| 摘要 |
PURPOSE:To increase an inductance at the time of unsaturation and miniaturize a device dimensionally, by providing the only central leg of a three-leg core with an AC winding. CONSTITUTION:The AC windings 1A, 1B, 1C of each phase are wound up on the only central legs 3A, 3B, 3C of the three-leg cores 2A, 2B, 2C of each phase. The residual two legs of the three-leg cores of each phase are provided with two DC-controlling windings 4A and 5A, 4B and 5B, 4C and 5C which are mutually wound up in the counter directions and connected in series. The three DC-controlling windings are connected to a DC power source VDC, together with a control circuit 8 consisting of a core 6, a winding 7 wound up on the core, and magnetic flux phiDC for applying self induction, and a reactance 9. |
