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    Magnetic resonant imaging gradient driver architecture
    12.
    发明授权
    Magnetic resonant imaging gradient driver architecture 有权
    磁共振成像梯度驱动器架构

    公开(公告)号：US08760164B2

    公开(公告)日：2014-06-24

    申请号：US12696972

    申请日：2010-01-29

    申请人： Juan Manuel Rivas Davila ,  Ljubisa Dragoljub Stevanovic ,  Juan Antonio Sabate

    发明人： Juan Manuel Rivas Davila ,  Ljubisa Dragoljub Stevanovic ,  Juan Antonio Sabate

    IPC分类号： G01R33/385

    CPC分类号： G01R33/3852 ,  G01R33/385

    摘要： Embodiments of the present disclosure include a magnetic resonant imaging (MRI) system including a gradient driver configured to deliver a pulse sequence to gradient coils in the MRI system. The gradient driver may be interleaved, and may include two or more interleaved drivers, such that a high amplitude pulse may be output by operating the two interleaved parts of the gradient driver while spreading the electrical loss and maintaining the thermal stability of the system. In one embodiment, each interleaved driver may be rated to output approximately half a maximum amplitude of a current utilized by the gradient coil, and only one interleaved driver may be in operation if only one interleaved driver is sufficient for delivering a necessary pulse to the coils. Further, the interleaved drivers may alternate in operation to maintain thermal stability in the switching semiconductors of the gradient driver.

    摘要翻译： 本公开的实施例包括磁共振成像（MRI）系统，其包括被配置为向MRI系统中的梯度线圈递送脉冲序列的梯度驱动器。 梯度驱动器可以被交织，并且可以包括两个或更多个交错驱动器，使得可以通过在扩展电损耗并维持系统的热稳定性的同时操作梯度驱动器的两个交错部分来输出高幅度脉冲。 在一个实施例中，每个交错的驱动器可以被额定为输出梯度线圈所使用的电流的大约一半的最大振幅，并且只有一个交错驱动器只有一个交错驱动器足以将必要的脉冲传送到线圈 。 此外，交错驱动器可以在操作中交替以保持梯度驱动器的开关半导体中的热稳定性。

    DC TO DC POWER CONVERTERS AND METHODS OF CONTROLLING THE SAME
    14.
    发明申请
    DC TO DC POWER CONVERTERS AND METHODS OF CONTROLLING THE SAME 有权
    直流到直流电源转换器及其控制方法

    公开(公告)号：US20120051095A1

    公开(公告)日：2012-03-01

    申请号：US13171683

    申请日：2011-06-29

    申请人： Robert Louis Steigerwald ,  Ahmed Elasser ,  Juan Antonio Sabate ,  Maja Harfman Todorovic ,  Mohammed Agamy

    发明人： Robert Louis Steigerwald ,  Ahmed Elasser ,  Juan Antonio Sabate ,  Maja Harfman Todorovic ,  Mohammed Agamy

    IPC分类号： H02M3/335

    CPC分类号： H02M3/3372 ,  H02J3/383 ,  H02M3/158 ,  H02M2001/0093 ,  Y02E10/563 ,  Y10T307/944

    摘要： A power generation system configured to provide direct current (DC) power to a DC link is described. The system includes a first power generation unit configured to output DC power. The system also includes a first DC to DC converter comprising an input section and an output section. The output section of the first DC to DC converter is coupled in series with the first power generation unit. The first DC to DC converter is configured to process a first portion of the DC power output by the first power generation unit and to provide an unprocessed second portion of the DC power output of the first power generation unit to the output section.

    摘要翻译： 描述了被配置为向DC链路提供直流（DC）电力的发电系统。 该系统包括被配置为输出直流电力的第一发电单元。 该系统还包括第一DC-DC转换器，其包括输入部分和输出部分。 第一DC-DC转换器的输出部分与第一发电单元串联耦合。 第一DC-DC转换器被配置为处理由第一发电单元输出的直流电力的第一部分，并且向输出部提供第一发电单元的直流电力输出的未处理的第二部分。

    MAGNETIC RESONANT IMAGING GRADIENT DRIVER ARCHITECTURE
    15.
    发明申请
    MAGNETIC RESONANT IMAGING GRADIENT DRIVER ARCHITECTURE 有权
    磁共振成像梯度驱动器架构

    公开(公告)号：US20110187369A1

    公开(公告)日：2011-08-04

    申请号：US12696972

    申请日：2010-01-29

    申请人： Juan Manuel Rivas Davila ,  Ljubisa Dragoljub Stevanovic ,  Juan Antonio Sabate

