公开(公告)号：US20170076849A1

公开(公告)日：2017-03-16

申请号：US15358573

申请日：2016-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanshen Hu ,  Yunfeng Liu ,  Fei Ye

IPC: H01F27/24 ,  H02M1/00

CPC classification number: H01F27/24 ,  H01F3/10 ,  H01F17/04 ,  H01F27/306 ,  H01F27/346 ,  H01F37/00 ,  H01F2027/348 ,  H02M1/00 ,  H02M2001/0083

Abstract: A coupled inductor and a power converter includes a magnetic core and at least two windings. The magnetic core includes at least two magnetic cylinders and two opposite magnet yokes. The at least two magnetic cylinders are disposed between the two opposite magnet yokes, the at least two windings are respectively wound around the at least two magnetic cylinders, the at least two windings are in a one-to-one correspondence with the at least two magnetic cylinders, and the at least two windings do not extend out of the two opposite magnet yokes in at least one direction, where each direction of the at least one direction is a direction perpendicular to side faces of the two opposite magnet yokes.

Abstract translation: 耦合电感器和功率转换器包括磁芯和至少两个绕组。 磁芯包括至少两个磁性圆筒和两个相对的磁轭。 所述至少两个磁性圆柱体设置在所述两个相对的磁轭之间，所述至少两个绕组分别缠绕在所述至少两个磁性圆柱体上，所述至少两个绕组与所述至少两个磁体圆筒形成一一对应关系 并且至少两个绕组在至少一个方向上不延伸出两个相对的磁轭，其中至少一个方向的每个方向是垂直于两个相对的磁轭的侧面的方向。

公开(公告)号：US09385632B2

公开(公告)日：2016-07-05

申请号：US14555808

申请日：2014-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanshen Hu ,  Grover Victor Torrico-Bascopé ,  Dianbo Fu ,  Yunfeng Liu

IPC: H02M7/5387 ,  H02M7/5395 ,  H02M7/487 ,  H02M7/49 ,  H02M1/12 ,  H02M1/00

CPC classification number: H02M7/5395 ,  H02M1/12 ,  H02M7/487 ,  H02M7/49 ,  H02M2001/0064 ,  H02M2001/007

Abstract: A multi-level inverter includes two N-level inverter units with pulse width modulation waves staggered by a phase of 180 degrees, and N is an integer greater than or equal to 3; a direct current power source module, where an output end thereof is connected to input ends of the two N-level inverter units; a transformer, where the transformer includes a primary side and a secondary side, an inductor of the primary side and an inductor of the secondary side are coupled, and one end of the inductor of the primary side and one end of the inductor of the secondary side are connected to output ends of the two N-level inverter units respectively. The two N-level inverter units are reversely coupled, and the other end of the inductor of the primary side and the other end of the inductor of the secondary side are connected.

Abstract translation: 多电平逆变器包括两个N级反相器单元，其中脉冲宽度调制波以180度相位交错，N为大于或等于3的整数; 直流电源模块，其输出端连接到两个N电平逆变器单元的输入端; 变压器，其中变压器包括初级侧和次级侧，初级侧的电感器和次级侧的电感器被耦合，并且次级侧的电感器的一端和电感器的一端的一端 侧分别连接到两个N电平逆变器单元的输出端。 两个N级逆变器单元反向耦合，并且次级侧的电感器的初级侧的另一端和另一端连接。

公开(公告)号：US20140376294A1

公开(公告)日：2014-12-25

申请号：US14340631

申请日：2014-07-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanshen Hu

IPC: H02M7/5387

CPC classification number: H02M7/487

Abstract: A single-phase inverter and a three-phase inverter are disclosed. The single-phase inverter includes a first and a second inverting topology unit, a first and a second direct-current voltage boost circuit, and four diodes. The first inverting topology unit is connected between a positive output end and a negative output end of the direct-current power supply; the second inverting topology unit is connected between a cathode of a diode and an anode of another diode; and a middle point of the first inverting topology unit is connected to a middle point of the second inverting topology unit and serves as an alternating-current output end of the single-phase inverter. The first and the second inverting topology unit work in a parallel structure to reduce a conduction loss of a switching transistor when the direct-current power supply outputs a high voltage.

