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：US09692293B2

公开(公告)日：2017-06-27

申请号：US14323396

申请日：2014-07-03

Applicant: General Electric Company

Inventor： Tao Wu ,  Ying Zhang ,  Laigui Qin ,  Yingqi Zhang ,  Fan Zhang ,  Xin Hao

IPC: H02M1/32 ,  H02H7/12 ,  H03K17/10

CPC classification number: H02M1/32 ,  H02H7/1203 ,  H02M2001/325 ,  H03K17/107

Abstract: A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a driving signal. The driving module includes a normal driving unit and a fault protection unit. The normal driving unit is for turning on and off the switching module according to a first command signal from the control module. The fault protection unit is for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal.