Lifeng QIAO

Person

Shanghai, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Converter and method for suppressing loop interference of converter
- Patent number 12,003,192
- Issue date Jun 4, 2024
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Lifeng Qiao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and device for monitoring partial discharge
- Patent number 11,921,148
- Issue date Mar 5, 2024
- Delta Electronics (Shanghai) Co., Ltd.
- Lifeng Qiao
- G01 - MEASURING TESTING
Information Patent Grant
Circuit and control method for preventing false turn-on of semicond...
- Patent number 11,824,526
- Issue date Nov 21, 2023
- Delta Electronics (Shanghai) Co., Ltd.
- Lifeng Qiao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Cascaded conversion system and voltage equalizing control method th...
- Patent number 11,515,777
- Issue date Nov 29, 2022
- Delta Electronics (Shanghai) Co., Ltd.
- Xin Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Conversion device having reduced common-mode current
- Patent number 11,515,806
- Issue date Nov 29, 2022
- Delta Electronics (Shanghai) Co., Ltd.
- Teng Liu
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Conversion device having reduced size and cost
- Patent number 11,509,239
- Issue date Nov 22, 2022
- Delta Electronics (Shanghai) Co., Ltd.
- Teng Liu
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Clamp circuit and power module using the same
- Patent number 11,336,274
- Issue date May 17, 2022
- Delta Electronics (Shanghai) Co., Ltd.
- Lifeng Qiao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC transmission apparatus, surge control circuit and method
- Patent number 11,063,427
- Issue date Jul 13, 2021
- Delta Electronics (Shanghai) Co., Ltd.
- JianPing Ying
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Circuit breaker apparatus and system
- Patent number 10,943,754
- Issue date Mar 9, 2021
- Delta Electronics (Shanghai) Co., Ltd.
- Teng Liu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge control method for bus capacitor in power converter
- Patent number 10,873,253
- Issue date Dec 22, 2020
- Delta Electronics (Shanghai) Co., Ltd.
- Jianping Ying
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gate voltage control circuit of insulated gate bipolar transistor a...
- Patent number 10,622,986
- Issue date Apr 14, 2020
- Delta Electronics (Shanghai) Co., Ltd.
- Jianping Ying
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Gate voltage control circuit of insulated gate bipolar transistor a...
- Patent number 10,367,496
- Issue date Jul 30, 2019
- Delta Electronics (Shanghai) Co., Ltd.
- Jianping Ying
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Active clamp circuit for power semiconductor switch and power conve...
- Patent number 10,234,880
- Issue date Mar 19, 2019
- Delta Electronics (Shanghai) Co., Ltd.
- Wuying Li
- G05 - CONTROLLING REGULATING
Information Patent Grant
Power conversion system and method for suppressing the common-mode...
- Patent number 10,056,821
- Issue date Aug 21, 2018
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Teng Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High-power conversion system
- Patent number 9,893,525
- Issue date Feb 13, 2018
- Delta Electronics (Shanghai) Co., Ltd.
- Jianping Ying
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
POWER CONVERTER
- Publication number 20230216423
- Publication date Jul 6, 2023
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Lifeng QIAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONVERSION SYSTEM AND CONVERSION DEVICE
- Publication number 20230068564
- Publication date Mar 2, 2023
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Teng LIU
- B60 - VEHICLES IN GENERAL
Information Patent Application
METHOD AND DEVICE FOR MONITORING PARTIAL DISCHARGE
- Publication number 20230041663
- Publication date Feb 9, 2023
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Lifeng QIAO
- G01 - MEASURING TESTING
Information Patent Application
CIRCUIT AND CONTROL METHOD FOR PREVENTING FALSE TURN-ON OF SEMICOND...
- Publication number 20220337237
- Publication date Oct 20, 2022
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Lifeng QIAO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SYSTEM FOR DRIVING POWER DEVICES
- Publication number 20220330415
- Publication date Oct 13, 2022
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Lifeng Qiao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CONVERTER AND METHOD FOR SUPPRESSING LOOP INTERFERENCE OF CONVERTER
- Publication number 20220311353
- Publication date Sep 29, 2022
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Lifeng QIAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CASCADED CONVERSION SYSTEM AND VOLTAGE EQUALIZING CONTROL METHOD TH...
- Publication number 20220094257
- Publication date Mar 24, 2022
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Xin Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONVERSION DEVICE
- Publication number 20210376753
- Publication date Dec 2, 2021
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Teng LIU
- B60 - VEHICLES IN GENERAL
Information Patent Application
CONVERSION DEVICE
- Publication number 20210376739
- Publication date Dec 2, 2021
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Teng LIU
- B60 - VEHICLES IN GENERAL
Information Patent Application
CLAMP CIRCUIT AND POWER MODULE USING THE SAME
- Publication number 20210036695
- Publication date Feb 4, 2021
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Lifeng QIAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC TRANSMISSION APPARATUS, SURGE CONTROL CIRCUIT AND METHOD
- Publication number 20200244065
- Publication date Jul 30, 2020
- DELTA ELECTRONICS (Shanghai) CO., LTD.
- JianPing YING
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CIRCUIT BREAKER APPARATUS AND SYSTEM
- Publication number 20200219692
- Publication date Jul 9, 2020
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Teng LIU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GATE VOLTAGE CONTROL CIRCUIT OF INSULATED GATE BIPOLAR TRANSISTOR A...
- Publication number 20190280687
- Publication date Sep 12, 2019
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Jianping YING
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
GATE VOLTAGE CONTROL CIRCUIT OF INSULATED GATE BIPOLAR TRANSISTOR A...
- Publication number 20180269866
- Publication date Sep 20, 2018
- DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- Jianping YING
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DISCHARGE CONTROL METHOD FOR BUS CAPACITOR IN POWER CONVERTER
- Publication number 20180152097
- Publication date May 31, 2018
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Jianping YING
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION SYSTEM AND METHOD FOR SUPPRESSING THE COMMON-MODE...
- Publication number 20180041110
- Publication date Feb 8, 2018
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Teng LIU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HIGH-POWER CONVERSION SYSTEM
- Publication number 20180041035
- Publication date Feb 8, 2018
- DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
- Jianping YING
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Lifeng QIAO

