Apparatus for regulating voltage in alternating current distribution systems

Abstract

Abstract 291,101. Ganz-Fele Villamossagi Reszvenytarsasag. May 28, 1927. Systems depending on static transformers.- The voltage of alternating current circuits is regulated by a transformer having a single iron body with at least two closed flux paths I, II, Fig. 1, each path having a series winding f and a direct-current exciting or control winding g<1>, g<2>, and a shunt winding S being arranged so that its flux passes through the windings f in opposite directions. The windings f add and subtract additional voltages to an extent determined by the saturation of the paths I, II by the windings g<1>, g<2>. The coils f, S may be connected to opposite sides of a supply transformer. In a modification, the windings g<1>, g<2> are arranged on additional legs parallel to, and on opposite sides of, the leg carrying the winding s. Short-circuited windings are provided on these additional legs to exclude alternating flux from them, and each winding f is in two parts on opposite sides of the corresponding additional leg. In another modification, each of the windings g<1>, g<2> is subdivided into oppositely connected windings on parallel legs. A short-circuited winding of 8- shape surrounding two parallel legs. In a further modification, the windings g are further subdivided as in Fig. 4, the direct current fluxes F in the successive branches being oppositely directed and cross-pieces k<1> having short-circuit windings k. The coils in Fig. 4 may be excited singly or in groups. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement for 3-phase currents with additional #-connected coils and arrangements such as that shown in Fig. 4 (Cancelled) in which the flux paths are in separate iron cores, the coil S being in two parts one on each core and the control windings being energized through a resistance r with adjustable contact or through a tapping switch. This subject-matter does not appear in the Specification as accepted.

Inventors

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