公开(公告)号：US20160181938A1

公开(公告)日：2016-06-23

申请号：US14972190

申请日：2015-12-17

Applicant: ABB Technology AG

Inventor： Jarno Alahuhtala ,  Tomi Riipinen

IPC: H02M5/297 ,  H03H7/01

CPC classification number: H02M5/297 ,  H02M1/12 ,  H02M7/487 ,  H03H7/0161

Abstract: The present disclosure describes a method and arrangement for damping a resonant component of a common-mode current of a multi-phase power converter comprising an output filter with a virtual ground connection to the power converter. In the method and arrangement, the common-mode current is determined, a feedback signal is formed on the basis of the common-mode current, and the feedback signal is injected into a common mode current reference in order to dampen the resonance frequency component. A delay is added to the feedback signal so that the feedback signal has a sufficient phase margin with respect to a subsequent cycle of the resonance frequency component of the common-mode current.

Abstract translation: 本公开描述了一种用于阻尼多相功率转换器的共模电流的谐振分量的方法和装置，其包括具有到功率转换器的虚拟接地连接的输出滤波器。 在该方法和装置中，确定共模电流，基于共模电流形成反馈信号，并且将反馈信号注入到共模电流基准中以便抑制谐振频率分量。 向反馈信号添加延迟，使得反馈信号相对于共模电流的谐振频率分量的后续周期具有足够的相位裕度。

公开(公告)号：US09843266B2

公开(公告)日：2017-12-12

申请号：US14972190

申请日：2015-12-17

Applicant: ABB Technology AG

Inventor： Jarno Alahuhtala ,  Tomi Riipinen

IPC: H02M1/12 ,  H02M5/297 ,  H02M7/487 ,  H03H7/01

CPC classification number: H02M5/297 ,  H02M1/12 ,  H02M7/487 ,  H03H7/0161

Abstract: The present disclosure describes a method and arrangement for damping a resonant component of a common-mode current of a multi-phase power converter comprising an output filter with a virtual ground connection to the power converter. In the method and arrangement, the common-mode current is determined, a feedback signal is formed on the basis of the common-mode current, and the feedback signal is injected into a common mode current reference in order to dampen the resonance frequency component. A delay is added to the feedback signal so that the feedback signal has a sufficient phase margin with respect to a subsequent cycle of the resonance frequency component of the common-mode current.