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。

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。