    发明人： Juan Manuel Rivas Davila ,  Ljubisa Dragoljub Stevanovic ,  Juan Antonio Sabate

    IPC分类号： G01R33/44

    CPC分类号： G01R33/3852 ,  G01R33/385

    摘要： Embodiments of the present disclosure include a magnetic resonant imaging (MRI) system including a gradient driver configured to deliver a pulse sequence to gradient coils in the MRI system. The gradient driver may be interleaved, and may include two or more interleaved drivers, such that a high amplitude pulse may be output by operating the two interleaved parts of the gradient driver while spreading the electrical loss and maintaining the thermal stability of the system. In one embodiment, each interleaved driver may be rated to output approximately half a maximum amplitude of a current utilized by the gradient coil, and only one interleaved driver may be in operation if only one interleaved driver is sufficient for delivering a necessary pulse to the coils. Further, the interleaved drivers may alternate in operation to maintain thermal stability in the switching semiconductors of the gradient driver.

    摘要翻译： 本公开的实施例包括磁共振成像（MRI）系统，其包括被配置为向MRI系统中的梯度线圈递送脉冲序列的梯度驱动器。 梯度驱动器可以被交织，并且可以包括两个或更多个交错驱动器，使得可以通过在扩展电损耗并维持系统的热稳定性的同时操作梯度驱动器的两个交错部分来输出高幅度脉冲。 在一个实施例中，每个交错的驱动器可以被额定为输出梯度线圈所使用的电流的大约一半的最大振幅，并且只有一个交错驱动器只有一个交错的驱动器足以将必要的脉冲传送到线圈 。 此外，交错驱动器可以在操作中交替以保持梯度驱动器的开关半导体中的热稳定性。

    Gate drive circuitry for non-isolated gate semiconductor devices
    16.
    发明授权
    Gate drive circuitry for non-isolated gate semiconductor devices 有权
    非隔离栅极半导体器件的栅极驱动电路

    公开(公告)号：US07915944B2

    公开(公告)日：2011-03-29

    申请号：US12495048

    申请日：2009-06-30

    申请人： Antonio Caiafa ,  Jeffrey Joseph Nasadoski ,  John Stanley Glaser ,  Juan Antonio Sabate ,  Richard Alfred Beaupre

    发明人： Antonio Caiafa ,  Jeffrey Joseph Nasadoski ,  John Stanley Glaser ,  Juan Antonio Sabate ,  Richard Alfred Beaupre

    IPC分类号： H03K17/16 ,  H03K17/30

    CPC分类号： H03K17/687 ,  H03K2017/6875 ,  H03K2217/0036

    摘要： One embodiment is a gate drive circuitry for switching a semiconductor device having a non-isolated input, the gate drive circuitry having a first circuitry configured to turn-on the semiconductor device by imposing a current on a gate of the semiconductor device so as to forward bias an inherent parasitic diode of the semiconductor device. There is a second circuitry configured to turn-off the semiconductor device by imposing a current on the gate of the semiconductor device so as to reverse bias the parasitic diode of the semiconductor device wherein the first circuitry and the second circuitry are coupled to the semiconductor device respectively through a first switch and a second switch.

    摘要翻译： 一个实施例是用于切换具有非隔离输入的半导体器件的栅极驱动电路，栅极驱动电路具有第一电路，其被配置为通过在半导体器件的栅极上施加电流来接通半导体器件，以便向前 偏置半导体器件的固有寄生二极管。 存在第二电路，其被配置为通过在半导体器件的栅极上施加电流来关断半导体器件，以便反向偏置半导体器件的寄生二极管，其中第一电路和第二电路耦合到半导体器件 分别通过第一开关和第二开关。

    Power supply for supplying multi-channel, stable, isolated DC power and method of making same
    17.
    发明授权
    Power supply for supplying multi-channel, stable, isolated DC power and method of making same 有权
    用于提供多通道，稳定，隔离的直流电源的电源及其制造方法

    公开(公告)号：US07714583B2

    公开(公告)日：2010-05-11

    申请号：US12138773

    申请日：2008-06-13

    申请人： Pengcheng Zhu ,  Juan Antonio Sabate ,  Yunfeng Liu

    发明人： Pengcheng Zhu ,  Juan Antonio Sabate ,  Yunfeng Liu

    IPC分类号： G01V3/00

    CPC分类号： H02M7/217 ,  H02M2001/009 ,  H02M2001/0093 ,  Y10T307/422

    摘要： A power supply having an input, wherein the power supply includes a multi-winding transformer having an input and a plurality of outputs, and a plurality of rectifiers to provide a plurality of DC output voltages, wherein each rectifier is coupled to an output of the multi-winding transformer. The power supply further includes a regulator circuit coupled between the transformer input and one of the transformer outputs, and configured to regulate an input voltage to the multi-winding transformer to minimize a variance of each rectifier DC output voltage.

