公开(公告)号：US11075545B2

公开(公告)日：2021-07-27

申请号：US16528306

申请日：2019-07-31

Applicant: General Electric Company

Inventor： Kapil Jha ,  Arun Kumar Raghunathan ,  Arvind Kumar Tiwari ,  Deepak Aravind

IPC: H02J50/12 ,  H02M3/337 ,  H02M3/335 ,  H02J50/80

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：US20200251931A1

公开(公告)日：2020-08-06

申请号：US16855619

申请日：2020-04-22

Applicant: General Electric Company

Inventor： Kapil Jha ,  Pradeep Vijayan ,  Yash Veer Singh

IPC: H02J50/10 ,  H04B5/00 ,  H01F38/14 ,  H02J50/80

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：US10715065B2

公开(公告)日：2020-07-14

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 ,  H02M5/458 ,  H02M7/48 ,  H02K7/18 ,  H02M7/49 ,  H02M5/22

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：US20190312502A1

公开(公告)日：2019-10-10

申请号：US15944828

申请日：2018-04-04

Applicant: General Electric Company

Inventor： Govardhan Ganireddy ,  Harold Robert Schnetzka ,  Robert Gregory Wagoner ,  Amy Marlene Ridenour ,  Kapil Jha ,  Yashomani Y. Kolhatkar ,  Arvind Kumar Tiwari

IPC: H02M1/12 ,  H02P9/00 ,  H02M5/458 ,  F03D9/25

Abstract: Systems and methods for operating a power system having a doubly fed induction generator are provided. In example implementations, an electrical power system connected to a power grid can include a generator comprising a stator and a rotor, the stator connected to the power grid via a stator power path, and a power converter. The power converter can include a line-side converter coupled to the power grid via a converter power path and a rotor-side converter coupled to a rotor bus of the rotor and the line-side converter via a DC link, the rotor-side converter configured to convert a DC power on the DC link to an AC signal for the rotor bus. The power system can also include an active filter comprising one or more active controlled components, the active filter being coupled in parallel with the rotor-side converter to reduce harmonics of the electrical power system.

公开(公告)号：US10027244B2

公开(公告)日：2018-07-17

申请号：US15188761

申请日：2016-06-21

Applicant: General Electric Company

Inventor： Yash Veer Singh ,  Arvind Kumar Tiwari ,  Scott Brian Wright ,  Kapil Jha

IPC: H02M7/06 ,  H02M7/217 ,  G08B21/18 ,  B60R16/02

Abstract: A power conditioning unit used in an electrical system. The power conditioning unit includes a positive bus and a negative bus that are electrically connected to a direct current load to enable supplying direct current electrical power to the direct current load; and a first phase leg, which includes a first diode electrically connected to the positive bus, a first transistor electrically connected to the negative bus, and a first node between the first diode and the first transistor. The first node is electrically connected to an alternating current power source to enable the first phase leg to receive a first phase of alternating current electrical power from the alternating current power source and the first transistor opens and closes to control flow of the first phase through the first phase leg to facilitate generating the direct current electrical power at a target voltage using the alternating current electrical power.