To provide electromagnetic equipment capable of decreasing an occurrence of a harmonic distortion in a broad current range from a small to a large current flowing a main winding, and capable of varying a reactance.
A core has two by two matrix magnetic paths symmetrically formed by four closed magnetic paths. A main magnetic flux passes a first linear magnetic path of a crisscross magnetic path of the two by two matrix magnetic paths. An alternating winding is wound so as to symmetrically flow backward the four closed magnetic paths facing at the crisscross intersecting point. A direct-current control winding is wound so that control magnetic fluxes symmetrically flow backward two magnetic paths passing through the second linear magnetic path of the crisscross magnetic path in one direction. A magnetic resistance of a common magnetic path of the main magnetic flux and the control magnetic flux is adjusted by the control of the control magnetic flux. Interposing a non-magnetic part at a part of four each closed magnetic path with the main magnetic flux of the core forming the two by two matrix magnetic paths flowed backward improves a magnetization characteristic of the magnetic path with the main magnetic flux flowed backward to decrease an occurrence of the higher harmonic wave.
| WO/1998/047159 | A CONTROLLABLE INDUCTOR |
| JP6734328 | Reactor |
| JPH0232509 | LEAKAGE CONTROL TYPE TRANSFORMER OF LAMP STABILIZER HAVING UNIFIED STABILIZING INDUCTOR |
AKATSUKA SHIGEAKI
ARIMATSU KENJI
| JP2003068539A | 2003-03-07 | |||
| JPH02231703A | 1990-09-13 | |||
| JPH0384906A | 1991-04-10 | |||
| JP2005045133A | 2005-02-17 |
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