Patent · US Active

Power semiconductor device and snubber circuit thereof

US10389230B2 · kind B2 · utility

1Cited by

7References

8Claims

0Family size

Assignee

General Electric Company · US

Inventors

Saijun Mao · Shanghai, CN
Stefan Schroeder · Garching bei München, DE
Jingkui Shi · Shanghai, CN
He Xu · Chengdu, CN
Marius Michael Mechlinski · Garching bei München, DE
Bo Qu · Suzhou, CN
Zhihui Yuan · Garching bei München, DE
Yingqi Zhang · Shanghai, CN
Jie Shen · New Berlin, US

Key dates

Filing date	Feb 23, 2018
Grant date	Aug 20, 2019
Priority date	—
Expiry date	Feb 23, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/348
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.