ALTERNATING VOLTAGE CONVERTER (VERSIONS) Russian patent published in 2010 - IPC H02M7/155 

FIELD: electricity.

SUBSTANCE: invention can be used for optimisation of converters, for example for conversion of single-phase alternating voltage to alternating or/and direct, with advanced operating angle of controlled voltage with naturally switched thyristors on primary side of transformer made on two magnetic conductors or standardisation of transformer and valve equipment. Converter of single-phase alternating voltage includes transformer on two twisted strip ring-shaped magnetic conductors with primary and secondary windings arranged by the fact that any cavity envelopes the secondary winding of both magnetic conductors, and one output of each primary winding is connected to the first output of bipole, the second output of which is connected to inlet output, and free output - directly to the other input output; both primary windings together with the above bipoles, one of which can be short-circuited, and the other one - thyristor, are connected to one and the same pair of inlet outputs; at that, reciprocal priority of descriptions of outputs of primary windings from one and the same inlet output to the other corresponds to equal directions of coiling of primary windings relative to common axis of magnetic conductors. In the second version, the converter of three-phase alternating voltage can be made on pin-type or strip twisted magnetic conductors and includes four thyristor bipoles; at that, ratio of frequency of actuation of thyristors of various groups of bipoles per even number of supply voltage periods is two.

EFFECT: increasing power coefficient or uniform distribution of load between primary windings considering the observation of equality of commutation angles and irrespective of the design of transformers, by means of which the possibility of standardisation of transformer and valve equipment is achieved.

6 cl, 7 dwg