Title:
三相電磁機器
Document Type and Number:
Japanese Patent JP6909462
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a three-phase electromagnetic apparatus in which the magnetic circuit structure and the winding structure of a winding are simple, the number of windings is small, assembly is simple, space factor of the winding is large, and variable range of reactance is wide.SOLUTION: A three-phase electromagnetic apparatus has a cage-shaped magnetic core where both ends of six leg iron cores 3aa-3cb, disposed annularly and symmetrically at regular intervals, are coupled by a pair of annular yokes 3d, 3e, AC main windings 1aa-1cb wound around each leg iron core, and a DC control winding wound around the leg iron cores, and connected in series or parallel so as to cancel an electromotive force induced by a three-phase AC current flowing to the AC main winding of each phase. A DC control magnetic flux is generated by supplying a DC control current from the control circuit 4 to the control winding, magnetic resistance of a common magnetic path of main magnetic flux by a three-phase AC current supplied to the AC main winding and the DC control magnetic flux is controlled, thus varying the reactance of the main winding continuously.SELECTED DRAWING: Figure 1
Inventors:
Kei Ohinata
Kenji Arimatsu
Osamu Ichinokura
Kenji Nakamura
Kenji Arimatsu
Osamu Ichinokura
Kenji Nakamura
Application Number:
JP2017026343A
Publication Date:
July 28, 2021
Filing Date:
February 15, 2017
Export Citation:
Assignee:
Tohoku Electric Power Co., Inc.
Tohoku University
Tohoku University
International Classes:
H01F29/14
Domestic Patent References:
| JP2014022626A | ||||
| JP2015032814A | ||||
| JP2008177500A | ||||
| JP54031562A |
Foreign References:
| US20130021126 |
Attorney, Agent or Firm:
Towa International Patent Office