EP 1759397 B1 20071017 - 40° PHASE-SHIFTING AUTOTRANSFORMER
Title (en)
40° PHASE-SHIFTING AUTOTRANSFORMER
Title (de)
AUTOTRANSFORMATOR MIT 40-GRAD-PHASENVERSCHIEBUNG
Title (fr)
AUTOTRANSFORMATEUR A DEPHASAGE DE 40°
Publication
Application
Priority
- EP 2005051304 W 20050321
- FR 0404955 A 20040507
Abstract (en)
[origin: WO2005109457A1] The invention relates to a transformer for converting three-phase power into nine-phase power, in particular for a rectifier. The inventive autotransformer is embodied in the form of a step-up or step-down transformer. For a step-down transformer, three-phase input terminals (E1,E2, E3) are delta-connected to one of main windings, mounted on the respective magnetic legs (M12, M23, M31) of a magnetic circuit. The leg main winding (B12) is provided with intermediate connections (K1,K'1, K''1) from which auxiliary windings (X31, Y23, Z31) mounted on the other legs extend away. Said auxiliary windings produce on output terminals (A1, B1, C1) voltages one of which is in phase with the supply three-phase voltage on the (E1), the other is +40 DEG phase-shifted and the third is + 80 DEG phase-shifted. The number of turns of the auxiliary windings and the position of the intermediate connections are calculated in such a way that said result is obtainable. The identical windings of the other legs produce other output voltages on terminals (A2,B2, C2, A3, B3) in such a way that a nine-phase system is embodied.
IPC 8 full level
H01F 30/02 (2006.01); H01F 30/14 (2006.01); H02M 7/06 (2006.01)
CPC (source: EP US)
H01F 30/02 (2013.01 - EP US); H01F 30/14 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
WO 2005109457 A1 20051117; DE 602005002955 D1 20071129; DE 602005002955 T2 20080724; EP 1759397 A1 20070307; EP 1759397 B1 20071017; ES 2294690 T3 20080401; FR 2870039 A1 20051111; FR 2870039 B1 20060804; US 2008130320 A1 20080605; US 7474188 B2 20090106
DOCDB simple family (application)
EP 2005051304 W 20050321; DE 602005002955 T 20050321; EP 05717117 A 20050321; ES 05717117 T 20050321; FR 0404955 A 20040507; US 57906407 A 20070906