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：US20140153287A1

公开(公告)日：2014-06-05

申请号：US14088718

申请日：2013-11-25

Applicant: General Electric Company

Inventor： Saijun Mao

IPC: H02M7/797 ,  H02M5/458 ,  H02M3/335

CPC classification number: H02M7/797 ,  H02M3/335 ,  H02M5/458

Abstract: A power conversion system includes at least one switching unit. The switching unit includes a switching device including a channel and a body diode integrated with the channel. The switching device includes a first terminal, a second terminal, and a third terminal. The channel provides a positive direction current flow path to allow a positive direction current to flow through in response to a first turn-on switching control signal supplied to the first terminal. The body diode provides a first negative direction current flow path to allow a negative direction current to flow through in response to a first turn-off switching control signal. The channel provides a second negative direction current flow path to allow the negative direction current to flow through in response to a second turn-on switching control signal.

Abstract translation: 电力转换系统包括至少一个开关单元。 开关单元包括开关装置，其包括与通道集成的通道和体二极管。 开关装置包括第一端子，第二端子和第三端子。 通道提供正方向电流流动路径，以响应于提供给第一端子的第一导通开关控制信号，允许正方向电流流过。 体二极管提供第一负方向电流流动路径以允许负方向电流响应于第一关断开关控制信号而流过。 通道提供第二负方向电流流动路径，以允许负方向电流响应于第二导通开关控制信号流过。