-
公开(公告)号：US10141909B2
公开(公告)日：2018-11-27
申请号：US15723920
申请日：2017-10-03
Applicant: General Electric Company
Inventor： Melissa Jean Freeman , Thomas George McFarland , Margaret Ann Wiza , Douglas Link
Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
-
公开(公告)号：US10310038B2
公开(公告)日：2019-06-04
申请号：US15163193
申请日：2016-05-24
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Margaret Ann Wiza , Melissa Jean Freeman , Syed Saad Asif Ali , Douglas John Link , Michael Thomas Rose , Tanzania Samone Sewell
IPC: G01R33/385
Abstract: A method for supplying electrical power to a gradient amplifier that drives a gradient coil for a magnetic resonance imaging system is provided. The method includes predicting a gradient voltage required to drive the gradient coil for a scan based at least in part on a gradient coil model. The method further includes calculating a voltage set point for a power supply based at least in part on the predicted gradient voltage. The method further includes providing electrical power to the gradient amplifier via the power supply based at least in part on the calculated voltage set point. The gradient coil model is based at least in part on historical data acquired prior to the scan.
-
公开(公告)号：US09287795B2
公开(公告)日：2016-03-15
申请号：US13659284
申请日：2012-10-24
Applicant: General Electric Company
Inventor： Tao Ma , Xi Lu , Yimeng Shi , Pengcheng Zhu , Garron Koch Morris , Juan Antonio Sabate , Jeffrey Neal Slotnick , Wesley Michael Skeffington , Margaret Ann Wiza
CPC classification number: H02M3/3388 , H02M2001/0003 , Y02B70/1433
Abstract: A resonant power supply is provided. The resonant power supply comprises a series resonant converter configured to convert an input DC voltage to an output DC voltage to generate an output DC voltage. The series resonant converter includes a switching stage, a resonant inductor, a resonant capacitor, and an isolation transformer. The resonant power supply further comprises a converter controller configured to obtain an actual trajectory radius signal based on a resonant inductor current, a resonant capacitor voltage, and a voltage in association with the isolation transformer. The converter controller is further configured to generate a trajectory radius command signal based on a DC voltage command signal and a DC voltage feedback signal, and to generate control signals to be applied to the switching stage based on the actual trajectory radius signal and the trajectory radius command signal.
Abstract translation: 提供谐振电源。 谐振电源包括串联谐振转换器，其被配置为将输入DC电压转换为输出DC电压以产生输出DC电压。 串联谐振变换器包括开关级，谐振电感，谐振电容和隔离变压器。 谐振电源还包括转换器控制器，其被配置为基于谐振电感器电流，谐振电容器电压和与隔离变压器相关联的电压获得实际的轨迹半径信号。 转换器控制器还被配置为基于直流电压指令信号和直流电压反馈信号产生轨迹半径指令信号，并且基于实际轨迹半径信号和轨迹半径产生要施加到切换级的控制信号 命令信号。
-
4.发明申请公开(公告)号：US20180284211A1
公开(公告)日：2018-10-04
申请号：US15927218
申请日：2018-03-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Ke Li , Gaohong Wu , Eric Printz , Kenichi Kanda , Margaret Ann Wiza
IPC: G01R33/563 , G01R33/54 , G01R33/483 , A61B5/055
CPC classification number: G01R33/56341 , A61B5/055 , G01R33/4835 , G01R33/543
Abstract: Methods and systems for performing magnetic resonance diffusion weighted imaging of an object is provided. The method includes applying a plurality of diffusion gradients to a plurality of image slices of the object during a plurality of repetition times via an MRI system. A different diffusion gradient of the plurality is applied to each image slice during the same repetition time.
-
公开(公告)号：US10067203B2
公开(公告)日：2018-09-04
申请号：US14879775
申请日：2015-10-09
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Jayanti Ganesh , Juan Antonio Sabate , Rajendra Naik , Margaret Ann Wiza , Viswanathan Kanakasabai , Michael Thomas Rose
IPC: H02J3/00 , G01R33/36 , A61B5/055 , G01R33/385 , G01R33/389 , H02J9/06 , H02M7/04 , G01R33/28
Abstract: The present disclosure relates possible implementations for utilizing energy storage elements in conjunction with a MRI system. Similarly, various associated control mechanisms are discussed. In certain embodiments, one or both of peak power shaving or energy backup may be facilitated by use of the energy storage elements. Certain such implementations may facilitate the use of higher-power MRI systems with an existing electrical infrastructure.
