and the third capacitor unit. The third capacitor unit has its positive side facing the third terminal. A switching module includes at least one such switching cell. The switching module can include at least two such switching cells, wherein the first switching cell and the second switching cell are connected in series in opposing directions, and wherein the second side of the first switching cell is connected to the second side of the second switching cell. A chain link including a number of switching modules in serial connection is also provided.

公开(公告)号：US09479076B2

公开(公告)日：2016-10-25

申请号：US14762176

申请日：2014-01-08

Applicant: ABB Schweiz AG

Inventor： Alireza Nami ,  Liwei Wang

IPC: H02M7/162 ,  H02M7/219 ,  H02M7/521 ,  H02M7/5388 ,  H02M7/483 ,  H02M1/00

CPC classification number: H02M7/162 ,  H02M7/219 ,  H02M7/483 ,  H02M7/521 ,  H02M7/5388 ,  H02M2001/0048 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: It is presented a converter cell (10a; 10b) arranged to be used in a high voltage multilevel converter. The converter cell comprises: an energy storage element (16a; 16b) and a plurality of switching elements (S1, . . . , S8). The plurality of switching elements comprises at least one thyristor (S3; S8) and a plurality of transistors (S1, S2, S4; S5, S6, S7). Each one of the at least one thyristor (S3; S8) is provided in a position for a switching element in the converter cell where, during normal operation of the converter cell, the at least one thyristor is in a continuous conducting state. This reduces the power losses of the converter cell. A corresponding multilevel converter and a method are also presented.

Abstract translation: 呈现出被布置成用于高电压多电平转换器的转换器单元（10a; 10b）。 转换器单元包括：能量存储元件（16a; 16b）和多个开关元件（S1，...，S8）。 多个开关元件包括至少一个晶闸管（S3; S8）和多个晶体管（S1，S2，S4; S5，S6，S7）。 所述至少一个晶闸管（S3; S8）中的每一个设置在所述转换器单元中的开关元件的位置，在所述转换器单元的正常操作期间，所述至少一个晶闸管处于连续导通状态。 这降低了转换器电池的功率损耗。 还提出了相应的多电平转换器和方法。

公开(公告)号：US10530272B2

公开(公告)日：2020-01-07

申请号：US16462661

申请日：2016-12-21

Applicant: ABB SCHWEIZ AG

Inventor： Praveen Kumar Barupati ,  Hongbo Jiang ,  Alireza Nami ,  Sasitharan Subramanian ,  Vishal Vekhande

IPC: H02M7/5387 ,  H02M7/483 ,  H02M7/487

Abstract: A voltage source converter includes a number of converter modules, one for each of a number of phases, connected in-series between two DC terminals. Each converter module includes an upper director valve in series with a lower director valve, where a junction between the two provides a primary AC terminal, an upper wayshaper section, a common waveshaper block and a lower waveshaper section in parallel with the valves, where the upper and lower waveshaper sections include multilevel cells and the common waveshaper block include at least one common waveshaper connected between the upper and lower waveshaper sections, a first switching element connected between a secondary AC terminal and the upper waveshaper section and a second switching element connected between the secondary AC terminal and the lower waveshaper section.