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    Stacked switched capacitor energy buffer circuit
    41.
    发明授权
    Stacked switched capacitor energy buffer circuit 有权

    公开(公告)号：US10218289B2

    公开(公告)日：2019-02-26

    申请号：US14360992

    申请日：2013-01-17

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： David J. Perreault ,  Khurram K. Afridi ,  Minjie Chen ,  Steven B. Leeb ,  Arthur Hsu Chen Chang

    IPC: H02M3/06 ,  H02M7/537 ,  H01G4/38 ,  H02M7/217 ,  H01G4/30 ,  H02J5/00

    Abstract: A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the SSC energy buffer circuit can be extremely high compared with the efficiency of other energy buffer circuits. Since circuits utilizing the SSC energy buffer architecture need not utilize electrolytic capacitors, circuits utilizing the SSC energy buffer architecture overcome limitations of energy buffers utilizing electrolytic capacitors. Circuits utilizing the SSC energy buffer architecture (without electrolytic capacitors) can achieve an effective energy density characteristic comparable to energy buffers utilizing electrolytic capacitors. The SSC energy buffer architecture exhibits losses that scale with the amount of energy buffered, such that a relatively high efficiency can be achieved across a desired operating range.

    Phase-Switched Impedance Modulation Amplifier
    46.
    发明申请
    Phase-Switched Impedance Modulation Amplifier 有权
    相位阻抗调制放大器

    公开(公告)号：US20160181987A1

    公开(公告)日：2016-06-23

    申请号：US14975742

    申请日：2015-12-19

    Applicant: Massachusetts Institute of Technology

    Inventor： David J. Perreault ,  Alexander Sergeev Jurkov

    IPC: H03F1/02 ,  H03F3/193 ,  H03F3/217 ,  H03F1/56

    CPC classification number: H03F1/0205 ,  H03F1/56 ,  H03F1/565 ,  H03F3/19 ,  H03F3/193 ,  H03F3/21 ,  H03F3/2171 ,  H03F3/2176 ,  H03F3/245 ,  H03F2200/301 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/451 ,  H03H7/38

    Abstract: Described is a phase-switched phase-switched, impedance modulation amplifier (PSIM). The PSIM has an input that can be coupled to a source and an output that can be coupled to a load. The PSIM includes one or more phase-switched reactive elements and a controller. The controller provides a control signal to each of the one or more phase-switched reactive elements. In response to one or more control signals provided thereto, each phase-switched reactive element provides a corresponding selected reactance value such that an impedance presented to an input or output port of an RF amplifier may be varied.

    Abstract translation: 描述了相位切换相位切换阻抗调制放大器（PSIM）。 PSIM具有可以耦合到可耦合到负载的源和输出的输入。 PSIM包括一个或多个相位切换无功元件和控制器。 控制器向一个或多个相位切换无功元件中的每一个提供控制信号。 响应于提供给其的一个或多个控制信号，每个相位切换无功元件提供对应的选择的电抗值，使得呈现给RF放大器的输入或输出端口的阻抗可以变化。

    Resonant Power Converters Using Impedance Control Networks And Related Techniques
    48.
    发明申请
    Resonant Power Converters Using Impedance Control Networks And Related Techniques 审中-公开
    使用阻抗控制网络和相关技术的谐振电源转换器

    公开(公告)号：US20150023063A1

    公开(公告)日：2015-01-22

    申请号：US14382765

    申请日：2013-03-07

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： David J. Perreault ,  Khurram K. Afridi

    IPC: H02M3/335

    CPC classification number: H02M3/33569 ,  H02M3/335 ,  H02M3/33507 ,  H02M3/33576 ,  H02M3/337 ,  H02M3/3376 ,  H02M2001/0003 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

    Abstract: An impedance control resonant power converter (converter) operated at a fixed switching frequency includes an impedance control network (ICN) coupled between two or more inverters operated at a fixed duty ratio with a phase shift between them and one or more rectifiers. The phase shift is used to control output power or compensate for variations in input or output voltage. The converter operates at fixed frequency yet achieves simultaneous zero voltage switching (ZVS) and zero or near zero current switching (ZCS) across a wide operating range. Output power may be controlled by: (1) changing phase shift between inverters; or (2) adjusting phase shift between inverters depending upon input and/or output voltages so that an admittance presented to the inverters is conductive and then turning the converter on and off at a frequency lower than the converter switching frequency to control output power below a value set by the phase shift.

    Abstract translation: 以固定开关频率工作的阻抗控制谐振功率转换器（转换器）包括耦合在两个或多个以固定占空比工作的逆变器之间的阻抗控制网络（ICN），其间具有与一个或多个整流器之间的相移。 相移用于控制输出功率或补偿输入或输出电压的变化。 转换器以固定频率工作，在宽工作范围内实现了零电压切换（ZVS）和零或近零电流切换（ZCS）。 输出功率可以通过以下方式控制：（1）改变逆变器之间的相移; 或（2）根据输入和/或输出电压调整逆变器之间的相移，使得呈现给逆变器的导纳是导通的，然后以低于转换器开关频率的频率接通和关断转换器，以将输出功率控制在低于 值由相移设定。

    Stacked Switched Capacitor Energy Buffer Circuit
    49.
    发明申请
    Stacked Switched Capacitor Energy Buffer Circuit 审中-公开
    堆叠开关电容器能量缓冲电路

    公开(公告)号：US20140355322A1

    公开(公告)日：2014-12-04

    申请号：US14360992

    申请日：2013-01-17

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： David J. Perreault ,  Khurram K. Afridi ,  Minjie Chen ,  Steven B. Leeb ,  Arthur Hsu Chen Chang

    IPC: H02M7/537 ,  H01G4/30

    CPC classification number: H02M7/537 ,  H01G4/30 ,  H01G4/38 ,  H02J5/00 ,  H02M7/217 ,  Y02T10/7022

    Abstract: A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the SSC energy buffer circuit can be extremely high compared with the efficiency of other energy buffer circuits. Since circuits utilizing the SSC energy buffer architecture need not utilize electrolytic capacitors, circuits utilizing the SSC energy buffer architecture overcome limitations of energy buffers utilizing electrolytic capacitors. Circuits utilizing the SSC energy buffer architecture (without electrolytic capacitors) can achieve an effective energy density characteristic comparable to energy buffers utilizing electrolytic capacitors. The SSC energy buffer architecture exhibits losses that scale with the amount of energy buffered, such that a relatively high efficiency can be achieved across a desired operating range.

    Abstract translation: 层叠开关电容器（SSC）能量缓冲电路包括开关网络和多个储能电容器。 开关网络只需要相对低的开关频率工作，并且可以利用储能电容器的软充电来减少损耗。 因此，与其他能量缓冲电路的效率相比，SSC能量缓冲电路的效率可以非常高。 由于使用SSC能量缓冲结构的电路不需要利用电解电容器，所以利用SSC能量缓冲架构的电路克服了利用电解电容器的能量缓冲器的局限性。 利用SSC能量缓冲架构（无电解电容器）的电路可实现与使用电解电容器的能量缓冲器相当的有效能量密度特性。 SSC能量缓冲结构表现出随着能量缓冲量的增加而降低的损耗，使得能够在期望的工作范围内实现相对较高的效率。

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