公开(公告)号：US20140085953A1

公开(公告)日：2014-03-27

申请号：US14031778

申请日：2013-09-19

Applicant: General Electric Company

Inventor： Saijun Mao

IPC: H02M7/537

CPC classification number: H02M7/537 ,  H02M7/003 ,  H02M7/797 ,  Y02B70/1483

Abstract: A power conversion system includes a filter unit, a DC/DC converter, a DC link, an inverter, a control unit, and a traction motor. The DC/DC converter is used for boosting DC voltage of a DC source and electrically coupled to the DC source through the filter unit. The DC/DC converter includes multiple SiC MOSFETs configured in a synchronous rectification mode by channel reverse conduction control. The inverter is used for converting the boosted DC voltage from the converter to multi-phase AC voltage through the DC link. The control unit is used for providing PWM commands to the converter and the inverter, to convert the DC voltage to AC voltage configured to drive an AC driven device.

Abstract translation: 电力转换系统包括滤波器单元，DC / DC转换器，DC链路，逆变器，控制单元和牵引电动机。 DC / DC转换器用于升压直流电源的直流电压，并通过滤波器单元电耦合到直流电源。 DC / DC转换器包括通过通道反向导通控制在同步整流模式下配置的多个SiC MOSFET。 逆变器用于通过直流链路将转换器的升压直流电压转换为多相交流电压。 该控制单元用于向转换器和逆变器提供PWM指令，将直流电压转换为配置为驱动交流驱动装置的交流电压。

公开(公告)号：US20190245426A1

公开(公告)日：2019-08-08

申请号：US16238237

申请日：2019-01-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Saijun Mao

IPC: H02M1/00 ,  H02M3/335

CPC classification number: H02M1/00 ,  H02M3/33569 ,  H02M2001/0054

Abstract: A power converter comprising an inverter and a first voltage multiplier. The inverter is configured to convert a first DC voltage into a first AC voltage. The first voltage multiplier is coupled with an output of the inverter and configured to convert the first AC voltage into a second DC voltage higher than a peak value of the first AC voltage. The first voltage multiplier comprises a plurality of stages, wherein the first voltage step is closer to the input of the first voltage multiplier than the other voltage steps in terms of energy transmission, each stage comprising two diodes, and each diode in a first stage of the plurality of stages comprises at least one of a silicon carbide diode and a gallium nitride diode. Embodiments of the present invention also relate to a power converting method.

公开(公告)号：US09369060B2

公开(公告)日：2016-06-14

申请号：US13733925

申请日：2013-01-04

Applicant: General Electric Company

Inventor： Saijun Mao ,  Denis Perrillat-Amede ,  Philippe Ernest ,  Niranjan Kumar ,  Xu Chu

IPC: H01J35/02 ,  H02M7/10 ,  H05G1/10

CPC classification number: H02M7/103 ,  H01J35/025 ,  H05G1/10

Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high-voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.

Abstract translation: 发电系统包括用于接收低电压交流电的输入和耦合到输入的数个N个电压转换模块，每个电压转换模块串联电连接。 每个电压转换模块包括被配置为将低压交流电转换成高压交流电的变压器。 每个电压转换模块包括被配置为将来自变压器的高压交流电转换成高压直流电的乘法器。 乘法器包括正乘数和负乘数。 正乘法器部分和负乘法器部分各自包括与变换并联连接的一对输入端子以及包括单个二极管和电容器组件的至少一个乘法器级。 数字N是4到24之间的偶数。

公开(公告)号：US10862402B2

公开(公告)日：2020-12-08

申请号：US16238237

申请日：2019-01-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Saijun Mao

IPC: H02M7/10 ,  H02M3/335 ,  H02M1/00 ,  H02M7/48

Abstract: According to various embodiments, a system and method for a power converter including an inverter and a first voltage multiplier is disclosed. The inverter is configured to convert a first DC voltage into a first AC voltage. The first voltage multiplier is coupled to an output of the inverter and configured to convert the first AC voltage into a second DC voltage higher than a peak value of the first AC voltage. The first voltage multiplier includes a plurality of stages, each stage including two diodes, and each diode in a first stage of the plurality of stages including at least one of a silicon carbide diode and a gallium nitride diode.

公开(公告)号：US09537423B2

公开(公告)日：2017-01-03

申请号：US14031778

申请日：2013-09-19

Applicant: General Electric Company

Inventor： Saijun Mao

IPC: H02M7/00 ,  H02M7/537 ,  H02M7/797

CPC classification number: H02M7/537 ,  H02M7/003 ,  H02M7/797 ,  Y02B70/1483

Abstract: A power conversion system includes a filter unit, a DC/DC converter, a DC link, an inverter, a control unit, and a traction motor. The DC/DC converter is used for boosting DC voltage of a DC source and electrically coupled to the DC source through the filter unit. The DC/DC converter includes multiple SiC MOSFETs configured in a synchronous rectification mode by channel reverse conduction control. The inverter is used for converting the boosted DC voltage from the converter to multi-phase AC voltage through the DC link. The control unit is used for providing PWM commands to the converter and the inverter, to convert the DC voltage to AC voltage configured to drive an AC driven device.

