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1. WO1999007192 - CIRCUIT ARRANGEMENT

Publication Number WO/1999/007192
Publication Date 11.02.1999
International Application No. PCT/IB1998/000909
International Filing Date 11.06.1998
IPC
H05B 41/285 2006.1
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
285Arrangements for protecting lamps or circuits against abnormal operating conditions
H05B 41/392 2006.1
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
CPC
H05B 41/2856
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
285Arrangements for protecting lamps or circuits against abnormal operating conditions
2851for protecting the circuit against abnormal operating conditions
2856against internal abnormal circuit conditions
H05B 41/3925
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
3921with possibility of light intensity variations
3925by frequency variation
H05B 45/355
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
355Power factor correction [PFC]; Reactive power compensation
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL]
  • PHILIPS AB [SE]/[SE] (SE)
Inventors
  • ARTS, Paulus, Petrus, Bernardus
  • AENDEKERK, Everaard, Marie, Jozef
  • HENDRIX, Machiel, Antonius, Martinus
  • GRADZKI, Pawel
  • JANCZAK, Jerzy
Agents
  • EVERS, Johannes, H., M.
Priority Data
08/903,56731.07.1997US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CIRCUIT ARRANGEMENT
(FR) MONTAGE DE CIRCUIT
Abstract
(EN) A circuit arrangement according to the invention for the high-frequency operation of a discharge lamp (Li) comprises first rectifying means (D1-D4) for generating a DC voltage across first capacitive means (C1) from a low-frequency supply voltage. The circuit arrangement further comprises a DC/AC converter (IV) for generating a high-frequency AC voltage with a frequency f from the DC voltage. A load branch (B) provided with coupling means (T3, T4) for coupling the discharge lamp (Li) to the load branch connects a junction point (N1) of the DC/AC converter to a junction point (N2) between the first rectifying means and the first capacitive means. The circuit arrangement further comprises second rectifying means for converting a high-frequency voltage generated by the DC/AC converter into a DC voltage. The second rectifying means are coupled to the first capacitive means and to a junction point (N3) in the load branch. The circuit arrangement is in addition provided with means (CR) for controlling the power consumed by the discharge lamp (Li) through variation of the frequency f. The coupling means are connected between the junction point (N2) and the junction point (N3) in the load branch.
(FR) Le montage de circuit selon l'invention, qui est destiné au fonctionnement d'une lampe à décharge (Li) haute fréquence, comporte une première série d'organes redresseurs (D1-D4) servant à produire une tension en courant continu aux bornes d'un premier organe capacitif (C1) à partir d'une tension d'alimentation basse fréquence. Ce montage de circuit comporte, en outre, un convertisseur courant continu-courant alternatif (IV) destiné à produire une tension alternative haute fréquence possédant une fréquence f à partir de la tension en courant continu. Une dérivation de charge (B) pourvue d'organes de couplage (T3, T4) destinés à coupler la lampe à décharge (Li) à la dérivation de charge met en connexion un point de raccordement N1 du convertisseur courant continu-courant alternatif et un point de raccordement N2 entre les premiers organes redresseurs et le premier organe capacitif. Ce montage de circuit comporte, de surcroît, une seconde série d'organes redresseurs servant à convertir une tension haute fréquence produite par le convertisseur courant continu-courant alternatif en tension en courant continu. Cette seconde série d'organes redresseurs est couplée au premier organe capacitif ainsi qu'à un point de raccordement N3 sur la dérivation de charge. Le montage de circuit comporte également un organe (CR) permettant d'agir sur l'énergie consommée par la lampe à décharge (Li) en faisant varier la fréquence f. Les organes de couplage sont connectés entre les points de raccordement N2 et N3 sur la dérivation de charge.
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