Person

Patents Grantslast 30 patents

Converter and method for suppressing loop interference of converter

Method and device for monitoring partial discharge

Circuit and control method for preventing false turn-on of semicond...

Cascaded conversion system and voltage equalizing control method th...

Conversion device having reduced common-mode current

Conversion device having reduced size and cost

Clamp circuit and power module using the same

DC transmission apparatus, surge control circuit and method

Circuit breaker apparatus and system

Discharge control method for bus capacitor in power converter

Gate voltage control circuit of insulated gate bipolar transistor a...

Gate voltage control circuit of insulated gate bipolar transistor a...

Active clamp circuit for power semiconductor switch and power conve...

Power conversion system and method for suppressing the common-mode...

High-power conversion system

Patents Applicationslast 30 patents

POWER CONVERTER

CONVERSION SYSTEM AND CONVERSION DEVICE

METHOD AND DEVICE FOR MONITORING PARTIAL DISCHARGE

CIRCUIT AND CONTROL METHOD FOR PREVENTING FALSE TURN-ON OF SEMICOND...

SYSTEM FOR DRIVING POWER DEVICES

CONVERTER AND METHOD FOR SUPPRESSING LOOP INTERFERENCE OF CONVERTER

CASCADED CONVERSION SYSTEM AND VOLTAGE EQUALIZING CONTROL METHOD TH...

CONVERSION DEVICE

CONVERSION DEVICE

CLAMP CIRCUIT AND POWER MODULE USING THE SAME

DC TRANSMISSION APPARATUS, SURGE CONTROL CIRCUIT AND METHOD

CIRCUIT BREAKER APPARATUS AND SYSTEM

GATE VOLTAGE CONTROL CIRCUIT OF INSULATED GATE BIPOLAR TRANSISTOR A...

GATE VOLTAGE CONTROL CIRCUIT OF INSULATED GATE BIPOLAR TRANSISTOR A...

DISCHARGE CONTROL METHOD FOR BUS CAPACITOR IN POWER CONVERTER

POWER CONVERSION SYSTEM AND METHOD FOR SUPPRESSING THE COMMON-MODE...

HIGH-POWER CONVERSION SYSTEM