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.
ARIMATSU KENJI
NAKAMURA KENJI
ICHINOKURA OSAMU
UNIV TOHOKU
JP4646327B2 | 2011-03-09 | |||
JP2003068539A | 2003-03-07 | |||
JP2002530852A | 2002-09-17 | |||
JP4646327B2 | 2011-03-09 | |||
JP2003068539A | 2003-03-07 | |||
JP2002530852A | 2002-09-17 |
Akinaka Takano
Eiichi Shiragashi
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