Abstract translation: 公开了一种单相逆变器和三相逆变器。 单相逆变器包括第一和第二反相拓扑单元，第一和第二直流升压电路以及四个二极管。 第一反相拓扑单元连接在直流电源的正输出端和负输出端之间; 第二反相拓扑单元连接在二极管的阴极和另一个二极管的阳极之间; 并且第一反向拓扑单元的中点连接到第二反相拓扑单元的中点，并且用作单相逆变器的交流输出端。 当直流电源输出高电压时，第一和第二反相拓扑单元工作在并联结构中，以减小开关晶体管的导通损耗。

公开(公告)号：US20170076850A1

公开(公告)日：2017-03-16

申请号：US15360572

申请日：2016-11-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunfeng Liu ,  Fei Ye ,  Yanshen Hu

IPC: H01F27/255 ,  G05F3/02

CPC classification number: H01F27/255 ,  G05F3/02 ,  H01F3/12 ,  H01F38/08 ,  H01F2003/106 ,  H02M1/00

Abstract: A coupled inductor and a power converter. The coupled inductor includes a magnetic core and at least two windings. The magnetic core includes at least two first magnetic cylinders, at least one second magnetic cylinder, and two opposite magnet yokes. The at least two first magnetic cylinders and the at least one second magnetic cylinder are disposed between the two opposite magnet yokes, the at least two windings are respectively located on the at least two first magnetic cylinders, and the at least two windings are in a one-to-one correspondence with the at least two first magnetic cylinders. Leakage inductance of the coupled inductor is increased by adding a second magnetic cylinder between the opposite magnet yokes of the coupled inductor, thereby meeting a requirement of system stability when the coupled inductor is connected to the power converter.

Abstract translation: 耦合电感和功率转换器。 耦合电感器包括磁芯和至少两个绕组。 磁芯包括至少两个第一磁性圆筒，至少一个第二磁性圆筒和两个相对的磁轭。 所述至少两个第一磁性圆筒和所述至少一个第二磁性圆筒设置在所述两个相对的磁轭之间，所述至少两个绕组分别位于所述至少两个第一磁性圆柱体上，并且所述至少两个绕组处于 与至少两个第一磁性圆筒一一对应。 通过在耦合电感器的相对的磁轭之间增加第二磁筒来增加耦合电感器的漏电感，从而当耦合电感器连接到功率转换器时满足系统稳定性的要求。

公开(公告)号：US20150062984A1

公开(公告)日：2015-03-05

申请号：US14542302

申请日：2014-11-14

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Yanshen Hu ,  Yunfeng Liu ,  Lei Shi

IPC: H02M7/49 ,  H02M7/493

CPC classification number: H02M7/49 ,  H02M1/12 ,  H02M7/23 ,  H02M7/487 ,  H02M7/493 ,  H02M2001/0064

Abstract: A power converter, includes a first terminal and a second terminal which are connected to a direct current; a third terminal connected to an alternating current; N multi-level bridge arms connected in parallel to the first terminal and the second terminal, where the N multi-level bridge arms work in a parallel-interleaved manner, each multi-level bridge arm of the N multi-level bridge arms includes an alternating current node, and multiple time-varying levels are generated at the alternating current node, where the multiple levels are more than two levels; and a coupling inductor, including N windings coupled by one common magnetic core, where one end of each winding of the N windings is connected to an alternating current node of one multi-level bridge arm of the N multi-level bridge arms, and the other end of each winding of the N windings is connected to the third terminal.

Abstract translation: 功率转换器包括连接到直流电的第一端子和第二端子; 连接到交流电的第三端子; N个多电平桥臂与第一端子和第二端子并联连接，其中N个多电平桥臂以并行交错的方式工作，N个多电平桥臂的每个多电平桥臂包括一个 交流节点和多个时变电平在交流电节点处产生，其中多个电平超过两个电平; 以及耦合电感器，包括通过一个公共磁芯耦合的N个绕组，其中N个绕组的每个绕组的一端连接到N个多电平桥臂的一个多电平桥臂的交流节点，并且 N绕组的每个绕组的另一端连接到第三端子。

公开(公告)号：US09787217B2

公开(公告)日：2017-10-10

申请号：US14542302

申请日：2014-11-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanshen Hu ,  Yunfeng Liu ,  Lei Shi

