公开(公告)号：US10746816B2

公开(公告)日：2020-08-18

申请号：US15888207

申请日：2018-02-05

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Douglas John Link ,  Scott Walterman ,  Randy Hladilek ,  Timothy Strait ,  Margaret Wiza ,  Melissa Freeman

IPC: G01R33/36 ,  G01R33/00 ,  G01R33/44 ,  G01R33/385

Abstract: A system for removing energy from an electrical choke is provided. The system includes one or more cores, at least one inductive coupling, and a resistor. The one or more cores are configured to form part of the electrical choke by generating magnetic energy. The at least one inductive coupling is operative to convert the magnetic energy into electrical energy. The resistor is electrically connected to the at least one inductive coupling and operative to dissipate the electrical energy as heat.

公开(公告)号：US20170276730A1

公开(公告)日：2017-09-28

申请号：US15471555

申请日：2017-03-28

Applicant: General Electric Company

Inventor： Juan Antonio Sabate ,  Louis Frigo ,  Pengcheng Zhu ,  Melissa Freeman ,  Margaret Wiza ,  Syedsaad Ali ,  Fei Xu ,  Xi Lu ,  Tao Wu ,  Ruxi Wang

IPC: G01R31/327 ,  G01K7/42 ,  G01R31/26 ,  H03F3/217 ,  H03F1/52

CPC classification number: G01R31/3277 ,  G01K7/42 ,  G01K2217/00 ,  G01R31/2633 ,  G01R31/44 ,  G01R33/3852 ,  H03F1/523 ,  H03F3/2178

Abstract: A switching amplifier includes a power device and a processing device. The power device is configured for powering a load and is comprised of a plurality of switches. The processing device configured to calculate a switch junction temperature for a bonding wire in each switch based at least in part on a power loss of each switch; generate a first accumulated fatigue damage of the bonding wire in each switch based on the switch junction temperature; and generate an estimated remaining lifetime of the switching amplifier based on the first accumulated fatigue damages of the bonding wires in each switch.

公开(公告)号：US10481207B2

公开(公告)日：2019-11-19

申请号：US15471555

申请日：2017-03-28

Applicant: General Electric Company

Inventor： Juan Antonio Sabate ,  Louis Frigo ,  Pengcheng Zhu ,  Melissa Freeman ,  Margaret Wiza ,  Syedsaad Ali ,  Fei Xu ,  Xi Lu ,  Tao Wu ,  Ruxi Wang

IPC: G01R31/327 ,  G01K7/42 ,  G01R31/26 ,  H03F1/52 ,  H03F3/217 ,  G01R31/44 ,  G01R33/385

Abstract: A switching amplifier includes a power device and a processing device. The power device is configured for powering a load and is comprised of a plurality of switches. The processing device configured to calculate a switch junction temperature for a bonding wire in each switch based at least in part on a power loss of each switch; generate a first accumulated fatigue damage of the bonding wire in each switch based on the switch junction temperature; and generate an estimated remaining lifetime of the switching amplifier based on the first accumulated fatigue damages of the bonding wires in each switch.

公开(公告)号：US20190086493A1

公开(公告)日：2019-03-21

申请号：US15708574

申请日：2017-09-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Zhenen Cao ,  Tiezheng Chen ,  Jie Zhou ,  Tao Ma ,  Margaret Wiza ,  Jiabin Yao ,  Juan Sabate

IPC: G01R33/385 ,  H03F3/217 ,  H03K7/08 ,  H03F1/56

Abstract: A gradient amplifier for use in a MRI system can be located in the scan room. The gradient amplifier includes pair of rails connected to a gradient power supply. The gradient amplifier also includes a H-bridge of switches which includes a first high side switch and a first low side switch connected in series between the pair of rails, and a second high side switch and a second low side switch connected in series between the pair of rails. The gradient amplifier further includes a first high side driver circuit, a first low side driver circuit, a second high side driver circuit, and a second low side driver circuit, each configured to drive the corresponding switch in the H-bridge. A common power source supplies power to all driver circuits, wherein power is supplied to the high side driver circuits through bootstrap circuits.