US 11,728,091 B2
Three-phase reactor comprising iron-core units and coils
Masatomo Shirouzu, Yamanashi (JP); and Takuya Maeda, Yamanashi (JP)
Assigned to FANUC CORPORATION, Yamanashi (JP)
Filed by FANUC CORPORATION, Yamanashi (JP)
Filed on May 1, 2020, as Appl. No. 16/864,952.
Application 16/864,952 is a division of application No. 15/400,066, filed on Jan. 6, 2017, granted, now 10,748,703.
Claims priority of application No. 2016-014484 (JP), filed on Jan. 28, 2016; and application No. 2016-160747 (JP), filed on Aug. 18, 2016.
Prior Publication US 2020/0258681 A1, Aug. 13, 2020
Int. Cl. H01F 27/28 (2006.01); H01F 37/00 (2006.01); H01F 3/14 (2006.01); H02K 11/33 (2016.01); H01F 27/32 (2006.01)
CPC H01F 37/005 (2013.01) [H01F 3/14 (2013.01); H01F 27/324 (2013.01); H01F 37/00 (2013.01); H02K 11/33 (2016.01)] 2 Claims
OG exemplary drawing
 
1. A three-phase reactor comprising:
an outer peripheral iron core including at least three outer peripheral iron-core units wherein the outer peripheral iron core has an outer face and an inside face, and the inside face facing a center of the outer peripheral iron core; and
at least three iron-core coils that are arranged inside of the outer peripheral iron core,
wherein each of the at least three iron-core coils come in contact with or are integral with a respective outer peripheral iron-core units;
gaps that can magnetically connect each of the at least three iron-core coils with an adjacent one of the at least three iron-core coils to each other are formed between the one iron-core coil of the at least three iron-core coils and the iron-core coil adjacent to the one iron-core coil;
wherein one part of the inside face of the outer peripheral iron-core unit is partially parallel to a side face of an iron core of the at least three iron-core coils;
wherein each coil of the at least three iron-core coils is arranged in a space formed between the one part of the inside face of the outer peripheral iron-core unit and the side face of the iron core, and
wherein a width of the gap between the one iron core and the adjacent iron core is shorter than a width of the space.