IPC: H02M7/49 ,  H02M7/493 ,  H02M1/12 ,  H02M7/23 ,  H02M7/487 ,  H02M1/00

CPC classification number: H02M7/49 ,  H02M1/12 ,  H02M7/23 ,  H02M7/487 ,  H02M7/493 ,  H02M2001/0064

Abstract: A power converter, includes a first terminal and a second terminal which are connected to a direct current; a third terminal connected to an alternating current; N multi-level bridge arms connected in parallel to the first terminal and the second terminal, where the N multi-level bridge arms work in a parallel-interleaved manner, each multi-level bridge arm of the N multi-level bridge arms includes an alternating current node, and multiple time-varying levels are generated at the alternating current node, where the multiple levels are more than two levels; and a coupling inductor, including N windings coupled by one common magnetic core, where one end of each winding of the N windings is connected to an alternating current node of one multi-level bridge arm of the N multi-level bridge arms, and the other end of each winding of the N windings is connected to the third terminal.

公开(公告)号：US09479071B2

公开(公告)日：2016-10-25

申请号：US14662708

申请日：2015-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Shi ,  Yunfeng Liu ,  Yanshen Hu

IPC: H02M7/493 ,  H02M3/335 ,  H02M7/487 ,  H02M7/49 ,  H02M1/12 ,  H02M1/00

CPC classification number: H02M3/33569 ,  H02M1/126 ,  H02M7/487 ,  H02M7/49 ,  H02M7/493 ,  H02M2001/0064 ,  H02M2001/0077

Abstract: A multilevel converter includes at least one converting unit, where the converting unit includes N interleaved parallel bridge arms which enable the converting unit to output 2[(M−1×)N]+1 level signals, where N is an integer greater than or equal to 3, M is the number of levels received by the converting unit, and M is an integer greater than or equal to 3; a direct current inputting unit that supplies the direct current to the converting unit; a voltage dividing unit, where an input end of the voltage dividing unit is connected to an output of the direct current inputting unit, and an output end of the voltage dividing unit is connected to an input end of the converting unit; and at least one filtering unit, where the filtering unit is connected to the converting unit to output an alternating current.

Abstract translation: 多电平转换器包括至少一个转换单元，其中转换单元包括N个交错并联桥臂，其使得转换单元能够输出2 [（M-1×）N] +1电平信号，其中N是大于或 等于3，M是转换单元接收的电平数，M是大于或等于3的整数; 直流输入单元，其将直流电流提供给转换单元; 分压单元的输入端连接到直流输入单元的输出端，分压单元的输出端连接到转换单元的输入端;分压单元， 以及至少一个滤波单元，其中滤波单元连接到转换单元以输出交流电。

公开(公告)号：US20150270789A1

公开(公告)日：2015-09-24

申请号：US14662708

申请日：2015-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Shi ,  Yunfeng Liu ,  Yanshen Hu

IPC: H02M7/68

CPC classification number: H02M3/33569 ,  H02M1/126 ,  H02M7/487 ,  H02M7/49 ,  H02M7/493 ,  H02M2001/0064 ,  H02M2001/0077

Abstract: A multilevel converter includes at least one converting unit, where the converting unit includes N interleaved parallel bridge arms which enable the converting unit to output 2[(M−1×)N]+1 level signals, where N is an integer greater than or equal to 3, M is the number of levels received by the converting unit, and M is an integer greater than or equal to 3; a direct current inputting unit that supplies the direct current to the converting unit; a voltage dividing unit, where an input end of the voltage dividing unit is connected to an output of the direct current inputting unit, and an output end of the voltage dividing unit is connected to an input end of the converting unit; and at least one filtering unit, where the filtering unit is connected to the converting unit to output an alternating current.

Abstract translation: 多电平转换器包括至少一个转换单元，其中转换单元包括N个交错并联桥臂，其使得转换单元能够输出2 [（M-1×）N] +1电平信号，其中N是大于或 等于3，M是转换单元接收的电平数，M是大于或等于3的整数; 直流输入单元，其将直流电流提供给转换单元; 分压单元的输入端连接到直流输入单元的输出端，分压单元的输出端连接到转换单元的输入端;分压单元， 以及至少一个滤波单元，其中滤波单元连接到转换单元以输出交流电。