Stabiliseringsvikling for MVB i TN- og TT-nett

摘要

The present invention relates to a power supply system with voltage stabilisation comprising, for each phase an autotransformer (TA, TB, TC) with a parallel winding (4, 5, 6) and a series winding (7, 8, 9), the autotransformer (TA, TB, TC) further comprising a tertiary winding (22, 23, 24) galvanically separated from the parallel (4, 5, 6) and series (7, 8, 9) winding of the autotransformer; a magnetic controllable inductor (MCISUBA/SUB, MCISUBB/SUB, MCISUBC/SUB) where the parallel winding (4, 5, 6) of the autotransformer (TSUBA/SUB, TSUBB/SUB, TSUBC/SUB) is series connected to a first winding (13, 14, 15) of the magnetic controllable inductor MCISUBA/SUB, MCISUBB/SUB, MCISUBC /SUBbetween the input voltage (Ua, Ub, Uc) and the neutral point, and the tertiary winding (22, 23, 24) of the autotransformer (TSUBA/SUB, TSUBB/SUB, TSUBC/SUB) is connected to a second winding (16, 17, 18) of the magnetic controllable inductor (MCISUBA/SUB, MCISUBB/SUB, MCISUBC/SUB) through their respective first terminals forming pairs of windings, where these pairs of windings are mutually connected.