Abstract translation: 电力转换系统包括滤波器单元，DC / DC转换器，DC链路，逆变器，控制单元和牵引电动机。 DC / DC转换器用于升压直流电源的直流电压，并通过滤波器单元电耦合到直流电源。 DC / DC转换器包括通过通道反向导通控制在同步整流模式下配置的多个SiC MOSFET。 逆变器用于通过直流链路将转换器的升压直流电压转换为多相交流电压。 该控制单元用于向转换器和逆变器提供PWM指令，将直流电压转换为配置为驱动交流驱动装置的交流电压。

公开(公告)号：US20180342349A1

公开(公告)日：2018-11-29

申请号：US15987666

申请日：2018-05-23

Applicant: General Electric Company

Inventor： Saijun Mao ,  Bo Qu ,  Jingkui Shi ,  He Xu ,  Jie Shen ,  Tingting Song ,  Zhihui Yuan ,  Xin Jiang ,  Xi Lu ,  Stefan Schroeder ,  Marius Michael Mechlinski

IPC: H01F38/14 ,  H05K1/18 ,  H01F27/28 ,  H01F27/24 ,  H03K17/687

Abstract: An integrated system for signal and power transmission with galvanic isolation is disclosed. The integrated system comprises an insulative layer having a primary side and a secondary side; a planar signal transformer and a planar power transformer for signal and power transmission between the primary and the secondary sides of the insulative layer respectively. The planar signal transformer comprises two signal coupling elements which are disposed on the primary and the secondary sides of the insulative layer respectively. The planar power transformer includes two power coupling elements which are disposed on the primary and the secondary sides of the insulative layer respectively. Each of the two signal coupling elements and the two power coupling elements is embedded in at least one layer of a multi-layer printed circuit board. The integrated system of the present disclosure has a compact structure and is suitable for automatic assembly and manufacturing.

公开(公告)号：US09455580B2

公开(公告)日：2016-09-27

申请号：US14321935

申请日：2014-07-02

Applicant: General Electric Company

Inventor： Saijun Mao ,  Huiqing Wu ,  Herman Lucas Norbert Wiegman ,  Qunjian Huang ,  Ying Mei

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0016 ,  H02J7/0019 ,  Y02T10/7055

Abstract: A battery system has a battery module including a number M of series-connected batteries. The battery system is further provided with a number N (1

Abstract translation: 电池系统具有包括M个串联电池的电池模块。 电池系统还设置有数个N（1≤N≤M）的电荷均衡器，每个电荷均一次连接到电池，使得电池被充电和/或放电以实现电荷均衡。 控制装置被配置为基于电池的充电状态（SOC）来确定每个电池是否需要充电均衡，比较需要电荷均衡的电池数量L和数量M，并且基于比较结果 导致关闭电池系统，或者要求电荷均衡的一个或多个电池连接到相应的电荷均衡器。 选择开关模块用于将需要电荷均衡的一个或多个电池分别连接到相应的电荷均衡器。

公开(公告)号：US11555380B2

公开(公告)日：2023-01-17

申请号：US16608030

申请日：2018-04-24

Applicant: General Electric Company

Inventor： Saijun Mao ,  Yunzheng Chen ,  Yi Liao ,  Xuele Qi ,  Ming Xue ,  Stewart Blake Brazil

IPC: E21B41/00 ,  F03B13/02 ,  F03B13/10 ,  H02K7/18 ,  H02K11/00 ,  H02K11/04

Abstract: A downhole power generation includes a power generation module for providing power to a load. A turbine is driven by flow of a downhole fluid to rotate. A generator is coupled with the turbine for converting rotational energy from the turbine to electrical energy, and an AC-DC rectifier is coupled with the generator for converting an alternating voltage from the generator to a direct voltage. A power conversion circuit couples the AC-DC rectifier with the load. The power conversion circuit is configured for providing a first power to the load when the load is in a working mode and providing a second power to the load when the load is in a non-working mode. The second power is less than the first power. A downhole power generation method is also disclosed.

公开(公告)号：US11454094B2

公开(公告)日：2022-09-27

申请号：US16608009

申请日：2018-04-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yunzheng Chen ,  Yi Liao ,  Saijun Mao ,  Ming Xue ,  Stewart Blake Brazil ,  Xuele Qi

IPC: F03B13/02 ,  F03B15/00 ,  H02P9/04 ,  H02P101/10 ,  E21B41/00

Abstract: A downhole power generation system is disclosed, which includes a turbine generator system. The turbine generator system includes a turbine, a generator coupled with the turbine and having an AC-DC rectifier, and an optimized power control unit. The turbine is driven by flow of a downhole fluid to rotate. The generator converts rotational energy from the turbine to electrical energy and outputting a direct current voltage. The turbine generator system is coupled to a load via the optimized power control unit. The optimized power control unit controls to regulate an output voltage of the generator and provides a regulated output voltage to the load so that the turbine generator system has an optimized power output. An optimized power control method for a downhole power generation system is also disclosed.

公开(公告)号：US10389230B2

公开(公告)日：2019-08-20

申请号：US15903710

申请日：2018-02-23

Applicant: General Electric Company

Inventor： Saijun Mao ,  Stefan Schroeder ,  Jingkui Shi ,  He Xu ,  Marius Michael Mechlinski ,  Bo Qu ,  Zhihui Yuan ,  Yingqi Zhang ,  Jie Shen

IPC: H02M1/34 ,  H03K17/0814 ,  H03K17/10 ,  H02M3/158

Abstract: The present disclosure relates to a snubber circuit which comprises a static snubber unit, connected in parallel with the switch, for balancing a static voltage sharing across a switch when the switch is in a state of turn-on or turn-off; and a dynamic snubber unit for balance a dynamic voltage sharing across the switch when the switch is in a process of turn-on or turn-off, comprising a dynamic voltage sharing capacitor connected in parallel with the switch and having a relationship between a capacitance and a voltage of the dynamic voltage sharing capacitor; and a controller for controlling the capacitance of the dynamic voltage sharing capacitor to be in a predetermined working area of capacitance rising while the voltage across the switch is increasing. The present disclosure also relates to a power semiconductor device.