公开(公告)号：US20180145609A1

公开(公告)日：2018-05-24

申请号：US15359850

申请日：2016-11-23

Applicant: General Electric Company

Inventor： Yannick Louvrier ,  Christophe Robert ,  Philippe Ernest ,  Nicolas Levilly

IPC: H02M7/539 ,  H05G1/46 ,  H05G1/10 ,  A61B6/03

CPC classification number: H02M7/539 ,  A61B6/03 ,  A61B6/032 ,  A61B6/40 ,  A61B6/56 ,  H01L27/0623 ,  H01L29/1608 ,  H02M3/3353 ,  H02M7/797 ,  H03K17/6871 ,  H05G1/10 ,  H05G1/46 ,  H05G1/60 ,  Y02B70/1483

Abstract: An inverter for a computed tomography (CT) system is provided. The inverter includes a hybrid switch. The hybrid switch includes a silicon carbide metal-oxide-semiconductor field-effect transistor (SiC MOSFET) portion, an insulated-gate bipolar transistor (IGBT) portion, a first gate associated within the SiC MOSFET portion, and a second gate associated with the IGBT portion. The SiC MOSFET portion and the IGBT portion of the hybrid switch are configured to be independently controlled via the first gate and the second gate.

公开(公告)号：US09930765B2

公开(公告)日：2018-03-27

申请号：US15015920

申请日：2016-02-04

Applicant: General Electric Company

Inventor： Yannick Louvrier ,  Philippe Ernest ,  Denis Perrillat-Amede ,  Dominique Poincloux ,  Christophe Robert

IPC: H05G1/32 ,  A61B6/03 ,  A61B6/04 ,  A61B6/00 ,  H01J35/06 ,  H01J35/08 ,  H05G1/10 ,  H05G1/54 ,  H05G1/58

CPC classification number: H05G1/32 ,  A61B6/032 ,  A61B6/0407 ,  A61B6/40 ,  A61B6/5211 ,  H01J35/06 ,  H01J35/08 ,  H05G1/10 ,  H05G1/54 ,  H05G1/58

Abstract: In an X-ray generator an X-ray tube includes an anode and a cathode and is energized with at least a first high voltage potential. A dynamic damper with a frequency dependent impedance is interposed between the X-ray tube and a source of the high voltage potential. The impedance of the dynamic damper increases with an increase in frequency associated with tube-spit. In an X-ray generator with resonant switching to provide a first kV level and a second kV level to the X-ray tube, the impedance of the dynamic damper is low at the operational frequency of the resonant switch to promote energy recovery when the resonant switch operates to provide a first kV level to the X-ray tube.

公开(公告)号：US20190165689A1

公开(公告)日：2019-05-30

申请号：US15827981

申请日：2017-11-30

Applicant: General Electric Company

Inventor： Guillermo Garcia Soto ,  Christophe Robert ,  Philippe Ernest

IPC: H02M7/217 ,  H01F27/28 ,  H01F27/24

Abstract: A power converter with a modular, compact architecture with a reduced component count is disclosed. The power converter includes parallel power conversion sections and utilizes one or more mutual coupling input inductors with multiple windings. The windings are connected in pairs in a differential mode between a power source and the parallel power conversion sections. Each power conversion section receives the same input voltage and generates the same output voltage. As a result of the winding connections and the same input and output voltages, the input of the power converter exhibits current balancing and sharing between each branch of the parallel configuration, allowing a single current sensor to provide a measurement of the current and a single controller to control operation of each of the power conversion sections.

公开(公告)号：US20170231076A1

公开(公告)日：2017-08-10

申请号：US15015920

申请日：2016-02-04

Applicant: General Electric Company

Inventor： Yannick Louvrier ,  Philippe Ernest ,  Denis Perrillat-Amede ,  Dominique Poincloux ,  Christophe Robert

IPC: H05G1/32 ,  A61B6/00 ,  H05G1/10 ,  H01J35/06 ,  H01J35/08 ,  A61B6/03 ,  A61B6/04

CPC classification number: H05G1/32 ,  A61B6/032 ,  A61B6/0407 ,  A61B6/40 ,  A61B6/5211 ,  H01J35/06 ,  H01J35/08 ,  H05G1/10 ,  H05G1/54 ,  H05G1/58

Abstract: In an X-ray generator an X-ray tube includes an anode and a cathode and is energized with at least a first high voltage potential. A dynamic damper with a frequency dependent impedance is interposed between the X-ray tube and a source of the high voltage potential. The impedance of the dynamic damper increases with an increase in frequency associated with tube-spit. In an X-ray generator with resonant switching to provide a first kV level and a second kV level to the X-ray tube, the impedance of the dynamic damper is low at the operational frequency of the resonant switch to promote energy recovery when the resonant switch operates to provide a first kV level to the X-ray tube.

公开(公告)号：US10952308B2

公开(公告)日：2021-03-16

申请号：US15994172

申请日：2018-05-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yannick Louvrier ,  Christophe Robert ,  Dominique Poincloux ,  Denis Perrillat-Amede ,  Philippe Ernest

IPC: H05G1/10 ,  H05G1/46 ,  H02H7/04 ,  H01J35/06 ,  H01J35/10

Abstract: A system for protecting a transformer is provided. The system includes an inductor electrically disposed between the transformer and a load powered by the transformer, and a resistor electrically disposed in parallel with the inductor between the transformer and the load.

公开(公告)号：US10750602B2

公开(公告)日：2020-08-18

申请号：US15994141

申请日：2018-05-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yannick Louvrier ,  Julien Nicolle ,  Christophe Robert ,  Elie Herve ,  Philippe Ernest

IPC: H05G1/10 ,  H05G1/46 ,  H02H7/04 ,  H01J35/06 ,  H01J35/10

Abstract: A system for compensating for a back emission current in an X-ray generator is provided. The system includes a transformer, a common, and a voltage source. The transformer is operative to provide power to an electron emitter of the X-ray generator. The common is electrically coupled to an anode of the X-ray generator. The anode is operative to receive electrons emitted by the electron emitter such that the back emission current is generated between the common and the electron emitter. The voltage source electrically couples the common to the transformer and is operative to generate an offset voltage that reduces the back emission current.