公开(公告)号：US20230273247A1

公开(公告)日：2023-08-31

申请号：US18013236

申请日：2021-06-28

Applicant: ZTE CORPORATION

Inventor： Qia WANG ,  Jianping ZHOU ,  Guoxian LIN ,  Shanshan FAN ,  Ben E ,  Wei ZHANG ,  Mingming LIU

IPC: G01R19/25 ,  H02M1/14

CPC classification number: G01R19/2509 ,  G01R19/2513 ,  H02M1/14

Abstract: A ripple detection device and a ripple suppression device. The ripple detection device includes: a ripple sampling unit, at least two DC sampling units, and a digital signal processing unit; the ripple sampling unit outputs a first voltage signal at an output port of a non-isolated DC/DC bidirectional energy conversion unit to the digital signal processing unit; the DC sampling unit outputs a first DC signal in a second voltage signal at a connected port of the non-isolated DC/DC bidirectional energy conversion unit to the digital signal processing unit and blocks an AC signal in the second voltage signal to be output to the digital signal processing unit; the digital signal processing unit determines a ripple noise signal at the output port of the non-isolated DC/DC bidirectional energy conversion unit according to the first voltage signal and the first DC signal.