Static converter transformer

Details Static converter transformer Static converter transformer

H - Electricity

01

F

321/24

H01F 27/38 (2006.01)

Patent

CA 1234413

ABSTRACT A better filtering effect for disturbing harmonic currents in a high-tension direct current transmission installation is described. A balancing winding is pro- vided between a primary winding as an outer winding and a secondary winding in a 3-winding transformer with a transformer core. The distances between the balancing winding and the primary winding and the secondary winding respectively, are selected such that the equivalent reactance of this balancing winding is equal to or less than zero. A second balancing winding can be provided as the inner winding in a series with the first balancing winding. In the case of a 4-winding transformer, two winding arrangements are provided with two parallel- connected primary windings as the outer windings, with a separate secondary winding for each and a balancing winding for each between the primary and secondary wind- ings, the two balancing windings being connected in series.

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