Hitachi Astemo Ltd.

Hirofumi Shimizu

Jia Li

Aya Tooyama

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.

Pi-type noise filter disposed within a case and including first and second partitions with a gap therebetween that are interposed between stages of the filter

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Hitachinaka, Japan

Hirofumi Shimizu