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.

公开(公告)号：US20180287487A1

公开(公告)日：2018-10-04

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 ,  H02M3/158

CPC classification number: H02M1/34 ,  H02M3/158 ,  H02M2001/344 ,  H02M2001/348 ,  H03K17/08142 ,  H03K17/102

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.

公开(公告)号：US20160156276A1

公开(公告)日：2016-06-02

申请号：US14555956

申请日：2014-11-28

Applicant: General Electric Company

Inventor： Zhihui Yuan ,  Qingyun Chen ,  Stefan Schroeder ,  Jie Shen

IPC: H02M5/44

CPC classification number: H02M5/44 ,  H02M1/36 ,  H02M5/45 ,  H02M7/483 ,  H02M2007/4835

Abstract: An electrical circuit for a power converter includes a first switching device proximate an AC source. The circuit also includes a voltage measurement device proximate a DC link and extends between the AC source and the DC link. The circuit further includes a DC voltage source and a first capacitive device. The first capacitive device is positioned between the first switching device and the voltage measurement device. The circuit further includes a second switching device positioned between the first capacitive device and the voltage measurement device. The circuit also includes a controller operatively coupled to the DC voltage source, the voltage measurement device, and the switching devices. The controller is configured to open the second switching device when a measured voltage signal generated by the voltage measurement device is substantially representative of a reference voltage value.

Abstract translation: 用于功率转换器的电路包括靠近AC电源的第一开关装置。 电路还包括靠近DC链路的电压测量装置，并且在AC源和DC链路之间延伸。 电路还包括直流电压源和第一电容性装置。 第一电容器件位于第一开关器件和电压测量器件之间。 该电路还包括位于第一电容性装置和电压测量装置之间的第二开关装置。 电路还包括可操作地耦合到DC电压源，电压测量装置和开关装置的控制器。 当由电压测量装置产生的测量电压信号基本上代表参考电压值时，控制器被配置为打开第二开关装置。

公开(公告)号：US09252670B2

公开(公告)日：2016-02-02

申请号：US13719259

申请日：2012-12-19

Applicant: General Electric Company

Inventor： Stefan Schroeder ,  Jie Shen ,  Samir Soua

IPC: H02M3/335 ,  H02M7/537 ,  H02M7/521 ,  H02M7/483 ,  H02M7/487

CPC classification number: H02M3/33507 ,  H02M1/36 ,  H02M3/335 ,  H02M7/483 ,  H02M7/487 ,  H02M7/521 ,  H02M7/537 ,  H02M2007/4835

Abstract: A power converter is presented. The power converter includes at least one leg operatively coupled between a first bus and a second bus and includes a first string including a plurality of non-controllable semiconductor switches, a first node, a second node, and a third node, where the first node is coupled to a third bus, one or more second strings, where each of the one or more second strings includes at least one fully controllable semiconductor switch, and where one of the second strings is coupled between the first node and the third bus and another second string is coupled between the second node and the third node, and one or more third strings, where each of the one or more third strings includes at least one energy storage device and is coupled to the first string, the one or more second strings, or a combination thereof.

Abstract translation: 介绍了一种电源转换器。 功率转换器包括可操作地耦合在第一总线和第二总线之间的至少一个支路，并且包括包括多个不可控半导体开关，第一节点，第二节点和第三节点的第一串，其中第一节点 耦合到第三总线，一个或多个第二串，其中所述一个或多个第二串中的每一个包括至少一个完全可控的半导体开关，并且其中第二串中的一个耦合在第一节点和第三总线之间，另一个 第二串耦合在第二节点和第三节点之间，以及一个或多个第三串，其中一个或多个第三串中的每一个包括至少一个能量存储设备并且耦合到第一串，所述一个或多个第二串 ，或其组合。

公开(公告)号：US20150249402A1

公开(公告)日：2015-09-03

申请号：US14193525

申请日：2014-02-28

Applicant: General Electric Company

Inventor： Piniwan Thiwanka Bandara Wijekoon ,  Christof Martin Sihler ,  Stefan Schroeder ,  Jie Shen ,  Pierluigi Tenca

IPC: H02M7/06 ,  H02M1/12 ,  H02M5/04 ,  H02M1/14

CPC classification number: H02M7/06 ,  H02J3/36 ,  H02M1/12 ,  H02M1/14 ,  H02M5/04 ,  H02M7/48 ,  Y02E60/60

Abstract: A DC power transmission system is configured to generate an electric field including components substantially constant with respect to time and varying with time. The DC power transmission system includes an AC stage configured to receive AC electrical power. The AC stage includes a transformer including primary windings and secondary windings configured to be electromagnetically coupled to, and electrically isolated from, each other. The AC stage also includes an AC/AC converter having substantially no insulating features against the at least one substantially constant component of the electric field. The AC/AC converter is electrically coupled to the primary windings. The DC power transmission system also includes an AC/DC conversion stage positioned downstream of the AC stage. The AC/DC conversion stage includes an AC/DC rectifier configured to convert AC electrical power to DC electrical power without external control. The AC/DC rectifier is coupled to the secondary windings.

Abstract translation: 直流电力传输系统被配置为产生包括相对于时间基本上恒定且随时间变化的分量的电场。 直流电力传输系统包括被配置为接收AC电力的AC级。 AC级包括变压器，其包括初级绕组和次级绕组，其被配置为电磁耦合到彼此并且彼此电隔离。 AC级还包括AC / AC转换器，其基本上没有与电场的至少一个基本恒定的分量相对的绝缘特性。 AC / AC转换器电耦合到初级绕组。 直流电力传输系统还包括位于AC级下游的AC / DC转换级。 AC / DC转换级包括AC / DC整流器，被配置为在没有外部控制的情况下将AC电力转换为DC电力。 AC / DC整流器耦合到次级绕组。