-
Patent Agency Ranking
公开(公告)号：US20180026602A1
公开(公告)日：2018-01-25
申请号：US15723920
申请日：2017-10-03
Applicant: General Electric Company
Inventor： Melissa Jean Freeman , Thomas George McFarland , Margaret Ann Wiza , Douglas Link
IPC: H03H7/09
CPC classification number: H03H7/09 , H03H7/06 , H03H7/075 , H03H2007/013
Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
-
公开(公告)号：US10132852B2
公开(公告)日：2018-11-20
申请号：US14585813
申请日：2014-12-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Margaret Ann Wiza , Louis Martin Frigo , Melissa Jean Freeman , Douglas Link , Michael Thomas Rose , Andrew John Panos
IPC: G01R31/06 , G01R33/385 , G01R31/44
Abstract: An apparatus that includes a power amplifier; a load that is operatively connected to be electrically driven from the power amplifier; and an impedance monitor that is configured to in real-time identify a favorable segment within an output waveform of the power amplifier, model the baseline power spectral density of a load driven by the power amplifier during the identified segment of the output waveform, sample an empirical power spectral density of the load during the identified segment of the output waveform, and indicate a load fault in the event that the empirical power spectral density deviates from the baseline power spectral density beyond at least one pre-determined error criteria.
-
公开(公告)号：US20170102441A1
公开(公告)日：2017-04-13
申请号：US14879775
申请日：2015-10-09
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Jayanti Ganesh , Juan Antonio Sabate , Rajendra Naik , Margaret Ann Wiza , Viswanathan Kanakasabai , Michael Thomas Rose
IPC: G01R33/36 , H02J9/06 , G01R33/389 , H02M7/04 , A61B5/055 , G01R33/385
CPC classification number: G01R33/36 , A61B5/055 , G01R33/28 , G01R33/3614 , G01R33/3852 , G01R33/389 , H02J9/061 , H02M7/04
Abstract: The present disclosure relates possible implementations for utilizing energy storage elements in conjunction with a MRI system. Similarly, various associated control mechanisms are discussed. In certain embodiments, one or both of peak power shaving or energy backup may be facilitated by use of the energy storage elements. Certain such implementations may facilitate the use of higher-power MRI systems with an existing electrical infrastructure.
-
公开(公告)号：US09425700B2
公开(公告)日：2016-08-23
申请号：US13659311
申请日：2012-10-24
Applicant: General Electric Company
Inventor： Xi Lu , Tao Ma , Yimeng Shi , Pengcheng Zhu , Garron Koch Morris , Juan Antonio Sabate , Jeffrey Neal Slotnick , Wesley Michael Skeffington , Margaret Ann Wiza
CPC classification number: H02M3/3376 , H02M1/32 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A resonant power supply is disclosed. The resonant power supply includes a series resonant configured to convert an input DC voltage to an output DC voltage. The resonant power supply further comprises a converter controller coupled to the series resonant converter and configured to receive a DC voltage feedback signal measured at the output of the series resonant converter, or a resonant current feedback signal representing a resonant current flowing through the series resonant converter. The converter controller is further configured to generate control signals to be applied to the series resonant converter to limit the output DC voltage of the series resonant converter according to the DC voltage feedback signal and a predetermined voltage threshold signal, or to limit the resonant current of the series resonant converter according to the resonant current feedback signal and a predetermined current threshold signal.
Abstract translation: 公开了一种谐振电源。 谐振电源包括被配置为将输入DC电压转换为输出DC电压的串联谐振。 谐振电源还包括耦合到串联谐振转换器并被配置为接收在串联谐振转换器的输出处测量的DC电压反馈信号的转换器控制器，或表示流过串联谐振转换器的谐振电流的谐振电流反馈信号 。 转换器控制器还被配置为产生要施加到串联谐振转换器的控制信号，以根据直流电压反馈信号和预定电压阈值信号来限制串联谐振变换器的输出直流电压，或限制串联谐振变换器的谐振电流 所述串联谐振变换器根据所述谐振电流反馈信号和预定电流阈值信号。
-
公开(公告)号：US10247795B2
公开(公告)日：2019-04-02
申请号：US14585554
申请日：2014-12-30
Applicant: General Electric Company
Inventor： Louis Martin Frigo , Melissa Jean Freeman , Margaret Ann Wiza , Douglas Link , Michael Thomas Rose , Scott Richard Weber , Andrew John Panos
IPC: G01R33/385 , G01R33/38
Abstract: A method that includes deriving a first power spectral density function of a signal input to a ripple cancellation filter; deriving a second power spectral density function of a signal concurrently output from the ripple cancellation filter; frequency shaping the first power spectral density according to a spectral rejection image of the ripple cancellation filter to obtain a test power spectral density; and indicating a degraded performance of the ripple cancellation filter in the event that the test and second power spectral density functions fail to match within pre-determined criteria.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.012 seconds)
