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Patent Searching and Data


Title:
FILTER DEVICE AND POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/229908
Kind Code:
A1
Abstract:
This filter device comprises a Pi-type noise filter, and a metal case in which a first grounding point and a second grounding point are formed. The Pi-type noise filter has a magnetic body core that surrounds DC wiring, a first capacitor in a stage before the magnetic body core, and a second capacitor in a stage after the same. The first capacitor and the second capacitor are respectively connected to the first grounding point and the second grounding point, a first partition wall and a second partition wall that face one another are formed therebetween, and there is a prescribed gap between the partition walls. This power conversion device comprises the aforementioned filter device, and a power conversion unit.

Inventors:
LI, Jia (JP)
TOOYAMA, Aya (JP)
SHIMIZU, Hirofumi (JP)
Application Number:
PCT/JP2021/009695
Publication Date:
November 18, 2021
Filing Date:
March 10, 2021
Export Citation:
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Assignee:
HITACHI ASTEMO, LTD. (JP)
International Classes:
H03H7/01; H03H7/09; H01G4/40; H01F27/00; H01F27/06; H02M7/48
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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