Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
THREE-PHASE ELECTROMAGNETIC DEVICE
Document Type and Number:
Japanese Patent JP2013042028
Kind Code:
A
Abstract:

To provide an easy-to-assemble three-phase electromagnetic device with excellent three-phase balance and low distortion capable of varying a reactance.

Eighteen linear magnetic cores are radially arranged almost symmetrically, and the center end and the peripheral end of each linear magnetic core are coupled by a coupling magnetic core to constitute an eighteen-leg magnetic core. Alternating-current main coils are wound around linear magnetic cores every two legs, and direct-current control coils are wound around the other linear magnetic cores. Two of the alternating-current main coils are symmetrically paired into an alternating-current main coil of each phase of three-phase alternating current. Each direct-current control coil is connected so that an electromotive force induced to each of the direct-current control coils is negated by a main magnetic flux of the three-phase alternating-current main coil. A direct-current control current is supplied to the direct-current control coil to generate a direct-current control magnetic flux. A magnetic resistance of a common magnetic path of the main magnetic flux and the control magnetic flux is controlled, so that a reactance of the alternating-current main coil is made variable continuously.


Inventors:
OHINATA TAKASHI
ARIMATSU KENJI
NAKAMURA KENJI
ICHINOKURA OSAMU
Application Number:
JP2011178878A
Publication Date:
February 28, 2013
Filing Date:
August 18, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOHOKU ELECTRIC POWER CO
UNIV TOHOKU
International Classes:
H01F29/14; H01F30/12
Domestic Patent References:
JP4646327B22011-03-09
JP2003068539A2003-03-07
JP2002530852A2002-09-17
JP4646327B22011-03-09
JP2003068539A2003-03-07
JP2002530852A2002-09-17
Attorney, Agent or Firm:
Hiroyuki Okada
Akinaka Takano
Eiichi Shiragashi