US 12,424,911 B2
Motor-driven compressor with noise reduction unit
Kazuhiro Shiraishi, Kariya (JP); Keiji Yashiro, Kariya (JP); and Shinji Kawahara, Kariya (JP)
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
Filed by KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
Filed on Mar. 14, 2024, as Appl. No. 18/605,329.
Claims priority of application No. 2023-050107 (JP), filed on Mar. 27, 2023.
Prior Publication US 2024/0333109 A1, Oct. 3, 2024
Int. Cl. H02K 11/33 (2016.01); F04C 18/02 (2006.01); F25B 31/02 (2006.01); H01F 27/24 (2006.01); H01F 27/26 (2006.01); H01F 27/30 (2006.01); H01F 27/32 (2006.01); H01F 27/33 (2006.01); H01F 37/00 (2006.01); H02K 7/14 (2006.01); H02K 11/30 (2016.01); H02M 1/12 (2006.01)
CPC H02K 11/33 (2016.01) [F04C 18/0215 (2013.01); F25B 31/026 (2013.01); H01F 27/24 (2013.01); H01F 27/266 (2013.01); H01F 27/30 (2013.01); H01F 27/306 (2013.01); H01F 27/324 (2013.01); H01F 27/33 (2013.01); H01F 37/00 (2013.01); H02K 7/14 (2013.01); H02K 11/30 (2016.01); H02M 1/123 (2021.05); H02M 1/126 (2013.01); F04C 2240/40 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A motor-driven compressor, comprising:
a compression unit configured to compress fluid;
a motor configured to drive the compression unit;
an inverter device configured to drive the motor; and
a housing that accommodates the inverter device, wherein
the inverter device includes
an inverter circuit configured to convert direct-current power into alternating-current power, and
a noise reduction unit arranged at an input side of the inverter circuit and configured to reduce common mode noise and normal mode noise included in the direct-current power input to the inverter circuit,
the noise reduction unit includes
a common mode choke coil including a looped core and two windings wound around the core, and
a looped conductor surrounding the two windings,
the conductor is configured so that an induced current flows in the conductor in a circumferential direction of the conductor to resist changes in a leakage magnetic flux from the core,
the conductor includes a housing-side conductor portion located between the two windings and the housing,
the housing-side conductor portion includes a through-hole that extends through the housing-side conductor portion, and
the housing includes a projection that is inserted into the through-hole and opposed to the two windings.