公开(公告)号：US20230299734A1

公开(公告)日：2023-09-21

申请号：US17924392

申请日：2021-03-10

Applicant: Hitachi Astemo, Ltd.

Inventor： Jia LI ,  Aya TOOYAMA ,  Hirofumi SHIMIZU

IPC: H03H7/01 ,  H02M1/44 ,  H02M7/48

CPC classification number: H03H7/01 ,  H02M1/44 ,  H02M7/48 ,  B60L15/007

Abstract: Provided is a filter device including a π-type noise filter, and a metal case in which a first ground point and a second ground point are formed. The π-type noise filter includes a magnetic core configured to surround a direct current wiring, a first capacitor disposed in a stage preceding the magnetic core, a second capacitor disposed in a stage subsequent to the magnetic core, each of the first capacitor and the second capacitor connected to a corresponding one of the first ground point and the second ground point. A first partition and a second partition opposing each other are formed between the first ground point and the second ground point, and the first partition and the second partition have a predetermined gap between each other. Provided is a power conversion device including the filter device and a power conversion unit.