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公开(公告)号：US10135401B2
公开(公告)日：2018-11-20
申请号：US15510392
申请日：2015-09-10
Applicant: General Electric Company
Inventor： Ying Mei , Pengcheng Zhu , Juan Antonio Sabate , Song Chi , Ruxi Wang , Jianguo Xiao
IPC: H03F3/217 , H03F1/26 , H03F1/30 , G01R33/385
Abstract: A switching amplifier includes a plurality of cascade elements, each bridge circuit includes an inductive load coupled between a first leg terminal of one of the at least two leg circuits and a second leg terminal of another one of the at least two leg circuits. A first leg voltage of the first leg terminal have a phase shift relative to a second leg voltage of the second leg terminal, the phase shift is used for causing the inductive load to store electric energy and generating a minimum circulating current−I min or I min sufficient to effect conducting of a corresponding diode; each of the switches is configured to be turned on if the corresponding diode conducts current to effect zero voltage switching of the corresponding switch. The minimum circulating current−I min or I min is equal to a constant value.
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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.
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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。
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公开(公告)号：US20140160818A1
公开(公告)日：2014-06-12
申请号：US13711483
申请日：2012-12-11
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Luis Jose Garces , Juan Antonio Sabate , Di Zhang
IPC: H02M7/5395
CPC classification number: H02M7/5395 , H02M7/53871
Abstract: Systems and methods for controlling an electrical power supply are provided. One system includes an input configured for receiving voltage measurement signals for the power supply and a controller for one or more electrical phases of the power supply. The controller includes an integrator configured to integrate the received voltage measurement signals and to generate integrated control signals or integrated error signals. The controller is configured to generate an output signal using the integrated control signals or the integrated error signals. The system also includes an output configured to output the output signal to control switching of the power supply.
Abstract translation: 提供了用于控制电源的系统和方法。 一个系统包括被配置用于接收用于电源的电压测量信号的输入端和用于电源的一个或多个电相位的控制器。 控制器包括集成器，其被配置为对所接收的电压测量信号进行积分并产生集成的控制信号或积分误差信号。 控制器被配置为使用集成控制信号或积分误差信号来产生输出信号。 该系统还包括被配置为输出输出信号以控制电源的切换的输出。
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公开(公告)号：US10557901B2
公开(公告)日：2020-02-11
申请号：US15901742
申请日：2018-02-21
Applicant: General Electric Company
Inventor： Viswanathan Kanakasabai , Jayanti Ganesh , Juan Antonio Sabate
IPC: G01R33/385 , H02M3/335 , H03F3/217 , H02M3/337
Abstract: Power systems and circuitry for generation of gradient magnetic fields in magnetic resonance imaging (MRI) systems are discussed herein. Embodiments may include the use of multiple gradient amplifiers that share a high-frequency power distribution unit, that may perform power distribution and power supply roles. The high-frequency power distribution unit may allow the use of a single power supply to drive multiple gradient amplifiers via a shared power bus. The gradient amplifiers may make use of modern semiconductor materials that provide high-frequency, high voltage performance, and may be implemented using single semiconductor bridges.
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Patent Agency Ranking
公开(公告)号：US10539667B2
公开(公告)日：2020-01-21
申请号：US15400807
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Han Peng , Juan Antonio Sabate , Kieran Andrew Wall
Abstract: An ultrasound pulse generator circuit includes a first gate driver electrically coupled to a first gallium nitride (GaN) transistor, a second gate driver electrically coupled to a second GaN transistor, a first snubber circuit, a second snubber circuit, and a transformer. The first snubber circuit and the second snubber circuit each include a respective capacitor and resistor and each snubber circuit is configured to clamp a voltage overshoot when present. Further, the transformer generates an output signal when operated and the third transformer is electrically connected downstream of the first GaN transistor, the second GaN transistor, the first snubber circuit, and the second snubber circuit. In addition, the transformer includes multiple windings.
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公开(公告)号：US20190257902A1
公开(公告)日：2019-08-22
申请号：US15901742
申请日：2018-02-21
Applicant: General Electric Company
Inventor： Viswanathan Kanakasabai , Jayanti Ganesh , Juan Antonio Sabate
IPC: G01R33/385 , H03F3/217 , H02M3/335
Abstract: Power systems and circuitry for generation of gradient magnetic fields in magnetic resonance imaging (MRI) systems are discussed herein. Embodiments may include the use of multiple gradient amplifiers that share a high-frequency power distribution unit, that may perform power distribution and power supply roles. The high-frequency power distribution unit may allow the use of a single power supply to drive multiple gradient amplifiers via a shared power bus. The gradient amplifiers may make use of modern semiconductor materials that provide high-frequency, high voltage performance, and may be implemented using single semiconductor bridges.
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公开(公告)号：US20190235035A1
公开(公告)日：2019-08-01
申请号：US15882835
申请日：2018-01-29
Applicant: General Electric Company
Inventor： Ruxi Wang , Krishna Mainali , Juan Antonio Sabate , Xiaohu Liu , Fengfeng Tao
Abstract: A gate driver circuit is provided. The gate driver circuit includes an isolated gate driver power supply circuit. The isolated gate driver power supply circuit includes a coreless transformer and a resonance converter coupled to the coreless transformer. A method of manufacturing an isolated gate driver power supply circuit for a gate driver circuit is also provided.
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29.发明申请公开(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.
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公开(公告)号：US09551767B2
公开(公告)日：2017-01-24
申请号：US13709812
申请日：2012-12-10
Applicant: General Electric Company
Inventor： Juan Antonio Sabate , Wesley Michael Skeffington , Song Chi , Rixin Lai , Yimeng Shi , Yanjun Zhang
IPC: G01V3/00 , G01R33/36 , G01R33/54 , G01R33/385
CPC classification number: G01R33/3614 , G01R33/3852 , G01R33/543
Abstract: A gradient amplifier system, includes: a power stage comprising a plurality of bridge amplifiers, each operates at a first switching frequency; a gradient coil coupled to the power stage and configured to produce a magnetic field proportional to a coil current signal supplied by the power stage; a controller stage coupled to an input terminal of the power stage and configured to: generate a pulse width modulated gate signal based on the coil current signal and a reference current signal, wherein the pulse width modulated gate signal is generated at a second switching frequency when a slew rate associated with the reference current signal is below a threshold rate for at least a first time period; and apply the pulse width modulated gate signal to the power stage for changing an operating frequency of each of the plurality of bridge amplifiers from the first to the second switching frequency.
Abstract translation: 一种梯度放大器系统，包括：功率级，包括多个桥式放大器，每个以第一开关频率工作; 耦合到功率级并被配置为产生与由功率级提供的线圈电流信号成比例的磁场的梯度线圈; 控制级，其耦合到所述功率级的输入端，并且被配置为：基于所述线圈电流信号和参考电流信号产生脉宽调制门信号，其中所述脉宽调制门信号以第二开关频率产生， 与参考电流信号相关联的转换速率低于至少第一时间段的阈值速率; 并且将所述脉冲宽度调制的栅极信号施加到所述功率级，以将所述多个桥接放大器中的每一个的工作频率从第一开关频率改变为第二开关频率。
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