EP 2622614 A1 20130807 - DEVICE AND METHOD FOR REDUCING A MAGNETIC UNIDIRECTIONAL FLUX FRACTION IN THE CORE OF A TRANSFORMER
Title (en)
DEVICE AND METHOD FOR REDUCING A MAGNETIC UNIDIRECTIONAL FLUX FRACTION IN THE CORE OF A TRANSFORMER
Title (de)
VORRICHTUNG UND VERFAHREN ZUM VERRINGERN EINES MAGNETISCHEN GLEICHFLUSS-ANTEILS IM KERN EINES TRANSFORMATORS
Title (fr)
DISPOSITIF ET PROCÉDÉ POUR RÉDUIRE UNE COMPOSANTE DE FLUX MAGNÉTIQUE CONTINU DANS LE NOYAU D'UN TRANSFORMATEUR
Publication
Application
Priority
EP 2010064397 W 20100929
Abstract (en)
[origin: WO2012041368A1] The invention relates to a device for reducing a magnetic unidirectional flux fraction in the core of a transformer, comprising: - a measurement device (7) that provides a sensor signal (6) corresponding to the magnetic unidirectional flux fraction, - a compensation winding (K) that is magnetically coupled to the core (4) of the transformer, - a switching unit (T) arranged electrically in a current path (3) in series with the compensation winding (K) in order to feed a current into the compensation winding (K), wherein the action of said current is directed opposite to the unidirectional flux fraction. The arrangement is characterized in that the switching unit (T) can be controlled by means of a regulating variable (9) provided by a control device (2), wherein the switching unit (T) can be switched into a conductive state during a predefined time interval (16) and in accordance with the regulating variable (9), the switch-on time (14) being mains-synchronous. A device for limiting the current in the current path (3) is provided and the sensor signal (6) is fed to the control device (2).
IPC 8 full level
H01F 27/38 (2006.01)
CPC (source: EP KR US)
G05F 7/00 (2013.01 - KR US); H01F 27/33 (2013.01 - KR); H01F 27/38 (2013.01 - EP KR US); H01F 27/42 (2013.01 - KR); H01F 27/33 (2013.01 - EP US); H01F 27/42 (2013.01 - EP US); H01F 2029/143 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2012041368A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2012041368 A1 20120405; AU 2010361382 A1 20130411; AU 2010361382 B2 20140724; BR 112013007671 A2 20160809; BR 112013007671 B1 20201103; CA 2813057 A1 20120405; CA 2813057 C 20180102; CN 103270561 A 20130828; CN 103270561 B 20160921; EP 2622614 A1 20130807; EP 2622614 B1 20150318; KR 101720039 B1 20170327; KR 20130099982 A 20130906; US 2013201592 A1 20130808; US 9046901 B2 20150602
DOCDB simple family (application)
EP 2010064397 W 20100929; AU 2010361382 A 20100929; BR 112013007671 A 20100929; CA 2813057 A 20100929; CN 201080069368 A 20100929; EP 10760331 A 20100929; KR 20137010986 A 20100929; US 201013876946 A 20100929