schaltungsanordnung to compensate for brownouts to utilities and to reduce the harmonics of the torrent

摘要

The invention relates to a circuit arrangement for compensating for voltage drops on supply lines (supply leads) and for reducing the harmonics of the current, in which circuit arrangement terminals (0, P1) of an AC source (PS) are connected to the input of an electronic voltage and/or current compensator (ELDC) via a supply network (ZL) which represents an impedance consisting of inductors (inductances) (L0, L1, L2, L3) and resistors (R0, R1, R2, R3), a load impedance (LD) being connected to the output of the compensator (ELDC). The invention essentially comprises a primary winding or windings (PR) of a transformer or transformers (TR) being inserted between the phase output or outputs of the supply network (ZL) and the load impedance (LD), a supply lead or supply leads of the (individual) secondary winding or windings (SR) being connected to a phase output or phase outputs (R, Y, B) of the supply network (ZL) and another supply lead or other supply leads of the secondary winding or windings being connected via a single-phase switching matrix, or single-phase switching matrices (SM1) to the neutral point (0) of the supply network (ZL), or being connected to one another by a three-phase switching matrix (SM3). IMAGE