Title:
COMMON-MODE FILTER
Document Type and Number:
WIPO Patent Application WO/2023/073984
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a common-mode filter that can be more reduced in size than a conventional common-mode filter. A common-mode filter (100) is connected to power lines (4, 5) between an object (3) to be compensated and a power conversion circuit (2) and comprises: a common-mode transformer (11) having a main winding (111) provided in the power lines (4, 5) and an auxiliary winding (112) magnetically coupled to the main winding (111); an amplifier circuit (12) for outputting an amplified voltage (vo) to the auxiliary winding (112); and a current detection unit (13) for detecting the current (io) flowing through the auxiliary winding (112). The common-mode transformer (11) injects a compensation voltage (vcom), which is generated on the basis of the current (io), to the power lines (4, 5).
More Like This:
| JP3399786 | CIRCUIT DEVICE INSIDE VEHICLE WITH MOTOR |
| WO/2021/000364 | ISOLATED POWER SUPPLY CHIP |
| JP3665054 | Lossless switching DC-DC converter |
Inventors:
OISHI MASAYUKI (JP)
FURUSHO YASUAKI (JP)
FURUSHO YASUAKI (JP)
Application Number:
PCT/JP2021/040215
Publication Date:
May 04, 2023
Filing Date:
November 01, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M1/44; H02M1/12; H03H11/04
Foreign References:
| JP2019080469A | 2019-05-23 | |||
| JPH08279724A | 1996-10-22 | |||
| JP2000201044A | 2000-07-18 | |||
| JP2001244770A | 2001-09-07 | |||
| JP2006033113A | 2006-02-02 |
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
Download PDF: