| 摘要 |
PCT No. PCT/CH86/00124 Sec. 371 Date Jul. 7, 1987 Sec. 102(e) Date Jul. 7, 1987 PCT Filed Sep. 2, 1986 PCT Pub. No. WO87/01834 PCT Pub. Date Mar. 26, 1987.The power converter (10) serves for conditioning an electricity supply for a load (12), whereby the supply is derived from a power source (11) and is adapted to the requirements of the load (12) in respect of the electrical values. The converter (10) comprises in its simplest version exclusively a transformer (13) and an inductive resistor connected in series with the latter and designated as an actuator (14). This actuator (14) is constructed from two coaxially-arranged, identical and annularly closed variety cores (111, 112), which are individually surrounded by partial windings of an induction winding (150) and jointly by a control winding (117). The latter (117) is joined to a control system (30), which by means of a control current (I) sets an inductivity value (L) of the actuator (14), which can be varied within wide ranges (1.100). The actuator (14) acts with its appropriate inductivity value (L) on the alternating current (i) passing through its induction winding (150) in the same way as a conventional choke of an equivalent inductivity value (L), in other words, without any distortion. The in-series arrangement of the actuator (14) and transformer (13) thus has, on the alternating current (i), the action of a pure, electrically adjustable voltage divider. |
