Title:
POWER CONVERSION DEVICE, VEHICLE DRIVE SYSTEM, AND NOISE SUPPRESSION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/101173
Kind Code:
A1
Abstract:
This power conversion device comprises: an inverter circuit to the input side of which a positive electrode wire and a negative electrode wire are connected, and which converts an input current flowing through the positive electrode wire and the negative electrode wire into an output current and outputs the output current to a load device; an output power line that is connected between the inverter circuit and the load device, and through which the output current including a noise current flows; a magnetic core through which the output power line penetrates; and a first noise recirculation line and a second noise recirculation line for recirculating the noise current. The first noise recirculation line and the second noise recirculation line are each provided to run parallel to the output power line. One ends of the first noise recirculation line and the second noise recirculation line are each electrically connected to ground on the load device side. The other ends of the first noise recirculation line and the second noise recirculation line are each electrically connected to the negative electrode wire. The first noise recirculation line penetrates through the magnetic core.
Inventors:
CHIDA TADAHIKO (JP)
KOGURE HIROSHI (JP)
SHINOMIYA TAKESHI (JP)
KOGURE HIROSHI (JP)
SHINOMIYA TAKESHI (JP)
Application Number:
PCT/JP2023/038757
Publication Date:
May 16, 2024
Filing Date:
October 26, 2023
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02M7/48; H02M1/12
Domestic Patent References:
| WO2021048892A1 | 2021-03-18 |
Foreign References:
| US20220014178A1 | 2022-01-13 | |||
| JP5362139B1 | 2013-12-11 | |||
| JP2001086734A | 2001-03-30 | |||
| JP2015012650A | 2015-01-19 | |||
| JP2003348818A | 2003-12-05 | |||
| JP2019115223A | 2019-07-11 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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