EP 2526741 B1 20140430 - CIRCUIT ARRANGEMENT AND METHOD FOR RAPID COMMUTATION DURING SQUARE WAVE OPERATION OF HIGH-PRESSURE DISCHARGE LAMPS
Title (en)
CIRCUIT ARRANGEMENT AND METHOD FOR RAPID COMMUTATION DURING SQUARE WAVE OPERATION OF HIGH-PRESSURE DISCHARGE LAMPS
Title (de)
SCHALTUNGSANORDNUNG UND VERFAHREN ZUR SCHNELLEN KOMMUTIERUNG BEIM RECHTECKBETRIEB VON HOCHDRUCKENTLADUNGSLAMPEN
Title (fr)
AGENCEMENT DE CIRCUITS ET PROCÉDÉ POUR LA COMMUTATION RAPIDE DE LAMPES À DÉCHARGE SOUS HAUTE PRESSION EN RÉGIME RECTANGULAIRE
Publication
Application
Priority
EP 2010066966 W 20101108
Abstract (en)
[origin: WO2012062346A1] The invention relates to a circuit arrangement for rapid commutation during square wave operation of high-pressure discharge lamps, comprising: a half bridge arrangement having a half bridge and a lamp inductor, a first switch for coupling the half bridge arrangement to the lamp, a second switch for completing the forward current commutation and for initiating a forward phase, a third switch for completing the reverse current commutation and for initiating a reverse phase, and a block capacitor. The invention likewise relates to a method for operating a high-pressure discharge lamp by means of a circuit arrangement having a half bridge arrangement with a half bridge and a lamp inductor and a block capacitor, characterized by the following steps: before initiating commutation, disconnecting the half bridge arrangement from the high-pressure discharge lamp by opening a first switch; completing the forward commutation by closing a second switch to initiate a forward phase and by opening a third switch, or completing the reverse commutation by closing the third switch to initiate a reverse phase and by opening the second switch; connecting the half bridge arrangement to the high-pressure discharge lamp by closing the first switch; and opening the second switch and the third switch.
IPC 8 full level
H05B 41/292 (2006.01); H05B 41/288 (2006.01)
CPC (source: EP)
H05B 41/2883 (2013.01); H05B 41/2928 (2013.01)
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 RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012062346 A1 20120518; EP 2526741 A1 20121128; EP 2526741 B1 20140430
DOCDB simple family (application)
EP 2010066966 W 20101108; EP 10779504 A 20101108