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Title:
ELECTROMAGNETIC DEVICE
Document Type and Number:
Japanese Patent JP2010123587
Kind Code:
A
Abstract:

To provide an electromagnetic device which can continuously increase and decrease a reactance value without being influenced by a current of an AC main winding and reduces control loss.

The electromagnetic device has a structure in which an AC main winding and a DC control winding are wound to form a two-by-two matrix magnetic core, AC main magnetic fluxes of the main winding oppose at a cross point of a first straight line magnetic path of a cross of the two-by-two matrix to return four closed magnetic paths symmetrically, and DC control magnetic fluxes by the control winding return two closed magnetic paths through a second straight line magnetic path of the cross in one direction. A bias magnetic flux is imparted to a returned magnetic path of the DC control magnetic flux, and a reactance of the main magnetic flux is continuously increased or decreased from a predetermined value depending on a direction of a control current of the control winding.


Inventors:
OHINATA TAKASHI
ARIMATSU KENJI
SAKAMOTO KUNIO
Application Number:
JP2008292921A
Publication Date:
June 03, 2010
Filing Date:
November 17, 2008
Export Citation:
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Assignee:
TOHOKU ELECTRIC POWER CO
International Classes:
H01F29/14
Domestic Patent References:
JP2005045133A2005-02-17
JPS53101926A1978-09-05
Attorney, Agent or Firm:
Hiroyuki Okada
Akinaka Takano
Eiichi Shiragashi