Title:
CHOKE COIL AND NOISE FILTER USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/144795
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a choke coil that prevents magnetic saturation of a magnetic core even when a large three-phase power supply current flows therethrough and that has a high noise reduction effect on normal mode noise and common mode noise. This choke coil is provided with: a first magnetic core (150) provided with a first leg section (110), a second leg section (120), a third leg section (130), and connecting sections (140) connecting each of the ends of the three leg sections on both ends thereof; a second magnetic core (160) connecting the connecting sections of the first magnetic core to each other; U-phase windings (200); V-phase windings (210); and W-phase windings (220). A first U-phase winding, a first V-phase winding, and a first W-phase winding are wound around the first leg section (110) in this order from one end toward the other end thereof. A second W-phase winding, a second U-phase winding, and a second V-phase winding are wound around the second leg section (120) in this order from one end toward the other end thereof. A third V-phase winding, a third W-phase winding, and a third U-phase winding are wound around the third leg section (130) in this order from one end toward the other end thereof.
Inventors:
SHIRAKI YASUHIRO (JP)
Application Number:
PCT/JP2019/000462
Publication Date:
July 16, 2020
Filing Date:
January 10, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01F37/00
Domestic Patent References:
| WO2017039090A1 | 2017-03-09 | |||
| WO2012157053A1 | 2012-11-22 |
Foreign References:
| JP2017084943A | 2017-05-18 | |||
| JP2015164146A | 2015-09-10 | |||
| JP2018535540A | 2018-11-29 | |||
| JPH11273975A | 1999-10-08 |
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
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