    摘要翻译： 一种具有输入的电源，其中所述电源包括具有输入和多个输出的多绕组变压器，以及多个整流器以提供多个DC输出电压，其中每个整流器耦合到所述输出端的输出端 多绕组变压器。 电源还包括调节器电路，其耦合在变压器输入和变压器输出之一之间，并且被配置为调节到多绕组变压器的输入电压以最小化每个整流器DC输出电压的方差。

    APPARATUS FOR SUPPLYING STABLE, ISOLATED DC POWER AND METHOD OF MAKING SAME
    18.
    发明申请
    APPARATUS FOR SUPPLYING STABLE, ISOLATED DC POWER AND METHOD OF MAKING SAME 有权
    用于供应稳定的隔离直流电力的装置及其制造方法

    公开(公告)号：US20090309598A1

    公开(公告)日：2009-12-17

    申请号：US12138773

    申请日：2008-06-13

    申请人： Pengcheng Zhu ,  Juan Antonio Sabate ,  Yunfeng Liu

    发明人： Pengcheng Zhu ,  Juan Antonio Sabate ,  Yunfeng Liu

    IPC分类号： G01V3/02 ,  H02J1/04

    CPC分类号： H02M7/217 ,  H02M2001/009 ,  H02M2001/0093 ,  Y10T307/422

    摘要： A power supply having an input, wherein the power supply includes a multi-winding transformer having an input and a plurality of outputs, and a plurality of rectifiers to provide a plurality of DC output voltages, wherein each rectifier is coupled to an output of the multi-winding transformer. The power supply further includes a regulator circuit coupled between the transformer input and one of the transformer outputs, and configured to regulate an input voltage to the multi-winding transformer to minimize a variance of each rectifier DC output voltage.

    摘要翻译： 一种具有输入的电源，其中所述电源包括具有输入和多个输出的多绕组变压器，以及多个整流器以提供多个DC输出电压，其中每个整流器耦合到所述输出端的输出端 多绕组变压器。 电源还包括调节器电路，其耦合在变压器输入和变压器输出之一之间，并且被配置为调节到多绕组变压器的输入电压以最小化每个整流器DC输出电压的方差。

    Current driving circuit for inductive loads
    19.
    发明授权
    Current driving circuit for inductive loads 有权
    电感负载的电流驱动电路

    公开(公告)号：US07439682B2

    公开(公告)日：2008-10-21

    申请号：US11843989

    申请日：2007-08-23

    申请人： Antonio Caiafa ,  Juan Antonio Sabate

    发明人： Antonio Caiafa ,  Juan Antonio Sabate

    IPC分类号： H05B41/16

    CPC分类号： H05G1/10 ,  H05G1/52 ,  Y10T307/647

    摘要： A circuit for driving the current for inductive loads such as a electron beam deflection coil for an x-ray generator system. The circuit includes two selectable voltage levels which are provided by a high level voltage source and a low level voltage source or, alternatively, by a low level voltage source and a boosting converter. A plurality of switches for selecting the voltage source allow only one voltage source to be connected to the load at any given time, and for selecting the polarity of the current through the coil. The high level voltage source is selected when the load is charging or discharging. The low level voltage source is selected when the load is operating in a constant current mode, where a high frequency switching device uses the low level voltage source to generate a pulse width modulation waveform according to a reference current duty cycle to control the voltage across the load. A feedback loop monitors the current through the load so that the duty cycle of the pulse width modulation waveform may be adjusted to more accurately control the current through the load.

    摘要翻译： 用于驱动用于感应负载的电流的电路，例如用于X射线发生器系统的电子束偏转线圈。 该电路包括由高电平电压源和低电平电压源提供的两个可选择的电压电平，或者由低电平电压源和升压转换器提供。 用于选择电压源的多个开关仅允许一个电压源在任何给定时间连接到负载，并且用于选择通过线圈的电流的极性。 当负载充电或放电时，选择高电平电压源。 当负载工作在恒流模式时，选择低电平电压源，其中高频开关器件使用低电平电压源根据参考电流占空比产生脉宽调制波形，以控制整流电压 加载。 反馈回路监测负载中的电流，以便脉冲宽度调制波形的占空比可以被调整以更准确地控制通过负载的电流。