Inventor
QIAO LIFENG
CN16 patents
Patents
16 patentsUS10234880B1Mar 19, 2019
Active clamp circuit for power semiconductor switch and power converter using the same
DELTA ELECTRONICS SHANGHAI CO8 citations79
US10367496B2Jul 30, 2019
Gate voltage control circuit of insulated gate bipolar transistor and control method thereof
DELTA ELECTRONICS SHANGHAI CO5 citations73
US11921148B2Mar 5, 2024
Method and device for monitoring partial discharge
DELTA ELECTRONICS SHANGHAI CO0 citations61
US11336274B2May 17, 2022
Clamp circuit and power module using the same
DELTA ELECTRONICS SHANGHAI CO0 citations60
US10622986B2Apr 14, 2020
Gate voltage control circuit of insulated gate bipolar transistor and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations52
US12363819B2Jul 15, 2025
System for driving power devices
DELTA ELECTRONICS SHANGHAI CO0 citations51
US10943754B2Mar 9, 2021
Circuit breaker apparatus and system
DELTA ELECTRONICS SHANGHAI CO0 citations51
US9893525B1Feb 13, 2018
High-power conversion system
DELTA ELECTRONICS SHANGHAI CO0 citations51
US11515806B2Nov 29, 2022
Conversion device having reduced common-mode current
DELTA ELECTRONICS SHANGHAI CO0 citations50
US11509239B2Nov 22, 2022
Conversion device having reduced size and cost
DELTA ELECTRONICS SHANGHAI CO0 citations50
US12003192B2Jun 4, 2024
Converter and method for suppressing loop interference of converter
DELTA ELECTRONICS SHANGHAI CO0 citations49
US11063427B2Jul 13, 2021
DC transmission apparatus, surge control circuit and method
DELTA ELECTRONICS SHANGHAI CO0 citations49
US11824526B2Nov 21, 2023
Circuit and control method for preventing false turn-on of semiconductor switching device
DELTA ELECTRONICS SHANGHAI CO0 citations48
US11515777B2Nov 29, 2022
Cascaded conversion system and voltage equalizing control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations48
US10056821B2Aug 21, 2018
Power conversion system and method for suppressing the common-mode voltage thereof
DELTA ELECTRONICS SHANGHAI CO0 citations41
US10873253B2Dec 22, 2020
Discharge control method for bus capacitor in power converter
DELTA ELECTRONICS SHANGHAI CO0 citations39