公开(公告)号：US20180123398A1

公开(公告)日：2018-05-03

申请号：US15794524

申请日：2017-10-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Kapil JHA ,  Arun Kumar RAGHUNATHAN ,  Arvind Kumar TIWARI ,  Deepak ARAVIND

IPC: H02J50/12 ,  H02M3/335

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/80 ,  H02M3/33569 ,  H02M3/337 ,  Y02B70/1433

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit for converting a first DC voltage of an input power to a first AC voltage, a contactless power transfer unit for transmitting the input power having the first AC voltage, and a second converting unit for transmitting the power having a second DC voltage corresponding to the first AC voltage to an electric load. Additionally, the wireless power transfer system includes an active voltage tuning unit for controlling the second DC voltage based on a difference between the second DC voltage and a reference voltage and at least one among a difference between the resonant frequency and the constant operating frequency and a difference between a phase angle of the first AC voltage and a phase angle of an AC current.

公开(公告)号：US20180175761A1

公开(公告)日：2018-06-21

申请号：US15835531

申请日：2017-12-08

Applicant: General Electric Company

Inventor： Kapil JHA ,  Arvind Kumar Tiwari ,  Saurabh Shukla ,  Olive Ray

IPC: H02P9/00 ,  H02K7/18

Abstract: A wind power generation system including a doubly fed induction generator (DFIG) of a wind turbine is presented. The DFIG includes a rotor and a stator, a rotor-side conversion unit coupled to the rotor, a direct current (DC) link, and at least one line-side conversion unit coupled to the rotor-side conversion unit via the DC link and coupled to the stator of the DFIG. The at least one line-side conversion unit includes exactly one first converter, high frequency transformers, and second converters, where each of the second converters is coupled to the first converter via a respective high frequency transformer, and inverters, where each of the inverters is coupled to a respective second converter and includes an alternative current (AC) phase terminal.

公开(公告)号：US20170222480A1

公开(公告)日：2017-08-03

申请号：US15420139

申请日：2017-01-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Kapil JHA ,  Pradeep VIJAYAN ,  Yash Veer SINGH

IPC: H02J50/10 ,  H02J7/02

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power. Also, the wireless power transfer system includes a second converting unit configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transfer system includes a switching unit configured to regulate the second DC voltage across the electric load if the second DC voltage across the electric load is greater than a voltage reference value.

公开(公告)号：US20180097351A1

公开(公告)日：2018-04-05

申请号：US15717855

申请日：2017-09-27

Applicant: General Electric Company

Inventor： Kapil JHA ,  Arvind Kumar TIWARI ,  Yash Veer SINGH ,  Olive RAY

IPC: H02H3/20 ,  H02H1/00 ,  H02H7/22 ,  H02J50/10 ,  H02M3/335

CPC classification number: H02H3/20 ,  H02H1/0007 ,  H02H7/22 ,  H02J50/10 ,  H02J50/12 ,  H02J50/80 ,  H02M3/335 ,  H02M3/33576

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to an AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to transmit the input power having the AC voltage. Also, the wireless power transfer system includes a second converting unit configured to convert the AC voltage to a second DC voltage and transmit the input power having the second DC voltage to an electric load. Additionally, the wireless power transfer system includes a switching unit configured to decouple the electric load from the contactless power transfer unit if the second DC voltage across the electric load is greater than a first threshold value.

公开(公告)号：US20170222479A1

公开(公告)日：2017-08-03

申请号：US15417246

申请日：2017-01-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Kapil JHA ,  Pradeep VIJAYAN ,  Yash Veer SINGH

IPC: H02J50/10 ,  B60L11/18 ,  H02J50/90 ,  H02J7/02

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power. Also, the wireless power transfer system includes a second converting unit configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transfer system includes a switching unit configured to decouple the second converting unit from the contactless power transfer unit if the second DC voltage across the electric load is greater than a first threshold value.