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    RESONANT CONVERTER FOR ACHIEVING LOW COMMON-MODE NOISE, ALONG WITH ISOLATED POWER SUPPLY AND METHOD EMPLOYING THE SAME
    3.
    发明申请
    RESONANT CONVERTER FOR ACHIEVING LOW COMMON-MODE NOISE, ALONG WITH ISOLATED POWER SUPPLY AND METHOD EMPLOYING THE SAME 有权
    用于实现低共模噪声的共振转换器，具有隔离电源及使用其的方法

    公开(公告)号：US20100328974A1

    公开(公告)日：2010-12-30

    申请号：US12495770

    申请日：2009-06-30

    申请人： John F. Kenny ,  Joe E. Marriott ,  Katherine Mueller ,  Michael J. Benes ,  Daniel Miller

    发明人： John F. Kenny ,  Joe E. Marriott ,  Katherine Mueller ,  Michael J. Benes ,  Daniel Miller

    IPC分类号： H02M7/06

    CPC分类号： H02M3/3376 ,  H02M2001/0058 ,  H02M2001/123 ,  H02M2007/4815 ,  H02M2007/53878 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

    摘要： Embodiments are described for reducing common-mode current in electronic devices. In the various embodiments, a resonant converter is employed, for example in a power supply, and the resonant converter is driven by a DC input to generate an AC primary voltage on the primary windings of a power transformer. The DC input may be derived from an AC line voltage or a DC-to-DC converter. The AC primary voltage drives the primary winding of the transformer to generate an AC secondary voltage on at least one secondary winding of the transformer. The AC secondary voltage may then drive a rectifier, which in turn drives a low-pass filter to produce a DC output voltage. Phase-shift modulation is employed which, in conjunction with the resonant converter, applies a sinusoidal waveform to the primary of the transformer resulting in a reduced amount of common-mode current injected onto the secondary.

    摘要翻译： 描述了用于降低电子设备中的共模电流的实施例。 在各种实施例中，例如在电源中使用谐振转换器，并且谐振转换器由DC输入驱动以在电力变压器的初级绕组上产生AC初级电压。 DC输入可以从AC线电压或DC-DC转换器导出。 交流一次电压驱动变压器的初级绕组，以在变压器的至少一个次级绕组上产生交流二次电压。 然后，交流二次电压可以驱动整流器，整流器又驱动低通滤波器以产生直流输出电压。 采用相移调制，其结合谐振转换器，将正弦波形施加到变压器的初级，导致注入次级的共模电流减少。

    AC mains test system for measuring current harmonics and voltage variations
    5.
    发明授权
    AC mains test system for measuring current harmonics and voltage variations 失效
    用于测量电流谐波和电压变化的交流电源测试系统

    公开(公告)号：US5671147A

    公开(公告)日：1997-09-23

    申请号：US514197

    申请日：1995-08-11

    申请人： James B. McKim, Jr. ,  John F. Kenny, Jr.

    发明人： James B. McKim, Jr. ,  John F. Kenny, Jr.

    IPC分类号： G01R19/25 ,  G01R23/20 ,  G06F17/40

    CPC分类号： G01R19/25 ,  G01R23/20

    摘要： A digital system measures cyclic disturbance signals on an electrical line that are induced by a connected unit under test (UUT). The system includes a digital to analog (D/A) converter which receives and converts a first train of digital signals to a cyclic analog test signal and applies that signal to the electrical line. An analog to digital (A/D) converter receives and converts analog cyclic disturbance signals from the electrical line to a second train of digital signals. A synch generator applies a train of synch pulses, concurrently, to synchronizing inputs of the D/A converter and the A/D converter so that their respective conversion operations are based upon a common time-base signal. A processor is coupled to the D/A converter and A/D converter and outputs the first train of digital signals to the D/A converter and receives the second train of digital signals from the A/D converter. The processor subjects a portion of the second train of digital signals to signal analysis, with the portion of the second train being representative of an integer number of cycles of the cyclic disturbance signal sensed from the electrical line. The clock frequency which causes generation of the synch pulses is selected so that the synch pulses have a precise, predetermined relationship to a predetermined number of cycles of the cyclic signal (in the case of a power spectrum analysis) or a predetermined number of half cycles (in the case of an amplitude analysis).

    摘要翻译： 数字系统测量由被测单元（UUT）引起的电线上的循环干扰信号。 该系统包括数模（D / A）转换器，其将第一列数字信号接收并转换为循环模拟测试信号，并将该信号施加到电线。 模数（A / D）转换器接收并将模拟循环干扰信号从电线转换成第二列数字信号。 同步发生器同时施加一串同步脉冲，以同步D / A转换器和A / D转换器的输入，使得它们各自的转换操作基于公共时基信号。 处理器耦合到D / A转换器和A / D转换器，并将第一串数字信号输出到D / A转换器，并从A / D转换器接收第二列数字信号。 处理器对第二列数字信号的一部分进行信号分析，其中第二列的部分表示从电线感测的循环干扰信号的整数个周期。 选择产生同步脉冲的时钟频率，使得同步脉冲与循环信号（在功率谱分析的情况下）或预定数量的半周期的预定数量的周期具有精确的预定关系 （在振幅分析的情况下）。

    Resonant converter for achieving low common-mode noise, along with isolated power supply and method employing the same
    8.
    发明授权
    Resonant converter for achieving low common-mode noise, along with isolated power supply and method employing the same 有权
    用于实现低共模噪声的谐振转换器，以及隔离电源及采用它的方法

    公开(公告)号：US09240729B2

    公开(公告)日：2016-01-19

    申请号：US12495770

    申请日：2009-06-30

    申请人： John F. Kenny ,  Joe E. Marriott ,  Katherine Mueller ,  Michael J. Benes ,  Daniel Miller

    发明人： John F. Kenny ,  Joe E. Marriott ,  Katherine Mueller ,  Michael J. Benes ,  Daniel Miller

    IPC分类号： H02M7/5383 ,  H02M3/337 ,  H02M7/48 ,  H02M1/12 ,  H02M7/5387 ,  H02M1/00

    CPC分类号： H02M3/3376 ,  H02M2001/0058 ,  H02M2001/123 ,  H02M2007/4815 ,  H02M2007/53878 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

    摘要： Embodiments are described for reducing common-mode current in electronic devices. In the various embodiments, a resonant converter is employed, for example in a power supply, and the resonant converter is driven by a DC input to generate an AC primary voltage on the primary windings of a power transformer. The DC input may be derived from an AC line voltage or a DC-to-DC converter. The AC primary voltage drives the primary winding of the transformer to generate an AC secondary voltage on at least one secondary winding of the transformer. The AC secondary voltage may then drive a rectifier, which in turn drives a low-pass filter to produce a DC output voltage. Phase-shift modulation is employed which, in conjunction with the resonant converter, applies a sinusoidal waveform to the primary of the transformer resulting in a reduced amount of common-mode current injected onto the secondary.

    摘要翻译： 描述了用于降低电子设备中的共模电流的实施例。 在各种实施例中，例如在电源中采用谐振转换器，并且谐振转换器由DC输入驱动以在电力变压器的初级绕组上产生AC初级电压。 DC输入可以从AC线电压或DC-DC转换器导出。 交流一次电压驱动变压器的初级绕组，以在变压器的至少一个次级绕组上产生交流二次电压。 然后，交流二次电压可以驱动整流器，整流器又驱动低通滤波器以产生直流输出电压。 采用相移调制，其结合谐振转换器，将正弦波形施加到变压器的初级，导致注入次级的共模电流减少。